From: Ian Coleman Date: Wed, 18 Dec 2019 21:39:50 +0000 (+1100) Subject: Replace most libraries with combined libs X-Git-Url: https://git.immae.eu/?p=perso%2FImmae%2FProjets%2FCryptomonnaies%2FBIP39.git;a=commitdiff_plain;h=22f8766947313324c4acda2de4f170475d3c5ded Replace most libraries with combined libs --- diff --git a/libs/combined/index.js b/libs/combined/index.js index cd97612..46f4681 100644 --- a/libs/combined/index.js +++ b/libs/combined/index.js @@ -2,6 +2,18 @@ let basex = require('base-x') +/* bchaddrjs */ + +let bchaddr = require('bchaddrjs') + +/* bchaddrjs slp */ + +let bchaddrSlp = require('bchaddrjs-slp') + +/* biginteger */ + +let BigInteger = require('javascript-biginteger') + /* bitcoinjs-bip38 */ let bip38 = require('bip38') @@ -10,10 +22,40 @@ let bip38 = require('bip38') let bitcoin = require('bitcoinjs-lib') +/* buffer */ + +let buffer = require('buffer'); + +/* elastos */ +// See https://github.com/iancoleman/bip39/pull/368 +// and https://github.com/johnnynanjiang/Elastos.SDK.Keypair.Javascript/tree/iancoleman-bip39 + +let elastosjs = require('elastos-wallet-js') + /* ethereum-util */ let ethUtil = require('ethereumjs-util') +/* fast-levenshtein */ + +let levenshtein = require('fast-levenshtein') + +/* groestlcoin */ + +let groestlcoinjs = require('groestlcoinjs-lib') + +/* groestlcoin bip38 */ + +let groestlcoinjsBip38 = require('bip38grs') + +/* kjua qr codes */ + +let kjua = require('kjua') + +/* nebulas */ + +let nebulas = require('nebulas') + /* stellar-util */ let StellarBase = require('stellar-base'); @@ -32,12 +74,32 @@ let stellarUtil = { }, } +/* unorm */ + +let unorm = require('unorm') + +/* zxcvbn */ + +let zxcvbn = require('zxcvbn') + /* exports */ module.exports = { basex, + bchaddr, + bchaddrSlp, + buffer, + BigInteger, bip38, bitcoin, + elastosjs, ethUtil, - stellarUtil + groestlcoinjs, + groestlcoinjsBip38, + kjua, + levenshtein, + nebulas, + stellarUtil, + unorm, + zxcvbn } diff --git a/libs/combined/npm-shrinkwrap.json b/libs/combined/npm-shrinkwrap.json new file mode 100644 index 0000000..fa60284 --- /dev/null +++ b/libs/combined/npm-shrinkwrap.json @@ -0,0 +1,17 @@ +{ + "dependencies": { + "elastos-wallet-js": { + "version": "git://github.com/johnnynanjiang/Elastos.SDK.Keypair.Javascript.git#491dc51b64efaf0a8aae62028b68e2c8e38fde06", + "dependencies": { + "bitcore-lib-p256": { + "version": "0.16.0", + "dependencies": { + "lodash": { + "version": "4.17.12" + } + } + } + } + } + } +} diff --git a/libs/combined/package-lock.json b/libs/combined/package-lock.json new file mode 100644 index 0000000..19c189c --- /dev/null +++ b/libs/combined/package-lock.json @@ -0,0 +1,2241 @@ +{ + "name": "bip39-tool-external-libs", + "version": "0.4.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "@protobufjs/aspromise": { + "version": "1.1.2", + "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz", + "integrity": 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"dev": true + }, + "zxcvbn": { + "version": "4.4.2", + "resolved": "https://registry.npmjs.org/zxcvbn/-/zxcvbn-4.4.2.tgz", + "integrity": "sha1-KOwXzwl0PtyrBW3dixsGJizHPDA=" + } + } +} diff --git a/libs/combined/package.json b/libs/combined/package.json index 93ffe40..69bda17 100644 --- a/libs/combined/package.json +++ b/libs/combined/package.json @@ -2,15 +2,27 @@ "name": "bip39-tool-external-libs", "version": "0.4.0", "scripts": { - "build": "browserify index.js --standalone libs > /tmp/bip39-libs.js" + "build": "browserify index.js --standalone libs > ../../src/js/bip39-libs.js" }, "dependencies": { - "bip38": "2.0.2", - "bitcoinjs-lib": "3.3.2", "base-x": "3.0.7", + "bchaddrjs": "0.4.4", + "bchaddrjs-slp": "git://github.com/simpleledger/bchaddrjs.git#af16e44a6bfbe4b3980a62dba50e2f68ed864c6b", + "bip38": "2.0.2", + "bip38grs": "git://github.com/Groestlcoin/bip38grs.git#091975b01679b74dc0a4136bb743fe17791b0151", + "bitcoinjs-lib": "git://github.com/iancoleman/bitcoinjs-lib.git#v3.3.2_16bit", + "buffer": "5.4.3", "ed25519-hd-key": "^1.0.0", + "elastos-wallet-js": "git://github.com/johnnynanjiang/Elastos.SDK.Keypair.Javascript.git#491dc51b64efaf0a8aae62028b68e2c8e38fde06", "ethereumjs-util": "6.0.0", - "stellar-base": "^0.10.0" + "fast-levenshtein": "2.0.6", + "groestlcoinjs-lib": "git://github.com/Groestlcoin/groestlcoinjs-lib.git#3.3.2", + "javascript-biginteger": "0.9.2", + "kjua": "0.6.0", + "nebulas": "0.5.6", + "stellar-base": "^0.10.0", + "unorm": "1.6.0", + "zxcvbn": "4.4.2" }, "devDependencies": { "browserify": "^16.2.3", diff --git a/libs/combined/readme.md b/libs/combined/readme.md new file mode 100644 index 0000000..d0e127e --- /dev/null +++ b/libs/combined/readme.md @@ -0,0 +1,6 @@ +# Generate libs + +``` +npm install +npm run build +``` diff --git a/src/index.html b/src/index.html index 7e2c3f3..2de2b3d 100644 --- a/src/index.html +++ b/src/index.html @@ -957,25 +957,13 @@ - - - - - - + - - - - - - - @@ -988,10 +976,7 @@ - - - diff --git a/src/js/basex.js b/src/js/basex.js deleted file mode 100644 index 1ec705d..0000000 --- a/src/js/basex.js +++ /dev/null @@ -1,2010 +0,0 @@ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.foo = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o 0) { - throw new Error('Invalid string. Length must be a multiple of 4') - } - - // the number of equal signs (place holders) - // if there are two placeholders, than the two characters before it - // represent one byte - // if there is only one, then the three characters before it represent 2 bytes - // this is just a cheap hack to not do indexOf twice - return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0 -} - -function byteLength (b64) { - // base64 is 4/3 + up to two characters of the original data - return b64.length * 3 / 4 - placeHoldersCount(b64) -} - -function toByteArray (b64) { - var i, j, l, tmp, placeHolders, arr - var len = b64.length - placeHolders = placeHoldersCount(b64) - - arr = new Arr(len * 3 / 4 - placeHolders) - - // if there are placeholders, only get up to the last complete 4 chars - l = placeHolders > 0 ? len - 4 : len - - var L = 0 - - for (i = 0, j = 0; i < l; i += 4, j += 3) { - tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)] - arr[L++] = (tmp >> 16) & 0xFF - arr[L++] = (tmp >> 8) & 0xFF - arr[L++] = tmp & 0xFF - } - - if (placeHolders === 2) { - tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4) - arr[L++] = tmp & 0xFF - } else if (placeHolders === 1) { - tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2) - arr[L++] = (tmp >> 8) & 0xFF - arr[L++] = tmp & 0xFF - } - - return arr -} - -function tripletToBase64 (num) { - return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F] -} - -function encodeChunk (uint8, start, end) { - var tmp - var output = [] - for (var i = start; i < end; i += 3) { - tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]) - output.push(tripletToBase64(tmp)) - } - return output.join('') -} - -function fromByteArray (uint8) { - var tmp - var len = uint8.length - var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes - var output = '' - var parts = [] - var maxChunkLength = 16383 // must be multiple of 3 - - // go through the array every three bytes, we'll deal with trailing stuff later - for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { - parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength))) - } - - // pad the end with zeros, but make sure to not forget the extra bytes - if (extraBytes === 1) { - tmp = uint8[len - 1] - output += lookup[tmp >> 2] - output += lookup[(tmp << 4) & 0x3F] - output += '==' - } else if (extraBytes === 2) { - tmp = (uint8[len - 2] << 8) + (uint8[len - 1]) - output += lookup[tmp >> 10] - output += lookup[(tmp >> 4) & 0x3F] - output += lookup[(tmp << 2) & 0x3F] - output += '=' - } - - parts.push(output) - - return parts.join('') -} - -},{}],2:[function(require,module,exports){ -/*! - * The buffer module from node.js, for the browser. - * - * @author Feross Aboukhadijeh - * @license MIT - */ -/* eslint-disable no-proto */ - -'use strict' - -var base64 = require('base64-js') -var ieee754 = require('ieee754') - -exports.Buffer = Buffer -exports.SlowBuffer = SlowBuffer -exports.INSPECT_MAX_BYTES = 50 - -var K_MAX_LENGTH = 0x7fffffff -exports.kMaxLength = K_MAX_LENGTH - -/** - * If `Buffer.TYPED_ARRAY_SUPPORT`: - * === true Use Uint8Array implementation (fastest) - * === false Print warning and recommend using `buffer` v4.x which has an Object - * implementation (most compatible, even IE6) - * - * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, - * Opera 11.6+, iOS 4.2+. - * - * We report that the browser does not support typed arrays if the are not subclassable - * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` - * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support - * for __proto__ and has a buggy typed array implementation. - */ -Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() - -if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && - typeof console.error === 'function') { - console.error( - 'This browser lacks typed array (Uint8Array) support which is required by ' + - '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' - ) -} - -function typedArraySupport () { - // Can typed array instances can be augmented? - try { - var arr = new Uint8Array(1) - arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }} - return arr.foo() === 42 - } catch (e) { - return false - } -} - -function createBuffer (length) { - if (length > K_MAX_LENGTH) { - throw new RangeError('Invalid typed array length') - } - // Return an augmented `Uint8Array` instance - var buf = new Uint8Array(length) - buf.__proto__ = Buffer.prototype - return buf -} - -/** - * The Buffer constructor returns instances of `Uint8Array` that have their - * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of - * `Uint8Array`, so the returned instances will have all the node `Buffer` methods - * and the `Uint8Array` methods. Square bracket notation works as expected -- it - * returns a single octet. - * - * The `Uint8Array` prototype remains unmodified. - */ - -function Buffer (arg, encodingOrOffset, length) { - // Common case. - if (typeof arg === 'number') { - if (typeof encodingOrOffset === 'string') { - throw new Error( - 'If encoding is specified then the first argument must be a string' - ) - } - return allocUnsafe(arg) - } - return from(arg, encodingOrOffset, length) -} - -// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 -if (typeof Symbol !== 'undefined' && Symbol.species && - Buffer[Symbol.species] === Buffer) { - Object.defineProperty(Buffer, Symbol.species, { - value: null, - configurable: true, - enumerable: false, - writable: false - }) -} - -Buffer.poolSize = 8192 // not used by this implementation - -function from (value, encodingOrOffset, length) { - if (typeof value === 'number') { - throw new TypeError('"value" argument must not be a number') - } - - if (value instanceof ArrayBuffer) { - return fromArrayBuffer(value, encodingOrOffset, length) - } - - if (typeof value === 'string') { - return fromString(value, encodingOrOffset) - } - - return fromObject(value) -} - -/** - * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError - * if value is a number. - * Buffer.from(str[, encoding]) - * Buffer.from(array) - * Buffer.from(buffer) - * Buffer.from(arrayBuffer[, byteOffset[, length]]) - **/ -Buffer.from = function (value, encodingOrOffset, length) { - return from(value, encodingOrOffset, length) -} - -// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: -// https://github.com/feross/buffer/pull/148 -Buffer.prototype.__proto__ = Uint8Array.prototype -Buffer.__proto__ = Uint8Array - -function assertSize (size) { - if (typeof size !== 'number') { - throw new TypeError('"size" argument must be a number') - } else if (size < 0) { - throw new RangeError('"size" argument must not be negative') - } -} - -function alloc (size, fill, encoding) { - assertSize(size) - if (size <= 0) { - return createBuffer(size) - } - if (fill !== undefined) { - // Only pay attention to encoding if it's a string. This - // prevents accidentally sending in a number that would - // be interpretted as a start offset. - return typeof encoding === 'string' - ? createBuffer(size).fill(fill, encoding) - : createBuffer(size).fill(fill) - } - return createBuffer(size) -} - -/** - * Creates a new filled Buffer instance. - * alloc(size[, fill[, encoding]]) - **/ -Buffer.alloc = function (size, fill, encoding) { - return alloc(size, fill, encoding) -} - -function allocUnsafe (size) { - assertSize(size) - return createBuffer(size < 0 ? 0 : checked(size) | 0) -} - -/** - * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. - * */ -Buffer.allocUnsafe = function (size) { - return allocUnsafe(size) -} -/** - * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. - */ -Buffer.allocUnsafeSlow = function (size) { - return allocUnsafe(size) -} - -function fromString (string, encoding) { - if (typeof encoding !== 'string' || encoding === '') { - encoding = 'utf8' - } - - if (!Buffer.isEncoding(encoding)) { - throw new TypeError('"encoding" must be a valid string encoding') - } - - var length = byteLength(string, encoding) | 0 - var buf = createBuffer(length) - - var actual = buf.write(string, encoding) - - if (actual !== length) { - // Writing a hex string, for example, that contains invalid characters will - // cause everything after the first invalid character to be ignored. (e.g. - // 'abxxcd' will be treated as 'ab') - buf = buf.slice(0, actual) - } - - return buf -} - -function fromArrayLike (array) { - var length = array.length < 0 ? 0 : checked(array.length) | 0 - var buf = createBuffer(length) - for (var i = 0; i < length; i += 1) { - buf[i] = array[i] & 255 - } - return buf -} - -function fromArrayBuffer (array, byteOffset, length) { - if (byteOffset < 0 || array.byteLength < byteOffset) { - throw new RangeError('\'offset\' is out of bounds') - } - - if (array.byteLength < byteOffset + (length || 0)) { - throw new RangeError('\'length\' is out of bounds') - } - - var buf - if (byteOffset === undefined && length === undefined) { - buf = new Uint8Array(array) - } else if (length === undefined) { - buf = new Uint8Array(array, byteOffset) - } else { - buf = new Uint8Array(array, byteOffset, length) - } - - // Return an augmented `Uint8Array` instance - buf.__proto__ = Buffer.prototype - return buf -} - -function fromObject (obj) { - if (Buffer.isBuffer(obj)) { - var len = checked(obj.length) | 0 - var buf = createBuffer(len) - - if (buf.length === 0) { - return buf - } - - obj.copy(buf, 0, 0, len) - return buf - } - - if (obj) { - if (isArrayBufferView(obj) || 'length' in obj) { - if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { - return createBuffer(0) - } - return fromArrayLike(obj) - } - - if (obj.type === 'Buffer' && Array.isArray(obj.data)) { - return fromArrayLike(obj.data) - } - } - - throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.') -} - -function checked (length) { - // Note: cannot use `length < K_MAX_LENGTH` here because that fails when - // length is NaN (which is otherwise coerced to zero.) - if (length >= K_MAX_LENGTH) { - throw new RangeError('Attempt to allocate Buffer larger than maximum ' + - 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') - } - return length | 0 -} - -function SlowBuffer (length) { - if (+length != length) { // eslint-disable-line eqeqeq - length = 0 - } - return Buffer.alloc(+length) -} - -Buffer.isBuffer = function isBuffer (b) { - return b != null && b._isBuffer === true -} - -Buffer.compare = function compare (a, b) { - if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { - throw new TypeError('Arguments must be Buffers') - } - - if (a === b) return 0 - - var x = a.length - var y = b.length - - for (var i = 0, len = Math.min(x, y); i < len; ++i) { - if (a[i] !== b[i]) { - x = a[i] - y = b[i] - break - } - } - - if (x < y) return -1 - if (y < x) return 1 - return 0 -} - -Buffer.isEncoding = function isEncoding (encoding) { - switch (String(encoding).toLowerCase()) { - case 'hex': - case 'utf8': - case 'utf-8': - case 'ascii': - case 'latin1': - case 'binary': - case 'base64': - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return true - default: - return false - } -} - -Buffer.concat = function concat (list, length) { - if (!Array.isArray(list)) { - throw new TypeError('"list" argument must be an Array of Buffers') - } - - if (list.length === 0) { - return Buffer.alloc(0) - } - - var i - if (length === undefined) { - length = 0 - for (i = 0; i < list.length; ++i) { - length += list[i].length - } - } - - var buffer = Buffer.allocUnsafe(length) - var pos = 0 - for (i = 0; i < list.length; ++i) { - var buf = list[i] - if (!Buffer.isBuffer(buf)) { - throw new TypeError('"list" argument must be an Array of Buffers') - } - buf.copy(buffer, pos) - pos += buf.length - } - return buffer -} - -function byteLength (string, encoding) { - if (Buffer.isBuffer(string)) { - return string.length - } - if (isArrayBufferView(string) || string instanceof ArrayBuffer) { - return string.byteLength - } - if (typeof string !== 'string') { - string = '' + string - } - - var len = string.length - if (len === 0) return 0 - - // Use a for loop to avoid recursion - var loweredCase = false - for (;;) { - switch (encoding) { - case 'ascii': - case 'latin1': - case 'binary': - return len - case 'utf8': - case 'utf-8': - case undefined: - return utf8ToBytes(string).length - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return len * 2 - case 'hex': - return len >>> 1 - case 'base64': - return base64ToBytes(string).length - default: - if (loweredCase) return utf8ToBytes(string).length // assume utf8 - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } - } -} -Buffer.byteLength = byteLength - -function slowToString (encoding, start, end) { - var loweredCase = false - - // No need to verify that "this.length <= MAX_UINT32" since it's a read-only - // property of a typed array. - - // This behaves neither like String nor Uint8Array in that we set start/end - // to their upper/lower bounds if the value passed is out of range. - // undefined is handled specially as per ECMA-262 6th Edition, - // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. - if (start === undefined || start < 0) { - start = 0 - } - // Return early if start > this.length. Done here to prevent potential uint32 - // coercion fail below. - if (start > this.length) { - return '' - } - - if (end === undefined || end > this.length) { - end = this.length - } - - if (end <= 0) { - return '' - } - - // Force coersion to uint32. This will also coerce falsey/NaN values to 0. - end >>>= 0 - start >>>= 0 - - if (end <= start) { - return '' - } - - if (!encoding) encoding = 'utf8' - - while (true) { - switch (encoding) { - case 'hex': - return hexSlice(this, start, end) - - case 'utf8': - case 'utf-8': - return utf8Slice(this, start, end) - - case 'ascii': - return asciiSlice(this, start, end) - - case 'latin1': - case 'binary': - return latin1Slice(this, start, end) - - case 'base64': - return base64Slice(this, start, end) - - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return utf16leSlice(this, start, end) - - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = (encoding + '').toLowerCase() - loweredCase = true - } - } -} - -// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) -// to detect a Buffer instance. It's not possible to use `instanceof Buffer` -// reliably in a browserify context because there could be multiple different -// copies of the 'buffer' package in use. This method works even for Buffer -// instances that were created from another copy of the `buffer` package. -// See: https://github.com/feross/buffer/issues/154 -Buffer.prototype._isBuffer = true - -function swap (b, n, m) { - var i = b[n] - b[n] = b[m] - b[m] = i -} - -Buffer.prototype.swap16 = function swap16 () { - var len = this.length - if (len % 2 !== 0) { - throw new RangeError('Buffer size must be a multiple of 16-bits') - } - for (var i = 0; i < len; i += 2) { - swap(this, i, i + 1) - } - return this -} - -Buffer.prototype.swap32 = function swap32 () { - var len = this.length - if (len % 4 !== 0) { - throw new RangeError('Buffer size must be a multiple of 32-bits') - } - for (var i = 0; i < len; i += 4) { - swap(this, i, i + 3) - swap(this, i + 1, i + 2) - } - return this -} - -Buffer.prototype.swap64 = function swap64 () { - var len = this.length - if (len % 8 !== 0) { - throw new RangeError('Buffer size must be a multiple of 64-bits') - } - for (var i = 0; i < len; i += 8) { - swap(this, i, i + 7) - swap(this, i + 1, i + 6) - swap(this, i + 2, i + 5) - swap(this, i + 3, i + 4) - } - return this -} - -Buffer.prototype.toString = function toString () { - var length = this.length - if (length === 0) return '' - if (arguments.length === 0) return utf8Slice(this, 0, length) - return slowToString.apply(this, arguments) -} - -Buffer.prototype.equals = function equals (b) { - if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') - if (this === b) return true - return Buffer.compare(this, b) === 0 -} - -Buffer.prototype.inspect = function inspect () { - var str = '' - var max = exports.INSPECT_MAX_BYTES - if (this.length > 0) { - str = this.toString('hex', 0, max).match(/.{2}/g).join(' ') - if (this.length > max) str += ' ... ' - } - return '' -} - -Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { - if (!Buffer.isBuffer(target)) { - throw new TypeError('Argument must be a Buffer') - } - - if (start === undefined) { - start = 0 - } - if (end === undefined) { - end = target ? target.length : 0 - } - if (thisStart === undefined) { - thisStart = 0 - } - if (thisEnd === undefined) { - thisEnd = this.length - } - - if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { - throw new RangeError('out of range index') - } - - if (thisStart >= thisEnd && start >= end) { - return 0 - } - if (thisStart >= thisEnd) { - return -1 - } - if (start >= end) { - return 1 - } - - start >>>= 0 - end >>>= 0 - thisStart >>>= 0 - thisEnd >>>= 0 - - if (this === target) return 0 - - var x = thisEnd - thisStart - var y = end - start - var len = Math.min(x, y) - - var thisCopy = this.slice(thisStart, thisEnd) - var targetCopy = target.slice(start, end) - - for (var i = 0; i < len; ++i) { - if (thisCopy[i] !== targetCopy[i]) { - x = thisCopy[i] - y = targetCopy[i] - break - } - } - - if (x < y) return -1 - if (y < x) return 1 - return 0 -} - -// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, -// OR the last index of `val` in `buffer` at offset <= `byteOffset`. -// -// Arguments: -// - buffer - a Buffer to search -// - val - a string, Buffer, or number -// - byteOffset - an index into `buffer`; will be clamped to an int32 -// - encoding - an optional encoding, relevant is val is a string -// - dir - true for indexOf, false for lastIndexOf -function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { - // Empty buffer means no match - if (buffer.length === 0) return -1 - - // Normalize byteOffset - if (typeof byteOffset === 'string') { - encoding = byteOffset - byteOffset = 0 - } else if (byteOffset > 0x7fffffff) { - byteOffset = 0x7fffffff - } else if (byteOffset < -0x80000000) { - byteOffset = -0x80000000 - } - byteOffset = +byteOffset // Coerce to Number. - if (numberIsNaN(byteOffset)) { - // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer - byteOffset = dir ? 0 : (buffer.length - 1) - } - - // Normalize byteOffset: negative offsets start from the end of the buffer - if (byteOffset < 0) byteOffset = buffer.length + byteOffset - if (byteOffset >= buffer.length) { - if (dir) return -1 - else byteOffset = buffer.length - 1 - } else if (byteOffset < 0) { - if (dir) byteOffset = 0 - else return -1 - } - - // Normalize val - if (typeof val === 'string') { - val = Buffer.from(val, encoding) - } - - // Finally, search either indexOf (if dir is true) or lastIndexOf - if (Buffer.isBuffer(val)) { - // Special case: looking for empty string/buffer always fails - if (val.length === 0) { - return -1 - } - return arrayIndexOf(buffer, val, byteOffset, encoding, dir) - } else if (typeof val === 'number') { - val = val & 0xFF // Search for a byte value [0-255] - if (typeof Uint8Array.prototype.indexOf === 'function') { - if (dir) { - return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) - } else { - return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) - } - } - return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir) - } - - throw new TypeError('val must be string, number or Buffer') -} - -function arrayIndexOf (arr, val, byteOffset, encoding, dir) { - var indexSize = 1 - var arrLength = arr.length - var valLength = val.length - - if (encoding !== undefined) { - encoding = String(encoding).toLowerCase() - if (encoding === 'ucs2' || encoding === 'ucs-2' || - encoding === 'utf16le' || encoding === 'utf-16le') { - if (arr.length < 2 || val.length < 2) { - return -1 - } - indexSize = 2 - arrLength /= 2 - valLength /= 2 - byteOffset /= 2 - } - } - - function read (buf, i) { - if (indexSize === 1) { - return buf[i] - } else { - return buf.readUInt16BE(i * indexSize) - } - } - - var i - if (dir) { - var foundIndex = -1 - for (i = byteOffset; i < arrLength; i++) { - if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { - if (foundIndex === -1) foundIndex = i - if (i - foundIndex + 1 === valLength) return foundIndex * indexSize - } else { - if (foundIndex !== -1) i -= i - foundIndex - foundIndex = -1 - } - } - } else { - if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength - for (i = byteOffset; i >= 0; i--) { - var found = true - for (var j = 0; j < valLength; j++) { - if (read(arr, i + j) !== read(val, j)) { - found = false - break - } - } - if (found) return i - } - } - - return -1 -} - -Buffer.prototype.includes = function includes (val, byteOffset, encoding) { - return this.indexOf(val, byteOffset, encoding) !== -1 -} - -Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, true) -} - -Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, false) -} - -function hexWrite (buf, string, offset, length) { - offset = Number(offset) || 0 - var remaining = buf.length - offset - if (!length) { - length = remaining - } else { - length = Number(length) - if (length > remaining) { - length = remaining - } - } - - // must be an even number of digits - var strLen = string.length - if (strLen % 2 !== 0) throw new TypeError('Invalid hex string') - - if (length > strLen / 2) { - length = strLen / 2 - } - for (var i = 0; i < length; ++i) { - var parsed = parseInt(string.substr(i * 2, 2), 16) - if (numberIsNaN(parsed)) return i - buf[offset + i] = parsed - } - return i -} - -function utf8Write (buf, string, offset, length) { - return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) -} - -function asciiWrite (buf, string, offset, length) { - return blitBuffer(asciiToBytes(string), buf, offset, length) -} - -function latin1Write (buf, string, offset, length) { - return asciiWrite(buf, string, offset, length) -} - -function base64Write (buf, string, offset, length) { - return blitBuffer(base64ToBytes(string), buf, offset, length) -} - -function ucs2Write (buf, string, offset, length) { - return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) -} - -Buffer.prototype.write = function write (string, offset, length, encoding) { - // Buffer#write(string) - if (offset === undefined) { - encoding = 'utf8' - length = this.length - offset = 0 - // Buffer#write(string, encoding) - } else if (length === undefined && typeof offset === 'string') { - encoding = offset - length = this.length - offset = 0 - // Buffer#write(string, offset[, length][, encoding]) - } else if (isFinite(offset)) { - offset = offset >>> 0 - if (isFinite(length)) { - length = length >>> 0 - if (encoding === undefined) encoding = 'utf8' - } else { - encoding = length - length = undefined - } - } else { - throw new Error( - 'Buffer.write(string, encoding, offset[, length]) is no longer supported' - ) - } - - var remaining = this.length - offset - if (length === undefined || length > remaining) length = remaining - - if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { - throw new RangeError('Attempt to write outside buffer bounds') - } - - if (!encoding) encoding = 'utf8' - - var loweredCase = false - for (;;) { - switch (encoding) { - case 'hex': - return hexWrite(this, string, offset, length) - - case 'utf8': - case 'utf-8': - return utf8Write(this, string, offset, length) - - case 'ascii': - return asciiWrite(this, string, offset, length) - - case 'latin1': - case 'binary': - return latin1Write(this, string, offset, length) - - case 'base64': - // Warning: maxLength not taken into account in base64Write - return base64Write(this, string, offset, length) - - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return ucs2Write(this, string, offset, length) - - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } - } -} - -Buffer.prototype.toJSON = function toJSON () { - return { - type: 'Buffer', - data: Array.prototype.slice.call(this._arr || this, 0) - } -} - -function base64Slice (buf, start, end) { - if (start === 0 && end === buf.length) { - return base64.fromByteArray(buf) - } else { - return base64.fromByteArray(buf.slice(start, end)) - } -} - -function utf8Slice (buf, start, end) { - end = Math.min(buf.length, end) - var res = [] - - var i = start - while (i < end) { - var firstByte = buf[i] - var codePoint = null - var bytesPerSequence = (firstByte > 0xEF) ? 4 - : (firstByte > 0xDF) ? 3 - : (firstByte > 0xBF) ? 2 - : 1 - - if (i + bytesPerSequence <= end) { - var secondByte, thirdByte, fourthByte, tempCodePoint - - switch (bytesPerSequence) { - case 1: - if (firstByte < 0x80) { - codePoint = firstByte - } - break - case 2: - secondByte = buf[i + 1] - if ((secondByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) - if (tempCodePoint > 0x7F) { - codePoint = tempCodePoint - } - } - break - case 3: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) - if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { - codePoint = tempCodePoint - } - } - break - case 4: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - fourthByte = buf[i + 3] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) - if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { - codePoint = tempCodePoint - } - } - } - } - - if (codePoint === null) { - // we did not generate a valid codePoint so insert a - // replacement char (U+FFFD) and advance only 1 byte - codePoint = 0xFFFD - bytesPerSequence = 1 - } else if (codePoint > 0xFFFF) { - // encode to utf16 (surrogate pair dance) - codePoint -= 0x10000 - res.push(codePoint >>> 10 & 0x3FF | 0xD800) - codePoint = 0xDC00 | codePoint & 0x3FF - } - - res.push(codePoint) - i += bytesPerSequence - } - - return decodeCodePointsArray(res) -} - -// Based on http://stackoverflow.com/a/22747272/680742, the browser with -// the lowest limit is Chrome, with 0x10000 args. -// We go 1 magnitude less, for safety -var MAX_ARGUMENTS_LENGTH = 0x1000 - -function decodeCodePointsArray (codePoints) { - var len = codePoints.length - if (len <= MAX_ARGUMENTS_LENGTH) { - return String.fromCharCode.apply(String, codePoints) // avoid extra slice() - } - - // Decode in chunks to avoid "call stack size exceeded". - var res = '' - var i = 0 - while (i < len) { - res += String.fromCharCode.apply( - String, - codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) - ) - } - return res -} - -function asciiSlice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) - - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i] & 0x7F) - } - return ret -} - -function latin1Slice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) - - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i]) - } - return ret -} - -function hexSlice (buf, start, end) { - var len = buf.length - - if (!start || start < 0) start = 0 - if (!end || end < 0 || end > len) end = len - - var out = '' - for (var i = start; i < end; ++i) { - out += toHex(buf[i]) - } - return out -} - -function utf16leSlice (buf, start, end) { - var bytes = buf.slice(start, end) - var res = '' - for (var i = 0; i < bytes.length; i += 2) { - res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) - } - return res -} - -Buffer.prototype.slice = function slice (start, end) { - var len = this.length - start = ~~start - end = end === undefined ? len : ~~end - - if (start < 0) { - start += len - if (start < 0) start = 0 - } else if (start > len) { - start = len - } - - if (end < 0) { - end += len - if (end < 0) end = 0 - } else if (end > len) { - end = len - } - - if (end < start) end = start - - var newBuf = this.subarray(start, end) - // Return an augmented `Uint8Array` instance - newBuf.__proto__ = Buffer.prototype - return newBuf -} - -/* - * Need to make sure that buffer isn't trying to write out of bounds. - */ -function checkOffset (offset, ext, length) { - if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') - if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') -} - -Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) - - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul - } - - return val -} - -Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - checkOffset(offset, byteLength, this.length) - } - - var val = this[offset + --byteLength] - var mul = 1 - while (byteLength > 0 && (mul *= 0x100)) { - val += this[offset + --byteLength] * mul - } - - return val -} - -Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - return this[offset] -} - -Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return this[offset] | (this[offset + 1] << 8) -} - -Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return (this[offset] << 8) | this[offset + 1] -} - -Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return ((this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16)) + - (this[offset + 3] * 0x1000000) -} - -Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return (this[offset] * 0x1000000) + - ((this[offset + 1] << 16) | - (this[offset + 2] << 8) | - this[offset + 3]) -} - -Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) - - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul - } - mul *= 0x80 - - if (val >= mul) val -= Math.pow(2, 8 * byteLength) - - return val -} - -Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) - - var i = byteLength - var mul = 1 - var val = this[offset + --i] - while (i > 0 && (mul *= 0x100)) { - val += this[offset + --i] * mul - } - mul *= 0x80 - - if (val >= mul) val -= Math.pow(2, 8 * byteLength) - - return val -} - -Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - if (!(this[offset] & 0x80)) return (this[offset]) - return ((0xff - this[offset] + 1) * -1) -} - -Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset] | (this[offset + 1] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val -} - -Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset + 1] | (this[offset] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val -} - -Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return (this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16) | - (this[offset + 3] << 24) -} - -Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return (this[offset] << 24) | - (this[offset + 1] << 16) | - (this[offset + 2] << 8) | - (this[offset + 3]) -} - -Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, true, 23, 4) -} - -Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, false, 23, 4) -} - -Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, true, 52, 8) -} - -Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, false, 52, 8) -} - -function checkInt (buf, value, offset, ext, max, min) { - if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') - if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') - if (offset + ext > buf.length) throw new RangeError('Index out of range') -} - -Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) - } - - var mul = 1 - var i = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) - } - - var i = byteLength - 1 - var mul = 1 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) - this[offset] = (value & 0xff) - return offset + 1 -} - -Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 -} - -Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 -} - -Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset + 3] = (value >>> 24) - this[offset + 2] = (value >>> 16) - this[offset + 1] = (value >>> 8) - this[offset] = (value & 0xff) - return offset + 4 -} - -Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 -} - -Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) - - checkInt(this, value, offset, byteLength, limit - 1, -limit) - } - - var i = 0 - var mul = 1 - var sub = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { - sub = 1 - } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) - - checkInt(this, value, offset, byteLength, limit - 1, -limit) - } - - var i = byteLength - 1 - var mul = 1 - var sub = 0 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { - sub = 1 - } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) - if (value < 0) value = 0xff + value + 1 - this[offset] = (value & 0xff) - return offset + 1 -} - -Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 -} - -Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 -} - -Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - this[offset + 2] = (value >>> 16) - this[offset + 3] = (value >>> 24) - return offset + 4 -} - -Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - if (value < 0) value = 0xffffffff + value + 1 - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 -} - -function checkIEEE754 (buf, value, offset, ext, max, min) { - if (offset + ext > buf.length) throw new RangeError('Index out of range') - if (offset < 0) throw new RangeError('Index out of range') -} - -function writeFloat (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) - } - ieee754.write(buf, value, offset, littleEndian, 23, 4) - return offset + 4 -} - -Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { - return writeFloat(this, value, offset, true, noAssert) -} - -Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { - return writeFloat(this, value, offset, false, noAssert) -} - -function writeDouble (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) - } - ieee754.write(buf, value, offset, littleEndian, 52, 8) - return offset + 8 -} - -Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { - return writeDouble(this, value, offset, true, noAssert) -} - -Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { - return writeDouble(this, value, offset, false, noAssert) -} - -// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) -Buffer.prototype.copy = function copy (target, targetStart, start, end) { - if (!start) start = 0 - if (!end && end !== 0) end = this.length - if (targetStart >= target.length) targetStart = target.length - if (!targetStart) targetStart = 0 - if (end > 0 && end < start) end = start - - // Copy 0 bytes; we're done - if (end === start) return 0 - if (target.length === 0 || this.length === 0) return 0 - - // Fatal error conditions - if (targetStart < 0) { - throw new RangeError('targetStart out of bounds') - } - if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds') - if (end < 0) throw new RangeError('sourceEnd out of bounds') - - // Are we oob? - if (end > this.length) end = this.length - if (target.length - targetStart < end - start) { - end = target.length - targetStart + start - } - - var len = end - start - var i - - if (this === target && start < targetStart && targetStart < end) { - // descending copy from end - for (i = len - 1; i >= 0; --i) { - target[i + targetStart] = this[i + start] - } - } else if (len < 1000) { - // ascending copy from start - for (i = 0; i < len; ++i) { - target[i + targetStart] = this[i + start] - } - } else { - Uint8Array.prototype.set.call( - target, - this.subarray(start, start + len), - targetStart - ) - } - - return len -} - -// Usage: -// buffer.fill(number[, offset[, end]]) -// buffer.fill(buffer[, offset[, end]]) -// buffer.fill(string[, offset[, end]][, encoding]) -Buffer.prototype.fill = function fill (val, start, end, encoding) { - // Handle string cases: - if (typeof val === 'string') { - if (typeof start === 'string') { - encoding = start - start = 0 - end = this.length - } else if (typeof end === 'string') { - encoding = end - end = this.length - } - if (val.length === 1) { - var code = val.charCodeAt(0) - if (code < 256) { - val = code - } - } - if (encoding !== undefined && typeof encoding !== 'string') { - throw new TypeError('encoding must be a string') - } - if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { - throw new TypeError('Unknown encoding: ' + encoding) - } - } else if (typeof val === 'number') { - val = val & 255 - } - - // Invalid ranges are not set to a default, so can range check early. - if (start < 0 || this.length < start || this.length < end) { - throw new RangeError('Out of range index') - } - - if (end <= start) { - return this - } - - start = start >>> 0 - end = end === undefined ? this.length : end >>> 0 - - if (!val) val = 0 - - var i - if (typeof val === 'number') { - for (i = start; i < end; ++i) { - this[i] = val - } - } else { - var bytes = Buffer.isBuffer(val) - ? val - : new Buffer(val, encoding) - var len = bytes.length - for (i = 0; i < end - start; ++i) { - this[i + start] = bytes[i % len] - } - } - - return this -} - -// HELPER FUNCTIONS -// ================ - -var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g - -function base64clean (str) { - // Node strips out invalid characters like \n and \t from the string, base64-js does not - str = str.trim().replace(INVALID_BASE64_RE, '') - // Node converts strings with length < 2 to '' - if (str.length < 2) return '' - // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not - while (str.length % 4 !== 0) { - str = str + '=' - } - return str -} - -function toHex (n) { - if (n < 16) return '0' + n.toString(16) - return n.toString(16) -} - -function utf8ToBytes (string, units) { - units = units || Infinity - var codePoint - var length = string.length - var leadSurrogate = null - var bytes = [] - - for (var i = 0; i < length; ++i) { - codePoint = string.charCodeAt(i) - - // is surrogate component - if (codePoint > 0xD7FF && codePoint < 0xE000) { - // last char was a lead - if (!leadSurrogate) { - // no lead yet - if (codePoint > 0xDBFF) { - // unexpected trail - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } else if (i + 1 === length) { - // unpaired lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } - - // valid lead - leadSurrogate = codePoint - - continue - } - - // 2 leads in a row - if (codePoint < 0xDC00) { - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - leadSurrogate = codePoint - continue - } - - // valid surrogate pair - codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 - } else if (leadSurrogate) { - // valid bmp char, but last char was a lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - } - - leadSurrogate = null - - // encode utf8 - if (codePoint < 0x80) { - if ((units -= 1) < 0) break - bytes.push(codePoint) - } else if (codePoint < 0x800) { - if ((units -= 2) < 0) break - bytes.push( - codePoint >> 0x6 | 0xC0, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x10000) { - if ((units -= 3) < 0) break - bytes.push( - codePoint >> 0xC | 0xE0, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x110000) { - if ((units -= 4) < 0) break - bytes.push( - codePoint >> 0x12 | 0xF0, - codePoint >> 0xC & 0x3F | 0x80, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) - } else { - throw new Error('Invalid code point') - } - } - - return bytes -} - -function asciiToBytes (str) { - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - // Node's code seems to be doing this and not & 0x7F.. - byteArray.push(str.charCodeAt(i) & 0xFF) - } - return byteArray -} - -function utf16leToBytes (str, units) { - var c, hi, lo - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - if ((units -= 2) < 0) break - - c = str.charCodeAt(i) - hi = c >> 8 - lo = c % 256 - byteArray.push(lo) - byteArray.push(hi) - } - - return byteArray -} - -function base64ToBytes (str) { - return base64.toByteArray(base64clean(str)) -} - -function blitBuffer (src, dst, offset, length) { - for (var i = 0; i < length; ++i) { - if ((i + offset >= dst.length) || (i >= src.length)) break - dst[i + offset] = src[i] - } - return i -} - -// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView` -function isArrayBufferView (obj) { - return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj) -} - -function numberIsNaN (obj) { - return obj !== obj // eslint-disable-line no-self-compare -} - -},{"base64-js":1,"ieee754":3}],3:[function(require,module,exports){ -exports.read = function (buffer, offset, isLE, mLen, nBytes) { - var e, m - var eLen = nBytes * 8 - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var nBits = -7 - var i = isLE ? (nBytes - 1) : 0 - var d = isLE ? -1 : 1 - var s = buffer[offset + i] - - i += d - - e = s & ((1 << (-nBits)) - 1) - s >>= (-nBits) - nBits += eLen - for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {} - - m = e & ((1 << (-nBits)) - 1) - e >>= (-nBits) - nBits += mLen - for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {} - - if (e === 0) { - e = 1 - eBias - } else if (e === eMax) { - return m ? NaN : ((s ? -1 : 1) * Infinity) - } else { - m = m + Math.pow(2, mLen) - e = e - eBias - } - return (s ? -1 : 1) * m * Math.pow(2, e - mLen) -} - -exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { - var e, m, c - var eLen = nBytes * 8 - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) - var i = isLE ? 0 : (nBytes - 1) - var d = isLE ? 1 : -1 - var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 - - value = Math.abs(value) - - if (isNaN(value) || value === Infinity) { - m = isNaN(value) ? 1 : 0 - e = eMax - } else { - e = Math.floor(Math.log(value) / Math.LN2) - if (value * (c = Math.pow(2, -e)) < 1) { - e-- - c *= 2 - } - if (e + eBias >= 1) { - value += rt / c - } else { - value += rt * Math.pow(2, 1 - eBias) - } - if (value * c >= 2) { - e++ - c /= 2 - } - - if (e + eBias >= eMax) { - m = 0 - e = eMax - } else if (e + eBias >= 1) { - m = (value * c - 1) * Math.pow(2, mLen) - e = e + eBias - } else { - m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) - e = 0 - } - } - - for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} - - e = (e << mLen) | m - eLen += mLen - for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} - - buffer[offset + i - d] |= s * 128 -} - -},{}],4:[function(require,module,exports){ -window.basex = require('base-x') -},{"base-x":5}],5:[function(require,module,exports){ -// base-x encoding -// Forked from https://github.com/cryptocoinjs/bs58 -// Originally written by Mike Hearn for BitcoinJ -// Copyright (c) 2011 Google Inc -// Ported to JavaScript by Stefan Thomas -// Merged Buffer refactorings from base58-native by Stephen Pair -// Copyright (c) 2013 BitPay Inc - -var Buffer = require('safe-buffer').Buffer - -module.exports = function base (ALPHABET) { - var ALPHABET_MAP = {} - var BASE = ALPHABET.length - var LEADER = ALPHABET.charAt(0) - - // pre-compute lookup table - for (var z = 0; z < ALPHABET.length; z++) { - var x = ALPHABET.charAt(z) - - if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous') - ALPHABET_MAP[x] = z - } - - function encode (source) { - if (source.length === 0) return '' - - var digits = [0] - for (var i = 0; i < source.length; ++i) { - for (var j = 0, carry = source[i]; j < digits.length; ++j) { - carry += digits[j] << 8 - digits[j] = carry % BASE - carry = (carry / BASE) | 0 - } - - while (carry > 0) { - digits.push(carry % BASE) - carry = (carry / BASE) | 0 - } - } - - var string = '' - - // deal with leading zeros - for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += ALPHABET[0] - // convert digits to a string - for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]] - - return string - } - - function decodeUnsafe (string) { - if (string.length === 0) return Buffer.allocUnsafe(0) - - var bytes = [0] - for (var i = 0; i < string.length; i++) { - var value = ALPHABET_MAP[string[i]] - if (value === undefined) return - - for (var j = 0, carry = value; j < bytes.length; ++j) { - carry += bytes[j] * BASE - bytes[j] = carry & 0xff - carry >>= 8 - } - - while (carry > 0) { - bytes.push(carry & 0xff) - carry >>= 8 - } - } - - // deal with leading zeros - for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) { - bytes.push(0) - } - - return Buffer.from(bytes.reverse()) - } - - function decode (string) { - var buffer = decodeUnsafe(string) - if (buffer) return buffer - - throw new Error('Non-base' + BASE + ' character') - } - - return { - encode: encode, - decodeUnsafe: decodeUnsafe, - decode: decode - } -} - -},{"safe-buffer":6}],6:[function(require,module,exports){ -module.exports = require('buffer') - -},{"buffer":2}]},{},[4])(4) -}); \ No newline at end of file diff --git a/src/js/bchaddrjs-0.2.1.js b/src/js/bchaddrjs-0.2.1.js deleted file mode 100644 index 28f67e9..0000000 --- a/src/js/bchaddrjs-0.2.1.js +++ /dev/null @@ -1,9359 +0,0 @@ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.bchaddr = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o 0) { - digits.push(carry % BASE) - carry = (carry / BASE) | 0 - } - } - - var string = '' - - // deal with leading zeros - for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += LEADER - // convert digits to a string - for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]] - - return string - } - - function decodeUnsafe (string) { - if (typeof string !== 'string') throw new TypeError('Expected String') - if (string.length === 0) return Buffer.allocUnsafe(0) - - var bytes = [0] - for (var i = 0; i < string.length; i++) { - var value = ALPHABET_MAP[string[i]] - if (value === undefined) return - - for (var j = 0, carry = value; j < bytes.length; ++j) { - carry += bytes[j] * BASE - bytes[j] = carry & 0xff - carry >>= 8 - } - - while (carry > 0) { - bytes.push(carry & 0xff) - carry >>= 8 - } - } - - // deal with leading zeros - for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) { - bytes.push(0) - } - - return Buffer.from(bytes.reverse()) - } - - function decode (string) { - var buffer = decodeUnsafe(string) - if (buffer) return buffer - - throw new Error('Non-base' + BASE + ' character') - } - - return { - encode: encode, - decodeUnsafe: decodeUnsafe, - decode: decode - } -} - -},{"safe-buffer":40}],2:[function(require,module,exports){ -'use strict' - -exports.byteLength = byteLength -exports.toByteArray = toByteArray -exports.fromByteArray = fromByteArray - -var lookup = [] -var revLookup = [] -var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array - -var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' -for (var i = 0, len = code.length; i < len; ++i) { - lookup[i] = code[i] - revLookup[code.charCodeAt(i)] = i -} - -revLookup['-'.charCodeAt(0)] = 62 -revLookup['_'.charCodeAt(0)] = 63 - -function placeHoldersCount (b64) { - var len = b64.length - if (len % 4 > 0) { - throw new Error('Invalid string. Length must be a multiple of 4') - } - - // the number of equal signs (place holders) - // if there are two placeholders, than the two characters before it - // represent one byte - // if there is only one, then the three characters before it represent 2 bytes - // this is just a cheap hack to not do indexOf twice - return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0 -} - -function byteLength (b64) { - // base64 is 4/3 + up to two characters of the original data - return (b64.length * 3 / 4) - placeHoldersCount(b64) -} - -function toByteArray (b64) { - var i, l, tmp, placeHolders, arr - var len = b64.length - placeHolders = placeHoldersCount(b64) - - arr = new Arr((len * 3 / 4) - placeHolders) - - // if there are placeholders, only get up to the last complete 4 chars - l = placeHolders > 0 ? len - 4 : len - - var L = 0 - - for (i = 0; i < l; i += 4) { - tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)] - arr[L++] = (tmp >> 16) & 0xFF - arr[L++] = (tmp >> 8) & 0xFF - arr[L++] = tmp & 0xFF - } - - if (placeHolders === 2) { - tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4) - arr[L++] = tmp & 0xFF - } else if (placeHolders === 1) { - tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2) - arr[L++] = (tmp >> 8) & 0xFF - arr[L++] = tmp & 0xFF - } - - return arr -} - -function tripletToBase64 (num) { - return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F] -} - -function encodeChunk (uint8, start, end) { - var tmp - var output = [] - for (var i = start; i < end; i += 3) { - tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]) - output.push(tripletToBase64(tmp)) - } - return output.join('') -} - -function fromByteArray (uint8) { - var tmp - var len = uint8.length - var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes - var output = '' - var parts = [] - var maxChunkLength = 16383 // must be multiple of 3 - - // go through the array every three bytes, we'll deal with trailing stuff later - for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { - parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength))) - } - - // pad the end with zeros, but make sure to not forget the extra bytes - if (extraBytes === 1) { - tmp = uint8[len - 1] - output += lookup[tmp >> 2] - output += lookup[(tmp << 4) & 0x3F] - output += '==' - } else if (extraBytes === 2) { - tmp = (uint8[len - 2] << 8) + (uint8[len - 1]) - output += lookup[tmp >> 10] - output += lookup[(tmp >> 4) & 0x3F] - output += lookup[(tmp << 2) & 0x3F] - output += '=' - } - - parts.push(output) - - return parts.join('') -} - -},{}],3:[function(require,module,exports){ -var bigInt = (function (undefined) { - "use strict"; - - var BASE = 1e7, - LOG_BASE = 7, - MAX_INT = 9007199254740992, - MAX_INT_ARR = smallToArray(MAX_INT), - LOG_MAX_INT = Math.log(MAX_INT); - - function Integer(v, radix) { - if (typeof v === "undefined") return Integer[0]; - if (typeof radix !== "undefined") return +radix === 10 ? parseValue(v) : parseBase(v, radix); - return parseValue(v); - } - - function BigInteger(value, sign) { - this.value = value; - this.sign = sign; - this.isSmall = false; - } - BigInteger.prototype = Object.create(Integer.prototype); - - function SmallInteger(value) { - this.value = value; - this.sign = value < 0; - this.isSmall = true; - } - SmallInteger.prototype = Object.create(Integer.prototype); - - function isPrecise(n) { - return -MAX_INT < n && n < MAX_INT; - } - - function smallToArray(n) { // For performance reasons doesn't reference BASE, need to change this function if BASE changes - if (n < 1e7) - return [n]; - if (n < 1e14) - return [n % 1e7, Math.floor(n / 1e7)]; - return [n % 1e7, Math.floor(n / 1e7) % 1e7, Math.floor(n / 1e14)]; - } - - function arrayToSmall(arr) { // If BASE changes this function may need to change - trim(arr); - var length = arr.length; - if (length < 4 && compareAbs(arr, MAX_INT_ARR) < 0) { - switch (length) { - case 0: return 0; - case 1: return arr[0]; - case 2: return arr[0] + arr[1] * BASE; - default: return arr[0] + (arr[1] + arr[2] * BASE) * BASE; - } - } - return arr; - } - - function trim(v) { - var i = v.length; - while (v[--i] === 0); - v.length = i + 1; - } - - function createArray(length) { // function shamelessly stolen from Yaffle's library https://github.com/Yaffle/BigInteger - var x = new Array(length); - var i = -1; - while (++i < length) { - x[i] = 0; - } - return x; - } - - function truncate(n) { - if (n > 0) return Math.floor(n); - return Math.ceil(n); - } - - function add(a, b) { // assumes a and b are arrays with a.length >= b.length - var l_a = a.length, - l_b = b.length, - r = new Array(l_a), - carry = 0, - base = BASE, - sum, i; - for (i = 0; i < l_b; i++) { - sum = a[i] + b[i] + carry; - carry = sum >= base ? 1 : 0; - r[i] = sum - carry * base; - } - while (i < l_a) { - sum = a[i] + carry; - carry = sum === base ? 1 : 0; - r[i++] = sum - carry * base; - } - if (carry > 0) r.push(carry); - return r; - } - - function addAny(a, b) { - if (a.length >= b.length) return add(a, b); - return add(b, a); - } - - function addSmall(a, carry) { // assumes a is array, carry is number with 0 <= carry < MAX_INT - var l = a.length, - r = new Array(l), - base = BASE, - sum, i; - for (i = 0; i < l; i++) { - sum = a[i] - base + carry; - carry = Math.floor(sum / base); - r[i] = sum - carry * base; - carry += 1; - } - while (carry > 0) { - r[i++] = carry % base; - carry = Math.floor(carry / base); - } - return r; - } - - BigInteger.prototype.add = function (v) { - var n = parseValue(v); - if (this.sign !== n.sign) { - return this.subtract(n.negate()); - } - var a = this.value, b = n.value; - if (n.isSmall) { - return new BigInteger(addSmall(a, Math.abs(b)), this.sign); - } - return new BigInteger(addAny(a, b), this.sign); - }; - BigInteger.prototype.plus = BigInteger.prototype.add; - - SmallInteger.prototype.add = function (v) { - var n = parseValue(v); - var a = this.value; - if (a < 0 !== n.sign) { - return this.subtract(n.negate()); - } - var b = n.value; - if (n.isSmall) { - if (isPrecise(a + b)) return new SmallInteger(a + b); - b = smallToArray(Math.abs(b)); - } - return new BigInteger(addSmall(b, Math.abs(a)), a < 0); - }; - SmallInteger.prototype.plus = SmallInteger.prototype.add; - - function subtract(a, b) { // assumes a and b are arrays with a >= b - var a_l = a.length, - b_l = b.length, - r = new Array(a_l), - borrow = 0, - base = BASE, - i, difference; - for (i = 0; i < b_l; i++) { - difference = a[i] - borrow - b[i]; - if (difference < 0) { - difference += base; - borrow = 1; - } else borrow = 0; - r[i] = difference; - } - for (i = b_l; i < a_l; i++) { - difference = a[i] - borrow; - if (difference < 0) difference += base; - else { - r[i++] = difference; - break; - } - r[i] = difference; - } - for (; i < a_l; i++) { - r[i] = a[i]; - } - trim(r); - return r; - } - - function subtractAny(a, b, sign) { - var value; - if (compareAbs(a, b) >= 0) { - value = subtract(a,b); - } else { - value = subtract(b, a); - sign = !sign; - } - value = arrayToSmall(value); - if (typeof value === "number") { - if (sign) value = -value; - return new SmallInteger(value); - } - return new BigInteger(value, sign); - } - - function subtractSmall(a, b, sign) { // assumes a is array, b is number with 0 <= b < MAX_INT - var l = a.length, - r = new Array(l), - carry = -b, - base = BASE, - i, difference; - for (i = 0; i < l; i++) { - difference = a[i] + carry; - carry = Math.floor(difference / base); - difference %= base; - r[i] = difference < 0 ? difference + base : difference; - } - r = arrayToSmall(r); - if (typeof r === "number") { - if (sign) r = -r; - return new SmallInteger(r); - } return new BigInteger(r, sign); - } - - BigInteger.prototype.subtract = function (v) { - var n = parseValue(v); - if (this.sign !== n.sign) { - return this.add(n.negate()); - } - var a = this.value, b = n.value; - if (n.isSmall) - return subtractSmall(a, Math.abs(b), this.sign); - return subtractAny(a, b, this.sign); - }; - BigInteger.prototype.minus = BigInteger.prototype.subtract; - - SmallInteger.prototype.subtract = function (v) { - var n = parseValue(v); - var a = this.value; - if (a < 0 !== n.sign) { - return this.add(n.negate()); - } - var b = n.value; - if (n.isSmall) { - return new SmallInteger(a - b); - } - return subtractSmall(b, Math.abs(a), a >= 0); - }; - SmallInteger.prototype.minus = SmallInteger.prototype.subtract; - - BigInteger.prototype.negate = function () { - return new BigInteger(this.value, !this.sign); - }; - SmallInteger.prototype.negate = function () { - var sign = this.sign; - var small = new SmallInteger(-this.value); - small.sign = !sign; - return small; - }; - - BigInteger.prototype.abs = function () { - return new BigInteger(this.value, false); - }; - SmallInteger.prototype.abs = function () { - return new SmallInteger(Math.abs(this.value)); - }; - - function multiplyLong(a, b) { - var a_l = a.length, - b_l = b.length, - l = a_l + b_l, - r = createArray(l), - base = BASE, - product, carry, i, a_i, b_j; - for (i = 0; i < a_l; ++i) { - a_i = a[i]; - for (var j = 0; j < b_l; ++j) { - b_j = b[j]; - product = a_i * b_j + r[i + j]; - carry = Math.floor(product / base); - r[i + j] = product - carry * base; - r[i + j + 1] += carry; - } - } - trim(r); - return r; - } - - function multiplySmall(a, b) { // assumes a is array, b is number with |b| < BASE - var l = a.length, - r = new Array(l), - base = BASE, - carry = 0, - product, i; - for (i = 0; i < l; i++) { - product = a[i] * b + carry; - carry = Math.floor(product / base); - r[i] = product - carry * base; - } - while (carry > 0) { - r[i++] = carry % base; - carry = Math.floor(carry / base); - } - return r; - } - - function shiftLeft(x, n) { - var r = []; - while (n-- > 0) r.push(0); - return r.concat(x); - } - - function multiplyKaratsuba(x, y) { - var n = Math.max(x.length, y.length); - - if (n <= 30) return multiplyLong(x, y); - n = Math.ceil(n / 2); - - var b = x.slice(n), - a = x.slice(0, n), - d = y.slice(n), - c = y.slice(0, n); - - var ac = multiplyKaratsuba(a, c), - bd = multiplyKaratsuba(b, d), - abcd = multiplyKaratsuba(addAny(a, b), addAny(c, d)); - - var product = addAny(addAny(ac, shiftLeft(subtract(subtract(abcd, ac), bd), n)), shiftLeft(bd, 2 * n)); - trim(product); - return product; - } - - // The following function is derived from a surface fit of a graph plotting the performance difference - // between long multiplication and karatsuba multiplication versus the lengths of the two arrays. - function useKaratsuba(l1, l2) { - return -0.012 * l1 - 0.012 * l2 + 0.000015 * l1 * l2 > 0; - } - - BigInteger.prototype.multiply = function (v) { - var n = parseValue(v), - a = this.value, b = n.value, - sign = this.sign !== n.sign, - abs; - if (n.isSmall) { - if (b === 0) return Integer[0]; - if (b === 1) return this; - if (b === -1) return this.negate(); - abs = Math.abs(b); - if (abs < BASE) { - return new BigInteger(multiplySmall(a, abs), sign); - } - b = smallToArray(abs); - } - if (useKaratsuba(a.length, b.length)) // Karatsuba is only faster for certain array sizes - return new BigInteger(multiplyKaratsuba(a, b), sign); - return new BigInteger(multiplyLong(a, b), sign); - }; - - BigInteger.prototype.times = BigInteger.prototype.multiply; - - function multiplySmallAndArray(a, b, sign) { // a >= 0 - if (a < BASE) { - return new BigInteger(multiplySmall(b, a), sign); - } - return new BigInteger(multiplyLong(b, smallToArray(a)), sign); - } - SmallInteger.prototype._multiplyBySmall = function (a) { - if (isPrecise(a.value * this.value)) { - return new SmallInteger(a.value * this.value); - } - return multiplySmallAndArray(Math.abs(a.value), smallToArray(Math.abs(this.value)), this.sign !== a.sign); - }; - BigInteger.prototype._multiplyBySmall = function (a) { - if (a.value === 0) return Integer[0]; - if (a.value === 1) return this; - if (a.value === -1) return this.negate(); - return multiplySmallAndArray(Math.abs(a.value), this.value, this.sign !== a.sign); - }; - SmallInteger.prototype.multiply = function (v) { - return parseValue(v)._multiplyBySmall(this); - }; - SmallInteger.prototype.times = SmallInteger.prototype.multiply; - - function square(a) { - var l = a.length, - r = createArray(l + l), - base = BASE, - product, carry, i, a_i, a_j; - for (i = 0; i < l; i++) { - a_i = a[i]; - for (var j = 0; j < l; j++) { - a_j = a[j]; - product = a_i * a_j + r[i + j]; - carry = Math.floor(product / base); - r[i + j] = product - carry * base; - r[i + j + 1] += carry; - } - } - trim(r); - return r; - } - - BigInteger.prototype.square = function () { - return new BigInteger(square(this.value), false); - }; - - SmallInteger.prototype.square = function () { - var value = this.value * this.value; - if (isPrecise(value)) return new SmallInteger(value); - return new BigInteger(square(smallToArray(Math.abs(this.value))), false); - }; - - function divMod1(a, b) { // Left over from previous version. Performs faster than divMod2 on smaller input sizes. - var a_l = a.length, - b_l = b.length, - base = BASE, - result = createArray(b.length), - divisorMostSignificantDigit = b[b_l - 1], - // normalization - lambda = Math.ceil(base / (2 * divisorMostSignificantDigit)), - remainder = multiplySmall(a, lambda), - divisor = multiplySmall(b, lambda), - quotientDigit, shift, carry, borrow, i, l, q; - if (remainder.length <= a_l) remainder.push(0); - divisor.push(0); - divisorMostSignificantDigit = divisor[b_l - 1]; - for (shift = a_l - b_l; shift >= 0; shift--) { - quotientDigit = base - 1; - if (remainder[shift + b_l] !== divisorMostSignificantDigit) { - quotientDigit = Math.floor((remainder[shift + b_l] * base + remainder[shift + b_l - 1]) / divisorMostSignificantDigit); - } - // quotientDigit <= base - 1 - carry = 0; - borrow = 0; - l = divisor.length; - for (i = 0; i < l; i++) { - carry += quotientDigit * divisor[i]; - q = Math.floor(carry / base); - borrow += remainder[shift + i] - (carry - q * base); - carry = q; - if (borrow < 0) { - remainder[shift + i] = borrow + base; - borrow = -1; - } else { - remainder[shift + i] = borrow; - borrow = 0; - } - } - while (borrow !== 0) { - quotientDigit -= 1; - carry = 0; - for (i = 0; i < l; i++) { - carry += remainder[shift + i] - base + divisor[i]; - if (carry < 0) { - remainder[shift + i] = carry + base; - carry = 0; - } else { - remainder[shift + i] = carry; - carry = 1; - } - } - borrow += carry; - } - result[shift] = quotientDigit; - } - // denormalization - remainder = divModSmall(remainder, lambda)[0]; - return [arrayToSmall(result), arrayToSmall(remainder)]; - } - - function divMod2(a, b) { // Implementation idea shamelessly stolen from Silent Matt's library http://silentmatt.com/biginteger/ - // Performs faster than divMod1 on larger input sizes. - var a_l = a.length, - b_l = b.length, - result = [], - part = [], - base = BASE, - guess, xlen, highx, highy, check; - while (a_l) { - part.unshift(a[--a_l]); - trim(part); - if (compareAbs(part, b) < 0) { - result.push(0); - continue; - } - xlen = part.length; - highx = part[xlen - 1] * base + part[xlen - 2]; - highy = b[b_l - 1] * base + b[b_l - 2]; - if (xlen > b_l) { - highx = (highx + 1) * base; - } - guess = Math.ceil(highx / highy); - do { - check = multiplySmall(b, guess); - if (compareAbs(check, part) <= 0) break; - guess--; - } while (guess); - result.push(guess); - part = subtract(part, check); - } - result.reverse(); - return [arrayToSmall(result), arrayToSmall(part)]; - } - - function divModSmall(value, lambda) { - var length = value.length, - quotient = createArray(length), - base = BASE, - i, q, remainder, divisor; - remainder = 0; - for (i = length - 1; i >= 0; --i) { - divisor = remainder * base + value[i]; - q = truncate(divisor / lambda); - remainder = divisor - q * lambda; - quotient[i] = q | 0; - } - return [quotient, remainder | 0]; - } - - function divModAny(self, v) { - var value, n = parseValue(v); - var a = self.value, b = n.value; - var quotient; - if (b === 0) throw new Error("Cannot divide by zero"); - if (self.isSmall) { - if (n.isSmall) { - return [new SmallInteger(truncate(a / b)), new SmallInteger(a % b)]; - } - return [Integer[0], self]; - } - if (n.isSmall) { - if (b === 1) return [self, Integer[0]]; - if (b == -1) return [self.negate(), Integer[0]]; - var abs = Math.abs(b); - if (abs < BASE) { - value = divModSmall(a, abs); - quotient = arrayToSmall(value[0]); - var remainder = value[1]; - if (self.sign) remainder = -remainder; - if (typeof quotient === "number") { - if (self.sign !== n.sign) quotient = -quotient; - return [new SmallInteger(quotient), new SmallInteger(remainder)]; - } - return [new BigInteger(quotient, self.sign !== n.sign), new SmallInteger(remainder)]; - } - b = smallToArray(abs); - } - var comparison = compareAbs(a, b); - if (comparison === -1) return [Integer[0], self]; - if (comparison === 0) return [Integer[self.sign === n.sign ? 1 : -1], Integer[0]]; - - // divMod1 is faster on smaller input sizes - if (a.length + b.length <= 200) - value = divMod1(a, b); - else value = divMod2(a, b); - - quotient = value[0]; - var qSign = self.sign !== n.sign, - mod = value[1], - mSign = self.sign; - if (typeof quotient === "number") { - if (qSign) quotient = -quotient; - quotient = new SmallInteger(quotient); - } else quotient = new BigInteger(quotient, qSign); - if (typeof mod === "number") { - if (mSign) mod = -mod; - mod = new SmallInteger(mod); - } else mod = new BigInteger(mod, mSign); - return [quotient, mod]; - } - - BigInteger.prototype.divmod = function (v) { - var result = divModAny(this, v); - return { - quotient: result[0], - remainder: result[1] - }; - }; - SmallInteger.prototype.divmod = BigInteger.prototype.divmod; - - BigInteger.prototype.divide = function (v) { - return divModAny(this, v)[0]; - }; - SmallInteger.prototype.over = SmallInteger.prototype.divide = BigInteger.prototype.over = BigInteger.prototype.divide; - - BigInteger.prototype.mod = function (v) { - return divModAny(this, v)[1]; - }; - SmallInteger.prototype.remainder = SmallInteger.prototype.mod = BigInteger.prototype.remainder = BigInteger.prototype.mod; - - BigInteger.prototype.pow = function (v) { - var n = parseValue(v), - a = this.value, - b = n.value, - value, x, y; - if (b === 0) return Integer[1]; - if (a === 0) return Integer[0]; - if (a === 1) return Integer[1]; - if (a === -1) return n.isEven() ? Integer[1] : Integer[-1]; - if (n.sign) { - return Integer[0]; - } - if (!n.isSmall) throw new Error("The exponent " + n.toString() + " is too large."); - if (this.isSmall) { - if (isPrecise(value = Math.pow(a, b))) - return new SmallInteger(truncate(value)); - } - x = this; - y = Integer[1]; - while (true) { - if (b & 1 === 1) { - y = y.times(x); - --b; - } - if (b === 0) break; - b /= 2; - x = x.square(); - } - return y; - }; - SmallInteger.prototype.pow = BigInteger.prototype.pow; - - BigInteger.prototype.modPow = function (exp, mod) { - exp = parseValue(exp); - mod = parseValue(mod); - if (mod.isZero()) throw new Error("Cannot take modPow with modulus 0"); - var r = Integer[1], - base = this.mod(mod); - while (exp.isPositive()) { - if (base.isZero()) return Integer[0]; - if (exp.isOdd()) r = r.multiply(base).mod(mod); - exp = exp.divide(2); - base = base.square().mod(mod); - } - return r; - }; - SmallInteger.prototype.modPow = BigInteger.prototype.modPow; - - function compareAbs(a, b) { - if (a.length !== b.length) { - return a.length > b.length ? 1 : -1; - } - for (var i = a.length - 1; i >= 0; i--) { - if (a[i] !== b[i]) return a[i] > b[i] ? 1 : -1; - } - return 0; - } - - BigInteger.prototype.compareAbs = function (v) { - var n = parseValue(v), - a = this.value, - b = n.value; - if (n.isSmall) return 1; - return compareAbs(a, b); - }; - SmallInteger.prototype.compareAbs = function (v) { - var n = parseValue(v), - a = Math.abs(this.value), - b = n.value; - if (n.isSmall) { - b = Math.abs(b); - return a === b ? 0 : a > b ? 1 : -1; - } - return -1; - }; - - BigInteger.prototype.compare = function (v) { - // See discussion about comparison with Infinity: - // https://github.com/peterolson/BigInteger.js/issues/61 - if (v === Infinity) { - return -1; - } - if (v === -Infinity) { - return 1; - } - - var n = parseValue(v), - a = this.value, - b = n.value; - if (this.sign !== n.sign) { - return n.sign ? 1 : -1; - } - if (n.isSmall) { - return this.sign ? -1 : 1; - } - return compareAbs(a, b) * (this.sign ? -1 : 1); - }; - BigInteger.prototype.compareTo = BigInteger.prototype.compare; - - SmallInteger.prototype.compare = function (v) { - if (v === Infinity) { - return -1; - } - if (v === -Infinity) { - return 1; - } - - var n = parseValue(v), - a = this.value, - b = n.value; - if (n.isSmall) { - return a == b ? 0 : a > b ? 1 : -1; - } - if (a < 0 !== n.sign) { - return a < 0 ? -1 : 1; - } - return a < 0 ? 1 : -1; - }; - SmallInteger.prototype.compareTo = SmallInteger.prototype.compare; - - BigInteger.prototype.equals = function (v) { - return this.compare(v) === 0; - }; - SmallInteger.prototype.eq = SmallInteger.prototype.equals = BigInteger.prototype.eq = BigInteger.prototype.equals; - - BigInteger.prototype.notEquals = function (v) { - return this.compare(v) !== 0; - }; - SmallInteger.prototype.neq = SmallInteger.prototype.notEquals = BigInteger.prototype.neq = BigInteger.prototype.notEquals; - - BigInteger.prototype.greater = function (v) { - return this.compare(v) > 0; - }; - SmallInteger.prototype.gt = SmallInteger.prototype.greater = BigInteger.prototype.gt = BigInteger.prototype.greater; - - BigInteger.prototype.lesser = function (v) { - return this.compare(v) < 0; - }; - SmallInteger.prototype.lt = SmallInteger.prototype.lesser = BigInteger.prototype.lt = BigInteger.prototype.lesser; - - BigInteger.prototype.greaterOrEquals = function (v) { - return this.compare(v) >= 0; - }; - SmallInteger.prototype.geq = SmallInteger.prototype.greaterOrEquals = BigInteger.prototype.geq = BigInteger.prototype.greaterOrEquals; - - BigInteger.prototype.lesserOrEquals = function (v) { - return this.compare(v) <= 0; - }; - SmallInteger.prototype.leq = SmallInteger.prototype.lesserOrEquals = BigInteger.prototype.leq = BigInteger.prototype.lesserOrEquals; - - BigInteger.prototype.isEven = function () { - return (this.value[0] & 1) === 0; - }; - SmallInteger.prototype.isEven = function () { - return (this.value & 1) === 0; - }; - - BigInteger.prototype.isOdd = function () { - return (this.value[0] & 1) === 1; - }; - SmallInteger.prototype.isOdd = function () { - return (this.value & 1) === 1; - }; - - BigInteger.prototype.isPositive = function () { - return !this.sign; - }; - SmallInteger.prototype.isPositive = function () { - return this.value > 0; - }; - - BigInteger.prototype.isNegative = function () { - return this.sign; - }; - SmallInteger.prototype.isNegative = function () { - return this.value < 0; - }; - - BigInteger.prototype.isUnit = function () { - return false; - }; - SmallInteger.prototype.isUnit = function () { - return Math.abs(this.value) === 1; - }; - - BigInteger.prototype.isZero = function () { - return false; - }; - SmallInteger.prototype.isZero = function () { - return this.value === 0; - }; - BigInteger.prototype.isDivisibleBy = function (v) { - var n = parseValue(v); - var value = n.value; - if (value === 0) return false; - if (value === 1) return true; - if (value === 2) return this.isEven(); - return this.mod(n).equals(Integer[0]); - }; - SmallInteger.prototype.isDivisibleBy = BigInteger.prototype.isDivisibleBy; - - function isBasicPrime(v) { - var n = v.abs(); - if (n.isUnit()) return false; - if (n.equals(2) || n.equals(3) || n.equals(5)) return true; - if (n.isEven() || n.isDivisibleBy(3) || n.isDivisibleBy(5)) return false; - if (n.lesser(25)) return true; - // we don't know if it's prime: let the other functions figure it out - } - - BigInteger.prototype.isPrime = function () { - var isPrime = isBasicPrime(this); - if (isPrime !== undefined) return isPrime; - var n = this.abs(), - nPrev = n.prev(); - var a = [2, 3, 5, 7, 11, 13, 17, 19], - b = nPrev, - d, t, i, x; - while (b.isEven()) b = b.divide(2); - for (i = 0; i < a.length; i++) { - x = bigInt(a[i]).modPow(b, n); - if (x.equals(Integer[1]) || x.equals(nPrev)) continue; - for (t = true, d = b; t && d.lesser(nPrev) ; d = d.multiply(2)) { - x = x.square().mod(n); - if (x.equals(nPrev)) t = false; - } - if (t) return false; - } - return true; - }; - SmallInteger.prototype.isPrime = BigInteger.prototype.isPrime; - - BigInteger.prototype.isProbablePrime = function (iterations) { - var isPrime = isBasicPrime(this); - if (isPrime !== undefined) return isPrime; - var n = this.abs(); - var t = iterations === undefined ? 5 : iterations; - // use the Fermat primality test - for (var i = 0; i < t; i++) { - var a = bigInt.randBetween(2, n.minus(2)); - if (!a.modPow(n.prev(), n).isUnit()) return false; // definitely composite - } - return true; // large chance of being prime - }; - SmallInteger.prototype.isProbablePrime = BigInteger.prototype.isProbablePrime; - - BigInteger.prototype.modInv = function (n) { - var t = bigInt.zero, newT = bigInt.one, r = parseValue(n), newR = this.abs(), q, lastT, lastR; - while (!newR.equals(bigInt.zero)) { - q = r.divide(newR); - lastT = t; - lastR = r; - t = newT; - r = newR; - newT = lastT.subtract(q.multiply(newT)); - newR = lastR.subtract(q.multiply(newR)); - } - if (!r.equals(1)) throw new Error(this.toString() + " and " + n.toString() + " are not co-prime"); - if (t.compare(0) === -1) { - t = t.add(n); - } - if (this.isNegative()) { - return t.negate(); - } - return t; - }; - - SmallInteger.prototype.modInv = BigInteger.prototype.modInv; - - BigInteger.prototype.next = function () { - var value = this.value; - if (this.sign) { - return subtractSmall(value, 1, this.sign); - } - return new BigInteger(addSmall(value, 1), this.sign); - }; - SmallInteger.prototype.next = function () { - var value = this.value; - if (value + 1 < MAX_INT) return new SmallInteger(value + 1); - return new BigInteger(MAX_INT_ARR, false); - }; - - BigInteger.prototype.prev = function () { - var value = this.value; - if (this.sign) { - return new BigInteger(addSmall(value, 1), true); - } - return subtractSmall(value, 1, this.sign); - }; - SmallInteger.prototype.prev = function () { - var value = this.value; - if (value - 1 > -MAX_INT) return new SmallInteger(value - 1); - return new BigInteger(MAX_INT_ARR, true); - }; - - var powersOfTwo = [1]; - while (2 * powersOfTwo[powersOfTwo.length - 1] <= BASE) powersOfTwo.push(2 * powersOfTwo[powersOfTwo.length - 1]); - var powers2Length = powersOfTwo.length, highestPower2 = powersOfTwo[powers2Length - 1]; - - function shift_isSmall(n) { - return ((typeof n === "number" || typeof n === "string") && +Math.abs(n) <= BASE) || - (n instanceof BigInteger && n.value.length <= 1); - } - - BigInteger.prototype.shiftLeft = function (n) { - if (!shift_isSmall(n)) { - throw new Error(String(n) + " is too large for shifting."); - } - n = +n; - if (n < 0) return this.shiftRight(-n); - var result = this; - while (n >= powers2Length) { - result = result.multiply(highestPower2); - n -= powers2Length - 1; - } - return result.multiply(powersOfTwo[n]); - }; - SmallInteger.prototype.shiftLeft = BigInteger.prototype.shiftLeft; - - BigInteger.prototype.shiftRight = function (n) { - var remQuo; - if (!shift_isSmall(n)) { - throw new Error(String(n) + " is too large for shifting."); - } - n = +n; - if (n < 0) return this.shiftLeft(-n); - var result = this; - while (n >= powers2Length) { - if (result.isZero()) return result; - remQuo = divModAny(result, highestPower2); - result = remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0]; - n -= powers2Length - 1; - } - remQuo = divModAny(result, powersOfTwo[n]); - return remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0]; - }; - SmallInteger.prototype.shiftRight = BigInteger.prototype.shiftRight; - - function bitwise(x, y, fn) { - y = parseValue(y); - var xSign = x.isNegative(), ySign = y.isNegative(); - var xRem = xSign ? x.not() : x, - yRem = ySign ? y.not() : y; - var xDigit = 0, yDigit = 0; - var xDivMod = null, yDivMod = null; - var result = []; - while (!xRem.isZero() || !yRem.isZero()) { - xDivMod = divModAny(xRem, highestPower2); - xDigit = xDivMod[1].toJSNumber(); - if (xSign) { - xDigit = highestPower2 - 1 - xDigit; // two's complement for negative numbers - } - - yDivMod = divModAny(yRem, highestPower2); - yDigit = yDivMod[1].toJSNumber(); - if (ySign) { - yDigit = highestPower2 - 1 - yDigit; // two's complement for negative numbers - } - - xRem = xDivMod[0]; - yRem = yDivMod[0]; - result.push(fn(xDigit, yDigit)); - } - var sum = fn(xSign ? 1 : 0, ySign ? 1 : 0) !== 0 ? bigInt(-1) : bigInt(0); - for (var i = result.length - 1; i >= 0; i -= 1) { - sum = sum.multiply(highestPower2).add(bigInt(result[i])); - } - return sum; - } - - BigInteger.prototype.not = function () { - return this.negate().prev(); - }; - SmallInteger.prototype.not = BigInteger.prototype.not; - - BigInteger.prototype.and = function (n) { - return bitwise(this, n, function (a, b) { return a & b; }); - }; - SmallInteger.prototype.and = BigInteger.prototype.and; - - BigInteger.prototype.or = function (n) { - return bitwise(this, n, function (a, b) { return a | b; }); - }; - SmallInteger.prototype.or = BigInteger.prototype.or; - - BigInteger.prototype.xor = function (n) { - return bitwise(this, n, function (a, b) { return a ^ b; }); - }; - SmallInteger.prototype.xor = BigInteger.prototype.xor; - - var LOBMASK_I = 1 << 30, LOBMASK_BI = (BASE & -BASE) * (BASE & -BASE) | LOBMASK_I; - function roughLOB(n) { // get lowestOneBit (rough) - // SmallInteger: return Min(lowestOneBit(n), 1 << 30) - // BigInteger: return Min(lowestOneBit(n), 1 << 14) [BASE=1e7] - var v = n.value, x = typeof v === "number" ? v | LOBMASK_I : v[0] + v[1] * BASE | LOBMASK_BI; - return x & -x; - } - - function max(a, b) { - a = parseValue(a); - b = parseValue(b); - return a.greater(b) ? a : b; - } - function min(a, b) { - a = parseValue(a); - b = parseValue(b); - return a.lesser(b) ? a : b; - } - function gcd(a, b) { - a = parseValue(a).abs(); - b = parseValue(b).abs(); - if (a.equals(b)) return a; - if (a.isZero()) return b; - if (b.isZero()) return a; - var c = Integer[1], d, t; - while (a.isEven() && b.isEven()) { - d = Math.min(roughLOB(a), roughLOB(b)); - a = a.divide(d); - b = b.divide(d); - c = c.multiply(d); - } - while (a.isEven()) { - a = a.divide(roughLOB(a)); - } - do { - while (b.isEven()) { - b = b.divide(roughLOB(b)); - } - if (a.greater(b)) { - t = b; b = a; a = t; - } - b = b.subtract(a); - } while (!b.isZero()); - return c.isUnit() ? a : a.multiply(c); - } - function lcm(a, b) { - a = parseValue(a).abs(); - b = parseValue(b).abs(); - return a.divide(gcd(a, b)).multiply(b); - } - function randBetween(a, b) { - a = parseValue(a); - b = parseValue(b); - var low = min(a, b), high = max(a, b); - var range = high.subtract(low).add(1); - if (range.isSmall) return low.add(Math.floor(Math.random() * range)); - var length = range.value.length - 1; - var result = [], restricted = true; - for (var i = length; i >= 0; i--) { - var top = restricted ? range.value[i] : BASE; - var digit = truncate(Math.random() * top); - result.unshift(digit); - if (digit < top) restricted = false; - } - result = arrayToSmall(result); - return low.add(typeof result === "number" ? new SmallInteger(result) : new BigInteger(result, false)); - } - var parseBase = function (text, base) { - var length = text.length; - var i; - var absBase = Math.abs(base); - for(var i = 0; i < length; i++) { - var c = text[i].toLowerCase(); - if(c === "-") continue; - if(/[a-z0-9]/.test(c)) { - if(/[0-9]/.test(c) && +c >= absBase) { - if(c === "1" && absBase === 1) continue; - throw new Error(c + " is not a valid digit in base " + base + "."); - } else if(c.charCodeAt(0) - 87 >= absBase) { - throw new Error(c + " is not a valid digit in base " + base + "."); - } - } - } - if (2 <= base && base <= 36) { - if (length <= LOG_MAX_INT / Math.log(base)) { - var result = parseInt(text, base); - if(isNaN(result)) { - throw new Error(c + " is not a valid digit in base " + base + "."); - } - return new SmallInteger(parseInt(text, base)); - } - } - base = parseValue(base); - var digits = []; - var isNegative = text[0] === "-"; - for (i = isNegative ? 1 : 0; i < text.length; i++) { - var c = text[i].toLowerCase(), - charCode = c.charCodeAt(0); - if (48 <= charCode && charCode <= 57) digits.push(parseValue(c)); - else if (97 <= charCode && charCode <= 122) digits.push(parseValue(c.charCodeAt(0) - 87)); - else if (c === "<") { - var start = i; - do { i++; } while (text[i] !== ">"); - digits.push(parseValue(text.slice(start + 1, i))); - } - else throw new Error(c + " is not a valid character"); - } - return parseBaseFromArray(digits, base, isNegative); - }; - - function parseBaseFromArray(digits, base, isNegative) { - var val = Integer[0], pow = Integer[1], i; - for (i = digits.length - 1; i >= 0; i--) { - val = val.add(digits[i].times(pow)); - pow = pow.times(base); - } - return isNegative ? val.negate() : val; - } - - function stringify(digit) { - var v = digit.value; - if (typeof v === "number") v = [v]; - if (v.length === 1 && v[0] <= 35) { - return "0123456789abcdefghijklmnopqrstuvwxyz".charAt(v[0]); - } - return "<" + v + ">"; - } - function toBase(n, base) { - base = bigInt(base); - if (base.isZero()) { - if (n.isZero()) return "0"; - throw new Error("Cannot convert nonzero numbers to base 0."); - } - if (base.equals(-1)) { - if (n.isZero()) return "0"; - if (n.isNegative()) return new Array(1 - n).join("10"); - return "1" + new Array(+n).join("01"); - } - var minusSign = ""; - if (n.isNegative() && base.isPositive()) { - minusSign = "-"; - n = n.abs(); - } - if (base.equals(1)) { - if (n.isZero()) return "0"; - return minusSign + new Array(+n + 1).join(1); - } - var out = []; - var left = n, divmod; - while (left.isNegative() || left.compareAbs(base) >= 0) { - divmod = left.divmod(base); - left = divmod.quotient; - var digit = divmod.remainder; - if (digit.isNegative()) { - digit = base.minus(digit).abs(); - left = left.next(); - } - out.push(stringify(digit)); - } - out.push(stringify(left)); - return minusSign + out.reverse().join(""); - } - - BigInteger.prototype.toString = function (radix) { - if (radix === undefined) radix = 10; - if (radix !== 10) return toBase(this, radix); - var v = this.value, l = v.length, str = String(v[--l]), zeros = "0000000", digit; - while (--l >= 0) { - digit = String(v[l]); - str += zeros.slice(digit.length) + digit; - } - var sign = this.sign ? "-" : ""; - return sign + str; - }; - - SmallInteger.prototype.toString = function (radix) { - if (radix === undefined) radix = 10; - if (radix != 10) return toBase(this, radix); - return String(this.value); - }; - BigInteger.prototype.toJSON = SmallInteger.prototype.toJSON = function() { return this.toString(); } - - BigInteger.prototype.valueOf = function () { - return +this.toString(); - }; - BigInteger.prototype.toJSNumber = BigInteger.prototype.valueOf; - - SmallInteger.prototype.valueOf = function () { - return this.value; - }; - SmallInteger.prototype.toJSNumber = SmallInteger.prototype.valueOf; - - function parseStringValue(v) { - if (isPrecise(+v)) { - var x = +v; - if (x === truncate(x)) - return new SmallInteger(x); - throw "Invalid integer: " + v; - } - var sign = v[0] === "-"; - if (sign) v = v.slice(1); - var split = v.split(/e/i); - if (split.length > 2) throw new Error("Invalid integer: " + split.join("e")); - if (split.length === 2) { - var exp = split[1]; - if (exp[0] === "+") exp = exp.slice(1); - exp = +exp; - if (exp !== truncate(exp) || !isPrecise(exp)) throw new Error("Invalid integer: " + exp + " is not a valid exponent."); - var text = split[0]; - var decimalPlace = text.indexOf("."); - if (decimalPlace >= 0) { - exp -= text.length - decimalPlace - 1; - text = text.slice(0, decimalPlace) + text.slice(decimalPlace + 1); - } - if (exp < 0) throw new Error("Cannot include negative exponent part for integers"); - text += (new Array(exp + 1)).join("0"); - v = text; - } - var isValid = /^([0-9][0-9]*)$/.test(v); - if (!isValid) throw new Error("Invalid integer: " + v); - var r = [], max = v.length, l = LOG_BASE, min = max - l; - while (max > 0) { - r.push(+v.slice(min, max)); - min -= l; - if (min < 0) min = 0; - max -= l; - } - trim(r); - return new BigInteger(r, sign); - } - - function parseNumberValue(v) { - if (isPrecise(v)) { - if (v !== truncate(v)) throw new Error(v + " is not an integer."); - return new SmallInteger(v); - } - return parseStringValue(v.toString()); - } - - function parseValue(v) { - if (typeof v === "number") { - return parseNumberValue(v); - } - if (typeof v === "string") { - return parseStringValue(v); - } - return v; - } - // Pre-define numbers in range [-999,999] - for (var i = 0; i < 1000; i++) { - Integer[i] = new SmallInteger(i); - if (i > 0) Integer[-i] = new SmallInteger(-i); - } - // Backwards compatibility - Integer.one = Integer[1]; - Integer.zero = Integer[0]; - Integer.minusOne = Integer[-1]; - Integer.max = max; - Integer.min = min; - Integer.gcd = gcd; - Integer.lcm = lcm; - Integer.isInstance = function (x) { return x instanceof BigInteger || x instanceof SmallInteger; }; - Integer.randBetween = randBetween; - - Integer.fromArray = function (digits, base, isNegative) { - return parseBaseFromArray(digits.map(parseValue), parseValue(base || 10), isNegative); - }; - - return Integer; -})(); - -// Node.js check -if (typeof module !== "undefined" && module.hasOwnProperty("exports")) { - module.exports = bigInt; -} - -//amd check -if ( typeof define === "function" && define.amd ) { - define( "big-integer", [], function() { - return bigInt; - }); -} - -},{}],4:[function(require,module,exports){ - -},{}],5:[function(require,module,exports){ -var basex = require('base-x') -var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' - -module.exports = basex(ALPHABET) - -},{"base-x":1}],6:[function(require,module,exports){ -'use strict' - -var base58 = require('bs58') -var Buffer = require('safe-buffer').Buffer - -module.exports = function (checksumFn) { - // Encode a buffer as a base58-check encoded string - function encode (payload) { - var checksum = checksumFn(payload) - - return base58.encode(Buffer.concat([ - payload, - checksum - ], payload.length + 4)) - } - - function decodeRaw (buffer) { - var payload = buffer.slice(0, -4) - var checksum = buffer.slice(-4) - var newChecksum = checksumFn(payload) - - if (checksum[0] ^ newChecksum[0] | - checksum[1] ^ newChecksum[1] | - checksum[2] ^ newChecksum[2] | - checksum[3] ^ newChecksum[3]) return - - return payload - } - - // Decode a base58-check encoded string to a buffer, no result if checksum is wrong - function decodeUnsafe (string) { - var buffer = base58.decodeUnsafe(string) - if (!buffer) return - - return decodeRaw(buffer) - } - - function decode (string) { - var buffer = base58.decode(string) - var payload = decodeRaw(buffer, checksumFn) - if (!payload) throw new Error('Invalid checksum') - return payload - } - - return { - encode: encode, - decode: decode, - decodeUnsafe: decodeUnsafe - } -} - -},{"bs58":5,"safe-buffer":40}],7:[function(require,module,exports){ -'use strict' - -var createHash = require('create-hash') -var bs58checkBase = require('./base') - -// SHA256(SHA256(buffer)) -function sha256x2 (buffer) { - var tmp = createHash('sha256').update(buffer).digest() - return createHash('sha256').update(tmp).digest() -} - -module.exports = bs58checkBase(sha256x2) - -},{"./base":6,"create-hash":15}],8:[function(require,module,exports){ -/*! - * The buffer module from node.js, for the browser. - * - * @author Feross Aboukhadijeh - * @license MIT - */ -/* eslint-disable no-proto */ - -'use strict' - -var base64 = require('base64-js') -var ieee754 = require('ieee754') - -exports.Buffer = Buffer -exports.SlowBuffer = SlowBuffer -exports.INSPECT_MAX_BYTES = 50 - -var K_MAX_LENGTH = 0x7fffffff -exports.kMaxLength = K_MAX_LENGTH - -/** - * If `Buffer.TYPED_ARRAY_SUPPORT`: - * === true Use Uint8Array implementation (fastest) - * === false Print warning and recommend using `buffer` v4.x which has an Object - * implementation (most compatible, even IE6) - * - * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, - * Opera 11.6+, iOS 4.2+. - * - * We report that the browser does not support typed arrays if the are not subclassable - * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` - * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support - * for __proto__ and has a buggy typed array implementation. - */ -Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() - -if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && - typeof console.error === 'function') { - console.error( - 'This browser lacks typed array (Uint8Array) support which is required by ' + - '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' - ) -} - -function typedArraySupport () { - // Can typed array instances can be augmented? - try { - var arr = new Uint8Array(1) - arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }} - return arr.foo() === 42 - } catch (e) { - return false - } -} - -function createBuffer (length) { - if (length > K_MAX_LENGTH) { - throw new RangeError('Invalid typed array length') - } - // Return an augmented `Uint8Array` instance - var buf = new Uint8Array(length) - buf.__proto__ = Buffer.prototype - return buf -} - -/** - * The Buffer constructor returns instances of `Uint8Array` that have their - * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of - * `Uint8Array`, so the returned instances will have all the node `Buffer` methods - * and the `Uint8Array` methods. Square bracket notation works as expected -- it - * returns a single octet. - * - * The `Uint8Array` prototype remains unmodified. - */ - -function Buffer (arg, encodingOrOffset, length) { - // Common case. - if (typeof arg === 'number') { - if (typeof encodingOrOffset === 'string') { - throw new Error( - 'If encoding is specified then the first argument must be a string' - ) - } - return allocUnsafe(arg) - } - return from(arg, encodingOrOffset, length) -} - -// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 -if (typeof Symbol !== 'undefined' && Symbol.species && - Buffer[Symbol.species] === Buffer) { - Object.defineProperty(Buffer, Symbol.species, { - value: null, - configurable: true, - enumerable: false, - writable: false - }) -} - -Buffer.poolSize = 8192 // not used by this implementation - -function from (value, encodingOrOffset, length) { - if (typeof value === 'number') { - throw new TypeError('"value" argument must not be a number') - } - - if (isArrayBuffer(value)) { - return fromArrayBuffer(value, encodingOrOffset, length) - } - - if (typeof value === 'string') { - return fromString(value, encodingOrOffset) - } - - return fromObject(value) -} - -/** - * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError - * if value is a number. - * Buffer.from(str[, encoding]) - * Buffer.from(array) - * Buffer.from(buffer) - * Buffer.from(arrayBuffer[, byteOffset[, length]]) - **/ -Buffer.from = function (value, encodingOrOffset, length) { - return from(value, encodingOrOffset, length) -} - -// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: -// https://github.com/feross/buffer/pull/148 -Buffer.prototype.__proto__ = Uint8Array.prototype -Buffer.__proto__ = Uint8Array - -function assertSize (size) { - if (typeof size !== 'number') { - throw new TypeError('"size" argument must be a number') - } else if (size < 0) { - throw new RangeError('"size" argument must not be negative') - } -} - -function alloc (size, fill, encoding) { - assertSize(size) - if (size <= 0) { - return createBuffer(size) - } - if (fill !== undefined) { - // Only pay attention to encoding if it's a string. This - // prevents accidentally sending in a number that would - // be interpretted as a start offset. - return typeof encoding === 'string' - ? createBuffer(size).fill(fill, encoding) - : createBuffer(size).fill(fill) - } - return createBuffer(size) -} - -/** - * Creates a new filled Buffer instance. - * alloc(size[, fill[, encoding]]) - **/ -Buffer.alloc = function (size, fill, encoding) { - return alloc(size, fill, encoding) -} - -function allocUnsafe (size) { - assertSize(size) - return createBuffer(size < 0 ? 0 : checked(size) | 0) -} - -/** - * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. - * */ -Buffer.allocUnsafe = function (size) { - return allocUnsafe(size) -} -/** - * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. - */ -Buffer.allocUnsafeSlow = function (size) { - return allocUnsafe(size) -} - -function fromString (string, encoding) { - if (typeof encoding !== 'string' || encoding === '') { - encoding = 'utf8' - } - - if (!Buffer.isEncoding(encoding)) { - throw new TypeError('"encoding" must be a valid string encoding') - } - - var length = byteLength(string, encoding) | 0 - var buf = createBuffer(length) - - var actual = buf.write(string, encoding) - - if (actual !== length) { - // Writing a hex string, for example, that contains invalid characters will - // cause everything after the first invalid character to be ignored. (e.g. - // 'abxxcd' will be treated as 'ab') - buf = buf.slice(0, actual) - } - - return buf -} - -function fromArrayLike (array) { - var length = array.length < 0 ? 0 : checked(array.length) | 0 - var buf = createBuffer(length) - for (var i = 0; i < length; i += 1) { - buf[i] = array[i] & 255 - } - return buf -} - -function fromArrayBuffer (array, byteOffset, length) { - if (byteOffset < 0 || array.byteLength < byteOffset) { - throw new RangeError('\'offset\' is out of bounds') - } - - if (array.byteLength < byteOffset + (length || 0)) { - throw new RangeError('\'length\' is out of bounds') - } - - var buf - if (byteOffset === undefined && length === undefined) { - buf = new Uint8Array(array) - } else if (length === undefined) { - buf = new Uint8Array(array, byteOffset) - } else { - buf = new Uint8Array(array, byteOffset, length) - } - - // Return an augmented `Uint8Array` instance - buf.__proto__ = Buffer.prototype - return buf -} - -function fromObject (obj) { - if (Buffer.isBuffer(obj)) { - var len = checked(obj.length) | 0 - var buf = createBuffer(len) - - if (buf.length === 0) { - return buf - } - - obj.copy(buf, 0, 0, len) - return buf - } - - if (obj) { - if (isArrayBufferView(obj) || 'length' in obj) { - if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { - return createBuffer(0) - } - return fromArrayLike(obj) - } - - if (obj.type === 'Buffer' && Array.isArray(obj.data)) { - return fromArrayLike(obj.data) - } - } - - throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.') -} - -function checked (length) { - // Note: cannot use `length < K_MAX_LENGTH` here because that fails when - // length is NaN (which is otherwise coerced to zero.) - if (length >= K_MAX_LENGTH) { - throw new RangeError('Attempt to allocate Buffer larger than maximum ' + - 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') - } - return length | 0 -} - -function SlowBuffer (length) { - if (+length != length) { // eslint-disable-line eqeqeq - length = 0 - } - return Buffer.alloc(+length) -} - -Buffer.isBuffer = function isBuffer (b) { - return b != null && b._isBuffer === true -} - -Buffer.compare = function compare (a, b) { - if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { - throw new TypeError('Arguments must be Buffers') - } - - if (a === b) return 0 - - var x = a.length - var y = b.length - - for (var i = 0, len = Math.min(x, y); i < len; ++i) { - if (a[i] !== b[i]) { - x = a[i] - y = b[i] - break - } - } - - if (x < y) return -1 - if (y < x) return 1 - return 0 -} - -Buffer.isEncoding = function isEncoding (encoding) { - switch (String(encoding).toLowerCase()) { - case 'hex': - case 'utf8': - case 'utf-8': - case 'ascii': - case 'latin1': - case 'binary': - case 'base64': - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return true - default: - return false - } -} - -Buffer.concat = function concat (list, length) { - if (!Array.isArray(list)) { - throw new TypeError('"list" argument must be an Array of Buffers') - } - - if (list.length === 0) { - return Buffer.alloc(0) - } - - var i - if (length === undefined) { - length = 0 - for (i = 0; i < list.length; ++i) { - length += list[i].length - } - } - - var buffer = Buffer.allocUnsafe(length) - var pos = 0 - for (i = 0; i < list.length; ++i) { - var buf = list[i] - if (!Buffer.isBuffer(buf)) { - throw new TypeError('"list" argument must be an Array of Buffers') - } - buf.copy(buffer, pos) - pos += buf.length - } - return buffer -} - -function byteLength (string, encoding) { - if (Buffer.isBuffer(string)) { - return string.length - } - if (isArrayBufferView(string) || isArrayBuffer(string)) { - return string.byteLength - } - if (typeof string !== 'string') { - string = '' + string - } - - var len = string.length - if (len === 0) return 0 - - // Use a for loop to avoid recursion - var loweredCase = false - for (;;) { - switch (encoding) { - case 'ascii': - case 'latin1': - case 'binary': - return len - case 'utf8': - case 'utf-8': - case undefined: - return utf8ToBytes(string).length - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return len * 2 - case 'hex': - return len >>> 1 - case 'base64': - return base64ToBytes(string).length - default: - if (loweredCase) return utf8ToBytes(string).length // assume utf8 - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } - } -} -Buffer.byteLength = byteLength - -function slowToString (encoding, start, end) { - var loweredCase = false - - // No need to verify that "this.length <= MAX_UINT32" since it's a read-only - // property of a typed array. - - // This behaves neither like String nor Uint8Array in that we set start/end - // to their upper/lower bounds if the value passed is out of range. - // undefined is handled specially as per ECMA-262 6th Edition, - // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. - if (start === undefined || start < 0) { - start = 0 - } - // Return early if start > this.length. Done here to prevent potential uint32 - // coercion fail below. - if (start > this.length) { - return '' - } - - if (end === undefined || end > this.length) { - end = this.length - } - - if (end <= 0) { - return '' - } - - // Force coersion to uint32. This will also coerce falsey/NaN values to 0. - end >>>= 0 - start >>>= 0 - - if (end <= start) { - return '' - } - - if (!encoding) encoding = 'utf8' - - while (true) { - switch (encoding) { - case 'hex': - return hexSlice(this, start, end) - - case 'utf8': - case 'utf-8': - return utf8Slice(this, start, end) - - case 'ascii': - return asciiSlice(this, start, end) - - case 'latin1': - case 'binary': - return latin1Slice(this, start, end) - - case 'base64': - return base64Slice(this, start, end) - - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return utf16leSlice(this, start, end) - - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = (encoding + '').toLowerCase() - loweredCase = true - } - } -} - -// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) -// to detect a Buffer instance. It's not possible to use `instanceof Buffer` -// reliably in a browserify context because there could be multiple different -// copies of the 'buffer' package in use. This method works even for Buffer -// instances that were created from another copy of the `buffer` package. -// See: https://github.com/feross/buffer/issues/154 -Buffer.prototype._isBuffer = true - -function swap (b, n, m) { - var i = b[n] - b[n] = b[m] - b[m] = i -} - -Buffer.prototype.swap16 = function swap16 () { - var len = this.length - if (len % 2 !== 0) { - throw new RangeError('Buffer size must be a multiple of 16-bits') - } - for (var i = 0; i < len; i += 2) { - swap(this, i, i + 1) - } - return this -} - -Buffer.prototype.swap32 = function swap32 () { - var len = this.length - if (len % 4 !== 0) { - throw new RangeError('Buffer size must be a multiple of 32-bits') - } - for (var i = 0; i < len; i += 4) { - swap(this, i, i + 3) - swap(this, i + 1, i + 2) - } - return this -} - -Buffer.prototype.swap64 = function swap64 () { - var len = this.length - if (len % 8 !== 0) { - throw new RangeError('Buffer size must be a multiple of 64-bits') - } - for (var i = 0; i < len; i += 8) { - swap(this, i, i + 7) - swap(this, i + 1, i + 6) - swap(this, i + 2, i + 5) - swap(this, i + 3, i + 4) - } - return this -} - -Buffer.prototype.toString = function toString () { - var length = this.length - if (length === 0) return '' - if (arguments.length === 0) return utf8Slice(this, 0, length) - return slowToString.apply(this, arguments) -} - -Buffer.prototype.equals = function equals (b) { - if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') - if (this === b) return true - return Buffer.compare(this, b) === 0 -} - -Buffer.prototype.inspect = function inspect () { - var str = '' - var max = exports.INSPECT_MAX_BYTES - if (this.length > 0) { - str = this.toString('hex', 0, max).match(/.{2}/g).join(' ') - if (this.length > max) str += ' ... ' - } - return '' -} - -Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { - if (!Buffer.isBuffer(target)) { - throw new TypeError('Argument must be a Buffer') - } - - if (start === undefined) { - start = 0 - } - if (end === undefined) { - end = target ? target.length : 0 - } - if (thisStart === undefined) { - thisStart = 0 - } - if (thisEnd === undefined) { - thisEnd = this.length - } - - if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { - throw new RangeError('out of range index') - } - - if (thisStart >= thisEnd && start >= end) { - return 0 - } - if (thisStart >= thisEnd) { - return -1 - } - if (start >= end) { - return 1 - } - - start >>>= 0 - end >>>= 0 - thisStart >>>= 0 - thisEnd >>>= 0 - - if (this === target) return 0 - - var x = thisEnd - thisStart - var y = end - start - var len = Math.min(x, y) - - var thisCopy = this.slice(thisStart, thisEnd) - var targetCopy = target.slice(start, end) - - for (var i = 0; i < len; ++i) { - if (thisCopy[i] !== targetCopy[i]) { - x = thisCopy[i] - y = targetCopy[i] - break - } - } - - if (x < y) return -1 - if (y < x) return 1 - return 0 -} - -// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, -// OR the last index of `val` in `buffer` at offset <= `byteOffset`. -// -// Arguments: -// - buffer - a Buffer to search -// - val - a string, Buffer, or number -// - byteOffset - an index into `buffer`; will be clamped to an int32 -// - encoding - an optional encoding, relevant is val is a string -// - dir - true for indexOf, false for lastIndexOf -function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { - // Empty buffer means no match - if (buffer.length === 0) return -1 - - // Normalize byteOffset - if (typeof byteOffset === 'string') { - encoding = byteOffset - byteOffset = 0 - } else if (byteOffset > 0x7fffffff) { - byteOffset = 0x7fffffff - } else if (byteOffset < -0x80000000) { - byteOffset = -0x80000000 - } - byteOffset = +byteOffset // Coerce to Number. - if (numberIsNaN(byteOffset)) { - // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer - byteOffset = dir ? 0 : (buffer.length - 1) - } - - // Normalize byteOffset: negative offsets start from the end of the buffer - if (byteOffset < 0) byteOffset = buffer.length + byteOffset - if (byteOffset >= buffer.length) { - if (dir) return -1 - else byteOffset = buffer.length - 1 - } else if (byteOffset < 0) { - if (dir) byteOffset = 0 - else return -1 - } - - // Normalize val - if (typeof val === 'string') { - val = Buffer.from(val, encoding) - } - - // Finally, search either indexOf (if dir is true) or lastIndexOf - if (Buffer.isBuffer(val)) { - // Special case: looking for empty string/buffer always fails - if (val.length === 0) { - return -1 - } - return arrayIndexOf(buffer, val, byteOffset, encoding, dir) - } else if (typeof val === 'number') { - val = val & 0xFF // Search for a byte value [0-255] - if (typeof Uint8Array.prototype.indexOf === 'function') { - if (dir) { - return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) - } else { - return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) - } - } - return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir) - } - - throw new TypeError('val must be string, number or Buffer') -} - -function arrayIndexOf (arr, val, byteOffset, encoding, dir) { - var indexSize = 1 - var arrLength = arr.length - var valLength = val.length - - if (encoding !== undefined) { - encoding = String(encoding).toLowerCase() - if (encoding === 'ucs2' || encoding === 'ucs-2' || - encoding === 'utf16le' || encoding === 'utf-16le') { - if (arr.length < 2 || val.length < 2) { - return -1 - } - indexSize = 2 - arrLength /= 2 - valLength /= 2 - byteOffset /= 2 - } - } - - function read (buf, i) { - if (indexSize === 1) { - return buf[i] - } else { - return buf.readUInt16BE(i * indexSize) - } - } - - var i - if (dir) { - var foundIndex = -1 - for (i = byteOffset; i < arrLength; i++) { - if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { - if (foundIndex === -1) foundIndex = i - if (i - foundIndex + 1 === valLength) return foundIndex * indexSize - } else { - if (foundIndex !== -1) i -= i - foundIndex - foundIndex = -1 - } - } - } else { - if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength - for (i = byteOffset; i >= 0; i--) { - var found = true - for (var j = 0; j < valLength; j++) { - if (read(arr, i + j) !== read(val, j)) { - found = false - break - } - } - if (found) return i - } - } - - return -1 -} - -Buffer.prototype.includes = function includes (val, byteOffset, encoding) { - return this.indexOf(val, byteOffset, encoding) !== -1 -} - -Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, true) -} - -Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, false) -} - -function hexWrite (buf, string, offset, length) { - offset = Number(offset) || 0 - var remaining = buf.length - offset - if (!length) { - length = remaining - } else { - length = Number(length) - if (length > remaining) { - length = remaining - } - } - - // must be an even number of digits - var strLen = string.length - if (strLen % 2 !== 0) throw new TypeError('Invalid hex string') - - if (length > strLen / 2) { - length = strLen / 2 - } - for (var i = 0; i < length; ++i) { - var parsed = parseInt(string.substr(i * 2, 2), 16) - if (numberIsNaN(parsed)) return i - buf[offset + i] = parsed - } - return i -} - -function utf8Write (buf, string, offset, length) { - return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) -} - -function asciiWrite (buf, string, offset, length) { - return blitBuffer(asciiToBytes(string), buf, offset, length) -} - -function latin1Write (buf, string, offset, length) { - return asciiWrite(buf, string, offset, length) -} - -function base64Write (buf, string, offset, length) { - return blitBuffer(base64ToBytes(string), buf, offset, length) -} - -function ucs2Write (buf, string, offset, length) { - return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) -} - -Buffer.prototype.write = function write (string, offset, length, encoding) { - // Buffer#write(string) - if (offset === undefined) { - encoding = 'utf8' - length = this.length - offset = 0 - // Buffer#write(string, encoding) - } else if (length === undefined && typeof offset === 'string') { - encoding = offset - length = this.length - offset = 0 - // Buffer#write(string, offset[, length][, encoding]) - } else if (isFinite(offset)) { - offset = offset >>> 0 - if (isFinite(length)) { - length = length >>> 0 - if (encoding === undefined) encoding = 'utf8' - } else { - encoding = length - length = undefined - } - } else { - throw new Error( - 'Buffer.write(string, encoding, offset[, length]) is no longer supported' - ) - } - - var remaining = this.length - offset - if (length === undefined || length > remaining) length = remaining - - if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { - throw new RangeError('Attempt to write outside buffer bounds') - } - - if (!encoding) encoding = 'utf8' - - var loweredCase = false - for (;;) { - switch (encoding) { - case 'hex': - return hexWrite(this, string, offset, length) - - case 'utf8': - case 'utf-8': - return utf8Write(this, string, offset, length) - - case 'ascii': - return asciiWrite(this, string, offset, length) - - case 'latin1': - case 'binary': - return latin1Write(this, string, offset, length) - - case 'base64': - // Warning: maxLength not taken into account in base64Write - return base64Write(this, string, offset, length) - - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return ucs2Write(this, string, offset, length) - - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } - } -} - -Buffer.prototype.toJSON = function toJSON () { - return { - type: 'Buffer', - data: Array.prototype.slice.call(this._arr || this, 0) - } -} - -function base64Slice (buf, start, end) { - if (start === 0 && end === buf.length) { - return base64.fromByteArray(buf) - } else { - return base64.fromByteArray(buf.slice(start, end)) - } -} - -function utf8Slice (buf, start, end) { - end = Math.min(buf.length, end) - var res = [] - - var i = start - while (i < end) { - var firstByte = buf[i] - var codePoint = null - var bytesPerSequence = (firstByte > 0xEF) ? 4 - : (firstByte > 0xDF) ? 3 - : (firstByte > 0xBF) ? 2 - : 1 - - if (i + bytesPerSequence <= end) { - var secondByte, thirdByte, fourthByte, tempCodePoint - - switch (bytesPerSequence) { - case 1: - if (firstByte < 0x80) { - codePoint = firstByte - } - break - case 2: - secondByte = buf[i + 1] - if ((secondByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) - if (tempCodePoint > 0x7F) { - codePoint = tempCodePoint - } - } - break - case 3: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) - if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { - codePoint = tempCodePoint - } - } - break - case 4: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - fourthByte = buf[i + 3] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) - if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { - codePoint = tempCodePoint - } - } - } - } - - if (codePoint === null) { - // we did not generate a valid codePoint so insert a - // replacement char (U+FFFD) and advance only 1 byte - codePoint = 0xFFFD - bytesPerSequence = 1 - } else if (codePoint > 0xFFFF) { - // encode to utf16 (surrogate pair dance) - codePoint -= 0x10000 - res.push(codePoint >>> 10 & 0x3FF | 0xD800) - codePoint = 0xDC00 | codePoint & 0x3FF - } - - res.push(codePoint) - i += bytesPerSequence - } - - return decodeCodePointsArray(res) -} - -// Based on http://stackoverflow.com/a/22747272/680742, the browser with -// the lowest limit is Chrome, with 0x10000 args. -// We go 1 magnitude less, for safety -var MAX_ARGUMENTS_LENGTH = 0x1000 - -function decodeCodePointsArray (codePoints) { - var len = codePoints.length - if (len <= MAX_ARGUMENTS_LENGTH) { - return String.fromCharCode.apply(String, codePoints) // avoid extra slice() - } - - // Decode in chunks to avoid "call stack size exceeded". - var res = '' - var i = 0 - while (i < len) { - res += String.fromCharCode.apply( - String, - codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) - ) - } - return res -} - -function asciiSlice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) - - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i] & 0x7F) - } - return ret -} - -function latin1Slice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) - - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i]) - } - return ret -} - -function hexSlice (buf, start, end) { - var len = buf.length - - if (!start || start < 0) start = 0 - if (!end || end < 0 || end > len) end = len - - var out = '' - for (var i = start; i < end; ++i) { - out += toHex(buf[i]) - } - return out -} - -function utf16leSlice (buf, start, end) { - var bytes = buf.slice(start, end) - var res = '' - for (var i = 0; i < bytes.length; i += 2) { - res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) - } - return res -} - -Buffer.prototype.slice = function slice (start, end) { - var len = this.length - start = ~~start - end = end === undefined ? len : ~~end - - if (start < 0) { - start += len - if (start < 0) start = 0 - } else if (start > len) { - start = len - } - - if (end < 0) { - end += len - if (end < 0) end = 0 - } else if (end > len) { - end = len - } - - if (end < start) end = start - - var newBuf = this.subarray(start, end) - // Return an augmented `Uint8Array` instance - newBuf.__proto__ = Buffer.prototype - return newBuf -} - -/* - * Need to make sure that buffer isn't trying to write out of bounds. - */ -function checkOffset (offset, ext, length) { - if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') - if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') -} - -Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) - - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul - } - - return val -} - -Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - checkOffset(offset, byteLength, this.length) - } - - var val = this[offset + --byteLength] - var mul = 1 - while (byteLength > 0 && (mul *= 0x100)) { - val += this[offset + --byteLength] * mul - } - - return val -} - -Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - return this[offset] -} - -Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return this[offset] | (this[offset + 1] << 8) -} - -Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return (this[offset] << 8) | this[offset + 1] -} - -Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return ((this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16)) + - (this[offset + 3] * 0x1000000) -} - -Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return (this[offset] * 0x1000000) + - ((this[offset + 1] << 16) | - (this[offset + 2] << 8) | - this[offset + 3]) -} - -Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) - - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul - } - mul *= 0x80 - - if (val >= mul) val -= Math.pow(2, 8 * byteLength) - - return val -} - -Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) - - var i = byteLength - var mul = 1 - var val = this[offset + --i] - while (i > 0 && (mul *= 0x100)) { - val += this[offset + --i] * mul - } - mul *= 0x80 - - if (val >= mul) val -= Math.pow(2, 8 * byteLength) - - return val -} - -Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - if (!(this[offset] & 0x80)) return (this[offset]) - return ((0xff - this[offset] + 1) * -1) -} - -Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset] | (this[offset + 1] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val -} - -Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset + 1] | (this[offset] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val -} - -Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return (this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16) | - (this[offset + 3] << 24) -} - -Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - - return (this[offset] << 24) | - (this[offset + 1] << 16) | - (this[offset + 2] << 8) | - (this[offset + 3]) -} - -Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, true, 23, 4) -} - -Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, false, 23, 4) -} - -Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, true, 52, 8) -} - -Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, false, 52, 8) -} - -function checkInt (buf, value, offset, ext, max, min) { - if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') - if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') - if (offset + ext > buf.length) throw new RangeError('Index out of range') -} - -Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) - } - - var mul = 1 - var i = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) - } - - var i = byteLength - 1 - var mul = 1 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) - this[offset] = (value & 0xff) - return offset + 1 -} - -Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 -} - -Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 -} - -Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset + 3] = (value >>> 24) - this[offset + 2] = (value >>> 16) - this[offset + 1] = (value >>> 8) - this[offset] = (value & 0xff) - return offset + 4 -} - -Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 -} - -Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) - - checkInt(this, value, offset, byteLength, limit - 1, -limit) - } - - var i = 0 - var mul = 1 - var sub = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { - sub = 1 - } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) - - checkInt(this, value, offset, byteLength, limit - 1, -limit) - } - - var i = byteLength - 1 - var mul = 1 - var sub = 0 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { - sub = 1 - } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF - } - - return offset + byteLength -} - -Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) - if (value < 0) value = 0xff + value + 1 - this[offset] = (value & 0xff) - return offset + 1 -} - -Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 -} - -Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 -} - -Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - this[offset + 2] = (value >>> 16) - this[offset + 3] = (value >>> 24) - return offset + 4 -} - -Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - if (value < 0) value = 0xffffffff + value + 1 - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 -} - -function checkIEEE754 (buf, value, offset, ext, max, min) { - if (offset + ext > buf.length) throw new RangeError('Index out of range') - if (offset < 0) throw new RangeError('Index out of range') -} - -function writeFloat (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) - } - ieee754.write(buf, value, offset, littleEndian, 23, 4) - return offset + 4 -} - -Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { - return writeFloat(this, value, offset, true, noAssert) -} - -Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { - return writeFloat(this, value, offset, false, noAssert) -} - -function writeDouble (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) - } - ieee754.write(buf, value, offset, littleEndian, 52, 8) - return offset + 8 -} - -Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { - return writeDouble(this, value, offset, true, noAssert) -} - -Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { - return writeDouble(this, value, offset, false, noAssert) -} - -// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) -Buffer.prototype.copy = function copy (target, targetStart, start, end) { - if (!start) start = 0 - if (!end && end !== 0) end = this.length - if (targetStart >= target.length) targetStart = target.length - if (!targetStart) targetStart = 0 - if (end > 0 && end < start) end = start - - // Copy 0 bytes; we're done - if (end === start) return 0 - if (target.length === 0 || this.length === 0) return 0 - - // Fatal error conditions - if (targetStart < 0) { - throw new RangeError('targetStart out of bounds') - } - if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds') - if (end < 0) throw new RangeError('sourceEnd out of bounds') - - // Are we oob? - if (end > this.length) end = this.length - if (target.length - targetStart < end - start) { - end = target.length - targetStart + start - } - - var len = end - start - var i - - if (this === target && start < targetStart && targetStart < end) { - // descending copy from end - for (i = len - 1; i >= 0; --i) { - target[i + targetStart] = this[i + start] - } - } else if (len < 1000) { - // ascending copy from start - for (i = 0; i < len; ++i) { - target[i + targetStart] = this[i + start] - } - } else { - Uint8Array.prototype.set.call( - target, - this.subarray(start, start + len), - targetStart - ) - } - - return len -} - -// Usage: -// buffer.fill(number[, offset[, end]]) -// buffer.fill(buffer[, offset[, end]]) -// buffer.fill(string[, offset[, end]][, encoding]) -Buffer.prototype.fill = function fill (val, start, end, encoding) { - // Handle string cases: - if (typeof val === 'string') { - if (typeof start === 'string') { - encoding = start - start = 0 - end = this.length - } else if (typeof end === 'string') { - encoding = end - end = this.length - } - if (val.length === 1) { - var code = val.charCodeAt(0) - if (code < 256) { - val = code - } - } - if (encoding !== undefined && typeof encoding !== 'string') { - throw new TypeError('encoding must be a string') - } - if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { - throw new TypeError('Unknown encoding: ' + encoding) - } - } else if (typeof val === 'number') { - val = val & 255 - } - - // Invalid ranges are not set to a default, so can range check early. - if (start < 0 || this.length < start || this.length < end) { - throw new RangeError('Out of range index') - } - - if (end <= start) { - return this - } - - start = start >>> 0 - end = end === undefined ? this.length : end >>> 0 - - if (!val) val = 0 - - var i - if (typeof val === 'number') { - for (i = start; i < end; ++i) { - this[i] = val - } - } else { - var bytes = Buffer.isBuffer(val) - ? val - : new Buffer(val, encoding) - var len = bytes.length - for (i = 0; i < end - start; ++i) { - this[i + start] = bytes[i % len] - } - } - - return this -} - -// HELPER FUNCTIONS -// ================ - -var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g - -function base64clean (str) { - // Node strips out invalid characters like \n and \t from the string, base64-js does not - str = str.trim().replace(INVALID_BASE64_RE, '') - // Node converts strings with length < 2 to '' - if (str.length < 2) return '' - // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not - while (str.length % 4 !== 0) { - str = str + '=' - } - return str -} - -function toHex (n) { - if (n < 16) return '0' + n.toString(16) - return n.toString(16) -} - -function utf8ToBytes (string, units) { - units = units || Infinity - var codePoint - var length = string.length - var leadSurrogate = null - var bytes = [] - - for (var i = 0; i < length; ++i) { - codePoint = string.charCodeAt(i) - - // is surrogate component - if (codePoint > 0xD7FF && codePoint < 0xE000) { - // last char was a lead - if (!leadSurrogate) { - // no lead yet - if (codePoint > 0xDBFF) { - // unexpected trail - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } else if (i + 1 === length) { - // unpaired lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } - - // valid lead - leadSurrogate = codePoint - - continue - } - - // 2 leads in a row - if (codePoint < 0xDC00) { - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - leadSurrogate = codePoint - continue - } - - // valid surrogate pair - codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 - } else if (leadSurrogate) { - // valid bmp char, but last char was a lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - } - - leadSurrogate = null - - // encode utf8 - if (codePoint < 0x80) { - if ((units -= 1) < 0) break - bytes.push(codePoint) - } else if (codePoint < 0x800) { - if ((units -= 2) < 0) break - bytes.push( - codePoint >> 0x6 | 0xC0, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x10000) { - if ((units -= 3) < 0) break - bytes.push( - codePoint >> 0xC | 0xE0, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x110000) { - if ((units -= 4) < 0) break - bytes.push( - codePoint >> 0x12 | 0xF0, - codePoint >> 0xC & 0x3F | 0x80, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) - } else { - throw new Error('Invalid code point') - } - } - - return bytes -} - -function asciiToBytes (str) { - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - // Node's code seems to be doing this and not & 0x7F.. - byteArray.push(str.charCodeAt(i) & 0xFF) - } - return byteArray -} - -function utf16leToBytes (str, units) { - var c, hi, lo - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - if ((units -= 2) < 0) break - - c = str.charCodeAt(i) - hi = c >> 8 - lo = c % 256 - byteArray.push(lo) - byteArray.push(hi) - } - - return byteArray -} - -function base64ToBytes (str) { - return base64.toByteArray(base64clean(str)) -} - -function blitBuffer (src, dst, offset, length) { - for (var i = 0; i < length; ++i) { - if ((i + offset >= dst.length) || (i >= src.length)) break - dst[i + offset] = src[i] - } - return i -} - -// ArrayBuffers from another context (i.e. an iframe) do not pass the `instanceof` check -// but they should be treated as valid. See: https://github.com/feross/buffer/issues/166 -function isArrayBuffer (obj) { - return obj instanceof ArrayBuffer || - (obj != null && obj.constructor != null && obj.constructor.name === 'ArrayBuffer' && - typeof obj.byteLength === 'number') -} - -// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView` -function isArrayBufferView (obj) { - return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj) -} - -function numberIsNaN (obj) { - return obj !== obj // eslint-disable-line no-self-compare -} - -},{"base64-js":2,"ieee754":20}],9:[function(require,module,exports){ -/** - * @license - * https://github.com/bitcoincashjs/cashaddr - * Copyright (c) 2017-2018 Emilio Almansi - * Distributed under the MIT software license, see the accompanying - * file LICENSE or http://www.opensource.org/licenses/mit-license.php. - */ - -'use strict'; - -var validate = require('./validation').validate; - -/** - * Base32 encoding and decoding. - * - * @module base32 - */ - -/** - * Charset containing the 32 symbols used in the base32 encoding. - * @private - */ -var CHARSET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l'; - -/** - * Inverted index mapping each symbol into its index within the charset. - * @private - */ -var CHARSET_INVERSE_INDEX = { - 'q': 0, 'p': 1, 'z': 2, 'r': 3, 'y': 4, '9': 5, 'x': 6, '8': 7, - 'g': 8, 'f': 9, '2': 10, 't': 11, 'v': 12, 'd': 13, 'w': 14, '0': 15, - 's': 16, '3': 17, 'j': 18, 'n': 19, '5': 20, '4': 21, 'k': 22, 'h': 23, - 'c': 24, 'e': 25, '6': 26, 'm': 27, 'u': 28, 'a': 29, '7': 30, 'l': 31, -}; - -/** - * Encodes the given array of 5-bit integers as a base32-encoded string. - * - * @static - * @param {Uint8Array} data Array of integers between 0 and 31 inclusive. - * @returns {string} - * @throws {ValidationError} - */ -function encode(data) { - validate(data instanceof Uint8Array, 'Invalid data: ' + data + '.'); - var base32 = ''; - for (var i = 0; i < data.length; ++i) { - var value = data[i]; - validate(0 <= value && value < 32, 'Invalid value: ' + value + '.'); - base32 += CHARSET[value]; - } - return base32; -} - -/** - * Decodes the given base32-encoded string into an array of 5-bit integers. - * - * @static - * @param {string} string - * @returns {Uint8Array} - * @throws {ValidationError} - */ -function decode(string) { - validate(typeof string === 'string', 'Invalid base32-encoded string: ' + string + '.'); - var data = new Uint8Array(string.length); - for (var i = 0; i < string.length; ++i) { - var value = string[i]; - validate(value in CHARSET_INVERSE_INDEX, 'Invalid value: ' + value + '.'); - data[i] = CHARSET_INVERSE_INDEX[value]; - } - return data; -} - -module.exports = { - encode: encode, - decode: decode, -}; - -},{"./validation":12}],10:[function(require,module,exports){ -/** - * @license - * https://github.com/bitcoincashjs/cashaddr - * Copyright (c) 2017-2018 Emilio Almansi - * Distributed under the MIT software license, see the accompanying - * file LICENSE or http://www.opensource.org/licenses/mit-license.php. - */ - -'use strict'; - -var base32 = require('./base32'); -var bigInt = require('big-integer'); -var convertBits = require('./convertBits'); -var validation = require('./validation'); -var validate = validation.validate; - -/** - * Encoding and decoding of the new Cash Address format for Bitcoin Cash.
- * Compliant with the original cashaddr specification: - * {@link https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md} - * @module cashaddr - */ - -/** - * Encodes a hash from a given type into a Bitcoin Cash address with the given prefix. - * - * @static - * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. - * @param {string} type Type of address to generate. Either 'P2PKH' or 'P2SH'. - * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers. - * @returns {string} - * @throws {ValidationError} - */ -function encode(prefix, type, hash) { - validate(typeof prefix === 'string' && isValidPrefix(prefix), 'Invalid prefix: ' + prefix + '.'); - validate(typeof type === 'string', 'Invalid type: ' + type + '.'); - validate(hash instanceof Uint8Array, 'Invalid hash: ' + hash + '.'); - var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1)); - var versionByte = getTypeBits(type) + getHashSizeBits(hash); - var payloadData = toUint5Array(concat(Uint8Array.of(versionByte), hash)); - var checksumData = concat(concat(prefixData, payloadData), new Uint8Array(8)); - var payload = concat(payloadData, checksumToUint5Array(polymod(checksumData))); - return prefix + ':' + base32.encode(payload); -} - -/** - * Decodes the given address into its constituting prefix, type and hash. See [#encode()]{@link encode}. - * - * @static - * @param {string} address Address to decode. E.g.: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a'. - * @returns {object} - * @throws {ValidationError} - */ -function decode(address) { - validate(typeof address === 'string' && hasSingleCase(address), 'Invalid address: ' + address + '.'); - var pieces = address.toLowerCase().split(':'); - validate(pieces.length === 2, 'Missing prefix: ' + address + '.'); - var prefix = pieces[0]; - var payload = base32.decode(pieces[1]); - validate(validChecksum(prefix, payload), 'Invalid checksum: ' + address + '.'); - var payloadData = fromUint5Array(payload.slice(0, -8)); - var versionByte = payloadData[0]; - var hash = payloadData.slice(1); - validate(getHashSize(versionByte) === hash.length * 8, 'Invalid hash size: ' + address + '.'); - var type = getType(versionByte); - return { - prefix: prefix, - type: type, - hash: hash, - }; -} - -/** - * Error thrown when encoding or decoding fail due to invalid input. - * - * @constructor ValidationError - * @param {string} message Error description. - */ -var ValidationError = validation.ValidationError; - -/** - * Valid address prefixes. - * - * @private - */ -var VALID_PREFIXES = ['bitcoincash', 'bchtest', 'bchreg', 'simpleledger', 'slptest']; - -/** - * Checks whether a string is a valid prefix; ie., it has a single letter case - * and is one of 'bitcoincash', 'bchtest', or 'bchreg', 'simpleledger' or 'slptest'. - * - * @private - * @param {string} prefix - * @returns {boolean} - */ -function isValidPrefix(prefix) { - return hasSingleCase(prefix) && VALID_PREFIXES.indexOf(prefix.toLowerCase()) !== -1; -} - -/** - * Derives an array from the given prefix to be used in the computation - * of the address' checksum. - * - * @private - * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. - * @returns {Uint8Array} - */ -function prefixToUint5Array(prefix) { - var result = new Uint8Array(prefix.length); - for (var i = 0; i < prefix.length; ++i) { - result[i] = prefix[i].charCodeAt(0) & 31; - } - return result; -} - -/** - * Returns an array representation of the given checksum to be encoded - * within the address' payload. - * - * @private - * @param {BigInteger} checksum Computed checksum. - * @returns {Uint8Array} - */ -function checksumToUint5Array(checksum) { - var result = new Uint8Array(8); - for (var i = 0; i < 8; ++i) { - result[7 - i] = checksum.and(31).toJSNumber(); - checksum = checksum.shiftRight(5); - } - return result; -} - -/** - * Returns the bit representation of the given type within the version - * byte. - * - * @private - * @param {string} type Address type. Either 'P2PKH' or 'P2SH'. - * @returns {number} - * @throws {ValidationError} - */ -function getTypeBits(type) { - switch (type) { - case 'P2PKH': - return 0; - case 'P2SH': - return 8; - default: - throw new ValidationError('Invalid type: ' + type + '.'); - } -} - -/** - * Retrieves the address type from its bit representation within the - * version byte. - * - * @private - * @param {number} versionByte - * @returns {string} - * @throws {ValidationError} - */ -function getType(versionByte) { - switch (versionByte & 120) { - case 0: - return 'P2PKH'; - case 8: - return 'P2SH'; - default: - throw new ValidationError('Invalid address type in version byte: ' + versionByte + '.'); - } -} - -/** - * Returns the bit representation of the length in bits of the given - * hash within the version byte. - * - * @private - * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers. - * @returns {number} - * @throws {ValidationError} - */ -function getHashSizeBits(hash) { - switch (hash.length * 8) { - case 160: - return 0; - case 192: - return 1; - case 224: - return 2; - case 256: - return 3; - case 320: - return 4; - case 384: - return 5; - case 448: - return 6; - case 512: - return 7; - default: - throw new ValidationError('Invalid hash size: ' + hash.length + '.'); - } -} - -/** - * Retrieves the the length in bits of the encoded hash from its bit - * representation within the version byte. - * - * @private - * @param {number} versionByte - * @returns {number} - */ -function getHashSize(versionByte) { - switch (versionByte & 7) { - case 0: - return 160; - case 1: - return 192; - case 2: - return 224; - case 3: - return 256; - case 4: - return 320; - case 5: - return 384; - case 6: - return 448; - case 7: - return 512; - } -} - -/** - * Converts an array of 8-bit integers into an array of 5-bit integers, - * right-padding with zeroes if necessary. - * - * @private - * @param {Uint8Array} data - * @returns {Uint8Array} - */ -function toUint5Array(data) { - return convertBits(data, 8, 5); -} - -/** - * Converts an array of 5-bit integers back into an array of 8-bit integers, - * removing extra zeroes left from padding if necessary. - * Throws a {@link ValidationError} if input is not a zero-padded array of 8-bit integers. - * - * @private - * @param {Uint8Array} data - * @returns {Uint8Array} - * @throws {ValidationError} - */ -function fromUint5Array(data) { - return convertBits(data, 5, 8, true); -} - -/** - * Returns the concatenation a and b. - * - * @private - * @param {Uint8Array} a - * @param {Uint8Array} b - * @returns {Uint8Array} - * @throws {ValidationError} - */ -function concat(a, b) { - var ab = new Uint8Array(a.length + b.length); - ab.set(a); - ab.set(b, a.length); - return ab; -} - -/** - * Computes a checksum from the given input data as specified for the CashAddr - * format: https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md. - * - * @private - * @param {Uint8Array} data Array of 5-bit integers over which the checksum is to be computed. - * @returns {BigInteger} - */ -function polymod(data) { - var GENERATOR = [0x98f2bc8e61, 0x79b76d99e2, 0xf33e5fb3c4, 0xae2eabe2a8, 0x1e4f43e470]; - var checksum = bigInt(1); - for (var i = 0; i < data.length; ++i) { - var value = data[i]; - var topBits = checksum.shiftRight(35); - checksum = checksum.and(0x07ffffffff).shiftLeft(5).xor(value); - for (var j = 0; j < GENERATOR.length; ++j) { - if (topBits.shiftRight(j).and(1).equals(1)) { - checksum = checksum.xor(GENERATOR[j]); - } - } - } - return checksum.xor(1); -} - -/** - * Verify that the payload has not been corrupted by checking that the - * checksum is valid. - * - * @private - * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. - * @param {Uint8Array} payload Array of 5-bit integers containing the address' payload. - * @returns {boolean} - */ -function validChecksum(prefix, payload) { - var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1)); - var checksumData = concat(prefixData, payload); - return polymod(checksumData).equals(0); -} - -/** - * Returns true if, and only if, the given string contains either uppercase - * or lowercase letters, but not both. - * - * @private - * @param {string} string Input string. - * @returns {boolean} - */ -function hasSingleCase(string) { - return string === string.toLowerCase() || string === string.toUpperCase(); -} - -module.exports = { - encode: encode, - decode: decode, - ValidationError: ValidationError, -}; - -},{"./base32":9,"./convertBits":11,"./validation":12,"big-integer":3}],11:[function(require,module,exports){ -// Copyright (c) 2017-2018 Emilio Almansi -// Copyright (c) 2017 Pieter Wuille -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -'use strict'; - -var validate = require('./validation').validate; - -/** - * Converts an array of integers made up of 'from' bits into an - * array of integers made up of 'to' bits. The output array is - * zero-padded if necessary, unless strict mode is true. - * Throws a {@link ValidationError} if input is invalid. - * Original by Pieter Wuille: https://github.com/sipa/bech32. - * - * @param {Uint8Array} data Array of integers made up of 'from' bits. - * @param {number} from Length in bits of elements in the input array. - * @param {number} to Length in bits of elements in the output array. - * @param {bool} strictMode Require the conversion to be completed without padding. - * @returns {Uint8Array} - */ -module.exports = function(data, from, to, strictMode) { - var length = strictMode - ? Math.floor(data.length * from / to) - : Math.ceil(data.length * from / to); - var mask = (1 << to) - 1; - var result = new Uint8Array(length); - var index = 0; - var accumulator = 0; - var bits = 0; - for (var i = 0; i < data.length; ++i) { - var value = data[i]; - validate(0 <= value && (value >> from) === 0, 'Invalid value: ' + value + '.'); - accumulator = (accumulator << from) | value; - bits += from; - while (bits >= to) { - bits -= to; - result[index] = (accumulator >> bits) & mask; - ++index; - } - } - if (!strictMode) { - if (bits > 0) { - result[index] = (accumulator << (to - bits)) & mask; - ++index; - } - } else { - validate( - bits < from && ((accumulator << (to - bits)) & mask) === 0, - 'Input cannot be converted to ' + to + ' bits without padding, but strict mode was used.' - ); - } - return result; -}; - -},{"./validation":12}],12:[function(require,module,exports){ -/** - * @license - * https://github.com/bitcoincashjs/cashaddr - * Copyright (c) 2017-2018 Emilio Almansi - * Distributed under the MIT software license, see the accompanying - * file LICENSE or http://www.opensource.org/licenses/mit-license.php. - */ - -'use strict'; - -/** - * Validation utility. - * - * @module validation - */ - -/** - * Error thrown when encoding or decoding fail due to invalid input. - * - * @constructor ValidationError - * @param {string} message Error description. - */ -function ValidationError(message) { - var error = new Error(); - this.name = error.name = 'ValidationError'; - this.message = error.message = message; - this.stack = error.stack; -} - -ValidationError.prototype = Object.create(Error.prototype); - -/** - * Validates a given condition, throwing a {@link ValidationError} if - * the given condition does not hold. - * - * @static - * @param {boolean} condition Condition to validate. - * @param {string} message Error message in case the condition does not hold. - */ -function validate(condition, message) { - if (!condition) { - throw new ValidationError(message); - } -} - -module.exports = { - ValidationError: ValidationError, - validate: validate, -}; - -},{}],13:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var Transform = require('stream').Transform -var StringDecoder = require('string_decoder').StringDecoder -var inherits = require('inherits') - -function CipherBase (hashMode) { - Transform.call(this) - this.hashMode = typeof hashMode === 'string' - if (this.hashMode) { - this[hashMode] = this._finalOrDigest - } else { - this.final = this._finalOrDigest - } - if (this._final) { - this.__final = this._final - this._final = null - } - this._decoder = null - this._encoding = null -} -inherits(CipherBase, Transform) - -CipherBase.prototype.update = function (data, inputEnc, outputEnc) { - if (typeof data === 'string') { - data = Buffer.from(data, inputEnc) - } - - var outData = this._update(data) - if (this.hashMode) return this - - if (outputEnc) { - outData = this._toString(outData, outputEnc) - } - - return outData -} - -CipherBase.prototype.setAutoPadding = function () {} -CipherBase.prototype.getAuthTag = function () { - throw new Error('trying to get auth tag in unsupported state') -} - -CipherBase.prototype.setAuthTag = function () { - throw new Error('trying to set auth tag in unsupported state') -} - -CipherBase.prototype.setAAD = function () { - throw new Error('trying to set aad in unsupported state') -} - -CipherBase.prototype._transform = function (data, _, next) { - var err - try { - if (this.hashMode) { - this._update(data) - } else { - this.push(this._update(data)) - } - } catch (e) { - err = e - } finally { - next(err) - } -} -CipherBase.prototype._flush = function (done) { - var err - try { - this.push(this.__final()) - } catch (e) { - err = e - } - - done(err) -} -CipherBase.prototype._finalOrDigest = function (outputEnc) { - var outData = this.__final() || Buffer.alloc(0) - if (outputEnc) { - outData = this._toString(outData, outputEnc, true) - } - return outData -} - -CipherBase.prototype._toString = function (value, enc, fin) { - if (!this._decoder) { - this._decoder = new StringDecoder(enc) - this._encoding = enc - } - - if (this._encoding !== enc) throw new Error('can\'t switch encodings') - - var out = this._decoder.write(value) - if (fin) { - out += this._decoder.end() - } - - return out -} - -module.exports = CipherBase - -},{"inherits":21,"safe-buffer":40,"stream":49,"string_decoder":50}],14:[function(require,module,exports){ -(function (Buffer){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// NOTE: These type checking functions intentionally don't use `instanceof` -// because it is fragile and can be easily faked with `Object.create()`. - -function isArray(arg) { - if (Array.isArray) { - return Array.isArray(arg); - } - return objectToString(arg) === '[object Array]'; -} -exports.isArray = isArray; - -function isBoolean(arg) { - return typeof arg === 'boolean'; -} -exports.isBoolean = isBoolean; - -function isNull(arg) { - return arg === null; -} -exports.isNull = isNull; - -function isNullOrUndefined(arg) { - return arg == null; -} -exports.isNullOrUndefined = isNullOrUndefined; - -function isNumber(arg) { - return typeof arg === 'number'; -} -exports.isNumber = isNumber; - -function isString(arg) { - return typeof arg === 'string'; -} -exports.isString = isString; - -function isSymbol(arg) { - return typeof arg === 'symbol'; -} -exports.isSymbol = isSymbol; - -function isUndefined(arg) { - return arg === void 0; -} -exports.isUndefined = isUndefined; - -function isRegExp(re) { - return objectToString(re) === '[object RegExp]'; -} -exports.isRegExp = isRegExp; - -function isObject(arg) { - return typeof arg === 'object' && arg !== null; -} -exports.isObject = isObject; - -function isDate(d) { - return objectToString(d) === '[object Date]'; -} -exports.isDate = isDate; - -function isError(e) { - return (objectToString(e) === '[object Error]' || e instanceof Error); -} -exports.isError = isError; - -function isFunction(arg) { - return typeof arg === 'function'; -} -exports.isFunction = isFunction; - -function isPrimitive(arg) { - return arg === null || - typeof arg === 'boolean' || - typeof arg === 'number' || - typeof arg === 'string' || - typeof arg === 'symbol' || // ES6 symbol - typeof arg === 'undefined'; -} -exports.isPrimitive = isPrimitive; - -exports.isBuffer = Buffer.isBuffer; - -function objectToString(o) { - return Object.prototype.toString.call(o); -} - -}).call(this,{"isBuffer":require("../../is-buffer/index.js")}) -},{"../../is-buffer/index.js":22}],15:[function(require,module,exports){ -(function (Buffer){ -'use strict' -var inherits = require('inherits') -var md5 = require('./md5') -var RIPEMD160 = require('ripemd160') -var sha = require('sha.js') - -var Base = require('cipher-base') - -function HashNoConstructor (hash) { - Base.call(this, 'digest') - - this._hash = hash - this.buffers = [] -} - -inherits(HashNoConstructor, Base) - -HashNoConstructor.prototype._update = function (data) { - this.buffers.push(data) -} - -HashNoConstructor.prototype._final = function () { - var buf = Buffer.concat(this.buffers) - var r = this._hash(buf) - this.buffers = null - - return r -} - -function Hash (hash) { - Base.call(this, 'digest') - - this._hash = hash -} - -inherits(Hash, Base) - -Hash.prototype._update = function (data) { - this._hash.update(data) -} - -Hash.prototype._final = function () { - return this._hash.digest() -} - -module.exports = function createHash (alg) { - alg = alg.toLowerCase() - if (alg === 'md5') return new HashNoConstructor(md5) - if (alg === 'rmd160' || alg === 'ripemd160') return new Hash(new RIPEMD160()) - - return new Hash(sha(alg)) -} - -}).call(this,require("buffer").Buffer) -},{"./md5":17,"buffer":8,"cipher-base":13,"inherits":21,"ripemd160":39,"sha.js":42}],16:[function(require,module,exports){ -(function (Buffer){ -'use strict' -var intSize = 4 -var zeroBuffer = new Buffer(intSize) -zeroBuffer.fill(0) - -var charSize = 8 -var hashSize = 16 - -function toArray (buf) { - if ((buf.length % intSize) !== 0) { - var len = buf.length + (intSize - (buf.length % intSize)) - buf = Buffer.concat([buf, zeroBuffer], len) - } - - var arr = new Array(buf.length >>> 2) - for (var i = 0, j = 0; i < buf.length; i += intSize, j++) { - arr[j] = buf.readInt32LE(i) - } - - return arr -} - -module.exports = function hash (buf, fn) { - var arr = fn(toArray(buf), buf.length * charSize) - buf = new Buffer(hashSize) - for (var i = 0; i < arr.length; i++) { - buf.writeInt32LE(arr[i], i << 2, true) - } - return buf -} - -}).call(this,require("buffer").Buffer) -},{"buffer":8}],17:[function(require,module,exports){ -'use strict' -/* - * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message - * Digest Algorithm, as defined in RFC 1321. - * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002. - * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet - * Distributed under the BSD License - * See http://pajhome.org.uk/crypt/md5 for more info. - */ - -var makeHash = require('./make-hash') - -/* - * Calculate the MD5 of an array of little-endian words, and a bit length - */ -function core_md5 (x, len) { - /* append padding */ - x[len >> 5] |= 0x80 << ((len) % 32) - x[(((len + 64) >>> 9) << 4) + 14] = len - - var a = 1732584193 - var b = -271733879 - var c = -1732584194 - var d = 271733878 - - for (var i = 0; i < x.length; i += 16) { - var olda = a - var oldb = b - var oldc = c - var oldd = d - - a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936) - d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586) - c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819) - b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330) - a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897) - d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426) - c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341) - b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983) - a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416) - d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417) - c = md5_ff(c, d, a, b, x[i + 10], 17, -42063) - b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162) - a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682) - d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101) - c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290) - b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329) - - a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510) - d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632) - c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713) - b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302) - a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691) - d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083) - c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335) - b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848) - a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438) - d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690) - c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961) - b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501) - a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467) - d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784) - c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473) - b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734) - - a = md5_hh(a, b, c, d, x[i + 5], 4, -378558) - d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463) - c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562) - b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556) - a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060) - d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353) - c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632) - b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640) - a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174) - d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222) - c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979) - b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189) - a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487) - d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835) - c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520) - b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651) - - a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844) - d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415) - c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905) - b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055) - a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571) - d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606) - c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523) - b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799) - a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359) - d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744) - c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380) - b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649) - a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070) - d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379) - c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259) - b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551) - - a = safe_add(a, olda) - b = safe_add(b, oldb) - c = safe_add(c, oldc) - d = safe_add(d, oldd) - } - - return [a, b, c, d] -} - -/* - * These functions implement the four basic operations the algorithm uses. - */ -function md5_cmn (q, a, b, x, s, t) { - return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b) -} - -function md5_ff (a, b, c, d, x, s, t) { - return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t) -} - -function md5_gg (a, b, c, d, x, s, t) { - return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t) -} - -function md5_hh (a, b, c, d, x, s, t) { - return md5_cmn(b ^ c ^ d, a, b, x, s, t) -} - -function md5_ii (a, b, c, d, x, s, t) { - return md5_cmn(c ^ (b | (~d)), a, b, x, s, t) -} - -/* - * Add integers, wrapping at 2^32. This uses 16-bit operations internally - * to work around bugs in some JS interpreters. - */ -function safe_add (x, y) { - var lsw = (x & 0xFFFF) + (y & 0xFFFF) - var msw = (x >> 16) + (y >> 16) + (lsw >> 16) - return (msw << 16) | (lsw & 0xFFFF) -} - -/* - * Bitwise rotate a 32-bit number to the left. - */ -function bit_rol (num, cnt) { - return (num << cnt) | (num >>> (32 - cnt)) -} - -module.exports = function md5 (buf) { - return makeHash(buf, core_md5) -} - -},{"./make-hash":16}],18:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -function EventEmitter() { - this._events = this._events || {}; - this._maxListeners = this._maxListeners || undefined; -} -module.exports = EventEmitter; - -// Backwards-compat with node 0.10.x -EventEmitter.EventEmitter = EventEmitter; - -EventEmitter.prototype._events = undefined; -EventEmitter.prototype._maxListeners = undefined; - -// By default EventEmitters will print a warning if more than 10 listeners are -// added to it. This is a useful default which helps finding memory leaks. -EventEmitter.defaultMaxListeners = 10; - -// Obviously not all Emitters should be limited to 10. This function allows -// that to be increased. Set to zero for unlimited. -EventEmitter.prototype.setMaxListeners = function(n) { - if (!isNumber(n) || n < 0 || isNaN(n)) - throw TypeError('n must be a positive number'); - this._maxListeners = n; - return this; -}; - -EventEmitter.prototype.emit = function(type) { - var er, handler, len, args, i, listeners; - - if (!this._events) - this._events = {}; - - // If there is no 'error' event listener then throw. - if (type === 'error') { - if (!this._events.error || - (isObject(this._events.error) && !this._events.error.length)) { - er = arguments[1]; - if (er instanceof Error) { - throw er; // Unhandled 'error' event - } else { - // At least give some kind of context to the user - var err = new Error('Uncaught, unspecified "error" event. (' + er + ')'); - err.context = er; - throw err; - } - } - } - - handler = this._events[type]; - - if (isUndefined(handler)) - return false; - - if (isFunction(handler)) { - switch (arguments.length) { - // fast cases - case 1: - handler.call(this); - break; - case 2: - handler.call(this, arguments[1]); - break; - case 3: - handler.call(this, arguments[1], arguments[2]); - break; - // slower - default: - args = Array.prototype.slice.call(arguments, 1); - handler.apply(this, args); - } - } else if (isObject(handler)) { - args = Array.prototype.slice.call(arguments, 1); - listeners = handler.slice(); - len = listeners.length; - for (i = 0; i < len; i++) - listeners[i].apply(this, args); - } - - return true; -}; - -EventEmitter.prototype.addListener = function(type, listener) { - var m; - - if (!isFunction(listener)) - throw TypeError('listener must be a function'); - - if (!this._events) - this._events = {}; - - // To avoid recursion in the case that type === "newListener"! Before - // adding it to the listeners, first emit "newListener". - if (this._events.newListener) - this.emit('newListener', type, - isFunction(listener.listener) ? - listener.listener : listener); - - if (!this._events[type]) - // Optimize the case of one listener. Don't need the extra array object. - this._events[type] = listener; - else if (isObject(this._events[type])) - // If we've already got an array, just append. - this._events[type].push(listener); - else - // Adding the second element, need to change to array. - this._events[type] = [this._events[type], listener]; - - // Check for listener leak - if (isObject(this._events[type]) && !this._events[type].warned) { - if (!isUndefined(this._maxListeners)) { - m = this._maxListeners; - } else { - m = EventEmitter.defaultMaxListeners; - } - - if (m && m > 0 && this._events[type].length > m) { - this._events[type].warned = true; - console.error('(node) warning: possible EventEmitter memory ' + - 'leak detected. %d listeners added. ' + - 'Use emitter.setMaxListeners() to increase limit.', - this._events[type].length); - if (typeof console.trace === 'function') { - // not supported in IE 10 - console.trace(); - } - } - } - - return this; -}; - -EventEmitter.prototype.on = EventEmitter.prototype.addListener; - -EventEmitter.prototype.once = function(type, listener) { - if (!isFunction(listener)) - throw TypeError('listener must be a function'); - - var fired = false; - - function g() { - this.removeListener(type, g); - - if (!fired) { - fired = true; - listener.apply(this, arguments); - } - } - - g.listener = listener; - this.on(type, g); - - return this; -}; - -// emits a 'removeListener' event iff the listener was removed -EventEmitter.prototype.removeListener = function(type, listener) { - var list, position, length, i; - - if (!isFunction(listener)) - throw TypeError('listener must be a function'); - - if (!this._events || !this._events[type]) - return this; - - list = this._events[type]; - length = list.length; - position = -1; - - if (list === listener || - (isFunction(list.listener) && list.listener === listener)) { - delete this._events[type]; - if (this._events.removeListener) - this.emit('removeListener', type, listener); - - } else if (isObject(list)) { - for (i = length; i-- > 0;) { - if (list[i] === listener || - (list[i].listener && list[i].listener === listener)) { - position = i; - break; - } - } - - if (position < 0) - return this; - - if (list.length === 1) { - list.length = 0; - delete this._events[type]; - } else { - list.splice(position, 1); - } - - if (this._events.removeListener) - this.emit('removeListener', type, listener); - } - - return this; -}; - -EventEmitter.prototype.removeAllListeners = function(type) { - var key, listeners; - - if (!this._events) - return this; - - // not listening for removeListener, no need to emit - if (!this._events.removeListener) { - if (arguments.length === 0) - this._events = {}; - else if (this._events[type]) - delete this._events[type]; - return this; - } - - // emit removeListener for all listeners on all events - if (arguments.length === 0) { - for (key in this._events) { - if (key === 'removeListener') continue; - this.removeAllListeners(key); - } - this.removeAllListeners('removeListener'); - this._events = {}; - return this; - } - - listeners = this._events[type]; - - if (isFunction(listeners)) { - this.removeListener(type, listeners); - } else if (listeners) { - // LIFO order - while (listeners.length) - this.removeListener(type, listeners[listeners.length - 1]); - } - delete this._events[type]; - - return this; -}; - -EventEmitter.prototype.listeners = function(type) { - var ret; - if (!this._events || !this._events[type]) - ret = []; - else if (isFunction(this._events[type])) - ret = [this._events[type]]; - else - ret = this._events[type].slice(); - return ret; -}; - -EventEmitter.prototype.listenerCount = function(type) { - if (this._events) { - var evlistener = this._events[type]; - - if (isFunction(evlistener)) - return 1; - else if (evlistener) - return evlistener.length; - } - return 0; -}; - -EventEmitter.listenerCount = function(emitter, type) { - return emitter.listenerCount(type); -}; - -function isFunction(arg) { - return typeof arg === 'function'; -} - -function isNumber(arg) { - return typeof arg === 'number'; -} - -function isObject(arg) { - return typeof arg === 'object' && arg !== null; -} - -function isUndefined(arg) { - return arg === void 0; -} - -},{}],19:[function(require,module,exports){ -(function (Buffer){ -'use strict' -var Transform = require('stream').Transform -var inherits = require('inherits') - -function HashBase (blockSize) { - Transform.call(this) - - this._block = new Buffer(blockSize) - this._blockSize = blockSize - this._blockOffset = 0 - this._length = [0, 0, 0, 0] - - this._finalized = false -} - -inherits(HashBase, Transform) - -HashBase.prototype._transform = function (chunk, encoding, callback) { - var error = null - try { - if (encoding !== 'buffer') chunk = new Buffer(chunk, encoding) - this.update(chunk) - } catch (err) { - error = err - } - - callback(error) -} - -HashBase.prototype._flush = function (callback) { - var error = null - try { - this.push(this._digest()) - } catch (err) { - error = err - } - - callback(error) -} - -HashBase.prototype.update = function (data, encoding) { - if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer') - if (this._finalized) throw new Error('Digest already called') - if (!Buffer.isBuffer(data)) data = new Buffer(data, encoding || 'binary') - - // consume data - var block = this._block - var offset = 0 - while (this._blockOffset + data.length - offset >= this._blockSize) { - for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++] - this._update() - this._blockOffset = 0 - } - while (offset < data.length) block[this._blockOffset++] = data[offset++] - - // update length - for (var j = 0, carry = data.length * 8; carry > 0; ++j) { - this._length[j] += carry - carry = (this._length[j] / 0x0100000000) | 0 - if (carry > 0) this._length[j] -= 0x0100000000 * carry - } - - return this -} - -HashBase.prototype._update = function (data) { - throw new Error('_update is not implemented') -} - -HashBase.prototype.digest = function (encoding) { - if (this._finalized) throw new Error('Digest already called') - this._finalized = true - - var digest = this._digest() - if (encoding !== undefined) digest = digest.toString(encoding) - return digest -} - -HashBase.prototype._digest = function () { - throw new Error('_digest is not implemented') -} - -module.exports = HashBase - -}).call(this,require("buffer").Buffer) -},{"buffer":8,"inherits":21,"stream":49}],20:[function(require,module,exports){ -exports.read = function (buffer, offset, isLE, mLen, nBytes) { - var e, m - var eLen = nBytes * 8 - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var nBits = -7 - var i = isLE ? (nBytes - 1) : 0 - var d = isLE ? -1 : 1 - var s = buffer[offset + i] - - i += d - - e = s & ((1 << (-nBits)) - 1) - s >>= (-nBits) - nBits += eLen - for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {} - - m = e & ((1 << (-nBits)) - 1) - e >>= (-nBits) - nBits += mLen - for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {} - - if (e === 0) { - e = 1 - eBias - } else if (e === eMax) { - return m ? NaN : ((s ? -1 : 1) * Infinity) - } else { - m = m + Math.pow(2, mLen) - e = e - eBias - } - return (s ? -1 : 1) * m * Math.pow(2, e - mLen) -} - -exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { - var e, m, c - var eLen = nBytes * 8 - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) - var i = isLE ? 0 : (nBytes - 1) - var d = isLE ? 1 : -1 - var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 - - value = Math.abs(value) - - if (isNaN(value) || value === Infinity) { - m = isNaN(value) ? 1 : 0 - e = eMax - } else { - e = Math.floor(Math.log(value) / Math.LN2) - if (value * (c = Math.pow(2, -e)) < 1) { - e-- - c *= 2 - } - if (e + eBias >= 1) { - value += rt / c - } else { - value += rt * Math.pow(2, 1 - eBias) - } - if (value * c >= 2) { - e++ - c /= 2 - } - - if (e + eBias >= eMax) { - m = 0 - e = eMax - } else if (e + eBias >= 1) { - m = (value * c - 1) * Math.pow(2, mLen) - e = e + eBias - } else { - m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) - e = 0 - } - } - - for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} - - e = (e << mLen) | m - eLen += mLen - for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} - - buffer[offset + i - d] |= s * 128 -} - -},{}],21:[function(require,module,exports){ -if (typeof Object.create === 'function') { - // implementation from standard node.js 'util' module - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - ctor.prototype = Object.create(superCtor.prototype, { - constructor: { - value: ctor, - enumerable: false, - writable: true, - configurable: true - } - }); - }; -} else { - // old school shim for old browsers - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - var TempCtor = function () {} - TempCtor.prototype = superCtor.prototype - ctor.prototype = new TempCtor() - ctor.prototype.constructor = ctor - } -} - -},{}],22:[function(require,module,exports){ -/*! - * Determine if an object is a Buffer - * - * @author Feross Aboukhadijeh - * @license MIT - */ - -// The _isBuffer check is for Safari 5-7 support, because it's missing -// Object.prototype.constructor. Remove this eventually -module.exports = function (obj) { - return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer) -} - -function isBuffer (obj) { - return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) -} - -// For Node v0.10 support. Remove this eventually. -function isSlowBuffer (obj) { - return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0)) -} - -},{}],23:[function(require,module,exports){ -var toString = {}.toString; - -module.exports = Array.isArray || function (arr) { - return toString.call(arr) == '[object Array]'; -}; - -},{}],24:[function(require,module,exports){ -(function (process){ -'use strict'; - -if (!process.version || - process.version.indexOf('v0.') === 0 || - process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) { - module.exports = nextTick; -} else { - module.exports = process.nextTick; -} - -function nextTick(fn, arg1, arg2, arg3) { - if (typeof fn !== 'function') { - throw new TypeError('"callback" argument must be a function'); - } - var len = arguments.length; - var args, i; - switch (len) { - case 0: - case 1: - return process.nextTick(fn); - case 2: - return process.nextTick(function afterTickOne() { - fn.call(null, arg1); - }); - case 3: - return process.nextTick(function afterTickTwo() { - fn.call(null, arg1, arg2); - }); - case 4: - return process.nextTick(function afterTickThree() { - fn.call(null, arg1, arg2, arg3); - }); - default: - args = new Array(len - 1); - i = 0; - while (i < args.length) { - args[i++] = arguments[i]; - } - return process.nextTick(function afterTick() { - fn.apply(null, args); - }); - } -} - -}).call(this,require('_process')) -},{"_process":25}],25:[function(require,module,exports){ -// shim for using process in browser -var process = module.exports = {}; - -// cached from whatever global is present so that test runners that stub it -// don't break things. But we need to wrap it in a try catch in case it is -// wrapped in strict mode code which doesn't define any globals. It's inside a -// function because try/catches deoptimize in certain engines. - -var cachedSetTimeout; -var cachedClearTimeout; - -function defaultSetTimout() { - throw new Error('setTimeout has not been defined'); -} -function defaultClearTimeout () { - throw new Error('clearTimeout has not been defined'); -} -(function () { - try { - if (typeof setTimeout === 'function') { - cachedSetTimeout = setTimeout; - } else { - cachedSetTimeout = defaultSetTimout; - } - } catch (e) { - cachedSetTimeout = defaultSetTimout; - } - try { - if (typeof clearTimeout === 'function') { - cachedClearTimeout = clearTimeout; - } else { - cachedClearTimeout = defaultClearTimeout; - } - } catch (e) { - cachedClearTimeout = defaultClearTimeout; - } -} ()) -function runTimeout(fun) { - if (cachedSetTimeout === setTimeout) { - //normal enviroments in sane situations - return setTimeout(fun, 0); - } - // if setTimeout wasn't available but was latter defined - if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) { - cachedSetTimeout = setTimeout; - return setTimeout(fun, 0); - } - try { - // when when somebody has screwed with setTimeout but no I.E. maddness - return cachedSetTimeout(fun, 0); - } catch(e){ - try { - // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally - return cachedSetTimeout.call(null, fun, 0); - } catch(e){ - // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error - return cachedSetTimeout.call(this, fun, 0); - } - } - - -} -function runClearTimeout(marker) { - if (cachedClearTimeout === clearTimeout) { - //normal enviroments in sane situations - return clearTimeout(marker); - } - // if clearTimeout wasn't available but was latter defined - if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) { - cachedClearTimeout = clearTimeout; - return clearTimeout(marker); - } - try { - // when when somebody has screwed with setTimeout but no I.E. maddness - return cachedClearTimeout(marker); - } catch (e){ - try { - // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally - return cachedClearTimeout.call(null, marker); - } catch (e){ - // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error. - // Some versions of I.E. have different rules for clearTimeout vs setTimeout - return cachedClearTimeout.call(this, marker); - } - } - - - -} -var queue = []; -var draining = false; -var currentQueue; -var queueIndex = -1; - -function cleanUpNextTick() { - if (!draining || !currentQueue) { - return; - } - draining = false; - if (currentQueue.length) { - queue = currentQueue.concat(queue); - } else { - queueIndex = -1; - } - if (queue.length) { - drainQueue(); - } -} - -function drainQueue() { - if (draining) { - return; - } - var timeout = runTimeout(cleanUpNextTick); - draining = true; - - var len = queue.length; - while(len) { - currentQueue = queue; - queue = []; - while (++queueIndex < len) { - if (currentQueue) { - currentQueue[queueIndex].run(); - } - } - queueIndex = -1; - len = queue.length; - } - currentQueue = null; - draining = false; - runClearTimeout(timeout); -} - -process.nextTick = function (fun) { - var args = new Array(arguments.length - 1); - if (arguments.length > 1) { - for (var i = 1; i < arguments.length; i++) { - args[i - 1] = arguments[i]; - } - } - queue.push(new Item(fun, args)); - if (queue.length === 1 && !draining) { - runTimeout(drainQueue); - } -}; - -// v8 likes predictible objects -function Item(fun, array) { - this.fun = fun; - this.array = array; -} -Item.prototype.run = function () { - this.fun.apply(null, this.array); -}; -process.title = 'browser'; -process.browser = true; -process.env = {}; -process.argv = []; -process.version = ''; // empty string to avoid regexp issues -process.versions = {}; - -function noop() {} - -process.on = noop; -process.addListener = noop; -process.once = noop; -process.off = noop; -process.removeListener = noop; -process.removeAllListeners = noop; -process.emit = noop; -process.prependListener = noop; -process.prependOnceListener = noop; - -process.listeners = function (name) { return [] } - -process.binding = function (name) { - throw new Error('process.binding is not supported'); -}; - -process.cwd = function () { return '/' }; -process.chdir = function (dir) { - throw new Error('process.chdir is not supported'); -}; -process.umask = function() { return 0; }; - -},{}],26:[function(require,module,exports){ -module.exports = require('./lib/_stream_duplex.js'); - -},{"./lib/_stream_duplex.js":27}],27:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// a duplex stream is just a stream that is both readable and writable. -// Since JS doesn't have multiple prototypal inheritance, this class -// prototypally inherits from Readable, and then parasitically from -// Writable. - -'use strict'; - -/**/ - -var processNextTick = require('process-nextick-args'); -/**/ - -/**/ -var objectKeys = Object.keys || function (obj) { - var keys = []; - for (var key in obj) { - keys.push(key); - }return keys; -}; -/**/ - -module.exports = Duplex; - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -var Readable = require('./_stream_readable'); -var Writable = require('./_stream_writable'); - -util.inherits(Duplex, Readable); - -var keys = objectKeys(Writable.prototype); -for (var v = 0; v < keys.length; v++) { - var method = keys[v]; - if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method]; -} - -function Duplex(options) { - if (!(this instanceof Duplex)) return new Duplex(options); - - Readable.call(this, options); - Writable.call(this, options); - - if (options && options.readable === false) this.readable = false; - - if (options && options.writable === false) this.writable = false; - - this.allowHalfOpen = true; - if (options && options.allowHalfOpen === false) this.allowHalfOpen = false; - - this.once('end', onend); -} - -// the no-half-open enforcer -function onend() { - // if we allow half-open state, or if the writable side ended, - // then we're ok. - if (this.allowHalfOpen || this._writableState.ended) return; - - // no more data can be written. - // But allow more writes to happen in this tick. - processNextTick(onEndNT, this); -} - -function onEndNT(self) { - self.end(); -} - -Object.defineProperty(Duplex.prototype, 'destroyed', { - get: function () { - if (this._readableState === undefined || this._writableState === undefined) { - return false; - } - return this._readableState.destroyed && this._writableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (this._readableState === undefined || this._writableState === undefined) { - return; - } - - // backward compatibility, the user is explicitly - // managing destroyed - this._readableState.destroyed = value; - this._writableState.destroyed = value; - } -}); - -Duplex.prototype._destroy = function (err, cb) { - this.push(null); - this.end(); - - processNextTick(cb, err); -}; - -function forEach(xs, f) { - for (var i = 0, l = xs.length; i < l; i++) { - f(xs[i], i); - } -} -},{"./_stream_readable":29,"./_stream_writable":31,"core-util-is":14,"inherits":21,"process-nextick-args":24}],28:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// a passthrough stream. -// basically just the most minimal sort of Transform stream. -// Every written chunk gets output as-is. - -'use strict'; - -module.exports = PassThrough; - -var Transform = require('./_stream_transform'); - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -util.inherits(PassThrough, Transform); - -function PassThrough(options) { - if (!(this instanceof PassThrough)) return new PassThrough(options); - - Transform.call(this, options); -} - -PassThrough.prototype._transform = function (chunk, encoding, cb) { - cb(null, chunk); -}; -},{"./_stream_transform":30,"core-util-is":14,"inherits":21}],29:[function(require,module,exports){ -(function (process,global){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -'use strict'; - -/**/ - -var processNextTick = require('process-nextick-args'); -/**/ - -module.exports = Readable; - -/**/ -var isArray = require('isarray'); -/**/ - -/**/ -var Duplex; -/**/ - -Readable.ReadableState = ReadableState; - -/**/ -var EE = require('events').EventEmitter; - -var EElistenerCount = function (emitter, type) { - return emitter.listeners(type).length; -}; -/**/ - -/**/ -var Stream = require('./internal/streams/stream'); -/**/ - -// TODO(bmeurer): Change this back to const once hole checks are -// properly optimized away early in Ignition+TurboFan. -/**/ -var Buffer = require('safe-buffer').Buffer; -var OurUint8Array = global.Uint8Array || function () {}; -function _uint8ArrayToBuffer(chunk) { - return Buffer.from(chunk); -} -function _isUint8Array(obj) { - return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; -} -/**/ - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -/**/ -var debugUtil = require('util'); -var debug = void 0; -if (debugUtil && debugUtil.debuglog) { - debug = debugUtil.debuglog('stream'); -} else { - debug = function () {}; -} -/**/ - -var BufferList = require('./internal/streams/BufferList'); -var destroyImpl = require('./internal/streams/destroy'); -var StringDecoder; - -util.inherits(Readable, Stream); - -var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume']; - -function prependListener(emitter, event, fn) { - // Sadly this is not cacheable as some libraries bundle their own - // event emitter implementation with them. - if (typeof emitter.prependListener === 'function') { - return emitter.prependListener(event, fn); - } else { - // This is a hack to make sure that our error handler is attached before any - // userland ones. NEVER DO THIS. This is here only because this code needs - // to continue to work with older versions of Node.js that do not include - // the prependListener() method. The goal is to eventually remove this hack. - if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]]; - } -} - -function ReadableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); - - options = options || {}; - - // object stream flag. Used to make read(n) ignore n and to - // make all the buffer merging and length checks go away - this.objectMode = !!options.objectMode; - - if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode; - - // the point at which it stops calling _read() to fill the buffer - // Note: 0 is a valid value, means "don't call _read preemptively ever" - var hwm = options.highWaterMark; - var defaultHwm = this.objectMode ? 16 : 16 * 1024; - this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm; - - // cast to ints. - this.highWaterMark = Math.floor(this.highWaterMark); - - // A linked list is used to store data chunks instead of an array because the - // linked list can remove elements from the beginning faster than - // array.shift() - this.buffer = new BufferList(); - this.length = 0; - this.pipes = null; - this.pipesCount = 0; - this.flowing = null; - this.ended = false; - this.endEmitted = false; - this.reading = false; - - // a flag to be able to tell if the event 'readable'/'data' is emitted - // immediately, or on a later tick. We set this to true at first, because - // any actions that shouldn't happen until "later" should generally also - // not happen before the first read call. - this.sync = true; - - // whenever we return null, then we set a flag to say - // that we're awaiting a 'readable' event emission. - this.needReadable = false; - this.emittedReadable = false; - this.readableListening = false; - this.resumeScheduled = false; - - // has it been destroyed - this.destroyed = false; - - // Crypto is kind of old and crusty. Historically, its default string - // encoding is 'binary' so we have to make this configurable. - // Everything else in the universe uses 'utf8', though. - this.defaultEncoding = options.defaultEncoding || 'utf8'; - - // the number of writers that are awaiting a drain event in .pipe()s - this.awaitDrain = 0; - - // if true, a maybeReadMore has been scheduled - this.readingMore = false; - - this.decoder = null; - this.encoding = null; - if (options.encoding) { - if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; - this.decoder = new StringDecoder(options.encoding); - this.encoding = options.encoding; - } -} - -function Readable(options) { - Duplex = Duplex || require('./_stream_duplex'); - - if (!(this instanceof Readable)) return new Readable(options); - - this._readableState = new ReadableState(options, this); - - // legacy - this.readable = true; - - if (options) { - if (typeof options.read === 'function') this._read = options.read; - - if (typeof options.destroy === 'function') this._destroy = options.destroy; - } - - Stream.call(this); -} - -Object.defineProperty(Readable.prototype, 'destroyed', { - get: function () { - if (this._readableState === undefined) { - return false; - } - return this._readableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (!this._readableState) { - return; - } - - // backward compatibility, the user is explicitly - // managing destroyed - this._readableState.destroyed = value; - } -}); - -Readable.prototype.destroy = destroyImpl.destroy; -Readable.prototype._undestroy = destroyImpl.undestroy; -Readable.prototype._destroy = function (err, cb) { - this.push(null); - cb(err); -}; - -// Manually shove something into the read() buffer. -// This returns true if the highWaterMark has not been hit yet, -// similar to how Writable.write() returns true if you should -// write() some more. -Readable.prototype.push = function (chunk, encoding) { - var state = this._readableState; - var skipChunkCheck; - - if (!state.objectMode) { - if (typeof chunk === 'string') { - encoding = encoding || state.defaultEncoding; - if (encoding !== state.encoding) { - chunk = Buffer.from(chunk, encoding); - encoding = ''; - } - skipChunkCheck = true; - } - } else { - skipChunkCheck = true; - } - - return readableAddChunk(this, chunk, encoding, false, skipChunkCheck); -}; - -// Unshift should *always* be something directly out of read() -Readable.prototype.unshift = function (chunk) { - return readableAddChunk(this, chunk, null, true, false); -}; - -function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) { - var state = stream._readableState; - if (chunk === null) { - state.reading = false; - onEofChunk(stream, state); - } else { - var er; - if (!skipChunkCheck) er = chunkInvalid(state, chunk); - if (er) { - stream.emit('error', er); - } else if (state.objectMode || chunk && chunk.length > 0) { - if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) { - chunk = _uint8ArrayToBuffer(chunk); - } - - if (addToFront) { - if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true); - } else if (state.ended) { - stream.emit('error', new Error('stream.push() after EOF')); - } else { - state.reading = false; - if (state.decoder && !encoding) { - chunk = state.decoder.write(chunk); - if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state); - } else { - addChunk(stream, state, chunk, false); - } - } - } else if (!addToFront) { - state.reading = false; - } - } - - return needMoreData(state); -} - -function addChunk(stream, state, chunk, addToFront) { - if (state.flowing && state.length === 0 && !state.sync) { - stream.emit('data', chunk); - stream.read(0); - } else { - // update the buffer info. - state.length += state.objectMode ? 1 : chunk.length; - if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk); - - if (state.needReadable) emitReadable(stream); - } - maybeReadMore(stream, state); -} - -function chunkInvalid(state, chunk) { - var er; - if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { - er = new TypeError('Invalid non-string/buffer chunk'); - } - return er; -} - -// if it's past the high water mark, we can push in some more. -// Also, if we have no data yet, we can stand some -// more bytes. This is to work around cases where hwm=0, -// such as the repl. Also, if the push() triggered a -// readable event, and the user called read(largeNumber) such that -// needReadable was set, then we ought to push more, so that another -// 'readable' event will be triggered. -function needMoreData(state) { - return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0); -} - -Readable.prototype.isPaused = function () { - return this._readableState.flowing === false; -}; - -// backwards compatibility. -Readable.prototype.setEncoding = function (enc) { - if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; - this._readableState.decoder = new StringDecoder(enc); - this._readableState.encoding = enc; - return this; -}; - -// Don't raise the hwm > 8MB -var MAX_HWM = 0x800000; -function computeNewHighWaterMark(n) { - if (n >= MAX_HWM) { - n = MAX_HWM; - } else { - // Get the next highest power of 2 to prevent increasing hwm excessively in - // tiny amounts - n--; - n |= n >>> 1; - n |= n >>> 2; - n |= n >>> 4; - n |= n >>> 8; - n |= n >>> 16; - n++; - } - return n; -} - -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function howMuchToRead(n, state) { - if (n <= 0 || state.length === 0 && state.ended) return 0; - if (state.objectMode) return 1; - if (n !== n) { - // Only flow one buffer at a time - if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length; - } - // If we're asking for more than the current hwm, then raise the hwm. - if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n); - if (n <= state.length) return n; - // Don't have enough - if (!state.ended) { - state.needReadable = true; - return 0; - } - return state.length; -} - -// you can override either this method, or the async _read(n) below. -Readable.prototype.read = function (n) { - debug('read', n); - n = parseInt(n, 10); - var state = this._readableState; - var nOrig = n; - - if (n !== 0) state.emittedReadable = false; - - // if we're doing read(0) to trigger a readable event, but we - // already have a bunch of data in the buffer, then just trigger - // the 'readable' event and move on. - if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) { - debug('read: emitReadable', state.length, state.ended); - if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this); - return null; - } - - n = howMuchToRead(n, state); - - // if we've ended, and we're now clear, then finish it up. - if (n === 0 && state.ended) { - if (state.length === 0) endReadable(this); - return null; - } - - // All the actual chunk generation logic needs to be - // *below* the call to _read. The reason is that in certain - // synthetic stream cases, such as passthrough streams, _read - // may be a completely synchronous operation which may change - // the state of the read buffer, providing enough data when - // before there was *not* enough. - // - // So, the steps are: - // 1. Figure out what the state of things will be after we do - // a read from the buffer. - // - // 2. If that resulting state will trigger a _read, then call _read. - // Note that this may be asynchronous, or synchronous. Yes, it is - // deeply ugly to write APIs this way, but that still doesn't mean - // that the Readable class should behave improperly, as streams are - // designed to be sync/async agnostic. - // Take note if the _read call is sync or async (ie, if the read call - // has returned yet), so that we know whether or not it's safe to emit - // 'readable' etc. - // - // 3. Actually pull the requested chunks out of the buffer and return. - - // if we need a readable event, then we need to do some reading. - var doRead = state.needReadable; - debug('need readable', doRead); - - // if we currently have less than the highWaterMark, then also read some - if (state.length === 0 || state.length - n < state.highWaterMark) { - doRead = true; - debug('length less than watermark', doRead); - } - - // however, if we've ended, then there's no point, and if we're already - // reading, then it's unnecessary. - if (state.ended || state.reading) { - doRead = false; - debug('reading or ended', doRead); - } else if (doRead) { - debug('do read'); - state.reading = true; - state.sync = true; - // if the length is currently zero, then we *need* a readable event. - if (state.length === 0) state.needReadable = true; - // call internal read method - this._read(state.highWaterMark); - state.sync = false; - // If _read pushed data synchronously, then `reading` will be false, - // and we need to re-evaluate how much data we can return to the user. - if (!state.reading) n = howMuchToRead(nOrig, state); - } - - var ret; - if (n > 0) ret = fromList(n, state);else ret = null; - - if (ret === null) { - state.needReadable = true; - n = 0; - } else { - state.length -= n; - } - - if (state.length === 0) { - // If we have nothing in the buffer, then we want to know - // as soon as we *do* get something into the buffer. - if (!state.ended) state.needReadable = true; - - // If we tried to read() past the EOF, then emit end on the next tick. - if (nOrig !== n && state.ended) endReadable(this); - } - - if (ret !== null) this.emit('data', ret); - - return ret; -}; - -function onEofChunk(stream, state) { - if (state.ended) return; - if (state.decoder) { - var chunk = state.decoder.end(); - if (chunk && chunk.length) { - state.buffer.push(chunk); - state.length += state.objectMode ? 1 : chunk.length; - } - } - state.ended = true; - - // emit 'readable' now to make sure it gets picked up. - emitReadable(stream); -} - -// Don't emit readable right away in sync mode, because this can trigger -// another read() call => stack overflow. This way, it might trigger -// a nextTick recursion warning, but that's not so bad. -function emitReadable(stream) { - var state = stream._readableState; - state.needReadable = false; - if (!state.emittedReadable) { - debug('emitReadable', state.flowing); - state.emittedReadable = true; - if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream); - } -} - -function emitReadable_(stream) { - debug('emit readable'); - stream.emit('readable'); - flow(stream); -} - -// at this point, the user has presumably seen the 'readable' event, -// and called read() to consume some data. that may have triggered -// in turn another _read(n) call, in which case reading = true if -// it's in progress. -// However, if we're not ended, or reading, and the length < hwm, -// then go ahead and try to read some more preemptively. -function maybeReadMore(stream, state) { - if (!state.readingMore) { - state.readingMore = true; - processNextTick(maybeReadMore_, stream, state); - } -} - -function maybeReadMore_(stream, state) { - var len = state.length; - while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) { - debug('maybeReadMore read 0'); - stream.read(0); - if (len === state.length) - // didn't get any data, stop spinning. - break;else len = state.length; - } - state.readingMore = false; -} - -// abstract method. to be overridden in specific implementation classes. -// call cb(er, data) where data is <= n in length. -// for virtual (non-string, non-buffer) streams, "length" is somewhat -// arbitrary, and perhaps not very meaningful. -Readable.prototype._read = function (n) { - this.emit('error', new Error('_read() is not implemented')); -}; - -Readable.prototype.pipe = function (dest, pipeOpts) { - var src = this; - var state = this._readableState; - - switch (state.pipesCount) { - case 0: - state.pipes = dest; - break; - case 1: - state.pipes = [state.pipes, dest]; - break; - default: - state.pipes.push(dest); - break; - } - state.pipesCount += 1; - debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts); - - var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr; - - var endFn = doEnd ? onend : unpipe; - if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn); - - dest.on('unpipe', onunpipe); - function onunpipe(readable, unpipeInfo) { - debug('onunpipe'); - if (readable === src) { - if (unpipeInfo && unpipeInfo.hasUnpiped === false) { - unpipeInfo.hasUnpiped = true; - cleanup(); - } - } - } - - function onend() { - debug('onend'); - dest.end(); - } - - // when the dest drains, it reduces the awaitDrain counter - // on the source. This would be more elegant with a .once() - // handler in flow(), but adding and removing repeatedly is - // too slow. - var ondrain = pipeOnDrain(src); - dest.on('drain', ondrain); - - var cleanedUp = false; - function cleanup() { - debug('cleanup'); - // cleanup event handlers once the pipe is broken - dest.removeListener('close', onclose); - dest.removeListener('finish', onfinish); - dest.removeListener('drain', ondrain); - dest.removeListener('error', onerror); - dest.removeListener('unpipe', onunpipe); - src.removeListener('end', onend); - src.removeListener('end', unpipe); - src.removeListener('data', ondata); - - cleanedUp = true; - - // if the reader is waiting for a drain event from this - // specific writer, then it would cause it to never start - // flowing again. - // So, if this is awaiting a drain, then we just call it now. - // If we don't know, then assume that we are waiting for one. - if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain(); - } - - // If the user pushes more data while we're writing to dest then we'll end up - // in ondata again. However, we only want to increase awaitDrain once because - // dest will only emit one 'drain' event for the multiple writes. - // => Introduce a guard on increasing awaitDrain. - var increasedAwaitDrain = false; - src.on('data', ondata); - function ondata(chunk) { - debug('ondata'); - increasedAwaitDrain = false; - var ret = dest.write(chunk); - if (false === ret && !increasedAwaitDrain) { - // If the user unpiped during `dest.write()`, it is possible - // to get stuck in a permanently paused state if that write - // also returned false. - // => Check whether `dest` is still a piping destination. - if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) { - debug('false write response, pause', src._readableState.awaitDrain); - src._readableState.awaitDrain++; - increasedAwaitDrain = true; - } - src.pause(); - } - } - - // if the dest has an error, then stop piping into it. - // however, don't suppress the throwing behavior for this. - function onerror(er) { - debug('onerror', er); - unpipe(); - dest.removeListener('error', onerror); - if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er); - } - - // Make sure our error handler is attached before userland ones. - prependListener(dest, 'error', onerror); - - // Both close and finish should trigger unpipe, but only once. - function onclose() { - dest.removeListener('finish', onfinish); - unpipe(); - } - dest.once('close', onclose); - function onfinish() { - debug('onfinish'); - dest.removeListener('close', onclose); - unpipe(); - } - dest.once('finish', onfinish); - - function unpipe() { - debug('unpipe'); - src.unpipe(dest); - } - - // tell the dest that it's being piped to - dest.emit('pipe', src); - - // start the flow if it hasn't been started already. - if (!state.flowing) { - debug('pipe resume'); - src.resume(); - } - - return dest; -}; - -function pipeOnDrain(src) { - return function () { - var state = src._readableState; - debug('pipeOnDrain', state.awaitDrain); - if (state.awaitDrain) state.awaitDrain--; - if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) { - state.flowing = true; - flow(src); - } - }; -} - -Readable.prototype.unpipe = function (dest) { - var state = this._readableState; - var unpipeInfo = { hasUnpiped: false }; - - // if we're not piping anywhere, then do nothing. - if (state.pipesCount === 0) return this; - - // just one destination. most common case. - if (state.pipesCount === 1) { - // passed in one, but it's not the right one. - if (dest && dest !== state.pipes) return this; - - if (!dest) dest = state.pipes; - - // got a match. - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; - if (dest) dest.emit('unpipe', this, unpipeInfo); - return this; - } - - // slow case. multiple pipe destinations. - - if (!dest) { - // remove all. - var dests = state.pipes; - var len = state.pipesCount; - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; - - for (var i = 0; i < len; i++) { - dests[i].emit('unpipe', this, unpipeInfo); - }return this; - } - - // try to find the right one. - var index = indexOf(state.pipes, dest); - if (index === -1) return this; - - state.pipes.splice(index, 1); - state.pipesCount -= 1; - if (state.pipesCount === 1) state.pipes = state.pipes[0]; - - dest.emit('unpipe', this, unpipeInfo); - - return this; -}; - -// set up data events if they are asked for -// Ensure readable listeners eventually get something -Readable.prototype.on = function (ev, fn) { - var res = Stream.prototype.on.call(this, ev, fn); - - if (ev === 'data') { - // Start flowing on next tick if stream isn't explicitly paused - if (this._readableState.flowing !== false) this.resume(); - } else if (ev === 'readable') { - var state = this._readableState; - if (!state.endEmitted && !state.readableListening) { - state.readableListening = state.needReadable = true; - state.emittedReadable = false; - if (!state.reading) { - processNextTick(nReadingNextTick, this); - } else if (state.length) { - emitReadable(this); - } - } - } - - return res; -}; -Readable.prototype.addListener = Readable.prototype.on; - -function nReadingNextTick(self) { - debug('readable nexttick read 0'); - self.read(0); -} - -// pause() and resume() are remnants of the legacy readable stream API -// If the user uses them, then switch into old mode. -Readable.prototype.resume = function () { - var state = this._readableState; - if (!state.flowing) { - debug('resume'); - state.flowing = true; - resume(this, state); - } - return this; -}; - -function resume(stream, state) { - if (!state.resumeScheduled) { - state.resumeScheduled = true; - processNextTick(resume_, stream, state); - } -} - -function resume_(stream, state) { - if (!state.reading) { - debug('resume read 0'); - stream.read(0); - } - - state.resumeScheduled = false; - state.awaitDrain = 0; - stream.emit('resume'); - flow(stream); - if (state.flowing && !state.reading) stream.read(0); -} - -Readable.prototype.pause = function () { - debug('call pause flowing=%j', this._readableState.flowing); - if (false !== this._readableState.flowing) { - debug('pause'); - this._readableState.flowing = false; - this.emit('pause'); - } - return this; -}; - -function flow(stream) { - var state = stream._readableState; - debug('flow', state.flowing); - while (state.flowing && stream.read() !== null) {} -} - -// wrap an old-style stream as the async data source. -// This is *not* part of the readable stream interface. -// It is an ugly unfortunate mess of history. -Readable.prototype.wrap = function (stream) { - var state = this._readableState; - var paused = false; - - var self = this; - stream.on('end', function () { - debug('wrapped end'); - if (state.decoder && !state.ended) { - var chunk = state.decoder.end(); - if (chunk && chunk.length) self.push(chunk); - } - - self.push(null); - }); - - stream.on('data', function (chunk) { - debug('wrapped data'); - if (state.decoder) chunk = state.decoder.write(chunk); - - // don't skip over falsy values in objectMode - if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return; - - var ret = self.push(chunk); - if (!ret) { - paused = true; - stream.pause(); - } - }); - - // proxy all the other methods. - // important when wrapping filters and duplexes. - for (var i in stream) { - if (this[i] === undefined && typeof stream[i] === 'function') { - this[i] = function (method) { - return function () { - return stream[method].apply(stream, arguments); - }; - }(i); - } - } - - // proxy certain important events. - for (var n = 0; n < kProxyEvents.length; n++) { - stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n])); - } - - // when we try to consume some more bytes, simply unpause the - // underlying stream. - self._read = function (n) { - debug('wrapped _read', n); - if (paused) { - paused = false; - stream.resume(); - } - }; - - return self; -}; - -// exposed for testing purposes only. -Readable._fromList = fromList; - -// Pluck off n bytes from an array of buffers. -// Length is the combined lengths of all the buffers in the list. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function fromList(n, state) { - // nothing buffered - if (state.length === 0) return null; - - var ret; - if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) { - // read it all, truncate the list - if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length); - state.buffer.clear(); - } else { - // read part of list - ret = fromListPartial(n, state.buffer, state.decoder); - } - - return ret; -} - -// Extracts only enough buffered data to satisfy the amount requested. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function fromListPartial(n, list, hasStrings) { - var ret; - if (n < list.head.data.length) { - // slice is the same for buffers and strings - ret = list.head.data.slice(0, n); - list.head.data = list.head.data.slice(n); - } else if (n === list.head.data.length) { - // first chunk is a perfect match - ret = list.shift(); - } else { - // result spans more than one buffer - ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list); - } - return ret; -} - -// Copies a specified amount of characters from the list of buffered data -// chunks. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function copyFromBufferString(n, list) { - var p = list.head; - var c = 1; - var ret = p.data; - n -= ret.length; - while (p = p.next) { - var str = p.data; - var nb = n > str.length ? str.length : n; - if (nb === str.length) ret += str;else ret += str.slice(0, n); - n -= nb; - if (n === 0) { - if (nb === str.length) { - ++c; - if (p.next) list.head = p.next;else list.head = list.tail = null; - } else { - list.head = p; - p.data = str.slice(nb); - } - break; - } - ++c; - } - list.length -= c; - return ret; -} - -// Copies a specified amount of bytes from the list of buffered data chunks. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function copyFromBuffer(n, list) { - var ret = Buffer.allocUnsafe(n); - var p = list.head; - var c = 1; - p.data.copy(ret); - n -= p.data.length; - while (p = p.next) { - var buf = p.data; - var nb = n > buf.length ? buf.length : n; - buf.copy(ret, ret.length - n, 0, nb); - n -= nb; - if (n === 0) { - if (nb === buf.length) { - ++c; - if (p.next) list.head = p.next;else list.head = list.tail = null; - } else { - list.head = p; - p.data = buf.slice(nb); - } - break; - } - ++c; - } - list.length -= c; - return ret; -} - -function endReadable(stream) { - var state = stream._readableState; - - // If we get here before consuming all the bytes, then that is a - // bug in node. Should never happen. - if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream'); - - if (!state.endEmitted) { - state.ended = true; - processNextTick(endReadableNT, state, stream); - } -} - -function endReadableNT(state, stream) { - // Check that we didn't get one last unshift. - if (!state.endEmitted && state.length === 0) { - state.endEmitted = true; - stream.readable = false; - stream.emit('end'); - } -} - -function forEach(xs, f) { - for (var i = 0, l = xs.length; i < l; i++) { - f(xs[i], i); - } -} - -function indexOf(xs, x) { - for (var i = 0, l = xs.length; i < l; i++) { - if (xs[i] === x) return i; - } - return -1; -} -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./_stream_duplex":27,"./internal/streams/BufferList":32,"./internal/streams/destroy":33,"./internal/streams/stream":34,"_process":25,"core-util-is":14,"events":18,"inherits":21,"isarray":23,"process-nextick-args":24,"safe-buffer":40,"string_decoder/":50,"util":4}],30:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// a transform stream is a readable/writable stream where you do -// something with the data. Sometimes it's called a "filter", -// but that's not a great name for it, since that implies a thing where -// some bits pass through, and others are simply ignored. (That would -// be a valid example of a transform, of course.) -// -// While the output is causally related to the input, it's not a -// necessarily symmetric or synchronous transformation. For example, -// a zlib stream might take multiple plain-text writes(), and then -// emit a single compressed chunk some time in the future. -// -// Here's how this works: -// -// The Transform stream has all the aspects of the readable and writable -// stream classes. When you write(chunk), that calls _write(chunk,cb) -// internally, and returns false if there's a lot of pending writes -// buffered up. When you call read(), that calls _read(n) until -// there's enough pending readable data buffered up. -// -// In a transform stream, the written data is placed in a buffer. When -// _read(n) is called, it transforms the queued up data, calling the -// buffered _write cb's as it consumes chunks. If consuming a single -// written chunk would result in multiple output chunks, then the first -// outputted bit calls the readcb, and subsequent chunks just go into -// the read buffer, and will cause it to emit 'readable' if necessary. -// -// This way, back-pressure is actually determined by the reading side, -// since _read has to be called to start processing a new chunk. However, -// a pathological inflate type of transform can cause excessive buffering -// here. For example, imagine a stream where every byte of input is -// interpreted as an integer from 0-255, and then results in that many -// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in -// 1kb of data being output. In this case, you could write a very small -// amount of input, and end up with a very large amount of output. In -// such a pathological inflating mechanism, there'd be no way to tell -// the system to stop doing the transform. A single 4MB write could -// cause the system to run out of memory. -// -// However, even in such a pathological case, only a single written chunk -// would be consumed, and then the rest would wait (un-transformed) until -// the results of the previous transformed chunk were consumed. - -'use strict'; - -module.exports = Transform; - -var Duplex = require('./_stream_duplex'); - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -util.inherits(Transform, Duplex); - -function TransformState(stream) { - this.afterTransform = function (er, data) { - return afterTransform(stream, er, data); - }; - - this.needTransform = false; - this.transforming = false; - this.writecb = null; - this.writechunk = null; - this.writeencoding = null; -} - -function afterTransform(stream, er, data) { - var ts = stream._transformState; - ts.transforming = false; - - var cb = ts.writecb; - - if (!cb) { - return stream.emit('error', new Error('write callback called multiple times')); - } - - ts.writechunk = null; - ts.writecb = null; - - if (data !== null && data !== undefined) stream.push(data); - - cb(er); - - var rs = stream._readableState; - rs.reading = false; - if (rs.needReadable || rs.length < rs.highWaterMark) { - stream._read(rs.highWaterMark); - } -} - -function Transform(options) { - if (!(this instanceof Transform)) return new Transform(options); - - Duplex.call(this, options); - - this._transformState = new TransformState(this); - - var stream = this; - - // start out asking for a readable event once data is transformed. - this._readableState.needReadable = true; - - // we have implemented the _read method, and done the other things - // that Readable wants before the first _read call, so unset the - // sync guard flag. - this._readableState.sync = false; - - if (options) { - if (typeof options.transform === 'function') this._transform = options.transform; - - if (typeof options.flush === 'function') this._flush = options.flush; - } - - // When the writable side finishes, then flush out anything remaining. - this.once('prefinish', function () { - if (typeof this._flush === 'function') this._flush(function (er, data) { - done(stream, er, data); - });else done(stream); - }); -} - -Transform.prototype.push = function (chunk, encoding) { - this._transformState.needTransform = false; - return Duplex.prototype.push.call(this, chunk, encoding); -}; - -// This is the part where you do stuff! -// override this function in implementation classes. -// 'chunk' is an input chunk. -// -// Call `push(newChunk)` to pass along transformed output -// to the readable side. You may call 'push' zero or more times. -// -// Call `cb(err)` when you are done with this chunk. If you pass -// an error, then that'll put the hurt on the whole operation. If you -// never call cb(), then you'll never get another chunk. -Transform.prototype._transform = function (chunk, encoding, cb) { - throw new Error('_transform() is not implemented'); -}; - -Transform.prototype._write = function (chunk, encoding, cb) { - var ts = this._transformState; - ts.writecb = cb; - ts.writechunk = chunk; - ts.writeencoding = encoding; - if (!ts.transforming) { - var rs = this._readableState; - if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark); - } -}; - -// Doesn't matter what the args are here. -// _transform does all the work. -// That we got here means that the readable side wants more data. -Transform.prototype._read = function (n) { - var ts = this._transformState; - - if (ts.writechunk !== null && ts.writecb && !ts.transforming) { - ts.transforming = true; - this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform); - } else { - // mark that we need a transform, so that any data that comes in - // will get processed, now that we've asked for it. - ts.needTransform = true; - } -}; - -Transform.prototype._destroy = function (err, cb) { - var _this = this; - - Duplex.prototype._destroy.call(this, err, function (err2) { - cb(err2); - _this.emit('close'); - }); -}; - -function done(stream, er, data) { - if (er) return stream.emit('error', er); - - if (data !== null && data !== undefined) stream.push(data); - - // if there's nothing in the write buffer, then that means - // that nothing more will ever be provided - var ws = stream._writableState; - var ts = stream._transformState; - - if (ws.length) throw new Error('Calling transform done when ws.length != 0'); - - if (ts.transforming) throw new Error('Calling transform done when still transforming'); - - return stream.push(null); -} -},{"./_stream_duplex":27,"core-util-is":14,"inherits":21}],31:[function(require,module,exports){ -(function (process,global){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// A bit simpler than readable streams. -// Implement an async ._write(chunk, encoding, cb), and it'll handle all -// the drain event emission and buffering. - -'use strict'; - -/**/ - -var processNextTick = require('process-nextick-args'); -/**/ - -module.exports = Writable; - -/* */ -function WriteReq(chunk, encoding, cb) { - this.chunk = chunk; - this.encoding = encoding; - this.callback = cb; - this.next = null; -} - -// It seems a linked list but it is not -// there will be only 2 of these for each stream -function CorkedRequest(state) { - var _this = this; - - this.next = null; - this.entry = null; - this.finish = function () { - onCorkedFinish(_this, state); - }; -} -/* */ - -/**/ -var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick; -/**/ - -/**/ -var Duplex; -/**/ - -Writable.WritableState = WritableState; - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -/**/ -var internalUtil = { - deprecate: require('util-deprecate') -}; -/**/ - -/**/ -var Stream = require('./internal/streams/stream'); -/**/ - -/**/ -var Buffer = require('safe-buffer').Buffer; -var OurUint8Array = global.Uint8Array || function () {}; -function _uint8ArrayToBuffer(chunk) { - return Buffer.from(chunk); -} -function _isUint8Array(obj) { - return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; -} -/**/ - -var destroyImpl = require('./internal/streams/destroy'); - -util.inherits(Writable, Stream); - -function nop() {} - -function WritableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); - - options = options || {}; - - // object stream flag to indicate whether or not this stream - // contains buffers or objects. - this.objectMode = !!options.objectMode; - - if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode; - - // the point at which write() starts returning false - // Note: 0 is a valid value, means that we always return false if - // the entire buffer is not flushed immediately on write() - var hwm = options.highWaterMark; - var defaultHwm = this.objectMode ? 16 : 16 * 1024; - this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm; - - // cast to ints. - this.highWaterMark = Math.floor(this.highWaterMark); - - // if _final has been called - this.finalCalled = false; - - // drain event flag. - this.needDrain = false; - // at the start of calling end() - this.ending = false; - // when end() has been called, and returned - this.ended = false; - // when 'finish' is emitted - this.finished = false; - - // has it been destroyed - this.destroyed = false; - - // should we decode strings into buffers before passing to _write? - // this is here so that some node-core streams can optimize string - // handling at a lower level. - var noDecode = options.decodeStrings === false; - this.decodeStrings = !noDecode; - - // Crypto is kind of old and crusty. Historically, its default string - // encoding is 'binary' so we have to make this configurable. - // Everything else in the universe uses 'utf8', though. - this.defaultEncoding = options.defaultEncoding || 'utf8'; - - // not an actual buffer we keep track of, but a measurement - // of how much we're waiting to get pushed to some underlying - // socket or file. - this.length = 0; - - // a flag to see when we're in the middle of a write. - this.writing = false; - - // when true all writes will be buffered until .uncork() call - this.corked = 0; - - // a flag to be able to tell if the onwrite cb is called immediately, - // or on a later tick. We set this to true at first, because any - // actions that shouldn't happen until "later" should generally also - // not happen before the first write call. - this.sync = true; - - // a flag to know if we're processing previously buffered items, which - // may call the _write() callback in the same tick, so that we don't - // end up in an overlapped onwrite situation. - this.bufferProcessing = false; - - // the callback that's passed to _write(chunk,cb) - this.onwrite = function (er) { - onwrite(stream, er); - }; - - // the callback that the user supplies to write(chunk,encoding,cb) - this.writecb = null; - - // the amount that is being written when _write is called. - this.writelen = 0; - - this.bufferedRequest = null; - this.lastBufferedRequest = null; - - // number of pending user-supplied write callbacks - // this must be 0 before 'finish' can be emitted - this.pendingcb = 0; - - // emit prefinish if the only thing we're waiting for is _write cbs - // This is relevant for synchronous Transform streams - this.prefinished = false; - - // True if the error was already emitted and should not be thrown again - this.errorEmitted = false; - - // count buffered requests - this.bufferedRequestCount = 0; - - // allocate the first CorkedRequest, there is always - // one allocated and free to use, and we maintain at most two - this.corkedRequestsFree = new CorkedRequest(this); -} - -WritableState.prototype.getBuffer = function getBuffer() { - var current = this.bufferedRequest; - var out = []; - while (current) { - out.push(current); - current = current.next; - } - return out; -}; - -(function () { - try { - Object.defineProperty(WritableState.prototype, 'buffer', { - get: internalUtil.deprecate(function () { - return this.getBuffer(); - }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003') - }); - } catch (_) {} -})(); - -// Test _writableState for inheritance to account for Duplex streams, -// whose prototype chain only points to Readable. -var realHasInstance; -if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') { - realHasInstance = Function.prototype[Symbol.hasInstance]; - Object.defineProperty(Writable, Symbol.hasInstance, { - value: function (object) { - if (realHasInstance.call(this, object)) return true; - - return object && object._writableState instanceof WritableState; - } - }); -} else { - realHasInstance = function (object) { - return object instanceof this; - }; -} - -function Writable(options) { - Duplex = Duplex || require('./_stream_duplex'); - - // Writable ctor is applied to Duplexes, too. - // `realHasInstance` is necessary because using plain `instanceof` - // would return false, as no `_writableState` property is attached. - - // Trying to use the custom `instanceof` for Writable here will also break the - // Node.js LazyTransform implementation, which has a non-trivial getter for - // `_writableState` that would lead to infinite recursion. - if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) { - return new Writable(options); - } - - this._writableState = new WritableState(options, this); - - // legacy. - this.writable = true; - - if (options) { - if (typeof options.write === 'function') this._write = options.write; - - if (typeof options.writev === 'function') this._writev = options.writev; - - if (typeof options.destroy === 'function') this._destroy = options.destroy; - - if (typeof options.final === 'function') this._final = options.final; - } - - Stream.call(this); -} - -// Otherwise people can pipe Writable streams, which is just wrong. -Writable.prototype.pipe = function () { - this.emit('error', new Error('Cannot pipe, not readable')); -}; - -function writeAfterEnd(stream, cb) { - var er = new Error('write after end'); - // TODO: defer error events consistently everywhere, not just the cb - stream.emit('error', er); - processNextTick(cb, er); -} - -// Checks that a user-supplied chunk is valid, especially for the particular -// mode the stream is in. Currently this means that `null` is never accepted -// and undefined/non-string values are only allowed in object mode. -function validChunk(stream, state, chunk, cb) { - var valid = true; - var er = false; - - if (chunk === null) { - er = new TypeError('May not write null values to stream'); - } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { - er = new TypeError('Invalid non-string/buffer chunk'); - } - if (er) { - stream.emit('error', er); - processNextTick(cb, er); - valid = false; - } - return valid; -} - -Writable.prototype.write = function (chunk, encoding, cb) { - var state = this._writableState; - var ret = false; - var isBuf = _isUint8Array(chunk) && !state.objectMode; - - if (isBuf && !Buffer.isBuffer(chunk)) { - chunk = _uint8ArrayToBuffer(chunk); - } - - if (typeof encoding === 'function') { - cb = encoding; - encoding = null; - } - - if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding; - - if (typeof cb !== 'function') cb = nop; - - if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) { - state.pendingcb++; - ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb); - } - - return ret; -}; - -Writable.prototype.cork = function () { - var state = this._writableState; - - state.corked++; -}; - -Writable.prototype.uncork = function () { - var state = this._writableState; - - if (state.corked) { - state.corked--; - - if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state); - } -}; - -Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) { - // node::ParseEncoding() requires lower case. - if (typeof encoding === 'string') encoding = encoding.toLowerCase(); - if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding); - this._writableState.defaultEncoding = encoding; - return this; -}; - -function decodeChunk(state, chunk, encoding) { - if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') { - chunk = Buffer.from(chunk, encoding); - } - return chunk; -} - -// if we're already writing something, then just put this -// in the queue, and wait our turn. Otherwise, call _write -// If we return false, then we need a drain event, so set that flag. -function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) { - if (!isBuf) { - var newChunk = decodeChunk(state, chunk, encoding); - if (chunk !== newChunk) { - isBuf = true; - encoding = 'buffer'; - chunk = newChunk; - } - } - var len = state.objectMode ? 1 : chunk.length; - - state.length += len; - - var ret = state.length < state.highWaterMark; - // we must ensure that previous needDrain will not be reset to false. - if (!ret) state.needDrain = true; - - if (state.writing || state.corked) { - var last = state.lastBufferedRequest; - state.lastBufferedRequest = { - chunk: chunk, - encoding: encoding, - isBuf: isBuf, - callback: cb, - next: null - }; - if (last) { - last.next = state.lastBufferedRequest; - } else { - state.bufferedRequest = state.lastBufferedRequest; - } - state.bufferedRequestCount += 1; - } else { - doWrite(stream, state, false, len, chunk, encoding, cb); - } - - return ret; -} - -function doWrite(stream, state, writev, len, chunk, encoding, cb) { - state.writelen = len; - state.writecb = cb; - state.writing = true; - state.sync = true; - if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite); - state.sync = false; -} - -function onwriteError(stream, state, sync, er, cb) { - --state.pendingcb; - - if (sync) { - // defer the callback if we are being called synchronously - // to avoid piling up things on the stack - processNextTick(cb, er); - // this can emit finish, and it will always happen - // after error - processNextTick(finishMaybe, stream, state); - stream._writableState.errorEmitted = true; - stream.emit('error', er); - } else { - // the caller expect this to happen before if - // it is async - cb(er); - stream._writableState.errorEmitted = true; - stream.emit('error', er); - // this can emit finish, but finish must - // always follow error - finishMaybe(stream, state); - } -} - -function onwriteStateUpdate(state) { - state.writing = false; - state.writecb = null; - state.length -= state.writelen; - state.writelen = 0; -} - -function onwrite(stream, er) { - var state = stream._writableState; - var sync = state.sync; - var cb = state.writecb; - - onwriteStateUpdate(state); - - if (er) onwriteError(stream, state, sync, er, cb);else { - // Check if we're actually ready to finish, but don't emit yet - var finished = needFinish(state); - - if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) { - clearBuffer(stream, state); - } - - if (sync) { - /**/ - asyncWrite(afterWrite, stream, state, finished, cb); - /**/ - } else { - afterWrite(stream, state, finished, cb); - } - } -} - -function afterWrite(stream, state, finished, cb) { - if (!finished) onwriteDrain(stream, state); - state.pendingcb--; - cb(); - finishMaybe(stream, state); -} - -// Must force callback to be called on nextTick, so that we don't -// emit 'drain' before the write() consumer gets the 'false' return -// value, and has a chance to attach a 'drain' listener. -function onwriteDrain(stream, state) { - if (state.length === 0 && state.needDrain) { - state.needDrain = false; - stream.emit('drain'); - } -} - -// if there's something in the buffer waiting, then process it -function clearBuffer(stream, state) { - state.bufferProcessing = true; - var entry = state.bufferedRequest; - - if (stream._writev && entry && entry.next) { - // Fast case, write everything using _writev() - var l = state.bufferedRequestCount; - var buffer = new Array(l); - var holder = state.corkedRequestsFree; - holder.entry = entry; - - var count = 0; - var allBuffers = true; - while (entry) { - buffer[count] = entry; - if (!entry.isBuf) allBuffers = false; - entry = entry.next; - count += 1; - } - buffer.allBuffers = allBuffers; - - doWrite(stream, state, true, state.length, buffer, '', holder.finish); - - // doWrite is almost always async, defer these to save a bit of time - // as the hot path ends with doWrite - state.pendingcb++; - state.lastBufferedRequest = null; - if (holder.next) { - state.corkedRequestsFree = holder.next; - holder.next = null; - } else { - state.corkedRequestsFree = new CorkedRequest(state); - } - } else { - // Slow case, write chunks one-by-one - while (entry) { - var chunk = entry.chunk; - var encoding = entry.encoding; - var cb = entry.callback; - var len = state.objectMode ? 1 : chunk.length; - - doWrite(stream, state, false, len, chunk, encoding, cb); - entry = entry.next; - // if we didn't call the onwrite immediately, then - // it means that we need to wait until it does. - // also, that means that the chunk and cb are currently - // being processed, so move the buffer counter past them. - if (state.writing) { - break; - } - } - - if (entry === null) state.lastBufferedRequest = null; - } - - state.bufferedRequestCount = 0; - state.bufferedRequest = entry; - state.bufferProcessing = false; -} - -Writable.prototype._write = function (chunk, encoding, cb) { - cb(new Error('_write() is not implemented')); -}; - -Writable.prototype._writev = null; - -Writable.prototype.end = function (chunk, encoding, cb) { - var state = this._writableState; - - if (typeof chunk === 'function') { - cb = chunk; - chunk = null; - encoding = null; - } else if (typeof encoding === 'function') { - cb = encoding; - encoding = null; - } - - if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); - - // .end() fully uncorks - if (state.corked) { - state.corked = 1; - this.uncork(); - } - - // ignore unnecessary end() calls. - if (!state.ending && !state.finished) endWritable(this, state, cb); -}; - -function needFinish(state) { - return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing; -} -function callFinal(stream, state) { - stream._final(function (err) { - state.pendingcb--; - if (err) { - stream.emit('error', err); - } - state.prefinished = true; - stream.emit('prefinish'); - finishMaybe(stream, state); - }); -} -function prefinish(stream, state) { - if (!state.prefinished && !state.finalCalled) { - if (typeof stream._final === 'function') { - state.pendingcb++; - state.finalCalled = true; - processNextTick(callFinal, stream, state); - } else { - state.prefinished = true; - stream.emit('prefinish'); - } - } -} - -function finishMaybe(stream, state) { - var need = needFinish(state); - if (need) { - prefinish(stream, state); - if (state.pendingcb === 0) { - state.finished = true; - stream.emit('finish'); - } - } - return need; -} - -function endWritable(stream, state, cb) { - state.ending = true; - finishMaybe(stream, state); - if (cb) { - if (state.finished) processNextTick(cb);else stream.once('finish', cb); - } - state.ended = true; - stream.writable = false; -} - -function onCorkedFinish(corkReq, state, err) { - var entry = corkReq.entry; - corkReq.entry = null; - while (entry) { - var cb = entry.callback; - state.pendingcb--; - cb(err); - entry = entry.next; - } - if (state.corkedRequestsFree) { - state.corkedRequestsFree.next = corkReq; - } else { - state.corkedRequestsFree = corkReq; - } -} - -Object.defineProperty(Writable.prototype, 'destroyed', { - get: function () { - if (this._writableState === undefined) { - return false; - } - return this._writableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (!this._writableState) { - return; - } - - // backward compatibility, the user is explicitly - // managing destroyed - this._writableState.destroyed = value; - } -}); - -Writable.prototype.destroy = destroyImpl.destroy; -Writable.prototype._undestroy = destroyImpl.undestroy; -Writable.prototype._destroy = function (err, cb) { - this.end(); - cb(err); -}; -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./_stream_duplex":27,"./internal/streams/destroy":33,"./internal/streams/stream":34,"_process":25,"core-util-is":14,"inherits":21,"process-nextick-args":24,"safe-buffer":40,"util-deprecate":51}],32:[function(require,module,exports){ -'use strict'; - -/**/ - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } - -var Buffer = require('safe-buffer').Buffer; -/**/ - -function copyBuffer(src, target, offset) { - src.copy(target, offset); -} - -module.exports = function () { - function BufferList() { - _classCallCheck(this, BufferList); - - this.head = null; - this.tail = null; - this.length = 0; - } - - BufferList.prototype.push = function push(v) { - var entry = { data: v, next: null }; - if (this.length > 0) this.tail.next = entry;else this.head = entry; - this.tail = entry; - ++this.length; - }; - - BufferList.prototype.unshift = function unshift(v) { - var entry = { data: v, next: this.head }; - if (this.length === 0) this.tail = entry; - this.head = entry; - ++this.length; - }; - - BufferList.prototype.shift = function shift() { - if (this.length === 0) return; - var ret = this.head.data; - if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next; - --this.length; - return ret; - }; - - BufferList.prototype.clear = function clear() { - this.head = this.tail = null; - this.length = 0; - }; - - BufferList.prototype.join = function join(s) { - if (this.length === 0) return ''; - var p = this.head; - var ret = '' + p.data; - while (p = p.next) { - ret += s + p.data; - }return ret; - }; - - BufferList.prototype.concat = function concat(n) { - if (this.length === 0) return Buffer.alloc(0); - if (this.length === 1) return this.head.data; - var ret = Buffer.allocUnsafe(n >>> 0); - var p = this.head; - var i = 0; - while (p) { - copyBuffer(p.data, ret, i); - i += p.data.length; - p = p.next; - } - return ret; - }; - - return BufferList; -}(); -},{"safe-buffer":40}],33:[function(require,module,exports){ -'use strict'; - -/**/ - -var processNextTick = require('process-nextick-args'); -/**/ - -// undocumented cb() API, needed for core, not for public API -function destroy(err, cb) { - var _this = this; - - var readableDestroyed = this._readableState && this._readableState.destroyed; - var writableDestroyed = this._writableState && this._writableState.destroyed; - - if (readableDestroyed || writableDestroyed) { - if (cb) { - cb(err); - } else if (err && (!this._writableState || !this._writableState.errorEmitted)) { - processNextTick(emitErrorNT, this, err); - } - return; - } - - // we set destroyed to true before firing error callbacks in order - // to make it re-entrance safe in case destroy() is called within callbacks - - if (this._readableState) { - this._readableState.destroyed = true; - } - - // if this is a duplex stream mark the writable part as destroyed as well - if (this._writableState) { - this._writableState.destroyed = true; - } - - this._destroy(err || null, function (err) { - if (!cb && err) { - processNextTick(emitErrorNT, _this, err); - if (_this._writableState) { - _this._writableState.errorEmitted = true; - } - } else if (cb) { - cb(err); - } - }); -} - -function undestroy() { - if (this._readableState) { - this._readableState.destroyed = false; - this._readableState.reading = false; - this._readableState.ended = false; - this._readableState.endEmitted = false; - } - - if (this._writableState) { - this._writableState.destroyed = false; - this._writableState.ended = false; - this._writableState.ending = false; - this._writableState.finished = false; - this._writableState.errorEmitted = false; - } -} - -function emitErrorNT(self, err) { - self.emit('error', err); -} - -module.exports = { - destroy: destroy, - undestroy: undestroy -}; -},{"process-nextick-args":24}],34:[function(require,module,exports){ -module.exports = require('events').EventEmitter; - -},{"events":18}],35:[function(require,module,exports){ -module.exports = require('./readable').PassThrough - -},{"./readable":36}],36:[function(require,module,exports){ -exports = module.exports = require('./lib/_stream_readable.js'); -exports.Stream = exports; -exports.Readable = exports; -exports.Writable = require('./lib/_stream_writable.js'); -exports.Duplex = require('./lib/_stream_duplex.js'); -exports.Transform = require('./lib/_stream_transform.js'); -exports.PassThrough = require('./lib/_stream_passthrough.js'); - -},{"./lib/_stream_duplex.js":27,"./lib/_stream_passthrough.js":28,"./lib/_stream_readable.js":29,"./lib/_stream_transform.js":30,"./lib/_stream_writable.js":31}],37:[function(require,module,exports){ -module.exports = require('./readable').Transform - -},{"./readable":36}],38:[function(require,module,exports){ -module.exports = require('./lib/_stream_writable.js'); - -},{"./lib/_stream_writable.js":31}],39:[function(require,module,exports){ -(function (Buffer){ -'use strict' -var inherits = require('inherits') -var HashBase = require('hash-base') - -function RIPEMD160 () { - HashBase.call(this, 64) - - // state - this._a = 0x67452301 - this._b = 0xefcdab89 - this._c = 0x98badcfe - this._d = 0x10325476 - this._e = 0xc3d2e1f0 -} - -inherits(RIPEMD160, HashBase) - -RIPEMD160.prototype._update = function () { - var m = new Array(16) - for (var i = 0; i < 16; ++i) m[i] = this._block.readInt32LE(i * 4) - - var al = this._a - var bl = this._b - var cl = this._c - var dl = this._d - var el = this._e - - // Mj = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 - // K = 0x00000000 - // Sj = 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8 - al = fn1(al, bl, cl, dl, el, m[0], 0x00000000, 11); cl = rotl(cl, 10) - el = fn1(el, al, bl, cl, dl, m[1], 0x00000000, 14); bl = rotl(bl, 10) - dl = fn1(dl, el, al, bl, cl, m[2], 0x00000000, 15); al = rotl(al, 10) - cl = fn1(cl, dl, el, al, bl, m[3], 0x00000000, 12); el = rotl(el, 10) - bl = fn1(bl, cl, dl, el, al, m[4], 0x00000000, 5); dl = rotl(dl, 10) - al = fn1(al, bl, cl, dl, el, m[5], 0x00000000, 8); cl = rotl(cl, 10) - el = fn1(el, al, bl, cl, dl, m[6], 0x00000000, 7); bl = rotl(bl, 10) - dl = fn1(dl, el, al, bl, cl, m[7], 0x00000000, 9); al = rotl(al, 10) - cl = fn1(cl, dl, el, al, bl, m[8], 0x00000000, 11); el = rotl(el, 10) - bl = fn1(bl, cl, dl, el, al, m[9], 0x00000000, 13); dl = rotl(dl, 10) - al = fn1(al, bl, cl, dl, el, m[10], 0x00000000, 14); cl = rotl(cl, 10) - el = fn1(el, al, bl, cl, dl, m[11], 0x00000000, 15); bl = rotl(bl, 10) - dl = fn1(dl, el, al, bl, cl, m[12], 0x00000000, 6); al = rotl(al, 10) - cl = fn1(cl, dl, el, al, bl, m[13], 0x00000000, 7); el = rotl(el, 10) - bl = fn1(bl, cl, dl, el, al, m[14], 0x00000000, 9); dl = rotl(dl, 10) - al = fn1(al, bl, cl, dl, el, m[15], 0x00000000, 8); cl = rotl(cl, 10) - - // Mj = 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8 - // K = 0x5a827999 - // Sj = 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12 - el = fn2(el, al, bl, cl, dl, m[7], 0x5a827999, 7); bl = rotl(bl, 10) - dl = fn2(dl, el, al, bl, cl, m[4], 0x5a827999, 6); al = rotl(al, 10) - cl = fn2(cl, dl, el, al, bl, m[13], 0x5a827999, 8); el = rotl(el, 10) - bl = fn2(bl, cl, dl, el, al, m[1], 0x5a827999, 13); dl = rotl(dl, 10) - al = fn2(al, bl, cl, dl, el, m[10], 0x5a827999, 11); cl = rotl(cl, 10) - el = fn2(el, al, bl, cl, dl, m[6], 0x5a827999, 9); bl = rotl(bl, 10) - dl = fn2(dl, el, al, bl, cl, m[15], 0x5a827999, 7); al = rotl(al, 10) - cl = fn2(cl, dl, el, al, bl, m[3], 0x5a827999, 15); el = rotl(el, 10) - bl = fn2(bl, cl, dl, el, al, m[12], 0x5a827999, 7); dl = rotl(dl, 10) - al = fn2(al, bl, cl, dl, el, m[0], 0x5a827999, 12); cl = rotl(cl, 10) - el = fn2(el, al, bl, cl, dl, m[9], 0x5a827999, 15); bl = rotl(bl, 10) - dl = fn2(dl, el, al, bl, cl, m[5], 0x5a827999, 9); al = rotl(al, 10) - cl = fn2(cl, dl, el, al, bl, m[2], 0x5a827999, 11); el = rotl(el, 10) - bl = fn2(bl, cl, dl, el, al, m[14], 0x5a827999, 7); dl = rotl(dl, 10) - al = fn2(al, bl, cl, dl, el, m[11], 0x5a827999, 13); cl = rotl(cl, 10) - el = fn2(el, al, bl, cl, dl, m[8], 0x5a827999, 12); bl = rotl(bl, 10) - - // Mj = 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12 - // K = 0x6ed9eba1 - // Sj = 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5 - dl = fn3(dl, el, al, bl, cl, m[3], 0x6ed9eba1, 11); al = rotl(al, 10) - cl = fn3(cl, dl, el, al, bl, m[10], 0x6ed9eba1, 13); el = rotl(el, 10) - bl = fn3(bl, cl, dl, el, al, m[14], 0x6ed9eba1, 6); dl = rotl(dl, 10) - al = fn3(al, bl, cl, dl, el, m[4], 0x6ed9eba1, 7); cl = rotl(cl, 10) - el = fn3(el, al, bl, cl, dl, m[9], 0x6ed9eba1, 14); bl = rotl(bl, 10) - dl = fn3(dl, el, al, bl, cl, m[15], 0x6ed9eba1, 9); al = rotl(al, 10) - cl = fn3(cl, dl, el, al, bl, m[8], 0x6ed9eba1, 13); el = rotl(el, 10) - bl = fn3(bl, cl, dl, el, al, m[1], 0x6ed9eba1, 15); dl = rotl(dl, 10) - al = fn3(al, bl, cl, dl, el, m[2], 0x6ed9eba1, 14); cl = rotl(cl, 10) - el = fn3(el, al, bl, cl, dl, m[7], 0x6ed9eba1, 8); bl = rotl(bl, 10) - dl = fn3(dl, el, al, bl, cl, m[0], 0x6ed9eba1, 13); al = rotl(al, 10) - cl = fn3(cl, dl, el, al, bl, m[6], 0x6ed9eba1, 6); el = rotl(el, 10) - bl = fn3(bl, cl, dl, el, al, m[13], 0x6ed9eba1, 5); dl = rotl(dl, 10) - al = fn3(al, bl, cl, dl, el, m[11], 0x6ed9eba1, 12); cl = rotl(cl, 10) - el = fn3(el, al, bl, cl, dl, m[5], 0x6ed9eba1, 7); bl = rotl(bl, 10) - dl = fn3(dl, el, al, bl, cl, m[12], 0x6ed9eba1, 5); al = rotl(al, 10) - - // Mj = 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2 - // K = 0x8f1bbcdc - // Sj = 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12 - cl = fn4(cl, dl, el, al, bl, m[1], 0x8f1bbcdc, 11); el = rotl(el, 10) - bl = fn4(bl, cl, dl, el, al, m[9], 0x8f1bbcdc, 12); dl = rotl(dl, 10) - al = fn4(al, bl, cl, dl, el, m[11], 0x8f1bbcdc, 14); cl = rotl(cl, 10) - el = fn4(el, al, bl, cl, dl, m[10], 0x8f1bbcdc, 15); bl = rotl(bl, 10) - dl = fn4(dl, el, al, bl, cl, m[0], 0x8f1bbcdc, 14); al = rotl(al, 10) - cl = fn4(cl, dl, el, al, bl, m[8], 0x8f1bbcdc, 15); el = rotl(el, 10) - bl = fn4(bl, cl, dl, el, al, m[12], 0x8f1bbcdc, 9); dl = rotl(dl, 10) - al = fn4(al, bl, cl, dl, el, m[4], 0x8f1bbcdc, 8); cl = rotl(cl, 10) - el = fn4(el, al, bl, cl, dl, m[13], 0x8f1bbcdc, 9); bl = rotl(bl, 10) - dl = fn4(dl, el, al, bl, cl, m[3], 0x8f1bbcdc, 14); al = rotl(al, 10) - cl = fn4(cl, dl, el, al, bl, m[7], 0x8f1bbcdc, 5); el = rotl(el, 10) - bl = fn4(bl, cl, dl, el, al, m[15], 0x8f1bbcdc, 6); dl = rotl(dl, 10) - al = fn4(al, bl, cl, dl, el, m[14], 0x8f1bbcdc, 8); cl = rotl(cl, 10) - el = fn4(el, al, bl, cl, dl, m[5], 0x8f1bbcdc, 6); bl = rotl(bl, 10) - dl = fn4(dl, el, al, bl, cl, m[6], 0x8f1bbcdc, 5); al = rotl(al, 10) - cl = fn4(cl, dl, el, al, bl, m[2], 0x8f1bbcdc, 12); el = rotl(el, 10) - - // Mj = 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 - // K = 0xa953fd4e - // Sj = 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 - bl = fn5(bl, cl, dl, el, al, m[4], 0xa953fd4e, 9); dl = rotl(dl, 10) - al = fn5(al, bl, cl, dl, el, m[0], 0xa953fd4e, 15); cl = rotl(cl, 10) - el = fn5(el, al, bl, cl, dl, m[5], 0xa953fd4e, 5); bl = rotl(bl, 10) - dl = fn5(dl, el, al, bl, cl, m[9], 0xa953fd4e, 11); al = rotl(al, 10) - cl = fn5(cl, dl, el, al, bl, m[7], 0xa953fd4e, 6); el = rotl(el, 10) - bl = fn5(bl, cl, dl, el, al, m[12], 0xa953fd4e, 8); dl = rotl(dl, 10) - al = fn5(al, bl, cl, dl, el, m[2], 0xa953fd4e, 13); cl = rotl(cl, 10) - el = fn5(el, al, bl, cl, dl, m[10], 0xa953fd4e, 12); bl = rotl(bl, 10) - dl = fn5(dl, el, al, bl, cl, m[14], 0xa953fd4e, 5); al = rotl(al, 10) - cl = fn5(cl, dl, el, al, bl, m[1], 0xa953fd4e, 12); el = rotl(el, 10) - bl = fn5(bl, cl, dl, el, al, m[3], 0xa953fd4e, 13); dl = rotl(dl, 10) - al = fn5(al, bl, cl, dl, el, m[8], 0xa953fd4e, 14); cl = rotl(cl, 10) - el = fn5(el, al, bl, cl, dl, m[11], 0xa953fd4e, 11); bl = rotl(bl, 10) - dl = fn5(dl, el, al, bl, cl, m[6], 0xa953fd4e, 8); al = rotl(al, 10) - cl = fn5(cl, dl, el, al, bl, m[15], 0xa953fd4e, 5); el = rotl(el, 10) - bl = fn5(bl, cl, dl, el, al, m[13], 0xa953fd4e, 6); dl = rotl(dl, 10) - - var ar = this._a - var br = this._b - var cr = this._c - var dr = this._d - var er = this._e - - // M'j = 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12 - // K' = 0x50a28be6 - // S'j = 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6 - ar = fn5(ar, br, cr, dr, er, m[5], 0x50a28be6, 8); cr = rotl(cr, 10) - er = fn5(er, ar, br, cr, dr, m[14], 0x50a28be6, 9); br = rotl(br, 10) - dr = fn5(dr, er, ar, br, cr, m[7], 0x50a28be6, 9); ar = rotl(ar, 10) - cr = fn5(cr, dr, er, ar, br, m[0], 0x50a28be6, 11); er = rotl(er, 10) - br = fn5(br, cr, dr, er, ar, m[9], 0x50a28be6, 13); dr = rotl(dr, 10) - ar = fn5(ar, br, cr, dr, er, m[2], 0x50a28be6, 15); cr = rotl(cr, 10) - er = fn5(er, ar, br, cr, dr, m[11], 0x50a28be6, 15); br = rotl(br, 10) - dr = fn5(dr, er, ar, br, cr, m[4], 0x50a28be6, 5); ar = rotl(ar, 10) - cr = fn5(cr, dr, er, ar, br, m[13], 0x50a28be6, 7); er = rotl(er, 10) - br = fn5(br, cr, dr, er, ar, m[6], 0x50a28be6, 7); dr = rotl(dr, 10) - ar = fn5(ar, br, cr, dr, er, m[15], 0x50a28be6, 8); cr = rotl(cr, 10) - er = fn5(er, ar, br, cr, dr, m[8], 0x50a28be6, 11); br = rotl(br, 10) - dr = fn5(dr, er, ar, br, cr, m[1], 0x50a28be6, 14); ar = rotl(ar, 10) - cr = fn5(cr, dr, er, ar, br, m[10], 0x50a28be6, 14); er = rotl(er, 10) - br = fn5(br, cr, dr, er, ar, m[3], 0x50a28be6, 12); dr = rotl(dr, 10) - ar = fn5(ar, br, cr, dr, er, m[12], 0x50a28be6, 6); cr = rotl(cr, 10) - - // M'j = 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2 - // K' = 0x5c4dd124 - // S'j = 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11 - er = fn4(er, ar, br, cr, dr, m[6], 0x5c4dd124, 9); br = rotl(br, 10) - dr = fn4(dr, er, ar, br, cr, m[11], 0x5c4dd124, 13); ar = rotl(ar, 10) - cr = fn4(cr, dr, er, ar, br, m[3], 0x5c4dd124, 15); er = rotl(er, 10) - br = fn4(br, cr, dr, er, ar, m[7], 0x5c4dd124, 7); dr = rotl(dr, 10) - ar = fn4(ar, br, cr, dr, er, m[0], 0x5c4dd124, 12); cr = rotl(cr, 10) - er = fn4(er, ar, br, cr, dr, m[13], 0x5c4dd124, 8); br = rotl(br, 10) - dr = fn4(dr, er, ar, br, cr, m[5], 0x5c4dd124, 9); ar = rotl(ar, 10) - cr = fn4(cr, dr, er, ar, br, m[10], 0x5c4dd124, 11); er = rotl(er, 10) - br = fn4(br, cr, dr, er, ar, m[14], 0x5c4dd124, 7); dr = rotl(dr, 10) - ar = fn4(ar, br, cr, dr, er, m[15], 0x5c4dd124, 7); cr = rotl(cr, 10) - er = fn4(er, ar, br, cr, dr, m[8], 0x5c4dd124, 12); br = rotl(br, 10) - dr = fn4(dr, er, ar, br, cr, m[12], 0x5c4dd124, 7); ar = rotl(ar, 10) - cr = fn4(cr, dr, er, ar, br, m[4], 0x5c4dd124, 6); er = rotl(er, 10) - br = fn4(br, cr, dr, er, ar, m[9], 0x5c4dd124, 15); dr = rotl(dr, 10) - ar = fn4(ar, br, cr, dr, er, m[1], 0x5c4dd124, 13); cr = rotl(cr, 10) - er = fn4(er, ar, br, cr, dr, m[2], 0x5c4dd124, 11); br = rotl(br, 10) - - // M'j = 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13 - // K' = 0x6d703ef3 - // S'j = 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5 - dr = fn3(dr, er, ar, br, cr, m[15], 0x6d703ef3, 9); ar = rotl(ar, 10) - cr = fn3(cr, dr, er, ar, br, m[5], 0x6d703ef3, 7); er = rotl(er, 10) - br = fn3(br, cr, dr, er, ar, m[1], 0x6d703ef3, 15); dr = rotl(dr, 10) - ar = fn3(ar, br, cr, dr, er, m[3], 0x6d703ef3, 11); cr = rotl(cr, 10) - er = fn3(er, ar, br, cr, dr, m[7], 0x6d703ef3, 8); br = rotl(br, 10) - dr = fn3(dr, er, ar, br, cr, m[14], 0x6d703ef3, 6); ar = rotl(ar, 10) - cr = fn3(cr, dr, er, ar, br, m[6], 0x6d703ef3, 6); er = rotl(er, 10) - br = fn3(br, cr, dr, er, ar, m[9], 0x6d703ef3, 14); dr = rotl(dr, 10) - ar = fn3(ar, br, cr, dr, er, m[11], 0x6d703ef3, 12); cr = rotl(cr, 10) - er = fn3(er, ar, br, cr, dr, m[8], 0x6d703ef3, 13); br = rotl(br, 10) - dr = fn3(dr, er, ar, br, cr, m[12], 0x6d703ef3, 5); ar = rotl(ar, 10) - cr = fn3(cr, dr, er, ar, br, m[2], 0x6d703ef3, 14); er = rotl(er, 10) - br = fn3(br, cr, dr, er, ar, m[10], 0x6d703ef3, 13); dr = rotl(dr, 10) - ar = fn3(ar, br, cr, dr, er, m[0], 0x6d703ef3, 13); cr = rotl(cr, 10) - er = fn3(er, ar, br, cr, dr, m[4], 0x6d703ef3, 7); br = rotl(br, 10) - dr = fn3(dr, er, ar, br, cr, m[13], 0x6d703ef3, 5); ar = rotl(ar, 10) - - // M'j = 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14 - // K' = 0x7a6d76e9 - // S'j = 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8 - cr = fn2(cr, dr, er, ar, br, m[8], 0x7a6d76e9, 15); er = rotl(er, 10) - br = fn2(br, cr, dr, er, ar, m[6], 0x7a6d76e9, 5); dr = rotl(dr, 10) - ar = fn2(ar, br, cr, dr, er, m[4], 0x7a6d76e9, 8); cr = rotl(cr, 10) - er = fn2(er, ar, br, cr, dr, m[1], 0x7a6d76e9, 11); br = rotl(br, 10) - dr = fn2(dr, er, ar, br, cr, m[3], 0x7a6d76e9, 14); ar = rotl(ar, 10) - cr = fn2(cr, dr, er, ar, br, m[11], 0x7a6d76e9, 14); er = rotl(er, 10) - br = fn2(br, cr, dr, er, ar, m[15], 0x7a6d76e9, 6); dr = rotl(dr, 10) - ar = fn2(ar, br, cr, dr, er, m[0], 0x7a6d76e9, 14); cr = rotl(cr, 10) - er = fn2(er, ar, br, cr, dr, m[5], 0x7a6d76e9, 6); br = rotl(br, 10) - dr = fn2(dr, er, ar, br, cr, m[12], 0x7a6d76e9, 9); ar = rotl(ar, 10) - cr = fn2(cr, dr, er, ar, br, m[2], 0x7a6d76e9, 12); er = rotl(er, 10) - br = fn2(br, cr, dr, er, ar, m[13], 0x7a6d76e9, 9); dr = rotl(dr, 10) - ar = fn2(ar, br, cr, dr, er, m[9], 0x7a6d76e9, 12); cr = rotl(cr, 10) - er = fn2(er, ar, br, cr, dr, m[7], 0x7a6d76e9, 5); br = rotl(br, 10) - dr = fn2(dr, er, ar, br, cr, m[10], 0x7a6d76e9, 15); ar = rotl(ar, 10) - cr = fn2(cr, dr, er, ar, br, m[14], 0x7a6d76e9, 8); er = rotl(er, 10) - - // M'j = 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 - // K' = 0x00000000 - // S'j = 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 - br = fn1(br, cr, dr, er, ar, m[12], 0x00000000, 8); dr = rotl(dr, 10) - ar = fn1(ar, br, cr, dr, er, m[15], 0x00000000, 5); cr = rotl(cr, 10) - er = fn1(er, ar, br, cr, dr, m[10], 0x00000000, 12); br = rotl(br, 10) - dr = fn1(dr, er, ar, br, cr, m[4], 0x00000000, 9); ar = rotl(ar, 10) - cr = fn1(cr, dr, er, ar, br, m[1], 0x00000000, 12); er = rotl(er, 10) - br = fn1(br, cr, dr, er, ar, m[5], 0x00000000, 5); dr = rotl(dr, 10) - ar = fn1(ar, br, cr, dr, er, m[8], 0x00000000, 14); cr = rotl(cr, 10) - er = fn1(er, ar, br, cr, dr, m[7], 0x00000000, 6); br = rotl(br, 10) - dr = fn1(dr, er, ar, br, cr, m[6], 0x00000000, 8); ar = rotl(ar, 10) - cr = fn1(cr, dr, er, ar, br, m[2], 0x00000000, 13); er = rotl(er, 10) - br = fn1(br, cr, dr, er, ar, m[13], 0x00000000, 6); dr = rotl(dr, 10) - ar = fn1(ar, br, cr, dr, er, m[14], 0x00000000, 5); cr = rotl(cr, 10) - er = fn1(er, ar, br, cr, dr, m[0], 0x00000000, 15); br = rotl(br, 10) - dr = fn1(dr, er, ar, br, cr, m[3], 0x00000000, 13); ar = rotl(ar, 10) - cr = fn1(cr, dr, er, ar, br, m[9], 0x00000000, 11); er = rotl(er, 10) - br = fn1(br, cr, dr, er, ar, m[11], 0x00000000, 11); dr = rotl(dr, 10) - - // change state - var t = (this._b + cl + dr) | 0 - this._b = (this._c + dl + er) | 0 - this._c = (this._d + el + ar) | 0 - this._d = (this._e + al + br) | 0 - this._e = (this._a + bl + cr) | 0 - this._a = t -} - -RIPEMD160.prototype._digest = function () { - // create padding and handle blocks - this._block[this._blockOffset++] = 0x80 - if (this._blockOffset > 56) { - this._block.fill(0, this._blockOffset, 64) - this._update() - this._blockOffset = 0 - } - - this._block.fill(0, this._blockOffset, 56) - this._block.writeUInt32LE(this._length[0], 56) - this._block.writeUInt32LE(this._length[1], 60) - this._update() - - // produce result - var buffer = new Buffer(20) - buffer.writeInt32LE(this._a, 0) - buffer.writeInt32LE(this._b, 4) - buffer.writeInt32LE(this._c, 8) - buffer.writeInt32LE(this._d, 12) - buffer.writeInt32LE(this._e, 16) - return buffer -} - -function rotl (x, n) { - return (x << n) | (x >>> (32 - n)) -} - -function fn1 (a, b, c, d, e, m, k, s) { - return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0 -} - -function fn2 (a, b, c, d, e, m, k, s) { - return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0 -} - -function fn3 (a, b, c, d, e, m, k, s) { - return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0 -} - -function fn4 (a, b, c, d, e, m, k, s) { - return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0 -} - -function fn5 (a, b, c, d, e, m, k, s) { - return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0 -} - -module.exports = RIPEMD160 - -}).call(this,require("buffer").Buffer) -},{"buffer":8,"hash-base":19,"inherits":21}],40:[function(require,module,exports){ -/* eslint-disable node/no-deprecated-api */ -var buffer = require('buffer') -var Buffer = buffer.Buffer - -// alternative to using Object.keys for old browsers -function copyProps (src, dst) { - for (var key in src) { - dst[key] = src[key] - } -} -if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { - module.exports = buffer -} else { - // Copy properties from require('buffer') - copyProps(buffer, exports) - exports.Buffer = SafeBuffer -} - -function SafeBuffer (arg, encodingOrOffset, length) { - return Buffer(arg, encodingOrOffset, length) -} - -// Copy static methods from Buffer -copyProps(Buffer, SafeBuffer) - -SafeBuffer.from = function (arg, encodingOrOffset, length) { - if (typeof arg === 'number') { - throw new TypeError('Argument must not be a number') - } - return Buffer(arg, encodingOrOffset, length) -} - -SafeBuffer.alloc = function (size, fill, encoding) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - var buf = Buffer(size) - if (fill !== undefined) { - if (typeof encoding === 'string') { - buf.fill(fill, encoding) - } else { - buf.fill(fill) - } - } else { - buf.fill(0) - } - return buf -} - -SafeBuffer.allocUnsafe = function (size) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - return Buffer(size) -} - -SafeBuffer.allocUnsafeSlow = function (size) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - return buffer.SlowBuffer(size) -} - -},{"buffer":8}],41:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer - -// prototype class for hash functions -function Hash (blockSize, finalSize) { - this._block = Buffer.alloc(blockSize) - this._finalSize = finalSize - this._blockSize = blockSize - this._len = 0 -} - -Hash.prototype.update = function (data, enc) { - if (typeof data === 'string') { - enc = enc || 'utf8' - data = Buffer.from(data, enc) - } - - var block = this._block - var blockSize = this._blockSize - var length = data.length - var accum = this._len - - for (var offset = 0; offset < length;) { - var assigned = accum % blockSize - var remainder = Math.min(length - offset, blockSize - assigned) - - for (var i = 0; i < remainder; i++) { - block[assigned + i] = data[offset + i] - } - - accum += remainder - offset += remainder - - if ((accum % blockSize) === 0) { - this._update(block) - } - } - - this._len += length - return this -} - -Hash.prototype.digest = function (enc) { - var rem = this._len % this._blockSize - - this._block[rem] = 0x80 - - // zero (rem + 1) trailing bits, where (rem + 1) is the smallest - // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize - this._block.fill(0, rem + 1) - - if (rem >= this._finalSize) { - this._update(this._block) - this._block.fill(0) - } - - var bits = this._len * 8 - - // uint32 - if (bits <= 0xffffffff) { - this._block.writeUInt32BE(bits, this._blockSize - 4) - - // uint64 - } else { - var lowBits = bits & 0xffffffff - var highBits = (bits - lowBits) / 0x100000000 - - this._block.writeUInt32BE(highBits, this._blockSize - 8) - this._block.writeUInt32BE(lowBits, this._blockSize - 4) - } - - this._update(this._block) - var hash = this._hash() - - return enc ? hash.toString(enc) : hash -} - -Hash.prototype._update = function () { - throw new Error('_update must be implemented by subclass') -} - -module.exports = Hash - -},{"safe-buffer":40}],42:[function(require,module,exports){ -var exports = module.exports = function SHA (algorithm) { - algorithm = algorithm.toLowerCase() - - var Algorithm = exports[algorithm] - if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)') - - return new Algorithm() -} - -exports.sha = require('./sha') -exports.sha1 = require('./sha1') -exports.sha224 = require('./sha224') -exports.sha256 = require('./sha256') -exports.sha384 = require('./sha384') -exports.sha512 = require('./sha512') - -},{"./sha":43,"./sha1":44,"./sha224":45,"./sha256":46,"./sha384":47,"./sha512":48}],43:[function(require,module,exports){ -/* - * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined - * in FIPS PUB 180-1 - * This source code is derived from sha1.js of the same repository. - * The difference between SHA-0 and SHA-1 is just a bitwise rotate left - * operation was added. - */ - -var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var K = [ - 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0 -] - -var W = new Array(80) - -function Sha () { - this.init() - this._w = W - - Hash.call(this, 64, 56) -} - -inherits(Sha, Hash) - -Sha.prototype.init = function () { - this._a = 0x67452301 - this._b = 0xefcdab89 - this._c = 0x98badcfe - this._d = 0x10325476 - this._e = 0xc3d2e1f0 - - return this -} - -function rotl5 (num) { - return (num << 5) | (num >>> 27) -} - -function rotl30 (num) { - return (num << 30) | (num >>> 2) -} - -function ft (s, b, c, d) { - if (s === 0) return (b & c) | ((~b) & d) - if (s === 2) return (b & c) | (b & d) | (c & d) - return b ^ c ^ d -} - -Sha.prototype._update = function (M) { - var W = this._w - - var a = this._a | 0 - var b = this._b | 0 - var c = this._c | 0 - var d = this._d | 0 - var e = this._e | 0 - - for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4) - for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16] - - for (var j = 0; j < 80; ++j) { - var s = ~~(j / 20) - var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0 - - e = d - d = c - c = rotl30(b) - b = a - a = t - } - - this._a = (a + this._a) | 0 - this._b = (b + this._b) | 0 - this._c = (c + this._c) | 0 - this._d = (d + this._d) | 0 - this._e = (e + this._e) | 0 -} - -Sha.prototype._hash = function () { - var H = Buffer.allocUnsafe(20) - - H.writeInt32BE(this._a | 0, 0) - H.writeInt32BE(this._b | 0, 4) - H.writeInt32BE(this._c | 0, 8) - H.writeInt32BE(this._d | 0, 12) - H.writeInt32BE(this._e | 0, 16) - - return H -} - -module.exports = Sha - -},{"./hash":41,"inherits":21,"safe-buffer":40}],44:[function(require,module,exports){ -/* - * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined - * in FIPS PUB 180-1 - * Version 2.1a Copyright Paul Johnston 2000 - 2002. - * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet - * Distributed under the BSD License - * See http://pajhome.org.uk/crypt/md5 for details. - */ - -var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var K = [ - 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0 -] - -var W = new Array(80) - -function Sha1 () { - this.init() - this._w = W - - Hash.call(this, 64, 56) -} - -inherits(Sha1, Hash) - -Sha1.prototype.init = function () { - this._a = 0x67452301 - this._b = 0xefcdab89 - this._c = 0x98badcfe - this._d = 0x10325476 - this._e = 0xc3d2e1f0 - - return this -} - -function rotl1 (num) { - return (num << 1) | (num >>> 31) -} - -function rotl5 (num) { - return (num << 5) | (num >>> 27) -} - -function rotl30 (num) { - return (num << 30) | (num >>> 2) -} - -function ft (s, b, c, d) { - if (s === 0) return (b & c) | ((~b) & d) - if (s === 2) return (b & c) | (b & d) | (c & d) - return b ^ c ^ d -} - -Sha1.prototype._update = function (M) { - var W = this._w - - var a = this._a | 0 - var b = this._b | 0 - var c = this._c | 0 - var d = this._d | 0 - var e = this._e | 0 - - for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4) - for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]) - - for (var j = 0; j < 80; ++j) { - var s = ~~(j / 20) - var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0 - - e = d - d = c - c = rotl30(b) - b = a - a = t - } - - this._a = (a + this._a) | 0 - this._b = (b + this._b) | 0 - this._c = (c + this._c) | 0 - this._d = (d + this._d) | 0 - this._e = (e + this._e) | 0 -} - -Sha1.prototype._hash = function () { - var H = Buffer.allocUnsafe(20) - - H.writeInt32BE(this._a | 0, 0) - H.writeInt32BE(this._b | 0, 4) - H.writeInt32BE(this._c | 0, 8) - H.writeInt32BE(this._d | 0, 12) - H.writeInt32BE(this._e | 0, 16) - - return H -} - -module.exports = Sha1 - -},{"./hash":41,"inherits":21,"safe-buffer":40}],45:[function(require,module,exports){ -/** - * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined - * in FIPS 180-2 - * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009. - * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet - * - */ - -var inherits = require('inherits') -var Sha256 = require('./sha256') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var W = new Array(64) - -function Sha224 () { - this.init() - - this._w = W // new Array(64) - - Hash.call(this, 64, 56) -} - -inherits(Sha224, Sha256) - -Sha224.prototype.init = function () { - this._a = 0xc1059ed8 - this._b = 0x367cd507 - this._c = 0x3070dd17 - this._d = 0xf70e5939 - this._e = 0xffc00b31 - this._f = 0x68581511 - this._g = 0x64f98fa7 - this._h = 0xbefa4fa4 - - return this -} - -Sha224.prototype._hash = function () { - var H = Buffer.allocUnsafe(28) - - H.writeInt32BE(this._a, 0) - H.writeInt32BE(this._b, 4) - H.writeInt32BE(this._c, 8) - H.writeInt32BE(this._d, 12) - H.writeInt32BE(this._e, 16) - H.writeInt32BE(this._f, 20) - H.writeInt32BE(this._g, 24) - - return H -} - -module.exports = Sha224 - -},{"./hash":41,"./sha256":46,"inherits":21,"safe-buffer":40}],46:[function(require,module,exports){ -/** - * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined - * in FIPS 180-2 - * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009. - * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet - * - */ - -var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var K = [ - 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, - 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, - 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, - 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, - 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC, - 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, - 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, - 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967, - 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, - 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, - 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, - 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070, - 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, - 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3, - 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, - 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2 -] - -var W = new Array(64) - -function Sha256 () { - this.init() - - this._w = W // new Array(64) - - Hash.call(this, 64, 56) -} - -inherits(Sha256, Hash) - -Sha256.prototype.init = function () { - this._a = 0x6a09e667 - this._b = 0xbb67ae85 - this._c = 0x3c6ef372 - this._d = 0xa54ff53a - this._e = 0x510e527f - this._f = 0x9b05688c - this._g = 0x1f83d9ab - this._h = 0x5be0cd19 - - return this -} - -function ch (x, y, z) { - return z ^ (x & (y ^ z)) -} - -function maj (x, y, z) { - return (x & y) | (z & (x | y)) -} - -function sigma0 (x) { - return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10) -} - -function sigma1 (x) { - return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7) -} - -function gamma0 (x) { - return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3) -} - -function gamma1 (x) { - return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10) -} - -Sha256.prototype._update = function (M) { - var W = this._w - - var a = this._a | 0 - var b = this._b | 0 - var c = this._c | 0 - var d = this._d | 0 - var e = this._e | 0 - var f = this._f | 0 - var g = this._g | 0 - var h = this._h | 0 - - for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4) - for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0 - - for (var j = 0; j < 64; ++j) { - var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0 - var T2 = (sigma0(a) + maj(a, b, c)) | 0 - - h = g - g = f - f = e - e = (d + T1) | 0 - d = c - c = b - b = a - a = (T1 + T2) | 0 - } - - this._a = (a + this._a) | 0 - this._b = (b + this._b) | 0 - this._c = (c + this._c) | 0 - this._d = (d + this._d) | 0 - this._e = (e + this._e) | 0 - this._f = (f + this._f) | 0 - this._g = (g + this._g) | 0 - this._h = (h + this._h) | 0 -} - -Sha256.prototype._hash = function () { - var H = Buffer.allocUnsafe(32) - - H.writeInt32BE(this._a, 0) - H.writeInt32BE(this._b, 4) - H.writeInt32BE(this._c, 8) - H.writeInt32BE(this._d, 12) - H.writeInt32BE(this._e, 16) - H.writeInt32BE(this._f, 20) - H.writeInt32BE(this._g, 24) - H.writeInt32BE(this._h, 28) - - return H -} - -module.exports = Sha256 - -},{"./hash":41,"inherits":21,"safe-buffer":40}],47:[function(require,module,exports){ -var inherits = require('inherits') -var SHA512 = require('./sha512') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var W = new Array(160) - -function Sha384 () { - this.init() - this._w = W - - Hash.call(this, 128, 112) -} - -inherits(Sha384, SHA512) - -Sha384.prototype.init = function () { - this._ah = 0xcbbb9d5d - this._bh = 0x629a292a - this._ch = 0x9159015a - this._dh = 0x152fecd8 - this._eh = 0x67332667 - this._fh = 0x8eb44a87 - this._gh = 0xdb0c2e0d - this._hh = 0x47b5481d - - this._al = 0xc1059ed8 - this._bl = 0x367cd507 - this._cl = 0x3070dd17 - this._dl = 0xf70e5939 - this._el = 0xffc00b31 - this._fl = 0x68581511 - this._gl = 0x64f98fa7 - this._hl = 0xbefa4fa4 - - return this -} - -Sha384.prototype._hash = function () { - var H = Buffer.allocUnsafe(48) - - function writeInt64BE (h, l, offset) { - H.writeInt32BE(h, offset) - H.writeInt32BE(l, offset + 4) - } - - writeInt64BE(this._ah, this._al, 0) - writeInt64BE(this._bh, this._bl, 8) - writeInt64BE(this._ch, this._cl, 16) - writeInt64BE(this._dh, this._dl, 24) - writeInt64BE(this._eh, this._el, 32) - writeInt64BE(this._fh, this._fl, 40) - - return H -} - -module.exports = Sha384 - -},{"./hash":41,"./sha512":48,"inherits":21,"safe-buffer":40}],48:[function(require,module,exports){ -var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var K = [ - 0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd, - 0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc, - 0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019, - 0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118, - 0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe, - 0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2, - 0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1, - 0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694, - 0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3, - 0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65, - 0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483, - 0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5, - 0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210, - 0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4, - 0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725, - 0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70, - 0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926, - 0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df, - 0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8, - 0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b, - 0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001, - 0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30, - 0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910, - 0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8, - 0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53, - 0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8, - 0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb, - 0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3, - 0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60, - 0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec, - 0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9, - 0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b, - 0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207, - 0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178, - 0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6, - 0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b, - 0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493, - 0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c, - 0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a, - 0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817 -] - -var W = new Array(160) - -function Sha512 () { - this.init() - this._w = W - - Hash.call(this, 128, 112) -} - -inherits(Sha512, Hash) - -Sha512.prototype.init = function () { - this._ah = 0x6a09e667 - this._bh = 0xbb67ae85 - this._ch = 0x3c6ef372 - this._dh = 0xa54ff53a - this._eh = 0x510e527f - this._fh = 0x9b05688c - this._gh = 0x1f83d9ab - this._hh = 0x5be0cd19 - - this._al = 0xf3bcc908 - this._bl = 0x84caa73b - this._cl = 0xfe94f82b - this._dl = 0x5f1d36f1 - this._el = 0xade682d1 - this._fl = 0x2b3e6c1f - this._gl = 0xfb41bd6b - this._hl = 0x137e2179 - - return this -} - -function Ch (x, y, z) { - return z ^ (x & (y ^ z)) -} - -function maj (x, y, z) { - return (x & y) | (z & (x | y)) -} - -function sigma0 (x, xl) { - return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25) -} - -function sigma1 (x, xl) { - return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23) -} - -function Gamma0 (x, xl) { - return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7) -} - -function Gamma0l (x, xl) { - return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25) -} - -function Gamma1 (x, xl) { - return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6) -} - -function Gamma1l (x, xl) { - return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26) -} - -function getCarry (a, b) { - return (a >>> 0) < (b >>> 0) ? 1 : 0 -} - -Sha512.prototype._update = function (M) { - var W = this._w - - var ah = this._ah | 0 - var bh = this._bh | 0 - var ch = this._ch | 0 - var dh = this._dh | 0 - var eh = this._eh | 0 - var fh = this._fh | 0 - var gh = this._gh | 0 - var hh = this._hh | 0 - - var al = this._al | 0 - var bl = this._bl | 0 - var cl = this._cl | 0 - var dl = this._dl | 0 - var el = this._el | 0 - var fl = this._fl | 0 - var gl = this._gl | 0 - var hl = this._hl | 0 - - for (var i = 0; i < 32; i += 2) { - W[i] = M.readInt32BE(i * 4) - W[i + 1] = M.readInt32BE(i * 4 + 4) - } - for (; i < 160; i += 2) { - var xh = W[i - 15 * 2] - var xl = W[i - 15 * 2 + 1] - var gamma0 = Gamma0(xh, xl) - var gamma0l = Gamma0l(xl, xh) - - xh = W[i - 2 * 2] - xl = W[i - 2 * 2 + 1] - var gamma1 = Gamma1(xh, xl) - var gamma1l = Gamma1l(xl, xh) - - // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16] - var Wi7h = W[i - 7 * 2] - var Wi7l = W[i - 7 * 2 + 1] - - var Wi16h = W[i - 16 * 2] - var Wi16l = W[i - 16 * 2 + 1] - - var Wil = (gamma0l + Wi7l) | 0 - var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0 - Wil = (Wil + gamma1l) | 0 - Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0 - Wil = (Wil + Wi16l) | 0 - Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0 - - W[i] = Wih - W[i + 1] = Wil - } - - for (var j = 0; j < 160; j += 2) { - Wih = W[j] - Wil = W[j + 1] - - var majh = maj(ah, bh, ch) - var majl = maj(al, bl, cl) - - var sigma0h = sigma0(ah, al) - var sigma0l = sigma0(al, ah) - var sigma1h = sigma1(eh, el) - var sigma1l = sigma1(el, eh) - - // t1 = h + sigma1 + ch + K[j] + W[j] - var Kih = K[j] - var Kil = K[j + 1] - - var chh = Ch(eh, fh, gh) - var chl = Ch(el, fl, gl) - - var t1l = (hl + sigma1l) | 0 - var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0 - t1l = (t1l + chl) | 0 - t1h = (t1h + chh + getCarry(t1l, chl)) | 0 - t1l = (t1l + Kil) | 0 - t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0 - t1l = (t1l + Wil) | 0 - t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0 - - // t2 = sigma0 + maj - var t2l = (sigma0l + majl) | 0 - var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0 - - hh = gh - hl = gl - gh = fh - gl = fl - fh = eh - fl = el - el = (dl + t1l) | 0 - eh = (dh + t1h + getCarry(el, dl)) | 0 - dh = ch - dl = cl - ch = bh - cl = bl - bh = ah - bl = al - al = (t1l + t2l) | 0 - ah = (t1h + t2h + getCarry(al, t1l)) | 0 - } - - this._al = (this._al + al) | 0 - this._bl = (this._bl + bl) | 0 - this._cl = (this._cl + cl) | 0 - this._dl = (this._dl + dl) | 0 - this._el = (this._el + el) | 0 - this._fl = (this._fl + fl) | 0 - this._gl = (this._gl + gl) | 0 - this._hl = (this._hl + hl) | 0 - - this._ah = (this._ah + ah + getCarry(this._al, al)) | 0 - this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0 - this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0 - this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0 - this._eh = (this._eh + eh + getCarry(this._el, el)) | 0 - this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0 - this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0 - this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0 -} - -Sha512.prototype._hash = function () { - var H = Buffer.allocUnsafe(64) - - function writeInt64BE (h, l, offset) { - H.writeInt32BE(h, offset) - H.writeInt32BE(l, offset + 4) - } - - writeInt64BE(this._ah, this._al, 0) - writeInt64BE(this._bh, this._bl, 8) - writeInt64BE(this._ch, this._cl, 16) - writeInt64BE(this._dh, this._dl, 24) - writeInt64BE(this._eh, this._el, 32) - writeInt64BE(this._fh, this._fl, 40) - writeInt64BE(this._gh, this._gl, 48) - writeInt64BE(this._hh, this._hl, 56) - - return H -} - -module.exports = Sha512 - -},{"./hash":41,"inherits":21,"safe-buffer":40}],49:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -module.exports = Stream; - -var EE = require('events').EventEmitter; -var inherits = require('inherits'); - -inherits(Stream, EE); -Stream.Readable = require('readable-stream/readable.js'); -Stream.Writable = require('readable-stream/writable.js'); -Stream.Duplex = require('readable-stream/duplex.js'); -Stream.Transform = require('readable-stream/transform.js'); -Stream.PassThrough = require('readable-stream/passthrough.js'); - -// Backwards-compat with node 0.4.x -Stream.Stream = Stream; - - - -// old-style streams. Note that the pipe method (the only relevant -// part of this class) is overridden in the Readable class. - -function Stream() { - EE.call(this); -} - -Stream.prototype.pipe = function(dest, options) { - var source = this; - - function ondata(chunk) { - if (dest.writable) { - if (false === dest.write(chunk) && source.pause) { - source.pause(); - } - } - } - - source.on('data', ondata); - - function ondrain() { - if (source.readable && source.resume) { - source.resume(); - } - } - - dest.on('drain', ondrain); - - // If the 'end' option is not supplied, dest.end() will be called when - // source gets the 'end' or 'close' events. Only dest.end() once. - if (!dest._isStdio && (!options || options.end !== false)) { - source.on('end', onend); - source.on('close', onclose); - } - - var didOnEnd = false; - function onend() { - if (didOnEnd) return; - didOnEnd = true; - - dest.end(); - } - - - function onclose() { - if (didOnEnd) return; - didOnEnd = true; - - if (typeof dest.destroy === 'function') dest.destroy(); - } - - // don't leave dangling pipes when there are errors. - function onerror(er) { - cleanup(); - if (EE.listenerCount(this, 'error') === 0) { - throw er; // Unhandled stream error in pipe. - } - } - - source.on('error', onerror); - dest.on('error', onerror); - - // remove all the event listeners that were added. - function cleanup() { - source.removeListener('data', ondata); - dest.removeListener('drain', ondrain); - - source.removeListener('end', onend); - source.removeListener('close', onclose); - - source.removeListener('error', onerror); - dest.removeListener('error', onerror); - - source.removeListener('end', cleanup); - source.removeListener('close', cleanup); - - dest.removeListener('close', cleanup); - } - - source.on('end', cleanup); - source.on('close', cleanup); - - dest.on('close', cleanup); - - dest.emit('pipe', source); - - // Allow for unix-like usage: A.pipe(B).pipe(C) - return dest; -}; - -},{"events":18,"inherits":21,"readable-stream/duplex.js":26,"readable-stream/passthrough.js":35,"readable-stream/readable.js":36,"readable-stream/transform.js":37,"readable-stream/writable.js":38}],50:[function(require,module,exports){ -'use strict'; - -var Buffer = require('safe-buffer').Buffer; - -var isEncoding = Buffer.isEncoding || function (encoding) { - encoding = '' + encoding; - switch (encoding && encoding.toLowerCase()) { - case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw': - return true; - default: - return false; - } -}; - -function _normalizeEncoding(enc) { - if (!enc) return 'utf8'; - var retried; - while (true) { - switch (enc) { - case 'utf8': - case 'utf-8': - return 'utf8'; - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return 'utf16le'; - case 'latin1': - case 'binary': - return 'latin1'; - case 'base64': - case 'ascii': - case 'hex': - return enc; - default: - if (retried) return; // undefined - enc = ('' + enc).toLowerCase(); - retried = true; - } - } -}; - -// Do not cache `Buffer.isEncoding` when checking encoding names as some -// modules monkey-patch it to support additional encodings -function normalizeEncoding(enc) { - var nenc = _normalizeEncoding(enc); - if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc); - return nenc || enc; -} - -// StringDecoder provides an interface for efficiently splitting a series of -// buffers into a series of JS strings without breaking apart multi-byte -// characters. -exports.StringDecoder = StringDecoder; -function StringDecoder(encoding) { - this.encoding = normalizeEncoding(encoding); - var nb; - switch (this.encoding) { - case 'utf16le': - this.text = utf16Text; - this.end = utf16End; - nb = 4; - break; - case 'utf8': - this.fillLast = utf8FillLast; - nb = 4; - break; - case 'base64': - this.text = base64Text; - this.end = base64End; - nb = 3; - break; - default: - this.write = simpleWrite; - this.end = simpleEnd; - return; - } - this.lastNeed = 0; - this.lastTotal = 0; - this.lastChar = Buffer.allocUnsafe(nb); -} - -StringDecoder.prototype.write = function (buf) { - if (buf.length === 0) return ''; - var r; - var i; - if (this.lastNeed) { - r = this.fillLast(buf); - if (r === undefined) return ''; - i = this.lastNeed; - this.lastNeed = 0; - } else { - i = 0; - } - if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i); - return r || ''; -}; - -StringDecoder.prototype.end = utf8End; - -// Returns only complete characters in a Buffer -StringDecoder.prototype.text = utf8Text; - -// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer -StringDecoder.prototype.fillLast = function (buf) { - if (this.lastNeed <= buf.length) { - buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed); - return this.lastChar.toString(this.encoding, 0, this.lastTotal); - } - buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length); - this.lastNeed -= buf.length; -}; - -// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a -// continuation byte. -function utf8CheckByte(byte) { - if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4; - return -1; -} - -// Checks at most 3 bytes at the end of a Buffer in order to detect an -// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4) -// needed to complete the UTF-8 character (if applicable) are returned. -function utf8CheckIncomplete(self, buf, i) { - var j = buf.length - 1; - if (j < i) return 0; - var nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) self.lastNeed = nb - 1; - return nb; - } - if (--j < i) return 0; - nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) self.lastNeed = nb - 2; - return nb; - } - if (--j < i) return 0; - nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) { - if (nb === 2) nb = 0;else self.lastNeed = nb - 3; - } - return nb; - } - return 0; -} - -// Validates as many continuation bytes for a multi-byte UTF-8 character as -// needed or are available. If we see a non-continuation byte where we expect -// one, we "replace" the validated continuation bytes we've seen so far with -// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding -// behavior. The continuation byte check is included three times in the case -// where all of the continuation bytes for a character exist in the same buffer. -// It is also done this way as a slight performance increase instead of using a -// loop. -function utf8CheckExtraBytes(self, buf, p) { - if ((buf[0] & 0xC0) !== 0x80) { - self.lastNeed = 0; - return '\ufffd'.repeat(p); - } - if (self.lastNeed > 1 && buf.length > 1) { - if ((buf[1] & 0xC0) !== 0x80) { - self.lastNeed = 1; - return '\ufffd'.repeat(p + 1); - } - if (self.lastNeed > 2 && buf.length > 2) { - if ((buf[2] & 0xC0) !== 0x80) { - self.lastNeed = 2; - return '\ufffd'.repeat(p + 2); - } - } - } -} - -// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer. -function utf8FillLast(buf) { - var p = this.lastTotal - this.lastNeed; - var r = utf8CheckExtraBytes(this, buf, p); - if (r !== undefined) return r; - if (this.lastNeed <= buf.length) { - buf.copy(this.lastChar, p, 0, this.lastNeed); - return this.lastChar.toString(this.encoding, 0, this.lastTotal); - } - buf.copy(this.lastChar, p, 0, buf.length); - this.lastNeed -= buf.length; -} - -// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a -// partial character, the character's bytes are buffered until the required -// number of bytes are available. -function utf8Text(buf, i) { - var total = utf8CheckIncomplete(this, buf, i); - if (!this.lastNeed) return buf.toString('utf8', i); - this.lastTotal = total; - var end = buf.length - (total - this.lastNeed); - buf.copy(this.lastChar, 0, end); - return buf.toString('utf8', i, end); -} - -// For UTF-8, a replacement character for each buffered byte of a (partial) -// character needs to be added to the output. -function utf8End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed); - return r; -} - -// UTF-16LE typically needs two bytes per character, but even if we have an even -// number of bytes available, we need to check if we end on a leading/high -// surrogate. In that case, we need to wait for the next two bytes in order to -// decode the last character properly. -function utf16Text(buf, i) { - if ((buf.length - i) % 2 === 0) { - var r = buf.toString('utf16le', i); - if (r) { - var c = r.charCodeAt(r.length - 1); - if (c >= 0xD800 && c <= 0xDBFF) { - this.lastNeed = 2; - this.lastTotal = 4; - this.lastChar[0] = buf[buf.length - 2]; - this.lastChar[1] = buf[buf.length - 1]; - return r.slice(0, -1); - } - } - return r; - } - this.lastNeed = 1; - this.lastTotal = 2; - this.lastChar[0] = buf[buf.length - 1]; - return buf.toString('utf16le', i, buf.length - 1); -} - -// For UTF-16LE we do not explicitly append special replacement characters if we -// end on a partial character, we simply let v8 handle that. -function utf16End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) { - var end = this.lastTotal - this.lastNeed; - return r + this.lastChar.toString('utf16le', 0, end); - } - return r; -} - -function base64Text(buf, i) { - var n = (buf.length - i) % 3; - if (n === 0) return buf.toString('base64', i); - this.lastNeed = 3 - n; - this.lastTotal = 3; - if (n === 1) { - this.lastChar[0] = buf[buf.length - 1]; - } else { - this.lastChar[0] = buf[buf.length - 2]; - this.lastChar[1] = buf[buf.length - 1]; - } - return buf.toString('base64', i, buf.length - n); -} - -function base64End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed); - return r; -} - -// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex) -function simpleWrite(buf) { - return buf.toString(this.encoding); -} - -function simpleEnd(buf) { - return buf && buf.length ? this.write(buf) : ''; -} -},{"safe-buffer":40}],51:[function(require,module,exports){ -(function (global){ - -/** - * Module exports. - */ - -module.exports = deprecate; - -/** - * Mark that a method should not be used. - * Returns a modified function which warns once by default. - * - * If `localStorage.noDeprecation = true` is set, then it is a no-op. - * - * If `localStorage.throwDeprecation = true` is set, then deprecated functions - * will throw an Error when invoked. - * - * If `localStorage.traceDeprecation = true` is set, then deprecated functions - * will invoke `console.trace()` instead of `console.error()`. - * - * @param {Function} fn - the function to deprecate - * @param {String} msg - the string to print to the console when `fn` is invoked - * @returns {Function} a new "deprecated" version of `fn` - * @api public - */ - -function deprecate (fn, msg) { - if (config('noDeprecation')) { - return fn; - } - - var warned = false; - function deprecated() { - if (!warned) { - if (config('throwDeprecation')) { - throw new Error(msg); - } else if (config('traceDeprecation')) { - console.trace(msg); - } else { - console.warn(msg); - } - warned = true; - } - return fn.apply(this, arguments); - } - - return deprecated; -} - -/** - * Checks `localStorage` for boolean values for the given `name`. - * - * @param {String} name - * @returns {Boolean} - * @api private - */ - -function config (name) { - // accessing global.localStorage can trigger a DOMException in sandboxed iframes - try { - if (!global.localStorage) return false; - } catch (_) { - return false; - } - var val = global.localStorage[name]; - if (null == val) return false; - return String(val).toLowerCase() === 'true'; -} - -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],52:[function(require,module,exports){ -(function (Buffer){ -/*** - * @license - * https://github.com/bitcoincashjs/bchaddr - * Copyright (c) 2018 Emilio Almansi - * Distributed under the MIT software license, see the accompanying - * file LICENSE or http://www.opensource.org/licenses/mit-license.php. - */ - -var bs58check = require('bs58check') -var cashaddr = require('cashaddrjs') - -/** - * General purpose Bitcoin Cash address detection and translation.
- * Supports all major Bitcoin Cash address formats.
- * Currently: - *
    - *
  • Legacy format
    • - *
  • Bitpay format
    • - *
  • Cashaddr format
    • - *
- * @module bchaddr - */ - -/** - * @static - * Supported Bitcoin Cash address formats. - */ -var Format = {} -Format.Legacy = 'legacy' -Format.Bitpay = 'bitpay' -Format.Cashaddr = 'cashaddr' - -/** - * @static - * Supported networks. - */ -var Network = {} -Network.Mainnet = 'mainnet' -Network.Testnet = 'testnet' - -/** - * @static - * Supported address types. - */ -var Type = {} -Type.P2PKH = 'p2pkh' -Type.P2SH = 'p2sh' - -/** - * Detects what is the given address' format. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {string} - * @throws {InvalidAddressError} - */ -function detectAddressFormat (address) { - return decodeAddress(address).format -} - -/** - * Detects what is the given address' network. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {string} - * @throws {InvalidAddressError} - */ -function detectAddressNetwork (address) { - return decodeAddress(address).network -} - -/** - * Detects what is the given address' type. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {string} - * @throws {InvalidAddressError} - */ -function detectAddressType (address) { - return decodeAddress(address).type -} - -/** - * Translates the given address into legacy format. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {string} - * @throws {InvalidAddressError} - */ -function toLegacyAddress (address) { - var decoded = decodeAddress(address) - if (decoded.format === Format.Legacy) { - return address - } - return encodeAsLegacy(decoded) -} - -/** - * Translates the given address into bitpay format. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {string} - * @throws {InvalidAddressError} - */ -function toBitpayAddress (address) { - var decoded = decodeAddress(address) - if (decoded.format === Format.Bitpay) { - return address - } - return encodeAsBitpay(decoded) -} - -/** - * Translates the given address into cashaddr format. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {string} - * @throws {InvalidAddressError} - */ -function toCashAddress (address) { - var decoded = decodeAddress(address) - return encodeAsCashaddr(decoded) -} - -/** - * Translates the given address into SLP format. - * @static - * @param {string} address - A valid SLP address in any format. - * @return {string} - * @throws {InvalidAddressError} - */ -function toSlpAddress (address) { - var decoded = decodeAddress(address) - return encodeAsSlpaddr(decoded) -} - - - - -/** - * Version byte table for base58 formats. - * @private - */ -var VERSION_BYTE = {} -VERSION_BYTE[Format.Legacy] = {} -VERSION_BYTE[Format.Legacy][Network.Mainnet] = {} -VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH] = 0 -VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH] = 5 -VERSION_BYTE[Format.Legacy][Network.Testnet] = {} -VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH] = 111 -VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH] = 196 -VERSION_BYTE[Format.Bitpay] = {} -VERSION_BYTE[Format.Bitpay][Network.Mainnet] = {} -VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH] = 28 -VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH] = 40 -VERSION_BYTE[Format.Bitpay][Network.Testnet] = {} -VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2PKH] = 111 -VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2SH] = 196 - -/** - * Decodes the given address into its constituting hash, format, network and type. - * @private - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {object} - * @throws {InvalidAddressError} - */ -function decodeAddress (address) { - try { - return decodeBase58Address(address) - } catch (error) { - } - try { - return decodeCashAddress(address) - } catch (error) { - } - throw new InvalidAddressError() -} - -/** - * Attempts to decode the given address assuming it is a base58 address. - * @private - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {object} - * @throws {InvalidAddressError} - */ -function decodeBase58Address (address) { - try { - var payload = bs58check.decode(address) - var versionByte = payload[0] - var hash = Array.prototype.slice.call(payload, 1) - switch (versionByte) { - case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH]: - return { - hash: hash, - format: Format.Legacy, - network: Network.Mainnet, - type: Type.P2PKH - } - case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH]: - return { - hash: hash, - format: Format.Legacy, - network: Network.Mainnet, - type: Type.P2SH - } - case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH]: - return { - hash: hash, - format: Format.Legacy, - network: Network.Testnet, - type: Type.P2PKH - } - case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH]: - return { - hash: hash, - format: Format.Legacy, - network: Network.Testnet, - type: Type.P2SH - } - case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH]: - return { - hash: hash, - format: Format.Bitpay, - network: Network.Mainnet, - type: Type.P2PKH - } - case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH]: - return { - hash: hash, - format: Format.Bitpay, - network: Network.Mainnet, - type: Type.P2SH - } - } - } catch (error) { - } - throw new InvalidAddressError() -} - -/** - * Attempts to decode the given address assuming it is a cashaddr address. - * @private - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {object} - * @throws {InvalidAddressError} - */ -function decodeCashAddress (address) { - if (address.indexOf(':') !== -1) { - try { - return decodeCashAddressWithPrefix(address) - } catch (error) { - } - } else { - var prefixes = ['bitcoincash', 'bchtest', 'regtest', 'simpleledger', 'slptest'] - for (var i = 0; i < prefixes.length; ++i) { - try { - var prefix = prefixes[i] - return decodeCashAddressWithPrefix(prefix + ':' + address) - } catch (error) { - } - } - } - throw new InvalidAddressError() -} - -/** - * Attempts to decode the given address assuming it is a cashaddr address with explicit prefix. - * @private - * @param {string} address - A valid Bitcoin Cash address in any format. - * @return {object} - * @throws {InvalidAddressError} - */ -function decodeCashAddressWithPrefix (address) { - try { - var decoded = cashaddr.decode(address) - var hash = Array.prototype.slice.call(decoded.hash, 0) - var type = decoded.type === 'P2PKH' ? Type.P2PKH : Type.P2SH - switch (decoded.prefix) { - case 'bitcoincash': - case 'simpleledger': - return { - hash: hash, - format: Format.Cashaddr, - network: Network.Mainnet, - type: type - } - case 'bchtest': - case 'slptest': - case 'regtest': - return { - hash: hash, - format: Format.Cashaddr, - network: Network.Testnet, - type: type - } - } - } catch (error) { - } - throw new InvalidAddressError() -} - -/** - * Encodes the given decoded address into legacy format. - * @private - * @param {object} decoded - * @returns {string} - */ -function encodeAsLegacy (decoded) { - var versionByte = VERSION_BYTE[Format.Legacy][decoded.network][decoded.type] - var buffer = Buffer.alloc(1 + decoded.hash.length) - buffer[0] = versionByte - buffer.set(decoded.hash, 1) - return bs58check.encode(buffer) -} - -/** - * Encodes the given decoded address into bitpay format. - * @private - * @param {object} decoded - * @returns {string} - */ -function encodeAsBitpay (decoded) { - var versionByte = VERSION_BYTE[Format.Bitpay][decoded.network][decoded.type] - var buffer = Buffer.alloc(1 + decoded.hash.length) - buffer[0] = versionByte - buffer.set(decoded.hash, 1) - return bs58check.encode(buffer) -} - -/** - * Encodes the given decoded address into cashaddr format. - * @private - * @param {object} decoded - * @returns {string} - */ -function encodeAsCashaddr (decoded) { - var prefix = decoded.network === Network.Mainnet ? 'bitcoincash' : 'bchtest' - var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH' - var hash = Uint8Array.from(decoded.hash) - return cashaddr.encode(prefix, type, hash) -} - - /** - * Encodes the given decoded address into slp addr format. - * @private - * @param {object} decoded - * @returns {string} - */ - function encodeAsSlpaddr (decoded) { - var prefix = decoded.network === Network.Mainnet ? 'simpleledger' : 'slptest' - var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH' - var hash = Uint8Array.from(decoded.hash) - return cashaddr.encode(prefix, type, hash) - } - -/** - * Returns a boolean indicating whether the address is in legacy format. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @returns {boolean} - * @throws {InvalidAddressError} - */ -function isLegacyAddress (address) { - return detectAddressFormat(address) === Format.Legacy -} - -/** - * Returns a boolean indicating whether the address is in bitpay format. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @returns {boolean} - * @throws {InvalidAddressError} - */ -function isBitpayAddress (address) { - return detectAddressFormat(address) === Format.Bitpay -} - -/** - * Returns a boolean indicating whether the address is in cashaddr format. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @returns {boolean} - * @throws {InvalidAddressError} - */ -function isCashAddress (address) { - return detectAddressFormat(address) === Format.Cashaddr -} - -/** - * Returns a boolean indicating whether the address is a mainnet address. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @returns {boolean} - * @throws {InvalidAddressError} - */ -function isMainnetAddress (address) { - return detectAddressNetwork(address) === Network.Mainnet -} - -/** - * Returns a boolean indicating whether the address is a testnet address. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @returns {boolean} - * @throws {InvalidAddressError} - */ -function isTestnetAddress (address) { - return detectAddressNetwork(address) === Network.Testnet -} - -/** - * Returns a boolean indicating whether the address is a p2pkh address. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @returns {boolean} - * @throws {InvalidAddressError} - */ -function isP2PKHAddress (address) { - return detectAddressType(address) === Type.P2PKH -} - -/** - * Returns a boolean indicating whether the address is a p2sh address. - * @static - * @param {string} address - A valid Bitcoin Cash address in any format. - * @returns {boolean} - * @throws {InvalidAddressError} - */ -function isP2SHAddress (address) { - return detectAddressType(address) === Type.P2SH -} - -/** - * Error thrown when the address given as input is not a valid Bitcoin Cash address. - * @constructor - * InvalidAddressError - */ -function InvalidAddressError () { - var error = new Error() - this.name = error.name = 'InvalidAddressError' - this.message = error.message = 'Received an invalid Bitcoin Cash address as input.' - this.stack = error.stack -} - -InvalidAddressError.prototype = Object.create(Error.prototype) - -module.exports = { - Format: Format, - Network: Network, - Type: Type, - detectAddressFormat: detectAddressFormat, - detectAddressNetwork: detectAddressNetwork, - detectAddressType: detectAddressType, - toLegacyAddress: toLegacyAddress, - toBitpayAddress: toBitpayAddress, - toCashAddress: toCashAddress, - toSlpAddress: toSlpAddress, - isLegacyAddress: isLegacyAddress, - isBitpayAddress: isBitpayAddress, - isCashAddress: isCashAddress, - isMainnetAddress: isMainnetAddress, - isTestnetAddress: isTestnetAddress, - isP2PKHAddress: isP2PKHAddress, - isP2SHAddress: isP2SHAddress, - InvalidAddressError: InvalidAddressError -} - -}).call(this,require("buffer").Buffer) -},{"bs58check":7,"buffer":8,"cashaddrjs":10}]},{},[52])(52) -}); diff --git a/src/js/biginteger.js b/src/js/biginteger.js deleted file mode 100644 index 3f56d18..0000000 --- a/src/js/biginteger.js +++ /dev/null @@ -1,1620 +0,0 @@ -/* - JavaScript BigInteger library version 0.9.1 - http://silentmatt.com/biginteger/ - - Copyright (c) 2009 Matthew Crumley - Copyright (c) 2010,2011 by John Tobey - Licensed under the MIT license. - - Support for arbitrary internal representation base was added by - Vitaly Magerya. -*/ - -/* - File: biginteger.js - - Exports: - - -*/ -(function(exports) { -"use strict"; -/* - Class: BigInteger - An arbitrarily-large integer. - - objects should be considered immutable. None of the "built-in" - methods modify *this* or their arguments. All properties should be - considered private. - - All the methods of instances can be called "statically". The - static versions are convenient if you don't already have a - object. - - As an example, these calls are equivalent. - - > BigInteger(4).multiply(5); // returns BigInteger(20); - > BigInteger.multiply(4, 5); // returns BigInteger(20); - - > var a = 42; - > var a = BigInteger.toJSValue("0b101010"); // Not completely useless... -*/ - -var CONSTRUCT = {}; // Unique token to call "private" version of constructor - -/* - Constructor: BigInteger() - Convert a value to a . - - Although is the constructor for objects, it is - best not to call it as a constructor. If *n* is a object, it is - simply returned as-is. Otherwise, is equivalent to - without a radix argument. - - > var n0 = BigInteger(); // Same as - > var n1 = BigInteger("123"); // Create a new with value 123 - > var n2 = BigInteger(123); // Create a new with value 123 - > var n3 = BigInteger(n2); // Return n2, unchanged - - The constructor form only takes an array and a sign. *n* must be an - array of numbers in little-endian order, where each digit is between 0 - and BigInteger.base. The second parameter sets the sign: -1 for - negative, +1 for positive, or 0 for zero. The array is *not copied and - may be modified*. If the array contains only zeros, the sign parameter - is ignored and is forced to zero. - - > new BigInteger([5], -1): create a new BigInteger with value -5 - - Parameters: - - n - Value to convert to a . - - Returns: - - A value. - - See Also: - - , -*/ -function BigInteger(n, s, token) { - if (token !== CONSTRUCT) { - if (n instanceof BigInteger) { - return n; - } - else if (typeof n === "undefined") { - return ZERO; - } - return BigInteger.parse(n); - } - - n = n || []; // Provide the nullary constructor for subclasses. - while (n.length && !n[n.length - 1]) { - --n.length; - } - this._d = n; - this._s = n.length ? (s || 1) : 0; -} - -BigInteger._construct = function(n, s) { - return new BigInteger(n, s, CONSTRUCT); -}; - -// Base-10 speedup hacks in parse, toString, exp10 and log functions -// require base to be a power of 10. 10^7 is the largest such power -// that won't cause a precision loss when digits are multiplied. -var BigInteger_base = 10000000; -var BigInteger_base_log10 = 7; - -BigInteger.base = BigInteger_base; -BigInteger.base_log10 = BigInteger_base_log10; - -var ZERO = new BigInteger([], 0, CONSTRUCT); -// Constant: ZERO -// 0. -BigInteger.ZERO = ZERO; - -var ONE = new BigInteger([1], 1, CONSTRUCT); -// Constant: ONE -// 1. -BigInteger.ONE = ONE; - -var M_ONE = new BigInteger(ONE._d, -1, CONSTRUCT); -// Constant: M_ONE -// -1. -BigInteger.M_ONE = M_ONE; - -// Constant: _0 -// Shortcut for . -BigInteger._0 = ZERO; - -// Constant: _1 -// Shortcut for . -BigInteger._1 = ONE; - -/* - Constant: small - Array of from 0 to 36. - - These are used internally for parsing, but useful when you need a "small" - . - - See Also: - - , , <_0>, <_1> -*/ -BigInteger.small = [ - ZERO, - ONE, - /* Assuming BigInteger_base > 36 */ - new BigInteger( [2], 1, CONSTRUCT), - new BigInteger( [3], 1, CONSTRUCT), - new BigInteger( [4], 1, CONSTRUCT), - new BigInteger( [5], 1, CONSTRUCT), - new BigInteger( [6], 1, CONSTRUCT), - new BigInteger( [7], 1, CONSTRUCT), - new BigInteger( [8], 1, CONSTRUCT), - new BigInteger( [9], 1, CONSTRUCT), - new BigInteger([10], 1, CONSTRUCT), - new BigInteger([11], 1, CONSTRUCT), - new BigInteger([12], 1, CONSTRUCT), - new BigInteger([13], 1, CONSTRUCT), - new BigInteger([14], 1, CONSTRUCT), - new BigInteger([15], 1, CONSTRUCT), - new BigInteger([16], 1, CONSTRUCT), - new BigInteger([17], 1, CONSTRUCT), - new BigInteger([18], 1, CONSTRUCT), - new BigInteger([19], 1, CONSTRUCT), - new BigInteger([20], 1, CONSTRUCT), - new BigInteger([21], 1, CONSTRUCT), - new BigInteger([22], 1, CONSTRUCT), - new BigInteger([23], 1, CONSTRUCT), - new BigInteger([24], 1, CONSTRUCT), - new BigInteger([25], 1, CONSTRUCT), - new BigInteger([26], 1, CONSTRUCT), - new BigInteger([27], 1, CONSTRUCT), - new BigInteger([28], 1, CONSTRUCT), - new BigInteger([29], 1, CONSTRUCT), - new BigInteger([30], 1, CONSTRUCT), - new BigInteger([31], 1, CONSTRUCT), - new BigInteger([32], 1, CONSTRUCT), - new BigInteger([33], 1, CONSTRUCT), - new BigInteger([34], 1, CONSTRUCT), - new BigInteger([35], 1, CONSTRUCT), - new BigInteger([36], 1, CONSTRUCT) -]; - -// Used for parsing/radix conversion -BigInteger.digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ".split(""); - -/* - Method: toString - Convert a to a string. - - When *base* is greater than 10, letters are upper case. - - Parameters: - - base - Optional base to represent the number in (default is base 10). - Must be between 2 and 36 inclusive, or an Error will be thrown. - - Returns: - - The string representation of the . -*/ -BigInteger.prototype.toString = function(base) { - base = +base || 10; - if (base < 2 || base > 36) { - throw new Error("illegal radix " + base + "."); - } - if (this._s === 0) { - return "0"; - } - if (base === 10) { - var str = this._s < 0 ? "-" : ""; - str += this._d[this._d.length - 1].toString(); - for (var i = this._d.length - 2; i >= 0; i--) { - var group = this._d[i].toString(); - while (group.length < BigInteger_base_log10) group = '0' + group; - str += group; - } - return str; - } - else { - var numerals = BigInteger.digits; - base = BigInteger.small[base]; - var sign = this._s; - - var n = this.abs(); - var digits = []; - var digit; - - while (n._s !== 0) { - var divmod = n.divRem(base); - n = divmod[0]; - digit = divmod[1]; - // TODO: This could be changed to unshift instead of reversing at the end. - // Benchmark both to compare speeds. - digits.push(numerals[digit.valueOf()]); - } - return (sign < 0 ? "-" : "") + digits.reverse().join(""); - } -}; - -// Verify strings for parsing -BigInteger.radixRegex = [ - /^$/, - /^$/, - /^[01]*$/, - /^[012]*$/, - /^[0-3]*$/, - /^[0-4]*$/, - /^[0-5]*$/, - /^[0-6]*$/, - /^[0-7]*$/, - /^[0-8]*$/, - /^[0-9]*$/, - /^[0-9aA]*$/, - /^[0-9abAB]*$/, - /^[0-9abcABC]*$/, - /^[0-9a-dA-D]*$/, - /^[0-9a-eA-E]*$/, - /^[0-9a-fA-F]*$/, - /^[0-9a-gA-G]*$/, - /^[0-9a-hA-H]*$/, - /^[0-9a-iA-I]*$/, - /^[0-9a-jA-J]*$/, - /^[0-9a-kA-K]*$/, - /^[0-9a-lA-L]*$/, - /^[0-9a-mA-M]*$/, - /^[0-9a-nA-N]*$/, - /^[0-9a-oA-O]*$/, - /^[0-9a-pA-P]*$/, - /^[0-9a-qA-Q]*$/, - /^[0-9a-rA-R]*$/, - /^[0-9a-sA-S]*$/, - /^[0-9a-tA-T]*$/, - /^[0-9a-uA-U]*$/, - /^[0-9a-vA-V]*$/, - /^[0-9a-wA-W]*$/, - /^[0-9a-xA-X]*$/, - /^[0-9a-yA-Y]*$/, - /^[0-9a-zA-Z]*$/ -]; - -/* - Function: parse - Parse a string into a . - - *base* is optional but, if provided, must be from 2 to 36 inclusive. If - *base* is not provided, it will be guessed based on the leading characters - of *s* as follows: - - - "0x" or "0X": *base* = 16 - - "0c" or "0C": *base* = 8 - - "0b" or "0B": *base* = 2 - - else: *base* = 10 - - If no base is provided, or *base* is 10, the number can be in exponential - form. For example, these are all valid: - - > BigInteger.parse("1e9"); // Same as "1000000000" - > BigInteger.parse("1.234*10^3"); // Same as 1234 - > BigInteger.parse("56789 * 10 ** -2"); // Same as 567 - - If any characters fall outside the range defined by the radix, an exception - will be thrown. - - Parameters: - - s - The string to parse. - base - Optional radix (default is to guess based on *s*). - - Returns: - - a instance. -*/ -BigInteger.parse = function(s, base) { - // Expands a number in exponential form to decimal form. - // expandExponential("-13.441*10^5") === "1344100"; - // expandExponential("1.12300e-1") === "0.112300"; - // expandExponential(1000000000000000000000000000000) === "1000000000000000000000000000000"; - function expandExponential(str) { - str = str.replace(/\s*[*xX]\s*10\s*(\^|\*\*)\s*/, "e"); - - return str.replace(/^([+\-])?(\d+)\.?(\d*)[eE]([+\-]?\d+)$/, function(x, s, n, f, c) { - c = +c; - var l = c < 0; - var i = n.length + c; - x = (l ? n : f).length; - c = ((c = Math.abs(c)) >= x ? c - x + l : 0); - var z = (new Array(c + 1)).join("0"); - var r = n + f; - return (s || "") + (l ? r = z + r : r += z).substr(0, i += l ? z.length : 0) + (i < r.length ? "." + r.substr(i) : ""); - }); - } - - s = s.toString(); - if (typeof base === "undefined" || +base === 10) { - s = expandExponential(s); - } - - var prefixRE; - if (typeof base === "undefined") { - prefixRE = '0[xcb]'; - } - else if (base == 16) { - prefixRE = '0x'; - } - else if (base == 8) { - prefixRE = '0c'; - } - else if (base == 2) { - prefixRE = '0b'; - } - else { - prefixRE = ''; - } - var parts = new RegExp('^([+\\-]?)(' + prefixRE + ')?([0-9a-z]*)(?:\\.\\d*)?$', 'i').exec(s); - if (parts) { - var sign = parts[1] || "+"; - var baseSection = parts[2] || ""; - var digits = parts[3] || ""; - - if (typeof base === "undefined") { - // Guess base - if (baseSection === "0x" || baseSection === "0X") { // Hex - base = 16; - } - else if (baseSection === "0c" || baseSection === "0C") { // Octal - base = 8; - } - else if (baseSection === "0b" || baseSection === "0B") { // Binary - base = 2; - } - else { - base = 10; - } - } - else if (base < 2 || base > 36) { - throw new Error("Illegal radix " + base + "."); - } - - base = +base; - - // Check for digits outside the range - if (!(BigInteger.radixRegex[base].test(digits))) { - throw new Error("Bad digit for radix " + base); - } - - // Strip leading zeros, and convert to array - digits = digits.replace(/^0+/, "").split(""); - if (digits.length === 0) { - return ZERO; - } - - // Get the sign (we know it's not zero) - sign = (sign === "-") ? -1 : 1; - - // Optimize 10 - if (base == 10) { - var d = []; - while (digits.length >= BigInteger_base_log10) { - d.push(parseInt(digits.splice(digits.length-BigInteger.base_log10, BigInteger.base_log10).join(''), 10)); - } - d.push(parseInt(digits.join(''), 10)); - return new BigInteger(d, sign, CONSTRUCT); - } - - // Do the conversion - var d = ZERO; - base = BigInteger.small[base]; - var small = BigInteger.small; - for (var i = 0; i < digits.length; i++) { - d = d.multiply(base).add(small[parseInt(digits[i], 36)]); - } - return new BigInteger(d._d, sign, CONSTRUCT); - } - else { - throw new Error("Invalid BigInteger format: " + s); - } -}; - -/* - Function: add - Add two . - - Parameters: - - n - The number to add to *this*. Will be converted to a . - - Returns: - - The numbers added together. - - See Also: - - , , , -*/ -BigInteger.prototype.add = function(n) { - if (this._s === 0) { - return BigInteger(n); - } - - n = BigInteger(n); - if (n._s === 0) { - return this; - } - if (this._s !== n._s) { - n = n.negate(); - return this.subtract(n); - } - - var a = this._d; - var b = n._d; - var al = a.length; - var bl = b.length; - var sum = new Array(Math.max(al, bl) + 1); - var size = Math.min(al, bl); - var carry = 0; - var digit; - - for (var i = 0; i < size; i++) { - digit = a[i] + b[i] + carry; - sum[i] = digit % BigInteger_base; - carry = (digit / BigInteger_base) | 0; - } - if (bl > al) { - a = b; - al = bl; - } - for (i = size; carry && i < al; i++) { - digit = a[i] + carry; - sum[i] = digit % BigInteger_base; - carry = (digit / BigInteger_base) | 0; - } - if (carry) { - sum[i] = carry; - } - - for ( ; i < al; i++) { - sum[i] = a[i]; - } - - return new BigInteger(sum, this._s, CONSTRUCT); -}; - -/* - Function: negate - Get the additive inverse of a . - - Returns: - - A with the same magnatude, but with the opposite sign. - - See Also: - - -*/ -BigInteger.prototype.negate = function() { - return new BigInteger(this._d, (-this._s) | 0, CONSTRUCT); -}; - -/* - Function: abs - Get the absolute value of a . - - Returns: - - A with the same magnatude, but always positive (or zero). - - See Also: - - -*/ -BigInteger.prototype.abs = function() { - return (this._s < 0) ? this.negate() : this; -}; - -/* - Function: subtract - Subtract two . - - Parameters: - - n - The number to subtract from *this*. Will be converted to a . - - Returns: - - The *n* subtracted from *this*. - - See Also: - - , , , -*/ -BigInteger.prototype.subtract = function(n) { - if (this._s === 0) { - return BigInteger(n).negate(); - } - - n = BigInteger(n); - if (n._s === 0) { - return this; - } - if (this._s !== n._s) { - n = n.negate(); - return this.add(n); - } - - var m = this; - // negative - negative => -|a| - -|b| => -|a| + |b| => |b| - |a| - if (this._s < 0) { - m = new BigInteger(n._d, 1, CONSTRUCT); - n = new BigInteger(this._d, 1, CONSTRUCT); - } - - // Both are positive => a - b - var sign = m.compareAbs(n); - if (sign === 0) { - return ZERO; - } - else if (sign < 0) { - // swap m and n - var t = n; - n = m; - m = t; - } - - // a > b - var a = m._d; - var b = n._d; - var al = a.length; - var bl = b.length; - var diff = new Array(al); // al >= bl since a > b - var borrow = 0; - var i; - var digit; - - for (i = 0; i < bl; i++) { - digit = a[i] - borrow - b[i]; - if (digit < 0) { - digit += BigInteger_base; - borrow = 1; - } - else { - borrow = 0; - } - diff[i] = digit; - } - for (i = bl; i < al; i++) { - digit = a[i] - borrow; - if (digit < 0) { - digit += BigInteger_base; - } - else { - diff[i++] = digit; - break; - } - diff[i] = digit; - } - for ( ; i < al; i++) { - diff[i] = a[i]; - } - - return new BigInteger(diff, sign, CONSTRUCT); -}; - -(function() { - function addOne(n, sign) { - var a = n._d; - var sum = a.slice(); - var carry = true; - var i = 0; - - while (true) { - var digit = (a[i] || 0) + 1; - sum[i] = digit % BigInteger_base; - if (digit <= BigInteger_base - 1) { - break; - } - ++i; - } - - return new BigInteger(sum, sign, CONSTRUCT); - } - - function subtractOne(n, sign) { - var a = n._d; - var sum = a.slice(); - var borrow = true; - var i = 0; - - while (true) { - var digit = (a[i] || 0) - 1; - if (digit < 0) { - sum[i] = digit + BigInteger_base; - } - else { - sum[i] = digit; - break; - } - ++i; - } - - return new BigInteger(sum, sign, CONSTRUCT); - } - - /* - Function: next - Get the next (add one). - - Returns: - - *this* + 1. - - See Also: - - , - */ - BigInteger.prototype.next = function() { - switch (this._s) { - case 0: - return ONE; - case -1: - return subtractOne(this, -1); - // case 1: - default: - return addOne(this, 1); - } - }; - - /* - Function: prev - Get the previous (subtract one). - - Returns: - - *this* - 1. - - See Also: - - , - */ - BigInteger.prototype.prev = function() { - switch (this._s) { - case 0: - return M_ONE; - case -1: - return addOne(this, -1); - // case 1: - default: - return subtractOne(this, 1); - } - }; -})(); - -/* - Function: compareAbs - Compare the absolute value of two . - - Calling is faster than calling twice, then . - - Parameters: - - n - The number to compare to *this*. Will be converted to a . - - Returns: - - -1, 0, or +1 if *|this|* is less than, equal to, or greater than *|n|*. - - See Also: - - , -*/ -BigInteger.prototype.compareAbs = function(n) { - if (this === n) { - return 0; - } - - if (!(n instanceof BigInteger)) { - if (!isFinite(n)) { - return(isNaN(n) ? n : -1); - } - n = BigInteger(n); - } - - if (this._s === 0) { - return (n._s !== 0) ? -1 : 0; - } - if (n._s === 0) { - return 1; - } - - var l = this._d.length; - var nl = n._d.length; - if (l < nl) { - return -1; - } - else if (l > nl) { - return 1; - } - - var a = this._d; - var b = n._d; - for (var i = l-1; i >= 0; i--) { - if (a[i] !== b[i]) { - return a[i] < b[i] ? -1 : 1; - } - } - - return 0; -}; - -/* - Function: compare - Compare two . - - Parameters: - - n - The number to compare to *this*. Will be converted to a . - - Returns: - - -1, 0, or +1 if *this* is less than, equal to, or greater than *n*. - - See Also: - - , , , -*/ -BigInteger.prototype.compare = function(n) { - if (this === n) { - return 0; - } - - n = BigInteger(n); - - if (this._s === 0) { - return -n._s; - } - - if (this._s === n._s) { // both positive or both negative - var cmp = this.compareAbs(n); - return cmp * this._s; - } - else { - return this._s; - } -}; - -/* - Function: isUnit - Return true iff *this* is either 1 or -1. - - Returns: - - true if *this* compares equal to or . - - See Also: - - , , , , , - , -*/ -BigInteger.prototype.isUnit = function() { - return this === ONE || - this === M_ONE || - (this._d.length === 1 && this._d[0] === 1); -}; - -/* - Function: multiply - Multiply two . - - Parameters: - - n - The number to multiply *this* by. Will be converted to a - . - - Returns: - - The numbers multiplied together. - - See Also: - - , , , -*/ -BigInteger.prototype.multiply = function(n) { - // TODO: Consider adding Karatsuba multiplication for large numbers - if (this._s === 0) { - return ZERO; - } - - n = BigInteger(n); - if (n._s === 0) { - return ZERO; - } - if (this.isUnit()) { - if (this._s < 0) { - return n.negate(); - } - return n; - } - if (n.isUnit()) { - if (n._s < 0) { - return this.negate(); - } - return this; - } - if (this === n) { - return this.square(); - } - - var r = (this._d.length >= n._d.length); - var a = (r ? this : n)._d; // a will be longer than b - var b = (r ? n : this)._d; - var al = a.length; - var bl = b.length; - - var pl = al + bl; - var partial = new Array(pl); - var i; - for (i = 0; i < pl; i++) { - partial[i] = 0; - } - - for (i = 0; i < bl; i++) { - var carry = 0; - var bi = b[i]; - var jlimit = al + i; - var digit; - for (var j = i; j < jlimit; j++) { - digit = partial[j] + bi * a[j - i] + carry; - carry = (digit / BigInteger_base) | 0; - partial[j] = (digit % BigInteger_base) | 0; - } - if (carry) { - digit = partial[j] + carry; - carry = (digit / BigInteger_base) | 0; - partial[j] = digit % BigInteger_base; - } - } - return new BigInteger(partial, this._s * n._s, CONSTRUCT); -}; - -// Multiply a BigInteger by a single-digit native number -// Assumes that this and n are >= 0 -// This is not really intended to be used outside the library itself -BigInteger.prototype.multiplySingleDigit = function(n) { - if (n === 0 || this._s === 0) { - return ZERO; - } - if (n === 1) { - return this; - } - - var digit; - if (this._d.length === 1) { - digit = this._d[0] * n; - if (digit >= BigInteger_base) { - return new BigInteger([(digit % BigInteger_base)|0, - (digit / BigInteger_base)|0], 1, CONSTRUCT); - } - return new BigInteger([digit], 1, CONSTRUCT); - } - - if (n === 2) { - return this.add(this); - } - if (this.isUnit()) { - return new BigInteger([n], 1, CONSTRUCT); - } - - var a = this._d; - var al = a.length; - - var pl = al + 1; - var partial = new Array(pl); - for (var i = 0; i < pl; i++) { - partial[i] = 0; - } - - var carry = 0; - for (var j = 0; j < al; j++) { - digit = n * a[j] + carry; - carry = (digit / BigInteger_base) | 0; - partial[j] = (digit % BigInteger_base) | 0; - } - if (carry) { - partial[j] = carry; - } - - return new BigInteger(partial, 1, CONSTRUCT); -}; - -/* - Function: square - Multiply a by itself. - - This is slightly faster than regular multiplication, since it removes the - duplicated multiplcations. - - Returns: - - > this.multiply(this) - - See Also: - -*/ -BigInteger.prototype.square = function() { - // Normally, squaring a 10-digit number would take 100 multiplications. - // Of these 10 are unique diagonals, of the remaining 90 (100-10), 45 are repeated. - // This procedure saves (N*(N-1))/2 multiplications, (e.g., 45 of 100 multiplies). - // Based on code by Gary Darby, Intellitech Systems Inc., www.DelphiForFun.org - - if (this._s === 0) { - return ZERO; - } - if (this.isUnit()) { - return ONE; - } - - var digits = this._d; - var length = digits.length; - var imult1 = new Array(length + length + 1); - var product, carry, k; - var i; - - // Calculate diagonal - for (i = 0; i < length; i++) { - k = i * 2; - product = digits[i] * digits[i]; - carry = (product / BigInteger_base) | 0; - imult1[k] = product % BigInteger_base; - imult1[k + 1] = carry; - } - - // Calculate repeating part - for (i = 0; i < length; i++) { - carry = 0; - k = i * 2 + 1; - for (var j = i + 1; j < length; j++, k++) { - product = digits[j] * digits[i] * 2 + imult1[k] + carry; - carry = (product / BigInteger_base) | 0; - imult1[k] = product % BigInteger_base; - } - k = length + i; - var digit = carry + imult1[k]; - carry = (digit / BigInteger_base) | 0; - imult1[k] = digit % BigInteger_base; - imult1[k + 1] += carry; - } - - return new BigInteger(imult1, 1, CONSTRUCT); -}; - -/* - Function: quotient - Divide two and truncate towards zero. - - throws an exception if *n* is zero. - - Parameters: - - n - The number to divide *this* by. Will be converted to a . - - Returns: - - The *this* / *n*, truncated to an integer. - - See Also: - - , , , , -*/ -BigInteger.prototype.quotient = function(n) { - return this.divRem(n)[0]; -}; - -/* - Function: divide - Deprecated synonym for . -*/ -BigInteger.prototype.divide = BigInteger.prototype.quotient; - -/* - Function: remainder - Calculate the remainder of two . - - throws an exception if *n* is zero. - - Parameters: - - n - The remainder after *this* is divided *this* by *n*. Will be - converted to a . - - Returns: - - *this* % *n*. - - See Also: - - , -*/ -BigInteger.prototype.remainder = function(n) { - return this.divRem(n)[1]; -}; - -/* - Function: divRem - Calculate the integer quotient and remainder of two . - - throws an exception if *n* is zero. - - Parameters: - - n - The number to divide *this* by. Will be converted to a . - - Returns: - - A two-element array containing the quotient and the remainder. - - > a.divRem(b) - - is exactly equivalent to - - > [a.quotient(b), a.remainder(b)] - - except it is faster, because they are calculated at the same time. - - See Also: - - , -*/ -BigInteger.prototype.divRem = function(n) { - n = BigInteger(n); - if (n._s === 0) { - throw new Error("Divide by zero"); - } - if (this._s === 0) { - return [ZERO, ZERO]; - } - if (n._d.length === 1) { - return this.divRemSmall(n._s * n._d[0]); - } - - // Test for easy cases -- |n1| <= |n2| - switch (this.compareAbs(n)) { - case 0: // n1 == n2 - return [this._s === n._s ? ONE : M_ONE, ZERO]; - case -1: // |n1| < |n2| - return [ZERO, this]; - } - - var sign = this._s * n._s; - var a = n.abs(); - var b_digits = this._d; - var b_index = b_digits.length; - var digits = n._d.length; - var quot = []; - var guess; - - var part = new BigInteger([], 0, CONSTRUCT); - - while (b_index) { - part._d.unshift(b_digits[--b_index]); - part = new BigInteger(part._d, 1, CONSTRUCT); - - if (part.compareAbs(n) < 0) { - quot.push(0); - continue; - } - if (part._s === 0) { - guess = 0; - } - else { - var xlen = part._d.length, ylen = a._d.length; - var highx = part._d[xlen-1]*BigInteger_base + part._d[xlen-2]; - var highy = a._d[ylen-1]*BigInteger_base + a._d[ylen-2]; - if (part._d.length > a._d.length) { - // The length of part._d can either match a._d length, - // or exceed it by one. - highx = (highx+1)*BigInteger_base; - } - guess = Math.ceil(highx/highy); - } - do { - var check = a.multiplySingleDigit(guess); - if (check.compareAbs(part) <= 0) { - break; - } - guess--; - } while (guess); - - quot.push(guess); - if (!guess) { - continue; - } - var diff = part.subtract(check); - part._d = diff._d.slice(); - } - - return [new BigInteger(quot.reverse(), sign, CONSTRUCT), - new BigInteger(part._d, this._s, CONSTRUCT)]; -}; - -// Throws an exception if n is outside of (-BigInteger.base, -1] or -// [1, BigInteger.base). It's not necessary to call this, since the -// other division functions will call it if they are able to. -BigInteger.prototype.divRemSmall = function(n) { - var r; - n = +n; - if (n === 0) { - throw new Error("Divide by zero"); - } - - var n_s = n < 0 ? -1 : 1; - var sign = this._s * n_s; - n = Math.abs(n); - - if (n < 1 || n >= BigInteger_base) { - throw new Error("Argument out of range"); - } - - if (this._s === 0) { - return [ZERO, ZERO]; - } - - if (n === 1 || n === -1) { - return [(sign === 1) ? this.abs() : new BigInteger(this._d, sign, CONSTRUCT), ZERO]; - } - - // 2 <= n < BigInteger_base - - // divide a single digit by a single digit - if (this._d.length === 1) { - var q = new BigInteger([(this._d[0] / n) | 0], 1, CONSTRUCT); - r = new BigInteger([(this._d[0] % n) | 0], 1, CONSTRUCT); - if (sign < 0) { - q = q.negate(); - } - if (this._s < 0) { - r = r.negate(); - } - return [q, r]; - } - - var digits = this._d.slice(); - var quot = new Array(digits.length); - var part = 0; - var diff = 0; - var i = 0; - var guess; - - while (digits.length) { - part = part * BigInteger_base + digits[digits.length - 1]; - if (part < n) { - quot[i++] = 0; - digits.pop(); - diff = BigInteger_base * diff + part; - continue; - } - if (part === 0) { - guess = 0; - } - else { - guess = (part / n) | 0; - } - - var check = n * guess; - diff = part - check; - quot[i++] = guess; - if (!guess) { - digits.pop(); - continue; - } - - digits.pop(); - part = diff; - } - - r = new BigInteger([diff], 1, CONSTRUCT); - if (this._s < 0) { - r = r.negate(); - } - return [new BigInteger(quot.reverse(), sign, CONSTRUCT), r]; -}; - -/* - Function: isEven - Return true iff *this* is divisible by two. - - Note that is even. - - Returns: - - true if *this* is even, false otherwise. - - See Also: - - -*/ -BigInteger.prototype.isEven = function() { - var digits = this._d; - return this._s === 0 || digits.length === 0 || (digits[0] % 2) === 0; -}; - -/* - Function: isOdd - Return true iff *this* is not divisible by two. - - Returns: - - true if *this* is odd, false otherwise. - - See Also: - - -*/ -BigInteger.prototype.isOdd = function() { - return !this.isEven(); -}; - -/* - Function: sign - Get the sign of a . - - Returns: - - * -1 if *this* < 0 - * 0 if *this* == 0 - * +1 if *this* > 0 - - See Also: - - , , , , -*/ -BigInteger.prototype.sign = function() { - return this._s; -}; - -/* - Function: isPositive - Return true iff *this* > 0. - - Returns: - - true if *this*.compare() == 1. - - See Also: - - , , , , , -*/ -BigInteger.prototype.isPositive = function() { - return this._s > 0; -}; - -/* - Function: isNegative - Return true iff *this* < 0. - - Returns: - - true if *this*.compare() == -1. - - See Also: - - , , , , , -*/ -BigInteger.prototype.isNegative = function() { - return this._s < 0; -}; - -/* - Function: isZero - Return true iff *this* == 0. - - Returns: - - true if *this*.compare() == 0. - - See Also: - - , , , , -*/ -BigInteger.prototype.isZero = function() { - return this._s === 0; -}; - -/* - Function: exp10 - Multiply a by a power of 10. - - This is equivalent to, but faster than - - > if (n >= 0) { - > return this.multiply(BigInteger("1e" + n)); - > } - > else { // n <= 0 - > return this.quotient(BigInteger("1e" + -n)); - > } - - Parameters: - - n - The power of 10 to multiply *this* by. *n* is converted to a - javascipt number and must be no greater than - (0x7FFFFFFF), or an exception will be thrown. - - Returns: - - *this* * (10 ** *n*), truncated to an integer if necessary. - - See Also: - - , -*/ -BigInteger.prototype.exp10 = function(n) { - n = +n; - if (n === 0) { - return this; - } - if (Math.abs(n) > Number(MAX_EXP)) { - throw new Error("exponent too large in BigInteger.exp10"); - } - // Optimization for this == 0. This also keeps us from having to trim zeros in the positive n case - if (this._s === 0) { - return ZERO; - } - if (n > 0) { - var k = new BigInteger(this._d.slice(), this._s, CONSTRUCT); - - for (; n >= BigInteger_base_log10; n -= BigInteger_base_log10) { - k._d.unshift(0); - } - if (n == 0) - return k; - k._s = 1; - k = k.multiplySingleDigit(Math.pow(10, n)); - return (this._s < 0 ? k.negate() : k); - } else if (-n >= this._d.length*BigInteger_base_log10) { - return ZERO; - } else { - var k = new BigInteger(this._d.slice(), this._s, CONSTRUCT); - - for (n = -n; n >= BigInteger_base_log10; n -= BigInteger_base_log10) { - k._d.shift(); - } - return (n == 0) ? k : k.divRemSmall(Math.pow(10, n))[0]; - } -}; - -/* - Function: pow - Raise a to a power. - - In this implementation, 0**0 is 1. - - Parameters: - - n - The exponent to raise *this* by. *n* must be no greater than - (0x7FFFFFFF), or an exception will be thrown. - - Returns: - - *this* raised to the *nth* power. - - See Also: - - -*/ -BigInteger.prototype.pow = function(n) { - if (this.isUnit()) { - if (this._s > 0) { - return this; - } - else { - return BigInteger(n).isOdd() ? this : this.negate(); - } - } - - n = BigInteger(n); - if (n._s === 0) { - return ONE; - } - else if (n._s < 0) { - if (this._s === 0) { - throw new Error("Divide by zero"); - } - else { - return ZERO; - } - } - if (this._s === 0) { - return ZERO; - } - if (n.isUnit()) { - return this; - } - - if (n.compareAbs(MAX_EXP) > 0) { - throw new Error("exponent too large in BigInteger.pow"); - } - var x = this; - var aux = ONE; - var two = BigInteger.small[2]; - - while (n.isPositive()) { - if (n.isOdd()) { - aux = aux.multiply(x); - if (n.isUnit()) { - return aux; - } - } - x = x.square(); - n = n.quotient(two); - } - - return aux; -}; - -/* - Function: modPow - Raise a to a power (mod m). - - Because it is reduced by a modulus, is not limited by - like . - - Parameters: - - exponent - The exponent to raise *this* by. Must be positive. - modulus - The modulus. - - Returns: - - *this* ^ *exponent* (mod *modulus*). - - See Also: - - , -*/ -BigInteger.prototype.modPow = function(exponent, modulus) { - var result = ONE; - var base = this; - - while (exponent.isPositive()) { - if (exponent.isOdd()) { - result = result.multiply(base).remainder(modulus); - } - - exponent = exponent.quotient(BigInteger.small[2]); - if (exponent.isPositive()) { - base = base.square().remainder(modulus); - } - } - - return result; -}; - -/* - Function: log - Get the natural logarithm of a as a native JavaScript number. - - This is equivalent to - - > Math.log(this.toJSValue()) - - but handles values outside of the native number range. - - Returns: - - log( *this* ) - - See Also: - - -*/ -BigInteger.prototype.log = function() { - switch (this._s) { - case 0: return -Infinity; - case -1: return NaN; - default: // Fall through. - } - - var l = this._d.length; - - if (l*BigInteger_base_log10 < 30) { - return Math.log(this.valueOf()); - } - - var N = Math.ceil(30/BigInteger_base_log10); - var firstNdigits = this._d.slice(l - N); - return Math.log((new BigInteger(firstNdigits, 1, CONSTRUCT)).valueOf()) + (l - N) * Math.log(BigInteger_base); -}; - -/* - Function: valueOf - Convert a to a native JavaScript integer. - - This is called automatically by JavaScipt to convert a to a - native value. - - Returns: - - > parseInt(this.toString(), 10) - - See Also: - - , -*/ -BigInteger.prototype.valueOf = function() { - return parseInt(this.toString(), 10); -}; - -/* - Function: toJSValue - Convert a to a native JavaScript integer. - - This is the same as valueOf, but more explicitly named. - - Returns: - - > parseInt(this.toString(), 10) - - See Also: - - , -*/ -BigInteger.prototype.toJSValue = function() { - return parseInt(this.toString(), 10); -}; - -var MAX_EXP = BigInteger(0x7FFFFFFF); -// Constant: MAX_EXP -// The largest exponent allowed in and (0x7FFFFFFF or 2147483647). -BigInteger.MAX_EXP = MAX_EXP; - -(function() { - function makeUnary(fn) { - return function(a) { - return fn.call(BigInteger(a)); - }; - } - - function makeBinary(fn) { - return function(a, b) { - return fn.call(BigInteger(a), BigInteger(b)); - }; - } - - function makeTrinary(fn) { - return function(a, b, c) { - return fn.call(BigInteger(a), BigInteger(b), BigInteger(c)); - }; - } - - (function() { - var i, fn; - var unary = "toJSValue,isEven,isOdd,sign,isZero,isNegative,abs,isUnit,square,negate,isPositive,toString,next,prev,log".split(","); - var binary = "compare,remainder,divRem,subtract,add,quotient,divide,multiply,pow,compareAbs".split(","); - var trinary = ["modPow"]; - - for (i = 0; i < unary.length; i++) { - fn = unary[i]; - BigInteger[fn] = makeUnary(BigInteger.prototype[fn]); - } - - for (i = 0; i < binary.length; i++) { - fn = binary[i]; - BigInteger[fn] = makeBinary(BigInteger.prototype[fn]); - } - - for (i = 0; i < trinary.length; i++) { - fn = trinary[i]; - BigInteger[fn] = makeTrinary(BigInteger.prototype[fn]); - } - - BigInteger.exp10 = function(x, n) { - return BigInteger(x).exp10(n); - }; - })(); -})(); - -exports.BigInteger = BigInteger; -})(typeof exports !== 'undefined' ? exports : this); diff --git a/src/js/bip39-libs.js b/src/js/bip39-libs.js new file mode 100644 index 0000000..16f6d44 --- /dev/null +++ b/src/js/bip39-libs.js @@ -0,0 +1,115830 @@ +(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.libs = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i} Promisified function + */ +function asPromise(fn, ctx/*, varargs */) { + var params = new Array(arguments.length - 1), + offset = 0, + index = 2, + pending = true; + while (index < arguments.length) + params[offset++] = arguments[index++]; + return new Promise(function executor(resolve, reject) { + params[offset] = function callback(err/*, varargs */) { + if (pending) { + pending = false; + if (err) + reject(err); + else { + var params = new Array(arguments.length - 1), + offset = 0; + while (offset < params.length) + params[offset++] = arguments[offset]; + resolve.apply(null, params); + } + } + }; + try { + fn.apply(ctx || null, params); + } catch (err) { + if (pending) { + pending = false; + reject(err); + } + } + }); +} + +},{}],3:[function(require,module,exports){ +"use strict"; + +/** + * A minimal base64 implementation for number arrays. + * @memberof util + * @namespace + */ +var base64 = exports; + +/** + * Calculates the byte length of a base64 encoded string. + * @param {string} string Base64 encoded string + * @returns {number} Byte length + */ +base64.length = function length(string) { + var p = string.length; + if (!p) + return 0; + var n = 0; + while (--p % 4 > 1 && string.charAt(p) === "=") + ++n; + return Math.ceil(string.length * 3) / 4 - n; +}; + +// Base64 encoding table +var b64 = new Array(64); + +// Base64 decoding table +var s64 = new Array(123); + +// 65..90, 97..122, 48..57, 43, 47 +for (var i = 0; i < 64;) + s64[b64[i] = i < 26 ? i + 65 : i < 52 ? i + 71 : i < 62 ? i - 4 : i - 59 | 43] = i++; + +/** + * Encodes a buffer to a base64 encoded string. + * @param {Uint8Array} buffer Source buffer + * @param {number} start Source start + * @param {number} end Source end + * @returns {string} Base64 encoded string + */ +base64.encode = function encode(buffer, start, end) { + var parts = null, + chunk = []; + var i = 0, // output index + j = 0, // goto index + t; // temporary + while (start < end) { + var b = buffer[start++]; + switch (j) { + case 0: + chunk[i++] = b64[b >> 2]; + t = (b & 3) << 4; + j = 1; + break; + case 1: + chunk[i++] = b64[t | b >> 4]; + t = (b & 15) << 2; + j = 2; + break; + case 2: + chunk[i++] = b64[t | b >> 6]; + chunk[i++] = b64[b & 63]; + j = 0; + break; + } + if (i > 8191) { + (parts || (parts = [])).push(String.fromCharCode.apply(String, chunk)); + i = 0; + } + } + if (j) { + chunk[i++] = b64[t]; + chunk[i++] = 61; + if (j === 1) + chunk[i++] = 61; + } + if (parts) { + if (i) + parts.push(String.fromCharCode.apply(String, chunk.slice(0, i))); + return parts.join(""); + } + return String.fromCharCode.apply(String, chunk.slice(0, i)); +}; + +var invalidEncoding = "invalid encoding"; + +/** + * Decodes a base64 encoded string to a buffer. + * @param {string} string Source string + * @param {Uint8Array} buffer Destination buffer + * @param {number} offset Destination offset + * @returns {number} Number of bytes written + * @throws {Error} If encoding is invalid + */ +base64.decode = function decode(string, buffer, offset) { + var start = offset; + var j = 0, // goto index + t; // temporary + for (var i = 0; i < string.length;) { + var c = string.charCodeAt(i++); + if (c === 61 && j > 1) + break; + if ((c = s64[c]) === undefined) + throw Error(invalidEncoding); + switch (j) { + case 0: + t = c; + j = 1; + break; + case 1: + buffer[offset++] = t << 2 | (c & 48) >> 4; + t = c; + j = 2; + break; + case 2: + buffer[offset++] = (t & 15) << 4 | (c & 60) >> 2; + t = c; + j = 3; + break; + case 3: + buffer[offset++] = (t & 3) << 6 | c; + j = 0; + break; + } + } + if (j === 1) + throw Error(invalidEncoding); + return offset - start; +}; + +/** + * Tests if the specified string appears to be base64 encoded. + * @param {string} string String to test + * @returns {boolean} `true` if probably base64 encoded, otherwise false + */ +base64.test = function test(string) { + return /^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$/.test(string); +}; + +},{}],4:[function(require,module,exports){ +"use strict"; +module.exports = codegen; + +/** + * Begins generating a function. + * @memberof util + * @param {string[]} functionParams Function parameter names + * @param {string} [functionName] Function name if not anonymous + * @returns {Codegen} Appender that appends code to the function's body + */ +function codegen(functionParams, functionName) { + + /* istanbul ignore if */ + if (typeof functionParams === "string") { + functionName = functionParams; + functionParams = undefined; + } + + var body = []; + + /** + * Appends code to the function's body or finishes generation. + * @typedef Codegen + * @type {function} + * @param {string|Object.} [formatStringOrScope] Format string or, to finish the function, an object of additional scope variables, if any + * @param {...*} [formatParams] Format parameters + * @returns {Codegen|Function} Itself or the generated function if finished + * @throws {Error} If format parameter counts do not match + */ + + function Codegen(formatStringOrScope) { + // note that explicit array handling below makes this ~50% faster + + // finish the function + if (typeof formatStringOrScope !== "string") { + var source = toString(); + if (codegen.verbose) + console.log("codegen: " + source); // eslint-disable-line no-console + source = "return " + source; + if (formatStringOrScope) { + var scopeKeys = Object.keys(formatStringOrScope), + scopeParams = new Array(scopeKeys.length + 1), + scopeValues = new Array(scopeKeys.length), + scopeOffset = 0; + while (scopeOffset < scopeKeys.length) { + scopeParams[scopeOffset] = scopeKeys[scopeOffset]; + scopeValues[scopeOffset] = formatStringOrScope[scopeKeys[scopeOffset++]]; + } + scopeParams[scopeOffset] = source; + return Function.apply(null, scopeParams).apply(null, scopeValues); // eslint-disable-line no-new-func + } + return Function(source)(); // eslint-disable-line no-new-func + } + + // otherwise append to body + var formatParams = new Array(arguments.length - 1), + formatOffset = 0; + while (formatOffset < formatParams.length) + formatParams[formatOffset] = arguments[++formatOffset]; + formatOffset = 0; + formatStringOrScope = formatStringOrScope.replace(/%([%dfijs])/g, function replace($0, $1) { + var value = formatParams[formatOffset++]; + switch ($1) { + case "d": case "f": return String(Number(value)); + case "i": return String(Math.floor(value)); + case "j": return JSON.stringify(value); + case "s": return String(value); + } + return "%"; + }); + if (formatOffset !== formatParams.length) + throw Error("parameter count mismatch"); + body.push(formatStringOrScope); + return Codegen; + } + + function toString(functionNameOverride) { + return "function " + (functionNameOverride || functionName || "") + "(" + (functionParams && functionParams.join(",") || "") + "){\n " + body.join("\n ") + "\n}"; + } + + Codegen.toString = toString; + return Codegen; +} + +/** + * Begins generating a function. + * @memberof util + * @function codegen + * @param {string} [functionName] Function name if not anonymous + * @returns {Codegen} Appender that appends code to the function's body + * @variation 2 + */ + +/** + * When set to `true`, codegen will log generated code to console. Useful for debugging. + * @name util.codegen.verbose + * @type {boolean} + */ +codegen.verbose = false; + +},{}],5:[function(require,module,exports){ +"use strict"; +module.exports = EventEmitter; + +/** + * Constructs a new event emitter instance. + * @classdesc A minimal event emitter. + * @memberof util + * @constructor + */ +function EventEmitter() { + + /** + * Registered listeners. + * @type {Object.} + * @private + */ + this._listeners = {}; +} + +/** + * Registers an event listener. + * @param {string} evt Event name + * @param {function} fn Listener + * @param {*} [ctx] Listener context + * @returns {util.EventEmitter} `this` + */ +EventEmitter.prototype.on = function on(evt, fn, ctx) { + (this._listeners[evt] || (this._listeners[evt] = [])).push({ + fn : fn, + ctx : ctx || this + }); + return this; +}; + +/** + * Removes an event listener or any matching listeners if arguments are omitted. + * @param {string} [evt] Event name. Removes all listeners if omitted. + * @param {function} [fn] Listener to remove. Removes all listeners of `evt` if omitted. + * @returns {util.EventEmitter} `this` + */ +EventEmitter.prototype.off = function off(evt, fn) { + if (evt === undefined) + this._listeners = {}; + else { + if (fn === undefined) + this._listeners[evt] = []; + else { + var listeners = this._listeners[evt]; + for (var i = 0; i < listeners.length;) + if (listeners[i].fn === fn) + listeners.splice(i, 1); + else + ++i; + } + } + return this; +}; + +/** + * Emits an event by calling its listeners with the specified arguments. + * @param {string} evt Event name + * @param {...*} args Arguments + * @returns {util.EventEmitter} `this` + */ +EventEmitter.prototype.emit = function emit(evt) { + var listeners = this._listeners[evt]; + if (listeners) { + var args = [], + i = 1; + for (; i < arguments.length;) + args.push(arguments[i++]); + for (i = 0; i < listeners.length;) + listeners[i].fn.apply(listeners[i++].ctx, args); + } + return this; +}; + +},{}],6:[function(require,module,exports){ +"use strict"; +module.exports = fetch; + +var asPromise = require("@protobufjs/aspromise"), + inquire = require("@protobufjs/inquire"); + +var fs = inquire("fs"); + +/** + * Node-style callback as used by {@link util.fetch}. + * @typedef FetchCallback + * @type {function} + * @param {?Error} error Error, if any, otherwise `null` + * @param {string} [contents] File contents, if there hasn't been an error + * @returns {undefined} + */ + +/** + * Options as used by {@link util.fetch}. + * @typedef FetchOptions + * @type {Object} + * @property {boolean} [binary=false] Whether expecting a binary response + * @property {boolean} [xhr=false] If `true`, forces the use of XMLHttpRequest + */ + +/** + * Fetches the contents of a file. + * @memberof util + * @param {string} filename File path or url + * @param {FetchOptions} options Fetch options + * @param {FetchCallback} callback Callback function + * @returns {undefined} + */ +function fetch(filename, options, callback) { + if (typeof options === "function") { + callback = options; + options = {}; + } else if (!options) + options = {}; + + if (!callback) + return asPromise(fetch, this, filename, options); // eslint-disable-line no-invalid-this + + // if a node-like filesystem is present, try it first but fall back to XHR if nothing is found. + if (!options.xhr && fs && fs.readFile) + return fs.readFile(filename, function fetchReadFileCallback(err, contents) { + return err && typeof XMLHttpRequest !== "undefined" + ? fetch.xhr(filename, options, callback) + : err + ? callback(err) + : callback(null, options.binary ? contents : contents.toString("utf8")); + }); + + // use the XHR version otherwise. + return fetch.xhr(filename, options, callback); +} + +/** + * Fetches the contents of a file. + * @name util.fetch + * @function + * @param {string} path File path or url + * @param {FetchCallback} callback Callback function + * @returns {undefined} + * @variation 2 + */ + +/** + * Fetches the contents of a file. + * @name util.fetch + * @function + * @param {string} path File path or url + * @param {FetchOptions} [options] Fetch options + * @returns {Promise} Promise + * @variation 3 + */ + +/**/ +fetch.xhr = function fetch_xhr(filename, options, callback) { + var xhr = new XMLHttpRequest(); + xhr.onreadystatechange /* works everywhere */ = function fetchOnReadyStateChange() { + + if (xhr.readyState !== 4) + return undefined; + + // local cors security errors return status 0 / empty string, too. afaik this cannot be + // reliably distinguished from an actually empty file for security reasons. feel free + // to send a pull request if you are aware of a solution. + if (xhr.status !== 0 && xhr.status !== 200) + return callback(Error("status " + xhr.status)); + + // if binary data is expected, make sure that some sort of array is returned, even if + // ArrayBuffers are not supported. the binary string fallback, however, is unsafe. + if (options.binary) { + var buffer = xhr.response; + if (!buffer) { + buffer = []; + for (var i = 0; i < xhr.responseText.length; ++i) + buffer.push(xhr.responseText.charCodeAt(i) & 255); + } + return callback(null, typeof Uint8Array !== "undefined" ? new Uint8Array(buffer) : buffer); + } + return callback(null, xhr.responseText); + }; + + if (options.binary) { + // ref: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Sending_and_Receiving_Binary_Data#Receiving_binary_data_in_older_browsers + if ("overrideMimeType" in xhr) + xhr.overrideMimeType("text/plain; charset=x-user-defined"); + xhr.responseType = "arraybuffer"; + } + + xhr.open("GET", filename); + xhr.send(); +}; + +},{"@protobufjs/aspromise":2,"@protobufjs/inquire":8}],7:[function(require,module,exports){ +"use strict"; + +module.exports = factory(factory); + +/** + * Reads / writes floats / doubles from / to buffers. + * @name util.float + * @namespace + */ + +/** + * Writes a 32 bit float to a buffer using little endian byte order. + * @name util.float.writeFloatLE + * @function + * @param {number} val Value to write + * @param {Uint8Array} buf Target buffer + * @param {number} pos Target buffer offset + * @returns {undefined} + */ + +/** + * Writes a 32 bit float to a buffer using big endian byte order. + * @name util.float.writeFloatBE + * @function + * @param {number} val Value to write + * @param {Uint8Array} buf Target buffer + * @param {number} pos Target buffer offset + * @returns {undefined} + */ + +/** + * Reads a 32 bit float from a buffer using little endian byte order. + * @name util.float.readFloatLE + * @function + * @param {Uint8Array} buf Source buffer + * @param {number} pos Source buffer offset + * @returns {number} Value read + */ + +/** + * Reads a 32 bit float from a buffer using big endian byte order. + * @name util.float.readFloatBE + * @function + * @param {Uint8Array} buf Source buffer + * @param {number} pos Source buffer offset + * @returns {number} Value read + */ + +/** + * Writes a 64 bit double to a buffer using little endian byte order. + * @name util.float.writeDoubleLE + * @function + * @param {number} val Value to write + * @param {Uint8Array} buf Target buffer + * @param {number} pos Target buffer offset + * @returns {undefined} + */ + +/** + * Writes a 64 bit double to a buffer using big endian byte order. + * @name util.float.writeDoubleBE + * @function + * @param {number} val Value to write + * @param {Uint8Array} buf Target buffer + * @param {number} pos Target buffer offset + * @returns {undefined} + */ + +/** + * Reads a 64 bit double from a buffer using little endian byte order. + * @name util.float.readDoubleLE + * @function + * @param {Uint8Array} buf Source buffer + * @param {number} pos Source buffer offset + * @returns {number} Value read + */ + +/** + * Reads a 64 bit double from a buffer using big endian byte order. + * @name util.float.readDoubleBE + * @function + * @param {Uint8Array} buf Source buffer + * @param {number} pos Source buffer offset + * @returns {number} Value read + */ + +// Factory function for the purpose of node-based testing in modified global environments +function factory(exports) { + + // float: typed array + if (typeof Float32Array !== "undefined") (function() { + + var f32 = new Float32Array([ -0 ]), + f8b = new Uint8Array(f32.buffer), + le = f8b[3] === 128; + + function writeFloat_f32_cpy(val, buf, pos) { + f32[0] = val; + buf[pos ] = f8b[0]; + buf[pos + 1] = f8b[1]; + buf[pos + 2] = f8b[2]; + buf[pos + 3] = f8b[3]; + } + + function writeFloat_f32_rev(val, buf, pos) { + f32[0] = val; + buf[pos ] = f8b[3]; + buf[pos + 1] = f8b[2]; + buf[pos + 2] = f8b[1]; + buf[pos + 3] = f8b[0]; + } + + /* istanbul ignore next */ + exports.writeFloatLE = le ? writeFloat_f32_cpy : writeFloat_f32_rev; + /* istanbul ignore next */ + exports.writeFloatBE = le ? writeFloat_f32_rev : writeFloat_f32_cpy; + + function readFloat_f32_cpy(buf, pos) { + f8b[0] = buf[pos ]; + f8b[1] = buf[pos + 1]; + f8b[2] = buf[pos + 2]; + f8b[3] = buf[pos + 3]; + return f32[0]; + } + + function readFloat_f32_rev(buf, pos) { + f8b[3] = buf[pos ]; + f8b[2] = buf[pos + 1]; + f8b[1] = buf[pos + 2]; + f8b[0] = buf[pos + 3]; + return f32[0]; + } + + /* istanbul ignore next */ + exports.readFloatLE = le ? readFloat_f32_cpy : readFloat_f32_rev; + /* istanbul ignore next */ + exports.readFloatBE = le ? readFloat_f32_rev : readFloat_f32_cpy; + + // float: ieee754 + })(); else (function() { + + function writeFloat_ieee754(writeUint, val, buf, pos) { + var sign = val < 0 ? 1 : 0; + if (sign) + val = -val; + if (val === 0) + writeUint(1 / val > 0 ? /* positive */ 0 : /* negative 0 */ 2147483648, buf, pos); + else if (isNaN(val)) + writeUint(2143289344, buf, pos); + else if (val > 3.4028234663852886e+38) // +-Infinity + writeUint((sign << 31 | 2139095040) >>> 0, buf, pos); + else if (val < 1.1754943508222875e-38) // denormal + writeUint((sign << 31 | Math.round(val / 1.401298464324817e-45)) >>> 0, buf, pos); + else { + var exponent = Math.floor(Math.log(val) / Math.LN2), + mantissa = Math.round(val * Math.pow(2, -exponent) * 8388608) & 8388607; + writeUint((sign << 31 | exponent + 127 << 23 | mantissa) >>> 0, buf, pos); + } + } + + exports.writeFloatLE = writeFloat_ieee754.bind(null, writeUintLE); + exports.writeFloatBE = writeFloat_ieee754.bind(null, writeUintBE); + + function readFloat_ieee754(readUint, buf, pos) { + var uint = readUint(buf, pos), + sign = (uint >> 31) * 2 + 1, + exponent = uint >>> 23 & 255, + mantissa = uint & 8388607; + return exponent === 255 + ? mantissa + ? NaN + : sign * Infinity + : exponent === 0 // denormal + ? sign * 1.401298464324817e-45 * mantissa + : sign * Math.pow(2, exponent - 150) * (mantissa + 8388608); + } + + exports.readFloatLE = readFloat_ieee754.bind(null, readUintLE); + exports.readFloatBE = readFloat_ieee754.bind(null, readUintBE); + + })(); + + // double: typed array + if (typeof Float64Array !== "undefined") (function() { + + var f64 = new Float64Array([-0]), + f8b = new Uint8Array(f64.buffer), + le = f8b[7] === 128; + + function writeDouble_f64_cpy(val, buf, pos) { + f64[0] = val; + buf[pos ] = f8b[0]; + buf[pos + 1] = f8b[1]; + buf[pos + 2] = f8b[2]; + buf[pos + 3] = f8b[3]; + buf[pos + 4] = f8b[4]; + buf[pos + 5] = f8b[5]; + buf[pos + 6] = f8b[6]; + buf[pos + 7] = f8b[7]; + } + + function writeDouble_f64_rev(val, buf, pos) { + f64[0] = val; + buf[pos ] = f8b[7]; + buf[pos + 1] = f8b[6]; + buf[pos + 2] = f8b[5]; + buf[pos + 3] = f8b[4]; + buf[pos + 4] = f8b[3]; + buf[pos + 5] = f8b[2]; + buf[pos + 6] = f8b[1]; + buf[pos + 7] = f8b[0]; + } + + /* istanbul ignore next */ + exports.writeDoubleLE = le ? writeDouble_f64_cpy : writeDouble_f64_rev; + /* istanbul ignore next */ + exports.writeDoubleBE = le ? writeDouble_f64_rev : writeDouble_f64_cpy; + + function readDouble_f64_cpy(buf, pos) { + f8b[0] = buf[pos ]; + f8b[1] = buf[pos + 1]; + f8b[2] = buf[pos + 2]; + f8b[3] = buf[pos + 3]; + f8b[4] = buf[pos + 4]; + f8b[5] = buf[pos + 5]; + f8b[6] = buf[pos + 6]; + f8b[7] = buf[pos + 7]; + return f64[0]; + } + + function readDouble_f64_rev(buf, pos) { + f8b[7] = buf[pos ]; + f8b[6] = buf[pos + 1]; + f8b[5] = buf[pos + 2]; + f8b[4] = buf[pos + 3]; + f8b[3] = buf[pos + 4]; + f8b[2] = buf[pos + 5]; + f8b[1] = buf[pos + 6]; + f8b[0] = buf[pos + 7]; + return f64[0]; + } + + /* istanbul ignore next */ + exports.readDoubleLE = le ? readDouble_f64_cpy : readDouble_f64_rev; + /* istanbul ignore next */ + exports.readDoubleBE = le ? readDouble_f64_rev : readDouble_f64_cpy; + + // double: ieee754 + })(); else (function() { + + function writeDouble_ieee754(writeUint, off0, off1, val, buf, pos) { + var sign = val < 0 ? 1 : 0; + if (sign) + val = -val; + if (val === 0) { + writeUint(0, buf, pos + off0); + writeUint(1 / val > 0 ? /* positive */ 0 : /* negative 0 */ 2147483648, buf, pos + off1); + } else if (isNaN(val)) { + writeUint(0, buf, pos + off0); + writeUint(2146959360, buf, pos + off1); + } else if (val > 1.7976931348623157e+308) { // +-Infinity + writeUint(0, buf, pos + off0); + writeUint((sign << 31 | 2146435072) >>> 0, buf, pos + off1); + } else { + var mantissa; + if (val < 2.2250738585072014e-308) { // denormal + mantissa = val / 5e-324; + writeUint(mantissa >>> 0, buf, pos + off0); + writeUint((sign << 31 | mantissa / 4294967296) >>> 0, buf, pos + off1); + } else { + var exponent = Math.floor(Math.log(val) / Math.LN2); + if (exponent === 1024) + exponent = 1023; + mantissa = val * Math.pow(2, -exponent); + writeUint(mantissa * 4503599627370496 >>> 0, buf, pos + off0); + writeUint((sign << 31 | exponent + 1023 << 20 | mantissa * 1048576 & 1048575) >>> 0, buf, pos + off1); + } + } + } + + exports.writeDoubleLE = writeDouble_ieee754.bind(null, writeUintLE, 0, 4); + exports.writeDoubleBE = writeDouble_ieee754.bind(null, writeUintBE, 4, 0); + + function readDouble_ieee754(readUint, off0, off1, buf, pos) { + var lo = readUint(buf, pos + off0), + hi = readUint(buf, pos + off1); + var sign = (hi >> 31) * 2 + 1, + exponent = hi >>> 20 & 2047, + mantissa = 4294967296 * (hi & 1048575) + lo; + return exponent === 2047 + ? mantissa + ? NaN + : sign * Infinity + : exponent === 0 // denormal + ? sign * 5e-324 * mantissa + : sign * Math.pow(2, exponent - 1075) * (mantissa + 4503599627370496); + } + + exports.readDoubleLE = readDouble_ieee754.bind(null, readUintLE, 0, 4); + exports.readDoubleBE = readDouble_ieee754.bind(null, readUintBE, 4, 0); + + })(); + + return exports; +} + +// uint helpers + +function writeUintLE(val, buf, pos) { + buf[pos ] = val & 255; + buf[pos + 1] = val >>> 8 & 255; + buf[pos + 2] = val >>> 16 & 255; + buf[pos + 3] = val >>> 24; +} + +function writeUintBE(val, buf, pos) { + buf[pos ] = val >>> 24; + buf[pos + 1] = val >>> 16 & 255; + buf[pos + 2] = val >>> 8 & 255; + buf[pos + 3] = val & 255; +} + +function readUintLE(buf, pos) { + return (buf[pos ] + | buf[pos + 1] << 8 + | buf[pos + 2] << 16 + | buf[pos + 3] << 24) >>> 0; +} + +function readUintBE(buf, pos) { + return (buf[pos ] << 24 + | buf[pos + 1] << 16 + | buf[pos + 2] << 8 + | buf[pos + 3]) >>> 0; +} + +},{}],8:[function(require,module,exports){ +"use strict"; +module.exports = inquire; + +/** + * Requires a module only if available. + * @memberof util + * @param {string} moduleName Module to require + * @returns {?Object} Required module if available and not empty, otherwise `null` + */ +function inquire(moduleName) { + try { + var mod = eval("quire".replace(/^/,"re"))(moduleName); // eslint-disable-line no-eval + if (mod && (mod.length || Object.keys(mod).length)) + return mod; + } catch (e) {} // eslint-disable-line no-empty + return null; +} + +},{}],9:[function(require,module,exports){ +"use strict"; + +/** + * A minimal path module to resolve Unix, Windows and URL paths alike. + * @memberof util + * @namespace + */ +var path = exports; + +var isAbsolute = +/** + * Tests if the specified path is absolute. + * @param {string} path Path to test + * @returns {boolean} `true` if path is absolute + */ +path.isAbsolute = function isAbsolute(path) { + return /^(?:\/|\w+:)/.test(path); +}; + +var normalize = +/** + * Normalizes the specified path. + * @param {string} path Path to normalize + * @returns {string} Normalized path + */ +path.normalize = function normalize(path) { + path = path.replace(/\\/g, "/") + .replace(/\/{2,}/g, "/"); + var parts = path.split("/"), + absolute = isAbsolute(path), + prefix = ""; + if (absolute) + prefix = parts.shift() + "/"; + for (var i = 0; i < parts.length;) { + if (parts[i] === "..") { + if (i > 0 && parts[i - 1] !== "..") + parts.splice(--i, 2); + else if (absolute) + parts.splice(i, 1); + else + ++i; + } else if (parts[i] === ".") + parts.splice(i, 1); + else + ++i; + } + return prefix + parts.join("/"); +}; + +/** + * Resolves the specified include path against the specified origin path. + * @param {string} originPath Path to the origin file + * @param {string} includePath Include path relative to origin path + * @param {boolean} [alreadyNormalized=false] `true` if both paths are already known to be normalized + * @returns {string} Path to the include file + */ +path.resolve = function resolve(originPath, includePath, alreadyNormalized) { + if (!alreadyNormalized) + includePath = normalize(includePath); + if (isAbsolute(includePath)) + return includePath; + if (!alreadyNormalized) + originPath = normalize(originPath); + return (originPath = originPath.replace(/(?:\/|^)[^/]+$/, "")).length ? normalize(originPath + "/" + includePath) : includePath; +}; + +},{}],10:[function(require,module,exports){ +"use strict"; +module.exports = pool; + +/** + * An allocator as used by {@link util.pool}. + * @typedef PoolAllocator + * @type {function} + * @param {number} size Buffer size + * @returns {Uint8Array} Buffer + */ + +/** + * A slicer as used by {@link util.pool}. + * @typedef PoolSlicer + * @type {function} + * @param {number} start Start offset + * @param {number} end End offset + * @returns {Uint8Array} Buffer slice + * @this {Uint8Array} + */ + +/** + * A general purpose buffer pool. + * @memberof util + * @function + * @param {PoolAllocator} alloc Allocator + * @param {PoolSlicer} slice Slicer + * @param {number} [size=8192] Slab size + * @returns {PoolAllocator} Pooled allocator + */ +function pool(alloc, slice, size) { + var SIZE = size || 8192; + var MAX = SIZE >>> 1; + var slab = null; + var offset = SIZE; + return function pool_alloc(size) { + if (size < 1 || size > MAX) + return alloc(size); + if (offset + size > SIZE) { + slab = alloc(SIZE); + offset = 0; + } + var buf = slice.call(slab, offset, offset += size); + if (offset & 7) // align to 32 bit + offset = (offset | 7) + 1; + return buf; + }; +} + +},{}],11:[function(require,module,exports){ +"use strict"; + +/** + * A minimal UTF8 implementation for number arrays. + * @memberof util + * @namespace + */ +var utf8 = exports; + +/** + * Calculates the UTF8 byte length of a string. + * @param {string} string String + * @returns {number} Byte length + */ +utf8.length = function utf8_length(string) { + var len = 0, + c = 0; + for (var i = 0; i < string.length; ++i) { + c = string.charCodeAt(i); + if (c < 128) + len += 1; + else if (c < 2048) + len += 2; + else if ((c & 0xFC00) === 0xD800 && (string.charCodeAt(i + 1) & 0xFC00) === 0xDC00) { + ++i; + len += 4; + } else + len += 3; + } + return len; +}; + +/** + * Reads UTF8 bytes as a string. + * @param {Uint8Array} buffer Source buffer + * @param {number} start Source start + * @param {number} end Source end + * @returns {string} String read + */ +utf8.read = function utf8_read(buffer, start, end) { + var len = end - start; + if (len < 1) + return ""; + var parts = null, + chunk = [], + i = 0, // char offset + t; // temporary + while (start < end) { + t = buffer[start++]; + if (t < 128) + chunk[i++] = t; + else if (t > 191 && t < 224) + chunk[i++] = (t & 31) << 6 | buffer[start++] & 63; + else if (t > 239 && t < 365) { + t = ((t & 7) << 18 | (buffer[start++] & 63) << 12 | (buffer[start++] & 63) << 6 | buffer[start++] & 63) - 0x10000; + chunk[i++] = 0xD800 + (t >> 10); + chunk[i++] = 0xDC00 + (t & 1023); + } else + chunk[i++] = (t & 15) << 12 | (buffer[start++] & 63) << 6 | buffer[start++] & 63; + if (i > 8191) { + (parts || (parts = [])).push(String.fromCharCode.apply(String, chunk)); + i = 0; + } + } + if (parts) { + if (i) + parts.push(String.fromCharCode.apply(String, chunk.slice(0, i))); + return parts.join(""); + } + return String.fromCharCode.apply(String, chunk.slice(0, i)); +}; + +/** + * Writes a string as UTF8 bytes. + * @param {string} string Source string + * @param {Uint8Array} buffer Destination buffer + * @param {number} offset Destination offset + * @returns {number} Bytes written + */ +utf8.write = function utf8_write(string, buffer, offset) { + var start = offset, + c1, // character 1 + c2; // character 2 + for (var i = 0; i < string.length; ++i) { + c1 = string.charCodeAt(i); + if (c1 < 128) { + buffer[offset++] = c1; + } else if (c1 < 2048) { + buffer[offset++] = c1 >> 6 | 192; + buffer[offset++] = c1 & 63 | 128; + } else if ((c1 & 0xFC00) === 0xD800 && ((c2 = string.charCodeAt(i + 1)) & 0xFC00) === 0xDC00) { + c1 = 0x10000 + ((c1 & 0x03FF) << 10) + (c2 & 0x03FF); + ++i; + buffer[offset++] = c1 >> 18 | 240; + buffer[offset++] = c1 >> 12 & 63 | 128; + buffer[offset++] = c1 >> 6 & 63 | 128; + buffer[offset++] = c1 & 63 | 128; + } else { + buffer[offset++] = c1 >> 12 | 224; + buffer[offset++] = c1 >> 6 & 63 | 128; + buffer[offset++] = c1 & 63 | 128; + } + } + return offset - start; +}; + +},{}],12:[function(require,module,exports){ +var asn1 = exports; + +asn1.bignum = require('bn.js'); + +asn1.define = require('./asn1/api').define; +asn1.base = require('./asn1/base'); +asn1.constants = require('./asn1/constants'); +asn1.decoders = require('./asn1/decoders'); +asn1.encoders = require('./asn1/encoders'); + +},{"./asn1/api":13,"./asn1/base":15,"./asn1/constants":19,"./asn1/decoders":21,"./asn1/encoders":24,"bn.js":108}],13:[function(require,module,exports){ +var asn1 = require('../asn1'); +var inherits = require('inherits'); + +var api = exports; + +api.define = function define(name, body) { + return new Entity(name, body); +}; + +function Entity(name, body) { + this.name = name; + this.body = body; + + this.decoders = {}; + this.encoders = {}; +}; + +Entity.prototype._createNamed = function createNamed(base) { + var named; + try { + named = require('vm').runInThisContext( + '(function ' + this.name + '(entity) {\n' + + ' this._initNamed(entity);\n' + + '})' + ); + } catch (e) { + named = function (entity) { + this._initNamed(entity); + }; + } + inherits(named, base); + named.prototype._initNamed = function initnamed(entity) { + base.call(this, entity); + }; + + return new named(this); +}; + +Entity.prototype._getDecoder = function _getDecoder(enc) { + enc = enc || 'der'; + // Lazily create decoder + if (!this.decoders.hasOwnProperty(enc)) + this.decoders[enc] = this._createNamed(asn1.decoders[enc]); + return this.decoders[enc]; +}; + +Entity.prototype.decode = function decode(data, enc, options) { + return this._getDecoder(enc).decode(data, options); +}; + +Entity.prototype._getEncoder = function _getEncoder(enc) { + enc = enc || 'der'; + // Lazily create encoder + if (!this.encoders.hasOwnProperty(enc)) + this.encoders[enc] = this._createNamed(asn1.encoders[enc]); + return this.encoders[enc]; +}; + +Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) { + return this._getEncoder(enc).encode(data, reporter); +}; + +},{"../asn1":12,"inherits":396,"vm":831}],14:[function(require,module,exports){ +var inherits = require('inherits'); +var Reporter = require('../base').Reporter; +var Buffer = require('buffer').Buffer; + +function DecoderBuffer(base, options) { + Reporter.call(this, options); + if (!Buffer.isBuffer(base)) { + this.error('Input not Buffer'); + return; + } + + this.base = base; + this.offset = 0; + this.length = base.length; +} +inherits(DecoderBuffer, Reporter); +exports.DecoderBuffer = DecoderBuffer; + +DecoderBuffer.prototype.save = function save() { + return { offset: this.offset, reporter: Reporter.prototype.save.call(this) }; +}; + +DecoderBuffer.prototype.restore = function restore(save) { + // Return skipped data + var res = new DecoderBuffer(this.base); + res.offset = save.offset; + res.length = this.offset; + + this.offset = save.offset; + Reporter.prototype.restore.call(this, save.reporter); + + return res; +}; + +DecoderBuffer.prototype.isEmpty = function isEmpty() { + return this.offset === this.length; +}; + +DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) { + if (this.offset + 1 <= this.length) + return this.base.readUInt8(this.offset++, true); + else + return this.error(fail || 'DecoderBuffer overrun'); +} + +DecoderBuffer.prototype.skip = function skip(bytes, fail) { + if (!(this.offset + bytes <= this.length)) + return this.error(fail || 'DecoderBuffer overrun'); + + var res = new DecoderBuffer(this.base); + + // Share reporter state + res._reporterState = this._reporterState; + + res.offset = this.offset; + res.length = this.offset + bytes; + this.offset += bytes; + return res; +} + +DecoderBuffer.prototype.raw = function raw(save) { + return this.base.slice(save ? save.offset : this.offset, this.length); +} + +function EncoderBuffer(value, reporter) { + if (Array.isArray(value)) { + this.length = 0; + this.value = value.map(function(item) { + if (!(item instanceof EncoderBuffer)) + item = new EncoderBuffer(item, reporter); + this.length += item.length; + return item; + }, this); + } else if (typeof value === 'number') { + if (!(0 <= value && value <= 0xff)) + return reporter.error('non-byte EncoderBuffer value'); + this.value = value; + this.length = 1; + } else if (typeof value === 'string') { + this.value = value; + this.length = Buffer.byteLength(value); + } else if (Buffer.isBuffer(value)) { + this.value = value; + this.length = value.length; + } else { + return reporter.error('Unsupported type: ' + typeof value); + } +} +exports.EncoderBuffer = EncoderBuffer; + +EncoderBuffer.prototype.join = function join(out, offset) { + if (!out) + out = new Buffer(this.length); + if (!offset) + offset = 0; + + if (this.length === 0) + return out; + + if (Array.isArray(this.value)) { + this.value.forEach(function(item) { + item.join(out, offset); + offset += item.length; + }); + } else { + if (typeof this.value === 'number') + out[offset] = this.value; + else if (typeof this.value === 'string') + out.write(this.value, offset); + else if (Buffer.isBuffer(this.value)) + this.value.copy(out, offset); + offset += this.length; + } + + return out; +}; + +},{"../base":15,"buffer":146,"inherits":396}],15:[function(require,module,exports){ +var base = exports; + +base.Reporter = require('./reporter').Reporter; +base.DecoderBuffer = require('./buffer').DecoderBuffer; +base.EncoderBuffer = require('./buffer').EncoderBuffer; +base.Node = require('./node'); + +},{"./buffer":14,"./node":16,"./reporter":17}],16:[function(require,module,exports){ +var Reporter = require('../base').Reporter; +var EncoderBuffer = require('../base').EncoderBuffer; +var DecoderBuffer = require('../base').DecoderBuffer; +var assert = require('minimalistic-assert'); + +// Supported tags +var tags = [ + 'seq', 'seqof', 'set', 'setof', 'objid', 'bool', + 'gentime', 'utctime', 'null_', 'enum', 'int', 'objDesc', + 'bitstr', 'bmpstr', 'charstr', 'genstr', 'graphstr', 'ia5str', 'iso646str', + 'numstr', 'octstr', 'printstr', 't61str', 'unistr', 'utf8str', 'videostr' +]; + +// Public methods list +var methods = [ + 'key', 'obj', 'use', 'optional', 'explicit', 'implicit', 'def', 'choice', + 'any', 'contains' +].concat(tags); + +// Overrided methods list +var overrided = [ + '_peekTag', '_decodeTag', '_use', + '_decodeStr', '_decodeObjid', '_decodeTime', + '_decodeNull', '_decodeInt', '_decodeBool', '_decodeList', + + '_encodeComposite', '_encodeStr', '_encodeObjid', '_encodeTime', + '_encodeNull', '_encodeInt', '_encodeBool' +]; + +function Node(enc, parent) { + var state = {}; + this._baseState = state; + + state.enc = enc; + + state.parent = parent || null; + state.children = null; + + // State + state.tag = null; + state.args = null; + state.reverseArgs = null; + state.choice = null; + state.optional = false; + state.any = false; + state.obj = false; + state.use = null; + state.useDecoder = null; + state.key = null; + state['default'] = null; + state.explicit = null; + state.implicit = null; + state.contains = null; + + // Should create new instance on each method + if (!state.parent) { + state.children = []; + this._wrap(); + } +} +module.exports = Node; + +var stateProps = [ + 'enc', 'parent', 'children', 'tag', 'args', 'reverseArgs', 'choice', + 'optional', 'any', 'obj', 'use', 'alteredUse', 'key', 'default', 'explicit', + 'implicit', 'contains' +]; + +Node.prototype.clone = function clone() { + var state = this._baseState; + var cstate = {}; + stateProps.forEach(function(prop) { + cstate[prop] = state[prop]; + }); + var res = new this.constructor(cstate.parent); + res._baseState = cstate; + return res; +}; + +Node.prototype._wrap = function wrap() { + var state = this._baseState; + methods.forEach(function(method) { + this[method] = function _wrappedMethod() { + var clone = new this.constructor(this); + state.children.push(clone); + return clone[method].apply(clone, arguments); + }; + }, this); +}; + +Node.prototype._init = function init(body) { + var state = this._baseState; + + assert(state.parent === null); + body.call(this); + + // Filter children + state.children = state.children.filter(function(child) { + return child._baseState.parent === this; + }, this); + assert.equal(state.children.length, 1, 'Root node can have only one child'); +}; + +Node.prototype._useArgs = function useArgs(args) { + var state = this._baseState; + + // Filter children and args + var children = args.filter(function(arg) { + return arg instanceof this.constructor; + }, this); + args = args.filter(function(arg) { + return !(arg instanceof this.constructor); + }, this); + + if (children.length !== 0) { + assert(state.children === null); + state.children = children; + + // Replace parent to maintain backward link + children.forEach(function(child) { + child._baseState.parent = this; + }, this); + } + if (args.length !== 0) { + assert(state.args === null); + state.args = args; + state.reverseArgs = args.map(function(arg) { + if (typeof arg !== 'object' || arg.constructor !== Object) + return arg; + + var res = {}; + Object.keys(arg).forEach(function(key) { + if (key == (key | 0)) + key |= 0; + var value = arg[key]; + res[value] = key; + }); + return res; + }); + } +}; + +// +// Overrided methods +// + +overrided.forEach(function(method) { + Node.prototype[method] = function _overrided() { + var state = this._baseState; + throw new Error(method + ' not implemented for encoding: ' + state.enc); + }; +}); + +// +// Public methods +// + +tags.forEach(function(tag) { + Node.prototype[tag] = function _tagMethod() { + var state = this._baseState; + var args = Array.prototype.slice.call(arguments); + + assert(state.tag === null); + state.tag = tag; + + this._useArgs(args); + + return this; + }; +}); + +Node.prototype.use = function use(item) { + assert(item); + var state = this._baseState; + + assert(state.use === null); + state.use = item; + + return this; +}; + +Node.prototype.optional = function optional() { + var state = this._baseState; + + state.optional = true; + + return this; +}; + +Node.prototype.def = function def(val) { + var state = this._baseState; + + assert(state['default'] === null); + state['default'] = val; + state.optional = true; + + return this; +}; + +Node.prototype.explicit = function explicit(num) { + var state = this._baseState; + + assert(state.explicit === null && state.implicit === null); + state.explicit = num; + + return this; +}; + +Node.prototype.implicit = function implicit(num) { + var state = this._baseState; + + assert(state.explicit === null && state.implicit === null); + state.implicit = num; + + return this; +}; + +Node.prototype.obj = function obj() { + var state = this._baseState; + var args = Array.prototype.slice.call(arguments); + + state.obj = true; + + if (args.length !== 0) + this._useArgs(args); + + return this; +}; + +Node.prototype.key = function key(newKey) { + var state = this._baseState; + + assert(state.key === null); + state.key = newKey; + + return this; +}; + +Node.prototype.any = function any() { + var state = this._baseState; + + state.any = true; + + return this; +}; + +Node.prototype.choice = function choice(obj) { + var state = this._baseState; + + assert(state.choice === null); + state.choice = obj; + this._useArgs(Object.keys(obj).map(function(key) { + return obj[key]; + })); + + return this; +}; + +Node.prototype.contains = function contains(item) { + var state = this._baseState; + + assert(state.use === null); + state.contains = item; + + return this; +}; + +// +// Decoding +// + +Node.prototype._decode = function decode(input, options) { + var state = this._baseState; + + // Decode root node + if (state.parent === null) + return input.wrapResult(state.children[0]._decode(input, options)); + + var result = state['default']; + var present = true; + + var prevKey = null; + if (state.key !== null) + prevKey = input.enterKey(state.key); + + // Check if tag is there + if (state.optional) { + var tag = null; + if (state.explicit !== null) + tag = state.explicit; + else if (state.implicit !== null) + tag = state.implicit; + else if (state.tag !== null) + tag = state.tag; + + if (tag === null && !state.any) { + // Trial and Error + var save = input.save(); + try { + if (state.choice === null) + this._decodeGeneric(state.tag, input, options); + else + this._decodeChoice(input, options); + present = true; + } catch (e) { + present = false; + } + input.restore(save); + } else { + present = this._peekTag(input, tag, state.any); + + if (input.isError(present)) + return present; + } + } + + // Push object on stack + var prevObj; + if (state.obj && present) + prevObj = input.enterObject(); + + if (present) { + // Unwrap explicit values + if (state.explicit !== null) { + var explicit = this._decodeTag(input, state.explicit); + if (input.isError(explicit)) + return explicit; + input = explicit; + } + + var start = input.offset; + + // Unwrap implicit and normal values + if (state.use === null && state.choice === null) { + if (state.any) + var save = input.save(); + var body = this._decodeTag( + input, + state.implicit !== null ? state.implicit : state.tag, + state.any + ); + if (input.isError(body)) + return body; + + if (state.any) + result = input.raw(save); + else + input = body; + } + + if (options && options.track && state.tag !== null) + options.track(input.path(), start, input.length, 'tagged'); + + if (options && options.track && state.tag !== null) + options.track(input.path(), input.offset, input.length, 'content'); + + // Select proper method for tag + if (state.any) + result = result; + else if (state.choice === null) + result = this._decodeGeneric(state.tag, input, options); + else + result = this._decodeChoice(input, options); + + if (input.isError(result)) + return result; + + // Decode children + if (!state.any && state.choice === null && state.children !== null) { + state.children.forEach(function decodeChildren(child) { + // NOTE: We are ignoring errors here, to let parser continue with other + // parts of encoded data + child._decode(input, options); + }); + } + + // Decode contained/encoded by schema, only in bit or octet strings + if (state.contains && (state.tag === 'octstr' || state.tag === 'bitstr')) { + var data = new DecoderBuffer(result); + result = this._getUse(state.contains, input._reporterState.obj) + ._decode(data, options); + } + } + + // Pop object + if (state.obj && present) + result = input.leaveObject(prevObj); + + // Set key + if (state.key !== null && (result !== null || present === true)) + input.leaveKey(prevKey, state.key, result); + else if (prevKey !== null) + input.exitKey(prevKey); + + return result; +}; + +Node.prototype._decodeGeneric = function decodeGeneric(tag, input, options) { + var state = this._baseState; + + if (tag === 'seq' || tag === 'set') + return null; + if (tag === 'seqof' || tag === 'setof') + return this._decodeList(input, tag, state.args[0], options); + else if (/str$/.test(tag)) + return this._decodeStr(input, tag, options); + else if (tag === 'objid' && state.args) + return this._decodeObjid(input, state.args[0], state.args[1], options); + else if (tag === 'objid') + return this._decodeObjid(input, null, null, options); + else if (tag === 'gentime' || tag === 'utctime') + return this._decodeTime(input, tag, options); + else if (tag === 'null_') + return this._decodeNull(input, options); + else if (tag === 'bool') + return this._decodeBool(input, options); + else if (tag === 'objDesc') + return this._decodeStr(input, tag, options); + else if (tag === 'int' || tag === 'enum') + return this._decodeInt(input, state.args && state.args[0], options); + + if (state.use !== null) { + return this._getUse(state.use, input._reporterState.obj) + ._decode(input, options); + } else { + return input.error('unknown tag: ' + tag); + } +}; + +Node.prototype._getUse = function _getUse(entity, obj) { + + var state = this._baseState; + // Create altered use decoder if implicit is set + state.useDecoder = this._use(entity, obj); + assert(state.useDecoder._baseState.parent === null); + state.useDecoder = state.useDecoder._baseState.children[0]; + if (state.implicit !== state.useDecoder._baseState.implicit) { + state.useDecoder = state.useDecoder.clone(); + state.useDecoder._baseState.implicit = state.implicit; + } + return state.useDecoder; +}; + +Node.prototype._decodeChoice = function decodeChoice(input, options) { + var state = this._baseState; + var result = null; + var match = false; + + Object.keys(state.choice).some(function(key) { + var save = input.save(); + var node = state.choice[key]; + try { + var value = node._decode(input, options); + if (input.isError(value)) + return false; + + result = { type: key, value: value }; + match = true; + } catch (e) { + input.restore(save); + return false; + } + return true; + }, this); + + if (!match) + return input.error('Choice not matched'); + + return result; +}; + +// +// Encoding +// + +Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) { + return new EncoderBuffer(data, this.reporter); +}; + +Node.prototype._encode = function encode(data, reporter, parent) { + var state = this._baseState; + if (state['default'] !== null && state['default'] === data) + return; + + var result = this._encodeValue(data, reporter, parent); + if (result === undefined) + return; + + if (this._skipDefault(result, reporter, parent)) + return; + + return result; +}; + +Node.prototype._encodeValue = function encode(data, reporter, parent) { + var state = this._baseState; + + // Decode root node + if (state.parent === null) + return state.children[0]._encode(data, reporter || new Reporter()); + + var result = null; + + // Set reporter to share it with a child class + this.reporter = reporter; + + // Check if data is there + if (state.optional && data === undefined) { + if (state['default'] !== null) + data = state['default'] + else + return; + } + + // Encode children first + var content = null; + var primitive = false; + if (state.any) { + // Anything that was given is translated to buffer + result = this._createEncoderBuffer(data); + } else if (state.choice) { + result = this._encodeChoice(data, reporter); + } else if (state.contains) { + content = this._getUse(state.contains, parent)._encode(data, reporter); + primitive = true; + } else if (state.children) { + content = state.children.map(function(child) { + if (child._baseState.tag === 'null_') + return child._encode(null, reporter, data); + + if (child._baseState.key === null) + return reporter.error('Child should have a key'); + var prevKey = reporter.enterKey(child._baseState.key); + + if (typeof data !== 'object') + return reporter.error('Child expected, but input is not object'); + + var res = child._encode(data[child._baseState.key], reporter, data); + reporter.leaveKey(prevKey); + + return res; + }, this).filter(function(child) { + return child; + }); + content = this._createEncoderBuffer(content); + } else { + if (state.tag === 'seqof' || state.tag === 'setof') { + // TODO(indutny): this should be thrown on DSL level + if (!(state.args && state.args.length === 1)) + return reporter.error('Too many args for : ' + state.tag); + + if (!Array.isArray(data)) + return reporter.error('seqof/setof, but data is not Array'); + + var child = this.clone(); + child._baseState.implicit = null; + content = this._createEncoderBuffer(data.map(function(item) { + var state = this._baseState; + + return this._getUse(state.args[0], data)._encode(item, reporter); + }, child)); + } else if (state.use !== null) { + result = this._getUse(state.use, parent)._encode(data, reporter); + } else { + content = this._encodePrimitive(state.tag, data); + primitive = true; + } + } + + // Encode data itself + var result; + if (!state.any && state.choice === null) { + var tag = state.implicit !== null ? state.implicit : state.tag; + var cls = state.implicit === null ? 'universal' : 'context'; + + if (tag === null) { + if (state.use === null) + reporter.error('Tag could be omitted only for .use()'); + } else { + if (state.use === null) + result = this._encodeComposite(tag, primitive, cls, content); + } + } + + // Wrap in explicit + if (state.explicit !== null) + result = this._encodeComposite(state.explicit, false, 'context', result); + + return result; +}; + +Node.prototype._encodeChoice = function encodeChoice(data, reporter) { + var state = this._baseState; + + var node = state.choice[data.type]; + if (!node) { + assert( + false, + data.type + ' not found in ' + + JSON.stringify(Object.keys(state.choice))); + } + return node._encode(data.value, reporter); +}; + +Node.prototype._encodePrimitive = function encodePrimitive(tag, data) { + var state = this._baseState; + + if (/str$/.test(tag)) + return this._encodeStr(data, tag); + else if (tag === 'objid' && state.args) + return this._encodeObjid(data, state.reverseArgs[0], state.args[1]); + else if (tag === 'objid') + return this._encodeObjid(data, null, null); + else if (tag === 'gentime' || tag === 'utctime') + return this._encodeTime(data, tag); + else if (tag === 'null_') + return this._encodeNull(); + else if (tag === 'int' || tag === 'enum') + return this._encodeInt(data, state.args && state.reverseArgs[0]); + else if (tag === 'bool') + return this._encodeBool(data); + else if (tag === 'objDesc') + return this._encodeStr(data, tag); + else + throw new Error('Unsupported tag: ' + tag); +}; + +Node.prototype._isNumstr = function isNumstr(str) { + return /^[0-9 ]*$/.test(str); +}; + +Node.prototype._isPrintstr = function isPrintstr(str) { + return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str); +}; + +},{"../base":15,"minimalistic-assert":640}],17:[function(require,module,exports){ +var inherits = require('inherits'); + +function Reporter(options) { + this._reporterState = { + obj: null, + path: [], + options: options || {}, + errors: [] + }; +} +exports.Reporter = Reporter; + +Reporter.prototype.isError = function isError(obj) { + return obj instanceof ReporterError; +}; + +Reporter.prototype.save = function save() { + var state = this._reporterState; + + return { obj: state.obj, pathLen: state.path.length }; +}; + +Reporter.prototype.restore = function restore(data) { + var state = this._reporterState; + + state.obj = data.obj; + state.path = state.path.slice(0, data.pathLen); +}; + +Reporter.prototype.enterKey = function enterKey(key) { + return this._reporterState.path.push(key); +}; + +Reporter.prototype.exitKey = function exitKey(index) { + var state = this._reporterState; + + state.path = state.path.slice(0, index - 1); +}; + +Reporter.prototype.leaveKey = function leaveKey(index, key, value) { + var state = this._reporterState; + + this.exitKey(index); + if (state.obj !== null) + state.obj[key] = value; +}; + +Reporter.prototype.path = function path() { + return this._reporterState.path.join('/'); +}; + +Reporter.prototype.enterObject = function enterObject() { + var state = this._reporterState; + + var prev = state.obj; + state.obj = {}; + return prev; +}; + +Reporter.prototype.leaveObject = function leaveObject(prev) { + var state = this._reporterState; + + var now = state.obj; + state.obj = prev; + return now; +}; + +Reporter.prototype.error = function error(msg) { + var err; + var state = this._reporterState; + + var inherited = msg instanceof ReporterError; + if (inherited) { + err = msg; + } else { + err = new ReporterError(state.path.map(function(elem) { + return '[' + JSON.stringify(elem) + ']'; + }).join(''), msg.message || msg, msg.stack); + } + + if (!state.options.partial) + throw err; + + if (!inherited) + state.errors.push(err); + + return err; +}; + +Reporter.prototype.wrapResult = function wrapResult(result) { + var state = this._reporterState; + if (!state.options.partial) + return result; + + return { + result: this.isError(result) ? null : result, + errors: state.errors + }; +}; + +function ReporterError(path, msg) { + this.path = path; + this.rethrow(msg); +}; +inherits(ReporterError, Error); + +ReporterError.prototype.rethrow = function rethrow(msg) { + this.message = msg + ' at: ' + (this.path || '(shallow)'); + if (Error.captureStackTrace) + Error.captureStackTrace(this, ReporterError); + + if (!this.stack) { + try { + // IE only adds stack when thrown + throw new Error(this.message); + } catch (e) { + this.stack = e.stack; + } + } + return this; +}; + +},{"inherits":396}],18:[function(require,module,exports){ +var constants = require('../constants'); + +exports.tagClass = { + 0: 'universal', + 1: 'application', + 2: 'context', + 3: 'private' +}; +exports.tagClassByName = constants._reverse(exports.tagClass); + +exports.tag = { + 0x00: 'end', + 0x01: 'bool', + 0x02: 'int', + 0x03: 'bitstr', + 0x04: 'octstr', + 0x05: 'null_', + 0x06: 'objid', + 0x07: 'objDesc', + 0x08: 'external', + 0x09: 'real', + 0x0a: 'enum', + 0x0b: 'embed', + 0x0c: 'utf8str', + 0x0d: 'relativeOid', + 0x10: 'seq', + 0x11: 'set', + 0x12: 'numstr', + 0x13: 'printstr', + 0x14: 't61str', + 0x15: 'videostr', + 0x16: 'ia5str', + 0x17: 'utctime', + 0x18: 'gentime', + 0x19: 'graphstr', + 0x1a: 'iso646str', + 0x1b: 'genstr', + 0x1c: 'unistr', + 0x1d: 'charstr', + 0x1e: 'bmpstr' +}; +exports.tagByName = constants._reverse(exports.tag); + +},{"../constants":19}],19:[function(require,module,exports){ +var constants = exports; + +// Helper +constants._reverse = function reverse(map) { + var res = {}; + + Object.keys(map).forEach(function(key) { + // Convert key to integer if it is stringified + if ((key | 0) == key) + key = key | 0; + + var value = map[key]; + res[value] = key; + }); + + return res; +}; + +constants.der = require('./der'); + +},{"./der":18}],20:[function(require,module,exports){ +var inherits = require('inherits'); + +var asn1 = require('../../asn1'); +var base = asn1.base; +var bignum = asn1.bignum; + +// Import DER constants +var der = asn1.constants.der; + +function DERDecoder(entity) { + this.enc = 'der'; + this.name = entity.name; + this.entity = entity; + + // Construct base tree + this.tree = new DERNode(); + this.tree._init(entity.body); +}; +module.exports = DERDecoder; + +DERDecoder.prototype.decode = function decode(data, options) { + if (!(data instanceof base.DecoderBuffer)) + data = new base.DecoderBuffer(data, options); + + return this.tree._decode(data, options); +}; + +// Tree methods + +function DERNode(parent) { + base.Node.call(this, 'der', parent); +} +inherits(DERNode, base.Node); + +DERNode.prototype._peekTag = function peekTag(buffer, tag, any) { + if (buffer.isEmpty()) + return false; + + var state = buffer.save(); + var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"'); + if (buffer.isError(decodedTag)) + return decodedTag; + + buffer.restore(state); + + return decodedTag.tag === tag || decodedTag.tagStr === tag || + (decodedTag.tagStr + 'of') === tag || any; +}; + +DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) { + var decodedTag = derDecodeTag(buffer, + 'Failed to decode tag of "' + tag + '"'); + if (buffer.isError(decodedTag)) + return decodedTag; + + var len = derDecodeLen(buffer, + decodedTag.primitive, + 'Failed to get length of "' + tag + '"'); + + // Failure + if (buffer.isError(len)) + return len; + + if (!any && + decodedTag.tag !== tag && + decodedTag.tagStr !== tag && + decodedTag.tagStr + 'of' !== tag) { + return buffer.error('Failed to match tag: "' + tag + '"'); + } + + if (decodedTag.primitive || len !== null) + return buffer.skip(len, 'Failed to match body of: "' + tag + '"'); + + // Indefinite length... find END tag + var state = buffer.save(); + var res = this._skipUntilEnd( + buffer, + 'Failed to skip indefinite length body: "' + this.tag + '"'); + if (buffer.isError(res)) + return res; + + len = buffer.offset - state.offset; + buffer.restore(state); + return buffer.skip(len, 'Failed to match body of: "' + tag + '"'); +}; + +DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) { + while (true) { + var tag = derDecodeTag(buffer, fail); + if (buffer.isError(tag)) + return tag; + var len = derDecodeLen(buffer, tag.primitive, fail); + if (buffer.isError(len)) + return len; + + var res; + if (tag.primitive || len !== null) + res = buffer.skip(len) + else + res = this._skipUntilEnd(buffer, fail); + + // Failure + if (buffer.isError(res)) + return res; + + if (tag.tagStr === 'end') + break; + } +}; + +DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder, + options) { + var result = []; + while (!buffer.isEmpty()) { + var possibleEnd = this._peekTag(buffer, 'end'); + if (buffer.isError(possibleEnd)) + return possibleEnd; + + var res = decoder.decode(buffer, 'der', options); + if (buffer.isError(res) && possibleEnd) + break; + result.push(res); + } + return result; +}; + +DERNode.prototype._decodeStr = function decodeStr(buffer, tag) { + if (tag === 'bitstr') { + var unused = buffer.readUInt8(); + if (buffer.isError(unused)) + return unused; + return { unused: unused, data: buffer.raw() }; + } else if (tag === 'bmpstr') { + var raw = buffer.raw(); + if (raw.length % 2 === 1) + return buffer.error('Decoding of string type: bmpstr length mismatch'); + + var str = ''; + for (var i = 0; i < raw.length / 2; i++) { + str += String.fromCharCode(raw.readUInt16BE(i * 2)); + } + return str; + } else if (tag === 'numstr') { + var numstr = buffer.raw().toString('ascii'); + if (!this._isNumstr(numstr)) { + return buffer.error('Decoding of string type: ' + + 'numstr unsupported characters'); + } + return numstr; + } else if (tag === 'octstr') { + return buffer.raw(); + } else if (tag === 'objDesc') { + return buffer.raw(); + } else if (tag === 'printstr') { + var printstr = buffer.raw().toString('ascii'); + if (!this._isPrintstr(printstr)) { + return buffer.error('Decoding of string type: ' + + 'printstr unsupported characters'); + } + return printstr; + } else if (/str$/.test(tag)) { + return buffer.raw().toString(); + } else { + return buffer.error('Decoding of string type: ' + tag + ' unsupported'); + } +}; + +DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) { + var result; + var identifiers = []; + var ident = 0; + while (!buffer.isEmpty()) { + var subident = buffer.readUInt8(); + ident <<= 7; + ident |= subident & 0x7f; + if ((subident & 0x80) === 0) { + identifiers.push(ident); + ident = 0; + } + } + if (subident & 0x80) + identifiers.push(ident); + + var first = (identifiers[0] / 40) | 0; + var second = identifiers[0] % 40; + + if (relative) + result = identifiers; + else + result = [first, second].concat(identifiers.slice(1)); + + if (values) { + var tmp = values[result.join(' ')]; + if (tmp === undefined) + tmp = values[result.join('.')]; + if (tmp !== undefined) + result = tmp; + } + + return result; +}; + +DERNode.prototype._decodeTime = function decodeTime(buffer, tag) { + var str = buffer.raw().toString(); + if (tag === 'gentime') { + var year = str.slice(0, 4) | 0; + var mon = str.slice(4, 6) | 0; + var day = str.slice(6, 8) | 0; + var hour = str.slice(8, 10) | 0; + var min = str.slice(10, 12) | 0; + var sec = str.slice(12, 14) | 0; + } else if (tag === 'utctime') { + var year = str.slice(0, 2) | 0; + var mon = str.slice(2, 4) | 0; + var day = str.slice(4, 6) | 0; + var hour = str.slice(6, 8) | 0; + var min = str.slice(8, 10) | 0; + var sec = str.slice(10, 12) | 0; + if (year < 70) + year = 2000 + year; + else + year = 1900 + year; + } else { + return buffer.error('Decoding ' + tag + ' time is not supported yet'); + } + + return Date.UTC(year, mon - 1, day, hour, min, sec, 0); +}; + +DERNode.prototype._decodeNull = function decodeNull(buffer) { + return null; +}; + +DERNode.prototype._decodeBool = function decodeBool(buffer) { + var res = buffer.readUInt8(); + if (buffer.isError(res)) + return res; + else + return res !== 0; +}; + +DERNode.prototype._decodeInt = function decodeInt(buffer, values) { + // Bigint, return as it is (assume big endian) + var raw = buffer.raw(); + var res = new bignum(raw); + + if (values) + res = values[res.toString(10)] || res; + + return res; +}; + +DERNode.prototype._use = function use(entity, obj) { + if (typeof entity === 'function') + entity = entity(obj); + return entity._getDecoder('der').tree; +}; + +// Utility methods + +function derDecodeTag(buf, fail) { + var tag = buf.readUInt8(fail); + if (buf.isError(tag)) + return tag; + + var cls = der.tagClass[tag >> 6]; + var primitive = (tag & 0x20) === 0; + + // Multi-octet tag - load + if ((tag & 0x1f) === 0x1f) { + var oct = tag; + tag = 0; + while ((oct & 0x80) === 0x80) { + oct = buf.readUInt8(fail); + if (buf.isError(oct)) + return oct; + + tag <<= 7; + tag |= oct & 0x7f; + } + } else { + tag &= 0x1f; + } + var tagStr = der.tag[tag]; + + return { + cls: cls, + primitive: primitive, + tag: tag, + tagStr: tagStr + }; +} + +function derDecodeLen(buf, primitive, fail) { + var len = buf.readUInt8(fail); + if (buf.isError(len)) + return len; + + // Indefinite form + if (!primitive && len === 0x80) + return null; + + // Definite form + if ((len & 0x80) === 0) { + // Short form + return len; + } + + // Long form + var num = len & 0x7f; + if (num > 4) + return buf.error('length octect is too long'); + + len = 0; + for (var i = 0; i < num; i++) { + len <<= 8; + var j = buf.readUInt8(fail); + if (buf.isError(j)) + return j; + len |= j; + } + + return len; +} + +},{"../../asn1":12,"inherits":396}],21:[function(require,module,exports){ +var decoders = exports; + +decoders.der = require('./der'); +decoders.pem = require('./pem'); + +},{"./der":20,"./pem":22}],22:[function(require,module,exports){ +var inherits = require('inherits'); +var Buffer = require('buffer').Buffer; + +var DERDecoder = require('./der'); + +function PEMDecoder(entity) { + DERDecoder.call(this, entity); + this.enc = 'pem'; +}; +inherits(PEMDecoder, DERDecoder); +module.exports = PEMDecoder; + +PEMDecoder.prototype.decode = function decode(data, options) { + var lines = data.toString().split(/[\r\n]+/g); + + var label = options.label.toUpperCase(); + + var re = /^-----(BEGIN|END) ([^-]+)-----$/; + var start = -1; + var end = -1; + for (var i = 0; i < lines.length; i++) { + var match = lines[i].match(re); + if (match === null) + continue; + + if (match[2] !== label) + continue; + + if (start === -1) { + if (match[1] !== 'BEGIN') + break; + start = i; + } else { + if (match[1] !== 'END') + break; + end = i; + break; + } + } + if (start === -1 || end === -1) + throw new Error('PEM section not found for: ' + label); + + var base64 = lines.slice(start + 1, end).join(''); + // Remove excessive symbols + base64.replace(/[^a-z0-9\+\/=]+/gi, ''); + + var input = new Buffer(base64, 'base64'); + return DERDecoder.prototype.decode.call(this, input, options); +}; + +},{"./der":20,"buffer":146,"inherits":396}],23:[function(require,module,exports){ +var inherits = require('inherits'); +var Buffer = require('buffer').Buffer; + +var asn1 = require('../../asn1'); +var base = asn1.base; + +// Import DER constants +var der = asn1.constants.der; + +function DEREncoder(entity) { + this.enc = 'der'; + this.name = entity.name; + this.entity = entity; + + // Construct base tree + this.tree = new DERNode(); + this.tree._init(entity.body); +}; +module.exports = DEREncoder; + +DEREncoder.prototype.encode = function encode(data, reporter) { + return this.tree._encode(data, reporter).join(); +}; + +// Tree methods + +function DERNode(parent) { + base.Node.call(this, 'der', parent); +} +inherits(DERNode, base.Node); + +DERNode.prototype._encodeComposite = function encodeComposite(tag, + primitive, + cls, + content) { + var encodedTag = encodeTag(tag, primitive, cls, this.reporter); + + // Short form + if (content.length < 0x80) { + var header = new Buffer(2); + header[0] = encodedTag; + header[1] = content.length; + return this._createEncoderBuffer([ header, content ]); + } + + // Long form + // Count octets required to store length + var lenOctets = 1; + for (var i = content.length; i >= 0x100; i >>= 8) + lenOctets++; + + var header = new Buffer(1 + 1 + lenOctets); + header[0] = encodedTag; + header[1] = 0x80 | lenOctets; + + for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8) + header[i] = j & 0xff; + + return this._createEncoderBuffer([ header, content ]); +}; + +DERNode.prototype._encodeStr = function encodeStr(str, tag) { + if (tag === 'bitstr') { + return this._createEncoderBuffer([ str.unused | 0, str.data ]); + } else if (tag === 'bmpstr') { + var buf = new Buffer(str.length * 2); + for (var i = 0; i < str.length; i++) { + buf.writeUInt16BE(str.charCodeAt(i), i * 2); + } + return this._createEncoderBuffer(buf); + } else if (tag === 'numstr') { + if (!this._isNumstr(str)) { + return this.reporter.error('Encoding of string type: numstr supports ' + + 'only digits and space'); + } + return this._createEncoderBuffer(str); + } else if (tag === 'printstr') { + if (!this._isPrintstr(str)) { + return this.reporter.error('Encoding of string type: printstr supports ' + + 'only latin upper and lower case letters, ' + + 'digits, space, apostrophe, left and rigth ' + + 'parenthesis, plus sign, comma, hyphen, ' + + 'dot, slash, colon, equal sign, ' + + 'question mark'); + } + return this._createEncoderBuffer(str); + } else if (/str$/.test(tag)) { + return this._createEncoderBuffer(str); + } else if (tag === 'objDesc') { + return this._createEncoderBuffer(str); + } else { + return this.reporter.error('Encoding of string type: ' + tag + + ' unsupported'); + } +}; + +DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) { + if (typeof id === 'string') { + if (!values) + return this.reporter.error('string objid given, but no values map found'); + if (!values.hasOwnProperty(id)) + return this.reporter.error('objid not found in values map'); + id = values[id].split(/[\s\.]+/g); + for (var i = 0; i < id.length; i++) + id[i] |= 0; + } else if (Array.isArray(id)) { + id = id.slice(); + for (var i = 0; i < id.length; i++) + id[i] |= 0; + } + + if (!Array.isArray(id)) { + return this.reporter.error('objid() should be either array or string, ' + + 'got: ' + JSON.stringify(id)); + } + + if (!relative) { + if (id[1] >= 40) + return this.reporter.error('Second objid identifier OOB'); + id.splice(0, 2, id[0] * 40 + id[1]); + } + + // Count number of octets + var size = 0; + for (var i = 0; i < id.length; i++) { + var ident = id[i]; + for (size++; ident >= 0x80; ident >>= 7) + size++; + } + + var objid = new Buffer(size); + var offset = objid.length - 1; + for (var i = id.length - 1; i >= 0; i--) { + var ident = id[i]; + objid[offset--] = ident & 0x7f; + while ((ident >>= 7) > 0) + objid[offset--] = 0x80 | (ident & 0x7f); + } + + return this._createEncoderBuffer(objid); +}; + +function two(num) { + if (num < 10) + return '0' + num; + else + return num; +} + +DERNode.prototype._encodeTime = function encodeTime(time, tag) { + var str; + var date = new Date(time); + + if (tag === 'gentime') { + str = [ + two(date.getFullYear()), + two(date.getUTCMonth() + 1), + two(date.getUTCDate()), + two(date.getUTCHours()), + two(date.getUTCMinutes()), + two(date.getUTCSeconds()), + 'Z' + ].join(''); + } else if (tag === 'utctime') { + str = [ + two(date.getFullYear() % 100), + two(date.getUTCMonth() + 1), + two(date.getUTCDate()), + two(date.getUTCHours()), + two(date.getUTCMinutes()), + two(date.getUTCSeconds()), + 'Z' + ].join(''); + } else { + this.reporter.error('Encoding ' + tag + ' time is not supported yet'); + } + + return this._encodeStr(str, 'octstr'); +}; + +DERNode.prototype._encodeNull = function encodeNull() { + return this._createEncoderBuffer(''); +}; + +DERNode.prototype._encodeInt = function encodeInt(num, values) { + if (typeof num === 'string') { + if (!values) + return this.reporter.error('String int or enum given, but no values map'); + if (!values.hasOwnProperty(num)) { + return this.reporter.error('Values map doesn\'t contain: ' + + JSON.stringify(num)); + } + num = values[num]; + } + + // Bignum, assume big endian + if (typeof num !== 'number' && !Buffer.isBuffer(num)) { + var numArray = num.toArray(); + if (!num.sign && numArray[0] & 0x80) { + numArray.unshift(0); + } + num = new Buffer(numArray); + } + + if (Buffer.isBuffer(num)) { + var size = num.length; + if (num.length === 0) + size++; + + var out = new Buffer(size); + num.copy(out); + if (num.length === 0) + out[0] = 0 + return this._createEncoderBuffer(out); + } + + if (num < 0x80) + return this._createEncoderBuffer(num); + + if (num < 0x100) + return this._createEncoderBuffer([0, num]); + + var size = 1; + for (var i = num; i >= 0x100; i >>= 8) + size++; + + var out = new Array(size); + for (var i = out.length - 1; i >= 0; i--) { + out[i] = num & 0xff; + num >>= 8; + } + if(out[0] & 0x80) { + out.unshift(0); + } + + return this._createEncoderBuffer(new Buffer(out)); +}; + +DERNode.prototype._encodeBool = function encodeBool(value) { + return this._createEncoderBuffer(value ? 0xff : 0); +}; + +DERNode.prototype._use = function use(entity, obj) { + if (typeof entity === 'function') + entity = entity(obj); + return entity._getEncoder('der').tree; +}; + +DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) { + var state = this._baseState; + var i; + if (state['default'] === null) + return false; + + var data = dataBuffer.join(); + if (state.defaultBuffer === undefined) + state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join(); + + if (data.length !== state.defaultBuffer.length) + return false; + + for (i=0; i < data.length; i++) + if (data[i] !== state.defaultBuffer[i]) + return false; + + return true; +}; + +// Utility methods + +function encodeTag(tag, primitive, cls, reporter) { + var res; + + if (tag === 'seqof') + tag = 'seq'; + else if (tag === 'setof') + tag = 'set'; + + if (der.tagByName.hasOwnProperty(tag)) + res = der.tagByName[tag]; + else if (typeof tag === 'number' && (tag | 0) === tag) + res = tag; + else + return reporter.error('Unknown tag: ' + tag); + + if (res >= 0x1f) + return reporter.error('Multi-octet tag encoding unsupported'); + + if (!primitive) + res |= 0x20; + + res |= (der.tagClassByName[cls || 'universal'] << 6); + + return res; +} + +},{"../../asn1":12,"buffer":146,"inherits":396}],24:[function(require,module,exports){ +var encoders = exports; + +encoders.der = require('./der'); +encoders.pem = require('./pem'); + +},{"./der":23,"./pem":25}],25:[function(require,module,exports){ +var inherits = require('inherits'); + +var DEREncoder = require('./der'); + +function PEMEncoder(entity) { + DEREncoder.call(this, entity); + this.enc = 'pem'; +}; +inherits(PEMEncoder, DEREncoder); +module.exports = PEMEncoder; + +PEMEncoder.prototype.encode = function encode(data, options) { + var buf = DEREncoder.prototype.encode.call(this, data); + + var p = buf.toString('base64'); + var out = [ '-----BEGIN ' + options.label + '-----' ]; + for (var i = 0; i < p.length; i += 64) + out.push(p.slice(i, i + 64)); + out.push('-----END ' + options.label + '-----'); + return out.join('\n'); +}; + +},{"./der":23,"inherits":396}],26:[function(require,module,exports){ +(function (global){ +'use strict'; + +var objectAssign = require('object-assign'); + +// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js +// original notice: + +/*! + * The buffer module from node.js, for the browser. + * + * @author Feross Aboukhadijeh + * @license MIT + */ +function compare(a, b) { + if (a === b) { + return 0; + } + + var x = a.length; + var y = b.length; + + for (var i = 0, len = Math.min(x, y); i < len; ++i) { + if (a[i] !== b[i]) { + x = a[i]; + y = b[i]; + break; + } + } + + if (x < y) { + return -1; + } + if (y < x) { + return 1; + } + return 0; +} +function isBuffer(b) { + if (global.Buffer && typeof global.Buffer.isBuffer === 'function') { + return global.Buffer.isBuffer(b); + } + return !!(b != null && b._isBuffer); +} + +// based on node assert, original notice: +// NB: The URL to the CommonJS spec is kept just for tradition. +// node-assert has evolved a lot since then, both in API and behavior. + +// http://wiki.commonjs.org/wiki/Unit_Testing/1.0 +// +// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8! +// +// Originally from narwhal.js (http://narwhaljs.org) +// Copyright (c) 2009 Thomas Robinson <280north.com> +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the 'Software'), to +// deal in the Software without restriction, including without limitation the +// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +// sell copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +var util = require('util/'); +var hasOwn = Object.prototype.hasOwnProperty; +var pSlice = Array.prototype.slice; +var functionsHaveNames = (function () { + return function foo() {}.name === 'foo'; +}()); +function pToString (obj) { + return Object.prototype.toString.call(obj); +} +function isView(arrbuf) { + if (isBuffer(arrbuf)) { + return false; + } + if (typeof global.ArrayBuffer !== 'function') { + return false; + } + if (typeof ArrayBuffer.isView === 'function') { + return ArrayBuffer.isView(arrbuf); + } + if (!arrbuf) { + return false; + } + if (arrbuf instanceof DataView) { + return true; + } + if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) { + return true; + } + return false; +} +// 1. The assert module provides functions that throw +// AssertionError's when particular conditions are not met. The +// assert module must conform to the following interface. + +var assert = module.exports = ok; + +// 2. The AssertionError is defined in assert. +// new assert.AssertionError({ message: message, +// actual: actual, +// expected: expected }) + +var regex = /\s*function\s+([^\(\s]*)\s*/; +// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js +function getName(func) { + if (!util.isFunction(func)) { + return; + } + if (functionsHaveNames) { + return func.name; + } + var str = func.toString(); + var match = str.match(regex); + return match && match[1]; +} +assert.AssertionError = function AssertionError(options) { + this.name = 'AssertionError'; + this.actual = options.actual; + this.expected = options.expected; + this.operator = options.operator; + if (options.message) { + this.message = options.message; + this.generatedMessage = false; + } else { + this.message = getMessage(this); + this.generatedMessage = true; + } + var stackStartFunction = options.stackStartFunction || fail; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, stackStartFunction); + } else { + // non v8 browsers so we can have a stacktrace + var err = new Error(); + if (err.stack) { + var out = err.stack; + + // try to strip useless frames + var fn_name = getName(stackStartFunction); + var idx = out.indexOf('\n' + fn_name); + if (idx >= 0) { + // once we have located the function frame + // we need to strip out everything before it (and its line) + var next_line = out.indexOf('\n', idx + 1); + out = out.substring(next_line + 1); + } + + this.stack = out; + } + } +}; + +// assert.AssertionError instanceof Error +util.inherits(assert.AssertionError, Error); + +function truncate(s, n) { + if (typeof s === 'string') { + return s.length < n ? s : s.slice(0, n); + } else { + return s; + } +} +function inspect(something) { + if (functionsHaveNames || !util.isFunction(something)) { + return util.inspect(something); + } + var rawname = getName(something); + var name = rawname ? ': ' + rawname : ''; + return '[Function' + name + ']'; +} +function getMessage(self) { + return truncate(inspect(self.actual), 128) + ' ' + + self.operator + ' ' + + truncate(inspect(self.expected), 128); +} + +// At present only the three keys mentioned above are used and +// understood by the spec. Implementations or sub modules can pass +// other keys to the AssertionError's constructor - they will be +// ignored. + +// 3. All of the following functions must throw an AssertionError +// when a corresponding condition is not met, with a message that +// may be undefined if not provided. All assertion methods provide +// both the actual and expected values to the assertion error for +// display purposes. + +function fail(actual, expected, message, operator, stackStartFunction) { + throw new assert.AssertionError({ + message: message, + actual: actual, + expected: expected, + operator: operator, + stackStartFunction: stackStartFunction + }); +} + +// EXTENSION! allows for well behaved errors defined elsewhere. +assert.fail = fail; + +// 4. Pure assertion tests whether a value is truthy, as determined +// by !!guard. +// assert.ok(guard, message_opt); +// This statement is equivalent to assert.equal(true, !!guard, +// message_opt);. To test strictly for the value true, use +// assert.strictEqual(true, guard, message_opt);. + +function ok(value, message) { + if (!value) fail(value, true, message, '==', assert.ok); +} +assert.ok = ok; + +// 5. The equality assertion tests shallow, coercive equality with +// ==. +// assert.equal(actual, expected, message_opt); + +assert.equal = function equal(actual, expected, message) { + if (actual != expected) fail(actual, expected, message, '==', assert.equal); +}; + +// 6. The non-equality assertion tests for whether two objects are not equal +// with != assert.notEqual(actual, expected, message_opt); + +assert.notEqual = function notEqual(actual, expected, message) { + if (actual == expected) { + fail(actual, expected, message, '!=', assert.notEqual); + } +}; + +// 7. The equivalence assertion tests a deep equality relation. +// assert.deepEqual(actual, expected, message_opt); + +assert.deepEqual = function deepEqual(actual, expected, message) { + if (!_deepEqual(actual, expected, false)) { + fail(actual, expected, message, 'deepEqual', assert.deepEqual); + } +}; + +assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) { + if (!_deepEqual(actual, expected, true)) { + fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual); + } +}; + +function _deepEqual(actual, expected, strict, memos) { + // 7.1. All identical values are equivalent, as determined by ===. + if (actual === expected) { + return true; + } else if (isBuffer(actual) && isBuffer(expected)) { + return compare(actual, expected) === 0; + + // 7.2. If the expected value is a Date object, the actual value is + // equivalent if it is also a Date object that refers to the same time. + } else if (util.isDate(actual) && util.isDate(expected)) { + return actual.getTime() === expected.getTime(); + + // 7.3 If the expected value is a RegExp object, the actual value is + // equivalent if it is also a RegExp object with the same source and + // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`). + } else if (util.isRegExp(actual) && util.isRegExp(expected)) { + return actual.source === expected.source && + actual.global === expected.global && + actual.multiline === expected.multiline && + actual.lastIndex === expected.lastIndex && + actual.ignoreCase === expected.ignoreCase; + + // 7.4. Other pairs that do not both pass typeof value == 'object', + // equivalence is determined by ==. + } else if ((actual === null || typeof actual !== 'object') && + (expected === null || typeof expected !== 'object')) { + return strict ? actual === expected : actual == expected; + + // If both values are instances of typed arrays, wrap their underlying + // ArrayBuffers in a Buffer each to increase performance + // This optimization requires the arrays to have the same type as checked by + // Object.prototype.toString (aka pToString). Never perform binary + // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their + // bit patterns are not identical. + } else if (isView(actual) && isView(expected) && + pToString(actual) === pToString(expected) && + !(actual instanceof Float32Array || + actual instanceof Float64Array)) { + return compare(new Uint8Array(actual.buffer), + new Uint8Array(expected.buffer)) === 0; + + // 7.5 For all other Object pairs, including Array objects, equivalence is + // determined by having the same number of owned properties (as verified + // with Object.prototype.hasOwnProperty.call), the same set of keys + // (although not necessarily the same order), equivalent values for every + // corresponding key, and an identical 'prototype' property. Note: this + // accounts for both named and indexed properties on Arrays. + } else if (isBuffer(actual) !== isBuffer(expected)) { + return false; + } else { + memos = memos || {actual: [], expected: []}; + + var actualIndex = memos.actual.indexOf(actual); + if (actualIndex !== -1) { + if (actualIndex === memos.expected.indexOf(expected)) { + return true; + } + } + + memos.actual.push(actual); + memos.expected.push(expected); + + return objEquiv(actual, expected, strict, memos); + } +} + +function isArguments(object) { + return Object.prototype.toString.call(object) == '[object Arguments]'; +} + +function objEquiv(a, b, strict, actualVisitedObjects) { + if (a === null || a === undefined || b === null || b === undefined) + return false; + // if one is a primitive, the other must be same + if (util.isPrimitive(a) || util.isPrimitive(b)) + return a === b; + if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b)) + return false; + var aIsArgs = isArguments(a); + var bIsArgs = isArguments(b); + if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs)) + return false; + if (aIsArgs) { + a = pSlice.call(a); + b = pSlice.call(b); + return _deepEqual(a, b, strict); + } + var ka = objectKeys(a); + var kb = objectKeys(b); + var key, i; + // having the same number of owned properties (keys incorporates + // hasOwnProperty) + if (ka.length !== kb.length) + return false; + //the same set of keys (although not necessarily the same order), + ka.sort(); + kb.sort(); + //~~~cheap key test + for (i = ka.length - 1; i >= 0; i--) { + if (ka[i] !== kb[i]) + return false; + } + //equivalent values for every corresponding key, and + //~~~possibly expensive deep test + for (i = ka.length - 1; i >= 0; i--) { + key = ka[i]; + if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects)) + return false; + } + return true; +} + +// 8. The non-equivalence assertion tests for any deep inequality. +// assert.notDeepEqual(actual, expected, message_opt); + +assert.notDeepEqual = function notDeepEqual(actual, expected, message) { + if (_deepEqual(actual, expected, false)) { + fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); + } +}; + +assert.notDeepStrictEqual = notDeepStrictEqual; +function notDeepStrictEqual(actual, expected, message) { + if (_deepEqual(actual, expected, true)) { + fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual); + } +} + + +// 9. The strict equality assertion tests strict equality, as determined by ===. +// assert.strictEqual(actual, expected, message_opt); + +assert.strictEqual = function strictEqual(actual, expected, message) { + if (actual !== expected) { + fail(actual, expected, message, '===', assert.strictEqual); + } +}; + +// 10. The strict non-equality assertion tests for strict inequality, as +// determined by !==. assert.notStrictEqual(actual, expected, message_opt); + +assert.notStrictEqual = function notStrictEqual(actual, expected, message) { + if (actual === expected) { + fail(actual, expected, message, '!==', assert.notStrictEqual); + } +}; + +function expectedException(actual, expected) { + if (!actual || !expected) { + return false; + } + + if (Object.prototype.toString.call(expected) == '[object RegExp]') { + return expected.test(actual); + } + + try { + if (actual instanceof expected) { + return true; + } + } catch (e) { + // Ignore. The instanceof check doesn't work for arrow functions. + } + + if (Error.isPrototypeOf(expected)) { + return false; + } + + return expected.call({}, actual) === true; +} + +function _tryBlock(block) { + var error; + try { + block(); + } catch (e) { + error = e; + } + return error; +} + +function _throws(shouldThrow, block, expected, message) { + var actual; + + if (typeof block !== 'function') { + throw new TypeError('"block" argument must be a function'); + } + + if (typeof expected === 'string') { + message = expected; + expected = null; + } + + actual = _tryBlock(block); + + message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + + (message ? ' ' + message : '.'); + + if (shouldThrow && !actual) { + fail(actual, expected, 'Missing expected exception' + message); + } + + var userProvidedMessage = typeof message === 'string'; + var isUnwantedException = !shouldThrow && util.isError(actual); + var isUnexpectedException = !shouldThrow && actual && !expected; + + if ((isUnwantedException && + userProvidedMessage && + expectedException(actual, expected)) || + isUnexpectedException) { + fail(actual, expected, 'Got unwanted exception' + message); + } + + if ((shouldThrow && actual && expected && + !expectedException(actual, expected)) || (!shouldThrow && actual)) { + throw actual; + } +} + +// 11. Expected to throw an error: +// assert.throws(block, Error_opt, message_opt); + +assert.throws = function(block, /*optional*/error, /*optional*/message) { + _throws(true, block, error, message); +}; + +// EXTENSION! This is annoying to write outside this module. +assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) { + _throws(false, block, error, message); +}; + +assert.ifError = function(err) { if (err) throw err; }; + +// Expose a strict only variant of assert +function strict(value, message) { + if (!value) fail(value, true, message, '==', strict); +} +assert.strict = objectAssign(strict, assert, { + equal: assert.strictEqual, + deepEqual: assert.deepStrictEqual, + notEqual: assert.notStrictEqual, + notDeepEqual: assert.notDeepStrictEqual +}); +assert.strict.strict = assert.strict; + +var objectKeys = Object.keys || function (obj) { + var keys = []; + for (var key in obj) { + if (hasOwn.call(obj, key)) keys.push(key); + } + return keys; +}; + +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"object-assign":665,"util/":29}],27:[function(require,module,exports){ +if (typeof Object.create === 'function') { + // implementation from standard node.js 'util' module + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + ctor.prototype = Object.create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); + }; +} else { + // old school shim for old browsers + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + var TempCtor = function () {} + TempCtor.prototype = superCtor.prototype + ctor.prototype = new TempCtor() + ctor.prototype.constructor = ctor + } +} + +},{}],28:[function(require,module,exports){ +module.exports = function isBuffer(arg) { + return arg && typeof arg === 'object' + && typeof arg.copy === 'function' + && typeof arg.fill === 'function' + && typeof arg.readUInt8 === 'function'; +} +},{}],29:[function(require,module,exports){ +(function (process,global){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (!isString(f)) { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(inspect(arguments[i])); + } + return objects.join(' '); + } + + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': + try { + return JSON.stringify(args[i++]); + } catch (_) { + return '[Circular]'; + } + default: + return x; + } + }); + for (var x = args[i]; i < len; x = args[++i]) { + if (isNull(x) || !isObject(x)) { + str += ' ' + x; + } else { + str += ' ' + inspect(x); + } + } + return str; +}; + + +// Mark that a method should not be used. +// Returns a modified function which warns once by default. +// If --no-deprecation is set, then it is a no-op. +exports.deprecate = function(fn, msg) { + // Allow for deprecating things in the process of starting up. + if (isUndefined(global.process)) { + return function() { + return exports.deprecate(fn, msg).apply(this, arguments); + }; + } + + if (process.noDeprecation === true) { + return fn; + } + + var warned = false; + function deprecated() { + if (!warned) { + if (process.throwDeprecation) { + throw new Error(msg); + } else if (process.traceDeprecation) { + console.trace(msg); + } else { + console.error(msg); + } + warned = true; + } + return fn.apply(this, arguments); + } + + return deprecated; +}; + + +var debugs = {}; +var debugEnviron; +exports.debuglog = function(set) { + if (isUndefined(debugEnviron)) + debugEnviron = process.env.NODE_DEBUG || ''; + set = set.toUpperCase(); + if (!debugs[set]) { + if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { + var pid = process.pid; + debugs[set] = function() { + var msg = exports.format.apply(exports, arguments); + console.error('%s %d: %s', set, pid, msg); + }; + } else { + debugs[set] = function() {}; + } + } + return debugs[set]; +}; + + +/** + * Echos the value of a value. Trys to print the value out + * in the best way possible given the different types. + * + * @param {Object} obj The object to print out. + * @param {Object} opts Optional options object that alters the output. + */ +/* legacy: obj, showHidden, depth, colors*/ +function inspect(obj, opts) { + // default options + var ctx = { + seen: [], + stylize: stylizeNoColor + }; + // legacy... + if (arguments.length >= 3) ctx.depth = arguments[2]; + if (arguments.length >= 4) ctx.colors = arguments[3]; + if (isBoolean(opts)) { + // legacy... + ctx.showHidden = opts; + } else if (opts) { + // got an "options" object + exports._extend(ctx, opts); + } + // set default options + if (isUndefined(ctx.showHidden)) ctx.showHidden = false; + if (isUndefined(ctx.depth)) ctx.depth = 2; + if (isUndefined(ctx.colors)) ctx.colors = false; + if (isUndefined(ctx.customInspect)) ctx.customInspect = true; + if (ctx.colors) ctx.stylize = stylizeWithColor; + return formatValue(ctx, obj, ctx.depth); +} +exports.inspect = inspect; + + +// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics +inspect.colors = { + 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] +}; + +// Don't use 'blue' not visible on cmd.exe +inspect.styles = { + 'special': 'cyan', + 'number': 'yellow', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' +}; + + +function stylizeWithColor(str, styleType) { + var style = inspect.styles[styleType]; + + if (style) { + return '\u001b[' + inspect.colors[style][0] + 'm' + str + + '\u001b[' + inspect.colors[style][1] + 'm'; + } else { + return str; + } +} + + +function stylizeNoColor(str, styleType) { + return str; +} + + +function arrayToHash(array) { + var hash = {}; + + array.forEach(function(val, idx) { + hash[val] = true; + }); + + return hash; +} + + +function formatValue(ctx, value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (ctx.customInspect && + value && + isFunction(value.inspect) && + // Filter out the util module, it's inspect function is special + value.inspect !== exports.inspect && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + var ret = value.inspect(recurseTimes, ctx); + if (!isString(ret)) { + ret = formatValue(ctx, ret, recurseTimes); + } + return ret; + } + + // Primitive types cannot have properties + var primitive = formatPrimitive(ctx, value); + if (primitive) { + return primitive; + } + + // Look up the keys of the object. + var keys = Object.keys(value); + var visibleKeys = arrayToHash(keys); + + if (ctx.showHidden) { + keys = Object.getOwnPropertyNames(value); + } + + // IE doesn't make error fields non-enumerable + // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx + if (isError(value) + && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { + return formatError(value); + } + + // Some type of object without properties can be shortcutted. + if (keys.length === 0) { + if (isFunction(value)) { + var name = value.name ? ': ' + value.name : ''; + return ctx.stylize('[Function' + name + ']', 'special'); + } + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } + if (isDate(value)) { + return ctx.stylize(Date.prototype.toString.call(value), 'date'); + } + if (isError(value)) { + return formatError(value); + } + } + + var base = '', array = false, braces = ['{', '}']; + + // Make Array say that they are Array + if (isArray(value)) { + array = true; + braces = ['[', ']']; + } + + // Make functions say that they are functions + if (isFunction(value)) { + var n = value.name ? ': ' + value.name : ''; + base = ' [Function' + n + ']'; + } + + // Make RegExps say that they are RegExps + if (isRegExp(value)) { + base = ' ' + RegExp.prototype.toString.call(value); + } + + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + Date.prototype.toUTCString.call(value); + } + + // Make error with message first say the error + if (isError(value)) { + base = ' ' + formatError(value); + } + + if (keys.length === 0 && (!array || value.length == 0)) { + return braces[0] + base + braces[1]; + } + + if (recurseTimes < 0) { + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } else { + return ctx.stylize('[Object]', 'special'); + } + } + + ctx.seen.push(value); + + var output; + if (array) { + output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); + } else { + output = keys.map(function(key) { + return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); + }); + } + + ctx.seen.pop(); + + return reduceToSingleString(output, base, braces); +} + + +function formatPrimitive(ctx, value) { + if (isUndefined(value)) + return ctx.stylize('undefined', 'undefined'); + if (isString(value)) { + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return ctx.stylize(simple, 'string'); + } + if (isNumber(value)) + return ctx.stylize('' + value, 'number'); + if (isBoolean(value)) + return ctx.stylize('' + value, 'boolean'); + // For some reason typeof null is "object", so special case here. + if (isNull(value)) + return ctx.stylize('null', 'null'); +} + + +function formatError(value) { + return '[' + Error.prototype.toString.call(value) + ']'; +} + + +function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { + var output = []; + for (var i = 0, l = value.length; i < l; ++i) { + if (hasOwnProperty(value, String(i))) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + String(i), true)); + } else { + output.push(''); + } + } + keys.forEach(function(key) { + if (!key.match(/^\d+$/)) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + key, true)); + } + }); + return output; +} + + +function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { + var name, str, desc; + desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; + if (desc.get) { + if (desc.set) { + str = ctx.stylize('[Getter/Setter]', 'special'); + } else { + str = ctx.stylize('[Getter]', 'special'); + } + } else { + if (desc.set) { + str = ctx.stylize('[Setter]', 'special'); + } + } + if (!hasOwnProperty(visibleKeys, key)) { + name = '[' + key + ']'; + } + if (!str) { + if (ctx.seen.indexOf(desc.value) < 0) { + if (isNull(recurseTimes)) { + str = formatValue(ctx, desc.value, null); + } else { + str = formatValue(ctx, desc.value, recurseTimes - 1); + } + if (str.indexOf('\n') > -1) { + if (array) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = ctx.stylize('[Circular]', 'special'); + } + } + if (isUndefined(name)) { + if (array && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = ctx.stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = ctx.stylize(name, 'string'); + } + } + + return name + ': ' + str; +} + + +function reduceToSingleString(output, base, braces) { + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; + }, 0); + + if (length > 60) { + return braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; + } + + return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; +} + + +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. +function isArray(ar) { + return Array.isArray(ar); +} +exports.isArray = isArray; + +function isBoolean(arg) { + return typeof arg === 'boolean'; +} +exports.isBoolean = isBoolean; + +function isNull(arg) { + return arg === null; +} +exports.isNull = isNull; + +function isNullOrUndefined(arg) { + return arg == null; +} +exports.isNullOrUndefined = isNullOrUndefined; + +function isNumber(arg) { + return typeof arg === 'number'; +} +exports.isNumber = isNumber; + +function isString(arg) { + return typeof arg === 'string'; +} +exports.isString = isString; + +function isSymbol(arg) { + return typeof arg === 'symbol'; +} +exports.isSymbol = isSymbol; + +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; + +function isRegExp(re) { + return isObject(re) && objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; + +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; + +function isDate(d) { + return isObject(d) && objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; + +function isError(e) { + return isObject(e) && + (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; + +function isFunction(arg) { + return typeof arg === 'function'; +} +exports.isFunction = isFunction; + +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; +} +exports.isPrimitive = isPrimitive; + +exports.isBuffer = require('./support/isBuffer'); + +function objectToString(o) { + return Object.prototype.toString.call(o); +} + + +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); +} + + +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; + +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); +} + + +// log is just a thin wrapper to console.log that prepends a timestamp +exports.log = function() { + console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); +}; + + +/** + * Inherit the prototype methods from one constructor into another. + * + * The Function.prototype.inherits from lang.js rewritten as a standalone + * function (not on Function.prototype). NOTE: If this file is to be loaded + * during bootstrapping this function needs to be rewritten using some native + * functions as prototype setup using normal JavaScript does not work as + * expected during bootstrapping (see mirror.js in r114903). + * + * @param {function} ctor Constructor function which needs to inherit the + * prototype. + * @param {function} superCtor Constructor function to inherit prototype from. + */ +exports.inherits = require('inherits'); + +exports._extend = function(origin, add) { + // Don't do anything if add isn't an object + if (!add || !isObject(add)) return origin; + + var keys = Object.keys(add); + var i = keys.length; + while (i--) { + origin[keys[i]] = add[keys[i]]; + } + return origin; +}; + +function hasOwnProperty(obj, prop) { + return Object.prototype.hasOwnProperty.call(obj, prop); +} + +}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./support/isBuffer":28,"_process":678,"inherits":27}],30:[function(require,module,exports){ +module.exports = require('./lib/axios'); +},{"./lib/axios":32}],31:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); +var settle = require('./../core/settle'); +var buildURL = require('./../helpers/buildURL'); +var parseHeaders = require('./../helpers/parseHeaders'); +var isURLSameOrigin = require('./../helpers/isURLSameOrigin'); +var createError = require('../core/createError'); + +module.exports = function xhrAdapter(config) { + return new Promise(function dispatchXhrRequest(resolve, reject) { + var requestData = config.data; + var requestHeaders = config.headers; + + if (utils.isFormData(requestData)) { + delete requestHeaders['Content-Type']; // Let the browser set it + } + + var request = new XMLHttpRequest(); + + // HTTP basic authentication + if (config.auth) { + var username = config.auth.username || ''; + var password = config.auth.password || ''; + requestHeaders.Authorization = 'Basic ' + btoa(username + ':' + password); + } + + request.open(config.method.toUpperCase(), buildURL(config.url, config.params, config.paramsSerializer), true); + + // Set the request timeout in MS + request.timeout = config.timeout; + + // Listen for ready state + request.onreadystatechange = function handleLoad() { + if (!request || request.readyState !== 4) { + return; + } + + // The request errored out and we didn't get a response, this will be + // handled by onerror instead + // With one exception: request that using file: protocol, most browsers + // will return status as 0 even though it's a successful request + if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { + return; + } + + // Prepare the response + var responseHeaders = 'getAllResponseHeaders' in request ? parseHeaders(request.getAllResponseHeaders()) : null; + var responseData = !config.responseType || config.responseType === 'text' ? request.responseText : request.response; + var response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config: config, + request: request + }; + + settle(resolve, reject, response); + + // Clean up request + request = null; + }; + + // Handle low level network errors + request.onerror = function handleError() { + // Real errors are hidden from us by the browser + // onerror should only fire if it's a network error + reject(createError('Network Error', config, null, request)); + + // Clean up request + request = null; + }; + + // Handle timeout + request.ontimeout = function handleTimeout() { + reject(createError('timeout of ' + config.timeout + 'ms exceeded', config, 'ECONNABORTED', + request)); + + // Clean up request + request = null; + }; + + // Add xsrf header + // This is only done if running in a standard browser environment. + // Specifically not if we're in a web worker, or react-native. + if (utils.isStandardBrowserEnv()) { + var cookies = require('./../helpers/cookies'); + + // Add xsrf header + var xsrfValue = (config.withCredentials || isURLSameOrigin(config.url)) && config.xsrfCookieName ? + cookies.read(config.xsrfCookieName) : + undefined; + + if (xsrfValue) { + requestHeaders[config.xsrfHeaderName] = xsrfValue; + } + } + + // Add headers to the request + if ('setRequestHeader' in request) { + utils.forEach(requestHeaders, function setRequestHeader(val, key) { + if (typeof requestData === 'undefined' && key.toLowerCase() === 'content-type') { + // Remove Content-Type if data is undefined + delete requestHeaders[key]; + } else { + // Otherwise add header to the request + request.setRequestHeader(key, val); + } + }); + } + + // Add withCredentials to request if needed + if (config.withCredentials) { + request.withCredentials = true; + } + + // Add responseType to request if needed + if (config.responseType) { + try { + request.responseType = config.responseType; + } catch (e) { + // Expected DOMException thrown by browsers not compatible XMLHttpRequest Level 2. + // But, this can be suppressed for 'json' type as it can be parsed by default 'transformResponse' function. + if (config.responseType !== 'json') { + throw e; + } + } + } + + // Handle progress if needed + if (typeof config.onDownloadProgress === 'function') { + request.addEventListener('progress', config.onDownloadProgress); + } + + // Not all browsers support upload events + if (typeof config.onUploadProgress === 'function' && request.upload) { + request.upload.addEventListener('progress', config.onUploadProgress); + } + + if (config.cancelToken) { + // Handle cancellation + config.cancelToken.promise.then(function onCanceled(cancel) { + if (!request) { + return; + } + + request.abort(); + reject(cancel); + // Clean up request + request = null; + }); + } + + if (requestData === undefined) { + requestData = null; + } + + // Send the request + request.send(requestData); + }); +}; + +},{"../core/createError":38,"./../core/settle":41,"./../helpers/buildURL":45,"./../helpers/cookies":47,"./../helpers/isURLSameOrigin":49,"./../helpers/parseHeaders":51,"./../utils":53}],32:[function(require,module,exports){ +'use strict'; + +var utils = require('./utils'); +var bind = require('./helpers/bind'); +var Axios = require('./core/Axios'); +var defaults = require('./defaults'); + +/** + * Create an instance of Axios + * + * @param {Object} defaultConfig The default config for the instance + * @return {Axios} A new instance of Axios + */ +function createInstance(defaultConfig) { + var context = new Axios(defaultConfig); + var instance = bind(Axios.prototype.request, context); + + // Copy axios.prototype to instance + utils.extend(instance, Axios.prototype, context); + + // Copy context to instance + utils.extend(instance, context); + + return instance; +} + +// Create the default instance to be exported +var axios = createInstance(defaults); + +// Expose Axios class to allow class inheritance +axios.Axios = Axios; + +// Factory for creating new instances +axios.create = function create(instanceConfig) { + return createInstance(utils.merge(defaults, instanceConfig)); +}; + +// Expose Cancel & CancelToken +axios.Cancel = require('./cancel/Cancel'); +axios.CancelToken = require('./cancel/CancelToken'); +axios.isCancel = require('./cancel/isCancel'); + +// Expose all/spread +axios.all = function all(promises) { + return Promise.all(promises); +}; +axios.spread = require('./helpers/spread'); + +module.exports = axios; + +// Allow use of default import syntax in TypeScript +module.exports.default = axios; + +},{"./cancel/Cancel":33,"./cancel/CancelToken":34,"./cancel/isCancel":35,"./core/Axios":36,"./defaults":43,"./helpers/bind":44,"./helpers/spread":52,"./utils":53}],33:[function(require,module,exports){ +'use strict'; + +/** + * A `Cancel` is an object that is thrown when an operation is canceled. + * + * @class + * @param {string=} message The message. + */ +function Cancel(message) { + this.message = message; +} + +Cancel.prototype.toString = function toString() { + return 'Cancel' + (this.message ? ': ' + this.message : ''); +}; + +Cancel.prototype.__CANCEL__ = true; + +module.exports = Cancel; + +},{}],34:[function(require,module,exports){ +'use strict'; + +var Cancel = require('./Cancel'); + +/** + * A `CancelToken` is an object that can be used to request cancellation of an operation. + * + * @class + * @param {Function} executor The executor function. + */ +function CancelToken(executor) { + if (typeof executor !== 'function') { + throw new TypeError('executor must be a function.'); + } + + var resolvePromise; + this.promise = new Promise(function promiseExecutor(resolve) { + resolvePromise = resolve; + }); + + var token = this; + executor(function cancel(message) { + if (token.reason) { + // Cancellation has already been requested + return; + } + + token.reason = new Cancel(message); + resolvePromise(token.reason); + }); +} + +/** + * Throws a `Cancel` if cancellation has been requested. + */ +CancelToken.prototype.throwIfRequested = function throwIfRequested() { + if (this.reason) { + throw this.reason; + } +}; + +/** + * Returns an object that contains a new `CancelToken` and a function that, when called, + * cancels the `CancelToken`. + */ +CancelToken.source = function source() { + var cancel; + var token = new CancelToken(function executor(c) { + cancel = c; + }); + return { + token: token, + cancel: cancel + }; +}; + +module.exports = CancelToken; + +},{"./Cancel":33}],35:[function(require,module,exports){ +'use strict'; + +module.exports = function isCancel(value) { + return !!(value && value.__CANCEL__); +}; + +},{}],36:[function(require,module,exports){ +'use strict'; + +var defaults = require('./../defaults'); +var utils = require('./../utils'); +var InterceptorManager = require('./InterceptorManager'); +var dispatchRequest = require('./dispatchRequest'); + +/** + * Create a new instance of Axios + * + * @param {Object} instanceConfig The default config for the instance + */ +function Axios(instanceConfig) { + this.defaults = instanceConfig; + this.interceptors = { + request: new InterceptorManager(), + response: new InterceptorManager() + }; +} + +/** + * Dispatch a request + * + * @param {Object} config The config specific for this request (merged with this.defaults) + */ +Axios.prototype.request = function request(config) { + /*eslint no-param-reassign:0*/ + // Allow for axios('example/url'[, config]) a la fetch API + if (typeof config === 'string') { + config = utils.merge({ + url: arguments[0] + }, arguments[1]); + } + + config = utils.merge(defaults, {method: 'get'}, this.defaults, config); + config.method = config.method.toLowerCase(); + + // Hook up interceptors middleware + var chain = [dispatchRequest, undefined]; + var promise = Promise.resolve(config); + + this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { + chain.unshift(interceptor.fulfilled, interceptor.rejected); + }); + + this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { + chain.push(interceptor.fulfilled, interceptor.rejected); + }); + + while (chain.length) { + promise = promise.then(chain.shift(), chain.shift()); + } + + return promise; +}; + +// Provide aliases for supported request methods +utils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function(url, config) { + return this.request(utils.merge(config || {}, { + method: method, + url: url + })); + }; +}); + +utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function(url, data, config) { + return this.request(utils.merge(config || {}, { + method: method, + url: url, + data: data + })); + }; +}); + +module.exports = Axios; + +},{"./../defaults":43,"./../utils":53,"./InterceptorManager":37,"./dispatchRequest":39}],37:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); + +function InterceptorManager() { + this.handlers = []; +} + +/** + * Add a new interceptor to the stack + * + * @param {Function} fulfilled The function to handle `then` for a `Promise` + * @param {Function} rejected The function to handle `reject` for a `Promise` + * + * @return {Number} An ID used to remove interceptor later + */ +InterceptorManager.prototype.use = function use(fulfilled, rejected) { + this.handlers.push({ + fulfilled: fulfilled, + rejected: rejected + }); + return this.handlers.length - 1; +}; + +/** + * Remove an interceptor from the stack + * + * @param {Number} id The ID that was returned by `use` + */ +InterceptorManager.prototype.eject = function eject(id) { + if (this.handlers[id]) { + this.handlers[id] = null; + } +}; + +/** + * Iterate over all the registered interceptors + * + * This method is particularly useful for skipping over any + * interceptors that may have become `null` calling `eject`. + * + * @param {Function} fn The function to call for each interceptor + */ +InterceptorManager.prototype.forEach = function forEach(fn) { + utils.forEach(this.handlers, function forEachHandler(h) { + if (h !== null) { + fn(h); + } + }); +}; + +module.exports = InterceptorManager; + +},{"./../utils":53}],38:[function(require,module,exports){ +'use strict'; + +var enhanceError = require('./enhanceError'); + +/** + * Create an Error with the specified message, config, error code, request and response. + * + * @param {string} message The error message. + * @param {Object} config The config. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * @returns {Error} The created error. + */ +module.exports = function createError(message, config, code, request, response) { + var error = new Error(message); + return enhanceError(error, config, code, request, response); +}; + +},{"./enhanceError":40}],39:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); +var transformData = require('./transformData'); +var isCancel = require('../cancel/isCancel'); +var defaults = require('../defaults'); +var isAbsoluteURL = require('./../helpers/isAbsoluteURL'); +var combineURLs = require('./../helpers/combineURLs'); + +/** + * Throws a `Cancel` if cancellation has been requested. + */ +function throwIfCancellationRequested(config) { + if (config.cancelToken) { + config.cancelToken.throwIfRequested(); + } +} + +/** + * Dispatch a request to the server using the configured adapter. + * + * @param {object} config The config that is to be used for the request + * @returns {Promise} The Promise to be fulfilled + */ +module.exports = function dispatchRequest(config) { + throwIfCancellationRequested(config); + + // Support baseURL config + if (config.baseURL && !isAbsoluteURL(config.url)) { + config.url = combineURLs(config.baseURL, config.url); + } + + // Ensure headers exist + config.headers = config.headers || {}; + + // Transform request data + config.data = transformData( + config.data, + config.headers, + config.transformRequest + ); + + // Flatten headers + config.headers = utils.merge( + config.headers.common || {}, + config.headers[config.method] || {}, + config.headers || {} + ); + + utils.forEach( + ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], + function cleanHeaderConfig(method) { + delete config.headers[method]; + } + ); + + var adapter = config.adapter || defaults.adapter; + + return adapter(config).then(function onAdapterResolution(response) { + throwIfCancellationRequested(config); + + // Transform response data + response.data = transformData( + response.data, + response.headers, + config.transformResponse + ); + + return response; + }, function onAdapterRejection(reason) { + if (!isCancel(reason)) { + throwIfCancellationRequested(config); + + // Transform response data + if (reason && reason.response) { + reason.response.data = transformData( + reason.response.data, + reason.response.headers, + config.transformResponse + ); + } + } + + return Promise.reject(reason); + }); +}; + +},{"../cancel/isCancel":35,"../defaults":43,"./../helpers/combineURLs":46,"./../helpers/isAbsoluteURL":48,"./../utils":53,"./transformData":42}],40:[function(require,module,exports){ +'use strict'; + +/** + * Update an Error with the specified config, error code, and response. + * + * @param {Error} error The error to update. + * @param {Object} config The config. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * @returns {Error} The error. + */ +module.exports = function enhanceError(error, config, code, request, response) { + error.config = config; + if (code) { + error.code = code; + } + error.request = request; + error.response = response; + return error; +}; + +},{}],41:[function(require,module,exports){ +'use strict'; + +var createError = require('./createError'); + +/** + * Resolve or reject a Promise based on response status. + * + * @param {Function} resolve A function that resolves the promise. + * @param {Function} reject A function that rejects the promise. + * @param {object} response The response. + */ +module.exports = function settle(resolve, reject, response) { + var validateStatus = response.config.validateStatus; + // Note: status is not exposed by XDomainRequest + if (!response.status || !validateStatus || validateStatus(response.status)) { + resolve(response); + } else { + reject(createError( + 'Request failed with status code ' + response.status, + response.config, + null, + response.request, + response + )); + } +}; + +},{"./createError":38}],42:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); + +/** + * Transform the data for a request or a response + * + * @param {Object|String} data The data to be transformed + * @param {Array} headers The headers for the request or response + * @param {Array|Function} fns A single function or Array of functions + * @returns {*} The resulting transformed data + */ +module.exports = function transformData(data, headers, fns) { + /*eslint no-param-reassign:0*/ + utils.forEach(fns, function transform(fn) { + data = fn(data, headers); + }); + + return data; +}; + +},{"./../utils":53}],43:[function(require,module,exports){ +(function (process){ +'use strict'; + +var utils = require('./utils'); +var normalizeHeaderName = require('./helpers/normalizeHeaderName'); + +var DEFAULT_CONTENT_TYPE = { + 'Content-Type': 'application/x-www-form-urlencoded' +}; + +function setContentTypeIfUnset(headers, value) { + if (!utils.isUndefined(headers) && utils.isUndefined(headers['Content-Type'])) { + headers['Content-Type'] = value; + } +} + +function getDefaultAdapter() { + var adapter; + if (typeof XMLHttpRequest !== 'undefined') { + // For browsers use XHR adapter + adapter = require('./adapters/xhr'); + } else if (typeof process !== 'undefined') { + // For node use HTTP adapter + adapter = require('./adapters/http'); + } + return adapter; +} + +var defaults = { + adapter: getDefaultAdapter(), + + transformRequest: [function transformRequest(data, headers) { + normalizeHeaderName(headers, 'Content-Type'); + if (utils.isFormData(data) || + utils.isArrayBuffer(data) || + utils.isBuffer(data) || + utils.isStream(data) || + utils.isFile(data) || + utils.isBlob(data) + ) { + return data; + } + if (utils.isArrayBufferView(data)) { + return data.buffer; + } + if (utils.isURLSearchParams(data)) { + setContentTypeIfUnset(headers, 'application/x-www-form-urlencoded;charset=utf-8'); + return data.toString(); + } + if (utils.isObject(data)) { + setContentTypeIfUnset(headers, 'application/json;charset=utf-8'); + return JSON.stringify(data); + } + return data; + }], + + transformResponse: [function transformResponse(data) { + /*eslint no-param-reassign:0*/ + if (typeof data === 'string') { + try { + data = JSON.parse(data); + } catch (e) { /* Ignore */ } + } + return data; + }], + + /** + * A timeout in milliseconds to abort a request. If set to 0 (default) a + * timeout is not created. + */ + timeout: 0, + + xsrfCookieName: 'XSRF-TOKEN', + xsrfHeaderName: 'X-XSRF-TOKEN', + + maxContentLength: -1, + + validateStatus: function validateStatus(status) { + return status >= 200 && status < 300; + } +}; + +defaults.headers = { + common: { + 'Accept': 'application/json, text/plain, */*' + } +}; + +utils.forEach(['delete', 'get', 'head'], function forEachMethodNoData(method) { + defaults.headers[method] = {}; +}); + +utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + defaults.headers[method] = utils.merge(DEFAULT_CONTENT_TYPE); +}); + +module.exports = defaults; + +}).call(this,require('_process')) +},{"./adapters/http":31,"./adapters/xhr":31,"./helpers/normalizeHeaderName":50,"./utils":53,"_process":678}],44:[function(require,module,exports){ +'use strict'; + +module.exports = function bind(fn, thisArg) { + return function wrap() { + var args = new Array(arguments.length); + for (var i = 0; i < args.length; i++) { + args[i] = arguments[i]; + } + return fn.apply(thisArg, args); + }; +}; + +},{}],45:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); + +function encode(val) { + return encodeURIComponent(val). + replace(/%40/gi, '@'). + replace(/%3A/gi, ':'). + replace(/%24/g, '$'). + replace(/%2C/gi, ','). + replace(/%20/g, '+'). + replace(/%5B/gi, '['). + replace(/%5D/gi, ']'); +} + +/** + * Build a URL by appending params to the end + * + * @param {string} url The base of the url (e.g., http://www.google.com) + * @param {object} [params] The params to be appended + * @returns {string} The formatted url + */ +module.exports = function buildURL(url, params, paramsSerializer) { + /*eslint no-param-reassign:0*/ + if (!params) { + return url; + } + + var serializedParams; + if (paramsSerializer) { + serializedParams = paramsSerializer(params); + } else if (utils.isURLSearchParams(params)) { + serializedParams = params.toString(); + } else { + var parts = []; + + utils.forEach(params, function serialize(val, key) { + if (val === null || typeof val === 'undefined') { + return; + } + + if (utils.isArray(val)) { + key = key + '[]'; + } else { + val = [val]; + } + + utils.forEach(val, function parseValue(v) { + if (utils.isDate(v)) { + v = v.toISOString(); + } else if (utils.isObject(v)) { + v = JSON.stringify(v); + } + parts.push(encode(key) + '=' + encode(v)); + }); + }); + + serializedParams = parts.join('&'); + } + + if (serializedParams) { + url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; + } + + return url; +}; + +},{"./../utils":53}],46:[function(require,module,exports){ +'use strict'; + +/** + * Creates a new URL by combining the specified URLs + * + * @param {string} baseURL The base URL + * @param {string} relativeURL The relative URL + * @returns {string} The combined URL + */ +module.exports = function combineURLs(baseURL, relativeURL) { + return relativeURL + ? baseURL.replace(/\/+$/, '') + '/' + relativeURL.replace(/^\/+/, '') + : baseURL; +}; + +},{}],47:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); + +module.exports = ( + utils.isStandardBrowserEnv() ? + + // Standard browser envs support document.cookie + (function standardBrowserEnv() { + return { + write: function write(name, value, expires, path, domain, secure) { + var cookie = []; + cookie.push(name + '=' + encodeURIComponent(value)); + + if (utils.isNumber(expires)) { + cookie.push('expires=' + new Date(expires).toGMTString()); + } + + if (utils.isString(path)) { + cookie.push('path=' + path); + } + + if (utils.isString(domain)) { + cookie.push('domain=' + domain); + } + + if (secure === true) { + cookie.push('secure'); + } + + document.cookie = cookie.join('; '); + }, + + read: function read(name) { + var match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); + return (match ? decodeURIComponent(match[3]) : null); + }, + + remove: function remove(name) { + this.write(name, '', Date.now() - 86400000); + } + }; + })() : + + // Non standard browser env (web workers, react-native) lack needed support. + (function nonStandardBrowserEnv() { + return { + write: function write() {}, + read: function read() { return null; }, + remove: function remove() {} + }; + })() +); + +},{"./../utils":53}],48:[function(require,module,exports){ +'use strict'; + +/** + * Determines whether the specified URL is absolute + * + * @param {string} url The URL to test + * @returns {boolean} True if the specified URL is absolute, otherwise false + */ +module.exports = function isAbsoluteURL(url) { + // A URL is considered absolute if it begins with "://" or "//" (protocol-relative URL). + // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed + // by any combination of letters, digits, plus, period, or hyphen. + return /^([a-z][a-z\d\+\-\.]*:)?\/\//i.test(url); +}; + +},{}],49:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); + +module.exports = ( + utils.isStandardBrowserEnv() ? + + // Standard browser envs have full support of the APIs needed to test + // whether the request URL is of the same origin as current location. + (function standardBrowserEnv() { + var msie = /(msie|trident)/i.test(navigator.userAgent); + var urlParsingNode = document.createElement('a'); + var originURL; + + /** + * Parse a URL to discover it's components + * + * @param {String} url The URL to be parsed + * @returns {Object} + */ + function resolveURL(url) { + var href = url; + + if (msie) { + // IE needs attribute set twice to normalize properties + urlParsingNode.setAttribute('href', href); + href = urlParsingNode.href; + } + + urlParsingNode.setAttribute('href', href); + + // urlParsingNode provides the UrlUtils interface - http://url.spec.whatwg.org/#urlutils + return { + href: urlParsingNode.href, + protocol: urlParsingNode.protocol ? urlParsingNode.protocol.replace(/:$/, '') : '', + host: urlParsingNode.host, + search: urlParsingNode.search ? urlParsingNode.search.replace(/^\?/, '') : '', + hash: urlParsingNode.hash ? urlParsingNode.hash.replace(/^#/, '') : '', + hostname: urlParsingNode.hostname, + port: urlParsingNode.port, + pathname: (urlParsingNode.pathname.charAt(0) === '/') ? + urlParsingNode.pathname : + '/' + urlParsingNode.pathname + }; + } + + originURL = resolveURL(window.location.href); + + /** + * Determine if a URL shares the same origin as the current location + * + * @param {String} requestURL The URL to test + * @returns {boolean} True if URL shares the same origin, otherwise false + */ + return function isURLSameOrigin(requestURL) { + var parsed = (utils.isString(requestURL)) ? resolveURL(requestURL) : requestURL; + return (parsed.protocol === originURL.protocol && + parsed.host === originURL.host); + }; + })() : + + // Non standard browser envs (web workers, react-native) lack needed support. + (function nonStandardBrowserEnv() { + return function isURLSameOrigin() { + return true; + }; + })() +); + +},{"./../utils":53}],50:[function(require,module,exports){ +'use strict'; + +var utils = require('../utils'); + +module.exports = function normalizeHeaderName(headers, normalizedName) { + utils.forEach(headers, function processHeader(value, name) { + if (name !== normalizedName && name.toUpperCase() === normalizedName.toUpperCase()) { + headers[normalizedName] = value; + delete headers[name]; + } + }); +}; + +},{"../utils":53}],51:[function(require,module,exports){ +'use strict'; + +var utils = require('./../utils'); + +// Headers whose duplicates are ignored by node +// c.f. https://nodejs.org/api/http.html#http_message_headers +var ignoreDuplicateOf = [ + 'age', 'authorization', 'content-length', 'content-type', 'etag', + 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', + 'last-modified', 'location', 'max-forwards', 'proxy-authorization', + 'referer', 'retry-after', 'user-agent' +]; + +/** + * Parse headers into an object + * + * ``` + * Date: Wed, 27 Aug 2014 08:58:49 GMT + * Content-Type: application/json + * Connection: keep-alive + * Transfer-Encoding: chunked + * ``` + * + * @param {String} headers Headers needing to be parsed + * @returns {Object} Headers parsed into an object + */ +module.exports = function parseHeaders(headers) { + var parsed = {}; + var key; + var val; + var i; + + if (!headers) { return parsed; } + + utils.forEach(headers.split('\n'), function parser(line) { + i = line.indexOf(':'); + key = utils.trim(line.substr(0, i)).toLowerCase(); + val = utils.trim(line.substr(i + 1)); + + if (key) { + if (parsed[key] && ignoreDuplicateOf.indexOf(key) >= 0) { + return; + } + if (key === 'set-cookie') { + parsed[key] = (parsed[key] ? parsed[key] : []).concat([val]); + } else { + parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; + } + } + }); + + return parsed; +}; + +},{"./../utils":53}],52:[function(require,module,exports){ +'use strict'; + +/** + * Syntactic sugar for invoking a function and expanding an array for arguments. + * + * Common use case would be to use `Function.prototype.apply`. + * + * ```js + * function f(x, y, z) {} + * var args = [1, 2, 3]; + * f.apply(null, args); + * ``` + * + * With `spread` this example can be re-written. + * + * ```js + * spread(function(x, y, z) {})([1, 2, 3]); + * ``` + * + * @param {Function} callback + * @returns {Function} + */ +module.exports = function spread(callback) { + return function wrap(arr) { + return callback.apply(null, arr); + }; +}; + +},{}],53:[function(require,module,exports){ +'use strict'; + +var bind = require('./helpers/bind'); +var isBuffer = require('is-buffer'); + +/*global toString:true*/ + +// utils is a library of generic helper functions non-specific to axios + +var toString = Object.prototype.toString; + +/** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an Array, otherwise false + */ +function isArray(val) { + return toString.call(val) === '[object Array]'; +} + +/** + * Determine if a value is an ArrayBuffer + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ +function isArrayBuffer(val) { + return toString.call(val) === '[object ArrayBuffer]'; +} + +/** + * Determine if a value is a FormData + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an FormData, otherwise false + */ +function isFormData(val) { + return (typeof FormData !== 'undefined') && (val instanceof FormData); +} + +/** + * Determine if a value is a view on an ArrayBuffer + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ +function isArrayBufferView(val) { + var result; + if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { + result = ArrayBuffer.isView(val); + } else { + result = (val) && (val.buffer) && (val.buffer instanceof ArrayBuffer); + } + return result; +} + +/** + * Determine if a value is a String + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a String, otherwise false + */ +function isString(val) { + return typeof val === 'string'; +} + +/** + * Determine if a value is a Number + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Number, otherwise false + */ +function isNumber(val) { + return typeof val === 'number'; +} + +/** + * Determine if a value is undefined + * + * @param {Object} val The value to test + * @returns {boolean} True if the value is undefined, otherwise false + */ +function isUndefined(val) { + return typeof val === 'undefined'; +} + +/** + * Determine if a value is an Object + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an Object, otherwise false + */ +function isObject(val) { + return val !== null && typeof val === 'object'; +} + +/** + * Determine if a value is a Date + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Date, otherwise false + */ +function isDate(val) { + return toString.call(val) === '[object Date]'; +} + +/** + * Determine if a value is a File + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a File, otherwise false + */ +function isFile(val) { + return toString.call(val) === '[object File]'; +} + +/** + * Determine if a value is a Blob + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Blob, otherwise false + */ +function isBlob(val) { + return toString.call(val) === '[object Blob]'; +} + +/** + * Determine if a value is a Function + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ +function isFunction(val) { + return toString.call(val) === '[object Function]'; +} + +/** + * Determine if a value is a Stream + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Stream, otherwise false + */ +function isStream(val) { + return isObject(val) && isFunction(val.pipe); +} + +/** + * Determine if a value is a URLSearchParams object + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ +function isURLSearchParams(val) { + return typeof URLSearchParams !== 'undefined' && val instanceof URLSearchParams; +} + +/** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * @returns {String} The String freed of excess whitespace + */ +function trim(str) { + return str.replace(/^\s*/, '').replace(/\s*$/, ''); +} + +/** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + */ +function isStandardBrowserEnv() { + if (typeof navigator !== 'undefined' && navigator.product === 'ReactNative') { + return false; + } + return ( + typeof window !== 'undefined' && + typeof document !== 'undefined' + ); +} + +/** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + */ +function forEach(obj, fn) { + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + + // Force an array if not already something iterable + if (typeof obj !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + + if (isArray(obj)) { + // Iterate over array values + for (var i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + for (var key in obj) { + if (Object.prototype.hasOwnProperty.call(obj, key)) { + fn.call(null, obj[key], key, obj); + } + } + } +} + +/** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * @returns {Object} Result of all merge properties + */ +function merge(/* obj1, obj2, obj3, ... */) { + var result = {}; + function assignValue(val, key) { + if (typeof result[key] === 'object' && typeof val === 'object') { + result[key] = merge(result[key], val); + } else { + result[key] = val; + } + } + + for (var i = 0, l = arguments.length; i < l; i++) { + forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * @return {Object} The resulting value of object a + */ +function extend(a, b, thisArg) { + forEach(b, function assignValue(val, key) { + if (thisArg && typeof val === 'function') { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }); + return a; +} + +module.exports = { + isArray: isArray, + isArrayBuffer: isArrayBuffer, + isBuffer: isBuffer, + isFormData: isFormData, + isArrayBufferView: isArrayBufferView, + isString: isString, + isNumber: isNumber, + isObject: isObject, + isUndefined: isUndefined, + isDate: isDate, + isFile: isFile, + isBlob: isBlob, + isFunction: isFunction, + isStream: isStream, + isURLSearchParams: isURLSearchParams, + isStandardBrowserEnv: isStandardBrowserEnv, + forEach: forEach, + merge: merge, + extend: extend, + trim: trim +}; + +},{"./helpers/bind":44,"is-buffer":398}],54:[function(require,module,exports){ +'use strict' +// base-x encoding / decoding +// Copyright (c) 2018 base-x contributors +// Copyright (c) 2014-2018 The Bitcoin Core developers (base58.cpp) +// Distributed under the MIT software license, see the accompanying +// file LICENSE or http://www.opensource.org/licenses/mit-license.php. +// @ts-ignore +var _Buffer = require('safe-buffer').Buffer +function base (ALPHABET) { + if (ALPHABET.length >= 255) { throw new TypeError('Alphabet too long') } + var BASE_MAP = new Uint8Array(256) + BASE_MAP.fill(255) + for (var i = 0; i < ALPHABET.length; i++) { + var x = ALPHABET.charAt(i) + var xc = x.charCodeAt(0) + if (BASE_MAP[xc] !== 255) { throw new TypeError(x + ' is ambiguous') } + BASE_MAP[xc] = i + } + var BASE = ALPHABET.length + var LEADER = ALPHABET.charAt(0) + var FACTOR = Math.log(BASE) / Math.log(256) // log(BASE) / log(256), rounded up + var iFACTOR = Math.log(256) / Math.log(BASE) // log(256) / log(BASE), rounded up + function encode (source) { + if (!_Buffer.isBuffer(source)) { throw new TypeError('Expected Buffer') } + if (source.length === 0) { return '' } + // Skip & count leading zeroes. + var zeroes = 0 + var length = 0 + var pbegin = 0 + var pend = source.length + while (pbegin !== pend && source[pbegin] === 0) { + pbegin++ + zeroes++ + } + // Allocate enough space in big-endian base58 representation. + var size = ((pend - pbegin) * iFACTOR + 1) >>> 0 + var b58 = new Uint8Array(size) + // Process the bytes. + while (pbegin !== pend) { + var carry = source[pbegin] + // Apply "b58 = b58 * 256 + ch". + var i = 0 + for (var it1 = size - 1; (carry !== 0 || i < length) && (it1 !== -1); it1--, i++) { + carry += (256 * b58[it1]) >>> 0 + b58[it1] = (carry % BASE) >>> 0 + carry = (carry / BASE) >>> 0 + } + if (carry !== 0) { throw new Error('Non-zero carry') } + length = i + pbegin++ + } + // Skip leading zeroes in base58 result. + var it2 = size - length + while (it2 !== size && b58[it2] === 0) { + it2++ + } + // Translate the result into a string. + var str = LEADER.repeat(zeroes) + for (; it2 < size; ++it2) { str += ALPHABET.charAt(b58[it2]) } + return str + } + function decodeUnsafe (source) { + if (typeof source !== 'string') { throw new TypeError('Expected String') } + if (source.length === 0) { return _Buffer.alloc(0) } + var psz = 0 + // Skip leading spaces. + if (source[psz] === ' ') { return } + // Skip and count leading '1's. + var zeroes = 0 + var length = 0 + while (source[psz] === LEADER) { + zeroes++ + psz++ + } + // Allocate enough space in big-endian base256 representation. + var size = (((source.length - psz) * FACTOR) + 1) >>> 0 // log(58) / log(256), rounded up. + var b256 = new Uint8Array(size) + // Process the characters. + while (source[psz]) { + // Decode character + var carry = BASE_MAP[source.charCodeAt(psz)] + // Invalid character + if (carry === 255) { return } + var i = 0 + for (var it3 = size - 1; (carry !== 0 || i < length) && (it3 !== -1); it3--, i++) { + carry += (BASE * b256[it3]) >>> 0 + b256[it3] = (carry % 256) >>> 0 + carry = (carry / 256) >>> 0 + } + if (carry !== 0) { throw new Error('Non-zero carry') } + length = i + psz++ + } + // Skip trailing spaces. + if (source[psz] === ' ') { return } + // Skip leading zeroes in b256. + var it4 = size - length + while (it4 !== size && b256[it4] === 0) { + it4++ + } + var vch = _Buffer.allocUnsafe(zeroes + (size - it4)) + vch.fill(0x00, 0, zeroes) + var j = zeroes + while (it4 !== size) { + vch[j++] = b256[it4++] + } + return vch + } + function decode (string) { + var buffer = decodeUnsafe(string) + if (buffer) { return buffer } + throw new Error('Non-base' + BASE + ' character') + } + return { + encode: encode, + decodeUnsafe: decodeUnsafe, + decode: decode + } +} +module.exports = base + +},{"safe-buffer":742}],55:[function(require,module,exports){ +"use strict"; + +/** + * Generate a character map. + * @param {string} alphabet e.g. "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567" + * @param {object} mappings map overrides from key to value + * @method + */ + +var charmap = function (alphabet, mappings) { + mappings || (mappings = {}); + alphabet.split("").forEach(function (c, i) { + if (!(c in mappings)) mappings[c] = i; + }); + return mappings; +} + +/** + * The RFC 4648 base 32 alphabet and character map. + * @see {@link https://tools.ietf.org/html/rfc4648} + */ + +var rfc4648 = { + alphabet: "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567", + charmap: { + 0: 14, + 1: 8 + } +}; + +rfc4648.charmap = charmap(rfc4648.alphabet, rfc4648.charmap); + +/** + * The Crockford base 32 alphabet and character map. + * @see {@link http://www.crockford.com/wrmg/base32.html} + */ + +var crockford = { + alphabet: "0123456789ABCDEFGHJKMNPQRSTVWXYZ", + charmap: { + O: 0, + I: 1, + L: 1 + } +}; + +crockford.charmap = charmap(crockford.alphabet, crockford.charmap); + +/** + * base32hex + * @see {@link https://en.wikipedia.org/wiki/Base32#base32hex} + */ + +var base32hex = { + alphabet: "0123456789ABCDEFGHIJKLMNOPQRSTUV", + charmap: {} +}; + +base32hex.charmap = charmap(base32hex.alphabet, base32hex.charmap); + +/** + * Create a new `Decoder` with the given options. + * + * @param {object} [options] + * @param {string} [type] Supported Base-32 variants are "rfc4648" and + * "crockford". + * @param {object} [charmap] Override the character map used in decoding. + * @constructor + */ + +function Decoder (options) { + this.buf = []; + this.shift = 8; + this.carry = 0; + + if (options) { + + switch (options.type) { + case "rfc4648": + this.charmap = exports.rfc4648.charmap; + break; + case "crockford": + this.charmap = exports.crockford.charmap; + break; + case "base32hex": + this.charmap = exports.base32hex.charmap; + break; + default: + throw new Error("invalid type"); + } + + if (options.charmap) this.charmap = options.charmap; + } +} + +/** + * The default character map coresponds to RFC4648. + */ + +Decoder.prototype.charmap = rfc4648.charmap; + +/** + * Decode a string, continuing from the previous state. + * + * @param {string} str + * @return {Decoder} this + */ + +Decoder.prototype.write = function (str) { + var charmap = this.charmap; + var buf = this.buf; + var shift = this.shift; + var carry = this.carry; + + // decode string + str.toUpperCase().split("").forEach(function (char) { + + // ignore padding + if (char == "=") return; + + // lookup symbol + var symbol = charmap[char] & 0xff; + + // 1: 00000 000 + // 2: 00 00000 0 + // 3: 0000 0000 + // 4: 0 00000 00 + // 5: 000 00000 + // 6: 00000 000 + // 7: 00 00000 0 + + shift -= 5; + if (shift > 0) { + carry |= symbol << shift; + } else if (shift < 0) { + buf.push(carry | (symbol >> -shift)); + shift += 8; + carry = (symbol << shift) & 0xff; + } else { + buf.push(carry | symbol); + shift = 8; + carry = 0; + } + }); + + // save state + this.shift = shift; + this.carry = carry; + + // for chaining + return this; +}; + +/** + * Finish decoding. + * + * @param {string} [str] The final string to decode. + * @return {Array} Decoded byte array. + */ + +Decoder.prototype.finalize = function (str) { + if (str) { + this.write(str); + } + if (this.shift !== 8 && this.carry !== 0) { + this.buf.push(this.carry); + this.shift = 8; + this.carry = 0; + } + return this.buf; +}; + +/** + * Create a new `Encoder` with the given options. + * + * @param {object} [options] + * @param {string} [type] Supported Base-32 variants are "rfc4648" and + * "crockford". + * @param {object} [alphabet] Override the alphabet used in encoding. + * @constructor + */ + +function Encoder (options) { + this.buf = ""; + this.shift = 3; + this.carry = 0; + + if (options) { + + switch (options.type) { + case "rfc4648": + this.alphabet = exports.rfc4648.alphabet; + break; + case "crockford": + this.alphabet = exports.crockford.alphabet; + break; + case "base32hex": + this.alphabet = exports.base32hex.alphabet; + break; + default: + throw new Error("invalid type"); + } + + if (options.alphabet) this.alphabet = options.alphabet; + else if (options.lc) this.alphabet = this.alphabet.toLowerCase(); + } +} + +/** + * The default alphabet coresponds to RFC4648. + */ + +Encoder.prototype.alphabet = rfc4648.alphabet; + +/** + * Encode a byte array, continuing from the previous state. + * + * @param {byte[]} buf The byte array to encode. + * @return {Encoder} this + */ + +Encoder.prototype.write = function (buf) { + var shift = this.shift; + var carry = this.carry; + var symbol; + var byte; + var i; + + // encode each byte in buf + for (i = 0; i < buf.length; i++) { + byte = buf[i]; + + // 1: 00000 000 + // 2: 00 00000 0 + // 3: 0000 0000 + // 4: 0 00000 00 + // 5: 000 00000 + // 6: 00000 000 + // 7: 00 00000 0 + + symbol = carry | (byte >> shift); + this.buf += this.alphabet[symbol & 0x1f]; + + if (shift > 5) { + shift -= 5; + symbol = byte >> shift; + this.buf += this.alphabet[symbol & 0x1f]; + } + + shift = 5 - shift; + carry = byte << shift; + shift = 8 - shift; + } + + // save state + this.shift = shift; + this.carry = carry; + + // for chaining + return this; +}; + +/** + * Finish encoding. + * + * @param {byte[]} [buf] The final byte array to encode. + * @return {string} The encoded byte array. + */ + +Encoder.prototype.finalize = function (buf) { + if (buf) { + this.write(buf); + } + if (this.shift !== 3) { + this.buf += this.alphabet[this.carry & 0x1f]; + this.shift = 3; + this.carry = 0; + } + return this.buf; +}; + +/** + * Convenience encoder. + * + * @param {byte[]} buf The byte array to encode. + * @param {object} [options] Options to pass to the encoder. + * @return {string} The encoded string. + */ + +exports.encode = function (buf, options) { + return new Encoder(options).finalize(buf); +}; + +/** + * Convenience decoder. + * + * @param {string} str The string to decode. + * @param {object} [options] Options to pass to the decoder. + * @return {byte[]} The decoded byte array. + */ + +exports.decode = function (str, options) { + return new Decoder(options).finalize(str); +}; + +// Exports. +exports.Decoder = Decoder; +exports.Encoder = Encoder; +exports.charmap = charmap; +exports.crockford = crockford; +exports.rfc4648 = rfc4648; +exports.base32hex = base32hex; + +},{}],56:[function(require,module,exports){ +'use strict' + +exports.byteLength = byteLength +exports.toByteArray = toByteArray +exports.fromByteArray = fromByteArray + +var lookup = [] +var revLookup = [] +var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array + +var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' +for (var i = 0, len = code.length; i < len; ++i) { + lookup[i] = code[i] + revLookup[code.charCodeAt(i)] = i +} + +// Support decoding URL-safe base64 strings, as Node.js does. +// See: https://en.wikipedia.org/wiki/Base64#URL_applications +revLookup['-'.charCodeAt(0)] = 62 +revLookup['_'.charCodeAt(0)] = 63 + +function getLens (b64) { + var len = b64.length + + if (len % 4 > 0) { + throw new Error('Invalid string. Length must be a multiple of 4') + } + + // Trim off extra bytes after placeholder bytes are found + // See: https://github.com/beatgammit/base64-js/issues/42 + var validLen = b64.indexOf('=') + if (validLen === -1) validLen = len + + var placeHoldersLen = validLen === len + ? 0 + : 4 - (validLen % 4) + + return [validLen, placeHoldersLen] +} + +// base64 is 4/3 + up to two characters of the original data +function byteLength (b64) { + var lens = getLens(b64) + var validLen = lens[0] + var placeHoldersLen = lens[1] + return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen +} + +function _byteLength (b64, validLen, placeHoldersLen) { + return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen +} + +function toByteArray (b64) { + var tmp + var lens = getLens(b64) + var validLen = lens[0] + var placeHoldersLen = lens[1] + + var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen)) + + var curByte = 0 + + // if there are placeholders, only get up to the last complete 4 chars + var len = placeHoldersLen > 0 + ? validLen - 4 + : validLen + + var i + for (i = 0; i < len; i += 4) { + tmp = + (revLookup[b64.charCodeAt(i)] << 18) | + (revLookup[b64.charCodeAt(i + 1)] << 12) | + (revLookup[b64.charCodeAt(i + 2)] << 6) | + revLookup[b64.charCodeAt(i + 3)] + arr[curByte++] = (tmp >> 16) & 0xFF + arr[curByte++] = (tmp >> 8) & 0xFF + arr[curByte++] = tmp & 0xFF + } + + if (placeHoldersLen === 2) { + tmp = + (revLookup[b64.charCodeAt(i)] << 2) | + (revLookup[b64.charCodeAt(i + 1)] >> 4) + arr[curByte++] = tmp & 0xFF + } + + if (placeHoldersLen === 1) { + tmp = + (revLookup[b64.charCodeAt(i)] << 10) | + (revLookup[b64.charCodeAt(i + 1)] << 4) | + (revLookup[b64.charCodeAt(i + 2)] >> 2) + arr[curByte++] = (tmp >> 8) & 0xFF + arr[curByte++] = tmp & 0xFF + } + + return arr +} + +function tripletToBase64 (num) { + return lookup[num >> 18 & 0x3F] + + lookup[num >> 12 & 0x3F] + + lookup[num >> 6 & 0x3F] + + lookup[num & 0x3F] +} + +function encodeChunk (uint8, start, end) { + var tmp + var output = [] + for (var i = start; i < end; i += 3) { + tmp = + ((uint8[i] << 16) & 0xFF0000) + + ((uint8[i + 1] << 8) & 0xFF00) + + (uint8[i + 2] & 0xFF) + output.push(tripletToBase64(tmp)) + } + return output.join('') +} + +function fromByteArray (uint8) { + var tmp + var len = uint8.length + var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes + var parts = [] + var maxChunkLength = 16383 // must be multiple of 3 + + // go through the array every three bytes, we'll deal with trailing stuff later + for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { + parts.push(encodeChunk( + uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength) + )) + } + + // pad the end with zeros, but make sure to not forget the extra bytes + if (extraBytes === 1) { + tmp = uint8[len - 1] + parts.push( + lookup[tmp >> 2] + + lookup[(tmp << 4) & 0x3F] + + '==' + ) + } else if (extraBytes === 2) { + tmp = (uint8[len - 2] << 8) + uint8[len - 1] + parts.push( + lookup[tmp >> 10] + + lookup[(tmp >> 4) & 0x3F] + + lookup[(tmp << 2) & 0x3F] + + '=' + ) + } + + return parts.join('') +} + +},{}],57:[function(require,module,exports){ +(function (Buffer){ +/*** + * @license + * https://github.com/bitcoincashjs/bchaddr + * Copyright (c) 2018 Emilio Almansi + * Distributed under the MIT software license, see the accompanying + * file LICENSE or http://www.opensource.org/licenses/mit-license.php. + */ + +var bs58check = require('bs58check') +var cashaddr = require('cashaddrjs-slp') + +/** + * General purpose Bitcoin Cash address detection and translation.
+ * Supports all major Bitcoin Cash address formats.
+ * Currently: + *
    + *
  • Legacy format
    • + *
  • Bitpay format
    • + *
  • Cashaddr format
    • + *
+ * @module bchaddr + */ + +/** + * @static + * Supported Bitcoin Cash address formats. + */ +var Format = {} +Format.Legacy = 'legacy' +Format.Bitpay = 'bitpay' +Format.Cashaddr = 'cashaddr' +Format.Slpaddr = 'slpaddr' + +/** + * @static + * Supported networks. + */ +var Network = {} +Network.Mainnet = 'mainnet' +Network.Testnet = 'testnet' + +/** + * @static + * Supported address types. + */ +var Type = {} +Type.P2PKH = 'p2pkh' +Type.P2SH = 'p2sh' + +/** + * Detects what is the given address' format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function detectAddressFormat (address) { + return decodeAddress(address).format +} + +/** + * Detects what is the given address' network. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function detectAddressNetwork (address) { + return decodeAddress(address).network +} + +/** + * Detects what is the given address' type. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function detectAddressType (address) { + return decodeAddress(address).type +} + +/** + * Translates the given address into legacy format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toLegacyAddress (address) { + var decoded = decodeAddress(address) + if (decoded.format === Format.Legacy) { + return address + } + return encodeAsLegacy(decoded) +} + +/** + * Translates the given address into bitpay format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toBitpayAddress (address) { + var decoded = decodeAddress(address) + if (decoded.format === Format.Bitpay) { + return address + } + return encodeAsBitpay(decoded) +} + +/** + * Translates the given address into cashaddr format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toCashAddress (address) { + var decoded = decodeAddress(address) + return encodeAsCashaddr(decoded) +} + +/** + * Translates the given address into cashaddr format. + * @static + * @param {string} address - A valid address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toSlpAddress (address) { + var decoded = decodeAddress(address) + return encodeAsSlpaddr(decoded) +} + +/** + * Translates the given address into regtest format. + * @static + * @param {string} address - A valid address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toRegtestAddress (address) { + var decoded = decodeAddress(address) + return encodeAsRegtestaddr(decoded) +} + +/** + * Translates the given address into regtest format. + * @static + * @param {string} address - A valid address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toSlpRegtestAddress (address) { + var decoded = decodeAddress(address) + return encodeAsSlpRegtestaddr(decoded) +} + +/** + * Version byte table for base58 formats. + * @private + */ +var VERSION_BYTE = {} +VERSION_BYTE[Format.Legacy] = {} +VERSION_BYTE[Format.Legacy][Network.Mainnet] = {} +VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH] = 0 +VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH] = 5 +VERSION_BYTE[Format.Legacy][Network.Testnet] = {} +VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH] = 111 +VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH] = 196 +VERSION_BYTE[Format.Bitpay] = {} +VERSION_BYTE[Format.Bitpay][Network.Mainnet] = {} +VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH] = 28 +VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH] = 40 +VERSION_BYTE[Format.Bitpay][Network.Testnet] = {} +VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2PKH] = 111 +VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2SH] = 196 + +/** + * Decodes the given address into its constituting hash, format, network and type. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeAddress (address) { + try { + return decodeBase58Address(address) + } catch (error) { + } + try { + return decodeCashAddress(address) + } catch (error) { + } + try { + return decodeSlpAddress(address) + } catch (error) { + } + throw new InvalidAddressError() +} + +/** + * Length of a valid base58check encoding payload: 1 byte for + * the version byte plus 20 bytes for a RIPEMD-160 hash. + * @private + */ +var BASE_58_CHECK_PAYLOAD_LENGTH = 21 + +/** + * Attempts to decode the given address assuming it is a base58 address. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeBase58Address (address) { + try { + var payload = bs58check.decode(address) + if (payload.length !== BASE_58_CHECK_PAYLOAD_LENGTH) { + throw new InvalidAddressError() + } + var versionByte = payload[0] + var hash = Array.prototype.slice.call(payload, 1) + switch (versionByte) { + case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Mainnet, + type: Type.P2PKH + } + case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Mainnet, + type: Type.P2SH + } + case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Testnet, + type: Type.P2PKH + } + case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Testnet, + type: Type.P2SH + } + case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH]: + return { + hash: hash, + format: Format.Bitpay, + network: Network.Mainnet, + type: Type.P2PKH + } + case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH]: + return { + hash: hash, + format: Format.Bitpay, + network: Network.Mainnet, + type: Type.P2SH + } + } + } catch (error) { + } + throw new InvalidAddressError() +} + +/** + * Attempts to decode the given address assuming it is a cashaddr address. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeCashAddress (address) { + if (address.indexOf(':') !== -1) { + try { + return decodeCashAddressWithPrefix(address) + } catch (error) { + } + } else { + var prefixes = ['bitcoincash', 'bchtest', 'regtest', 'bchreg'] + for (var i = 0; i < prefixes.length; ++i) { + try { + var prefix = prefixes[i] + return decodeCashAddressWithPrefix(prefix + ':' + address) + } catch (error) { + } + } + } + throw new InvalidAddressError() +} + +/** + * Attempts to decode the given address assuming it is a cashaddr address with explicit prefix. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeCashAddressWithPrefix (address) { + try { + var decoded = cashaddr.decode(address) + var hash = Array.prototype.slice.call(decoded.hash, 0) + var type = decoded.type === 'P2PKH' ? Type.P2PKH : Type.P2SH + switch (decoded.prefix) { + case 'bitcoincash': + return { + hash: hash, + format: Format.Cashaddr, + network: Network.Mainnet, + type: type + } + case 'bchtest': + case 'regtest': + case 'bchreg': + return { + hash: hash, + format: Format.Cashaddr, + network: Network.Testnet, + type: type + } + } + } catch (error) { + } + throw new InvalidAddressError() +} + +/** + * Attempts to decode the given address assuming it is a slpaddr address. + * @private + * @param {string} address - A valid SLP address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeSlpAddress (address) { + if (address.indexOf(':') !== -1) { + try { + return decodeSlpAddressWithPrefix(address) + } catch (error) { + } + } else { + var prefixes = ['simpleledger', 'slptest', 'slpreg'] + for (var i = 0; i < prefixes.length; ++i) { + try { + var prefix = prefixes[i] + return decodeSlpAddressWithPrefix(prefix + ':' + address) + } catch (error) { + } + } + } + throw new InvalidAddressError() +} + +/** + * Attempts to decode the given address assuming it is a slpaddr address with explicit prefix. + * @private + * @param {string} address - A valid SLP address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeSlpAddressWithPrefix (address) { + try { + var decoded = cashaddr.decode(address) + var hash = Array.prototype.slice.call(decoded.hash, 0) + var type = decoded.type === 'P2PKH' ? Type.P2PKH : Type.P2SH + switch (decoded.prefix) { + case 'simpleledger': + return { + hash: hash, + format: Format.Slpaddr, + network: Network.Mainnet, + type: type + } + case 'slptest': + case 'slpreg': + return { + hash: hash, + format: Format.Slpaddr, + network: Network.Testnet, + type: type + } + } + } catch (error) { + } + throw new InvalidAddressError() +} + +/** + * Encodes the given decoded address into legacy format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsLegacy (decoded) { + var versionByte = VERSION_BYTE[Format.Legacy][decoded.network][decoded.type] + var buffer = Buffer.alloc(1 + decoded.hash.length) + buffer[0] = versionByte + buffer.set(decoded.hash, 1) + return bs58check.encode(buffer) +} + +/** + * Encodes the given decoded address into bitpay format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsBitpay (decoded) { + var versionByte = VERSION_BYTE[Format.Bitpay][decoded.network][decoded.type] + var buffer = Buffer.alloc(1 + decoded.hash.length) + buffer[0] = versionByte + buffer.set(decoded.hash, 1) + return bs58check.encode(buffer) +} + +/** + * Encodes the given decoded address into cashaddr format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsCashaddr (decoded) { + var prefix = decoded.network === Network.Mainnet ? 'bitcoincash' : 'bchtest' + var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH' + var hash = Uint8Array.from(decoded.hash) + return cashaddr.encode(prefix, type, hash) +} + +/** + * Encodes the given decoded address into slpaddr format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsSlpaddr (decoded) { + var prefix = decoded.network === Network.Mainnet ? 'simpleledger' : 'slptest' + var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH' + var hash = Uint8Array.from(decoded.hash) + return cashaddr.encode(prefix, type, hash) +} + +/** + * Encodes the given decoded address into regtest format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsRegtestaddr (decoded) { + var prefix = 'bchreg' + var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH' + var hash = Uint8Array.from(decoded.hash) + return cashaddr.encode(prefix, type, hash) +} + +/** + * Encodes the given decoded address into regtest format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsSlpRegtestaddr (decoded) { + var prefix = 'slpreg' + var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH' + var hash = Uint8Array.from(decoded.hash) + return cashaddr.encode(prefix, type, hash) +} + +/** + * Returns a boolean indicating whether the address is in legacy format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isLegacyAddress (address) { + return detectAddressFormat(address) === Format.Legacy +} + +/** + * Returns a boolean indicating whether the address is in bitpay format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isBitpayAddress (address) { + return detectAddressFormat(address) === Format.Bitpay +} + +/** + * Returns a boolean indicating whether the address is in cashaddr format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isCashAddress (address) { + return detectAddressFormat(address) === Format.Cashaddr +} + +/** + * Returns a boolean indicating whether the address is in cashaddr format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isSlpAddress (address) { + return detectAddressFormat(address) === Format.Slpaddr +} + +/** + * Returns a boolean indicating whether the address is a mainnet address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isMainnetAddress (address) { + return detectAddressNetwork(address) === Network.Mainnet +} + +/** + * Returns a boolean indicating whether the address is a testnet address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isTestnetAddress (address) { + return detectAddressNetwork(address) === Network.Testnet +} + +/** + * Returns a boolean indicating whether the address is a p2pkh address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isP2PKHAddress (address) { + return detectAddressType(address) === Type.P2PKH +} + +/** + * Returns a boolean indicating whether the address is a p2sh address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isP2SHAddress (address) { + return detectAddressType(address) === Type.P2SH +} + +/** + * Error thrown when the address given as input is not a valid Bitcoin Cash address. + * @constructor + * InvalidAddressError + */ +function InvalidAddressError () { + var error = new Error() + this.name = error.name = 'InvalidAddressError' + this.message = error.message = 'Received an invalid Bitcoin Cash address as input.' + this.stack = error.stack +} + +InvalidAddressError.prototype = Object.create(Error.prototype) + +module.exports = { + Format: Format, + Network: Network, + Type: Type, + detectAddressFormat: detectAddressFormat, + detectAddressNetwork: detectAddressNetwork, + detectAddressType: detectAddressType, + decodeAddress: decodeAddress, + toLegacyAddress: toLegacyAddress, + toBitpayAddress: toBitpayAddress, + encodeAsCashaddr: encodeAsCashaddr, + toCashAddress: toCashAddress, + encodeAsSlpaddr: encodeAsSlpaddr, + toSlpAddress: toSlpAddress, + encodeAsRegtestaddr: encodeAsRegtestaddr, + toRegtestAddress: toRegtestAddress, + encodeAsSlpRegtestaddr: encodeAsSlpRegtestaddr, + toSlpRegtestAddress: toSlpRegtestAddress, + encodeAsLegacy: encodeAsLegacy, + isLegacyAddress: isLegacyAddress, + encodeAsBitpay: encodeAsBitpay, + isBitpayAddress: isBitpayAddress, + isCashAddress: isCashAddress, + isSlpAddress: isSlpAddress, + isMainnetAddress: isMainnetAddress, + isTestnetAddress: isTestnetAddress, + isP2PKHAddress: isP2PKHAddress, + isP2SHAddress: isP2SHAddress, + InvalidAddressError: InvalidAddressError +} + +}).call(this,require("buffer").Buffer) +},{"bs58check":140,"buffer":146,"cashaddrjs-slp":148}],58:[function(require,module,exports){ +(function (Buffer){ +/*** + * @license + * https://github.com/bitcoincashjs/bchaddr + * Copyright (c) 2018-2019 Emilio Almansi + * Distributed under the MIT software license, see the accompanying + * file LICENSE or http://www.opensource.org/licenses/mit-license.php. + */ + +var bs58check = require('bs58check') +var cashaddr = require('cashaddrjs') + +/** + * General purpose Bitcoin Cash address detection and translation.
+ * Supports all major Bitcoin Cash address formats.
+ * Currently: + *
    + *
  • Legacy format
    • + *
  • Bitpay format
    • + *
  • Cashaddr format
    • + *
+ * @module bchaddr + */ + +/** + * @static + * Supported Bitcoin Cash address formats. + */ +var Format = {} +Format.Legacy = 'legacy' +Format.Bitpay = 'bitpay' +Format.Cashaddr = 'cashaddr' + +/** + * @static + * Supported networks. + */ +var Network = {} +Network.Mainnet = 'mainnet' +Network.Testnet = 'testnet' + +/** + * @static + * Supported address types. + */ +var Type = {} +Type.P2PKH = 'p2pkh' +Type.P2SH = 'p2sh' + +/** + * Returns a boolean indicating whether the given input is a valid Bitcoin Cash address. + * @static + * @param {*} input - Any input to check for validity. + * @returns {boolean} + */ +function isValidAddress (input) { + try { + decodeAddress(input) + return true + } catch (error) { + return false + } +} + +/** + * Detects what is the given address' format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function detectAddressFormat (address) { + return decodeAddress(address).format +} + +/** + * Detects what is the given address' network. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function detectAddressNetwork (address) { + return decodeAddress(address).network +} + +/** + * Detects what is the given address' type. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function detectAddressType (address) { + return decodeAddress(address).type +} + +/** + * Translates the given address into legacy format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toLegacyAddress (address) { + var decoded = decodeAddress(address) + if (decoded.format === Format.Legacy) { + return address + } + return encodeAsLegacy(decoded) +} + +/** + * Translates the given address into bitpay format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toBitpayAddress (address) { + var decoded = decodeAddress(address) + if (decoded.format === Format.Bitpay) { + return address + } + return encodeAsBitpay(decoded) +} + +/** + * Translates the given address into cashaddr format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {string} + * @throws {InvalidAddressError} + */ +function toCashAddress (address) { + var decoded = decodeAddress(address) + return encodeAsCashaddr(decoded) +} + +/** + * Version byte table for base58 formats. + * @private + */ +var VERSION_BYTE = {} +VERSION_BYTE[Format.Legacy] = {} +VERSION_BYTE[Format.Legacy][Network.Mainnet] = {} +VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH] = 0 +VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH] = 5 +VERSION_BYTE[Format.Legacy][Network.Testnet] = {} +VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH] = 111 +VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH] = 196 +VERSION_BYTE[Format.Bitpay] = {} +VERSION_BYTE[Format.Bitpay][Network.Mainnet] = {} +VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH] = 28 +VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH] = 40 +VERSION_BYTE[Format.Bitpay][Network.Testnet] = {} +VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2PKH] = 111 +VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2SH] = 196 + +/** + * Decodes the given address into its constituting hash, format, network and type. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeAddress (address) { + try { + return decodeBase58Address(address) + } catch (error) { + } + try { + return decodeCashAddress(address) + } catch (error) { + } + throw new InvalidAddressError() +} + +/** + * Length of a valid base58check encoding payload: 1 byte for + * the version byte plus 20 bytes for a RIPEMD-160 hash. + * @private + */ +var BASE_58_CHECK_PAYLOAD_LENGTH = 21 + +/** + * Attempts to decode the given address assuming it is a base58 address. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeBase58Address (address) { + try { + var payload = bs58check.decode(address) + if (payload.length !== BASE_58_CHECK_PAYLOAD_LENGTH) { + throw new InvalidAddressError() + } + var versionByte = payload[0] + var hash = Array.prototype.slice.call(payload, 1) + switch (versionByte) { + case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Mainnet, + type: Type.P2PKH + } + case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Mainnet, + type: Type.P2SH + } + case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Testnet, + type: Type.P2PKH + } + case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH]: + return { + hash: hash, + format: Format.Legacy, + network: Network.Testnet, + type: Type.P2SH + } + case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH]: + return { + hash: hash, + format: Format.Bitpay, + network: Network.Mainnet, + type: Type.P2PKH + } + case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH]: + return { + hash: hash, + format: Format.Bitpay, + network: Network.Mainnet, + type: Type.P2SH + } + } + } catch (error) { + } + throw new InvalidAddressError() +} + +/** + * Attempts to decode the given address assuming it is a cashaddr address. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeCashAddress (address) { + if (address.indexOf(':') !== -1) { + try { + return decodeCashAddressWithPrefix(address) + } catch (error) { + } + } else { + var prefixes = ['bitcoincash', 'bchtest', 'bchreg'] + for (var i = 0; i < prefixes.length; ++i) { + try { + var prefix = prefixes[i] + return decodeCashAddressWithPrefix(prefix + ':' + address) + } catch (error) { + } + } + } + throw new InvalidAddressError() +} + +/** + * Attempts to decode the given address assuming it is a cashaddr address with explicit prefix. + * @private + * @param {string} address - A valid Bitcoin Cash address in any format. + * @return {object} + * @throws {InvalidAddressError} + */ +function decodeCashAddressWithPrefix (address) { + try { + var decoded = cashaddr.decode(address) + var hash = Array.prototype.slice.call(decoded.hash, 0) + var type = decoded.type === 'P2PKH' ? Type.P2PKH : Type.P2SH + switch (decoded.prefix) { + case 'bitcoincash': + return { + hash: hash, + format: Format.Cashaddr, + network: Network.Mainnet, + type: type + } + case 'bchtest': + case 'bchreg': + return { + hash: hash, + format: Format.Cashaddr, + network: Network.Testnet, + type: type + } + } + } catch (error) { + } + throw new InvalidAddressError() +} + +/** + * Encodes the given decoded address into legacy format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsLegacy (decoded) { + var versionByte = VERSION_BYTE[Format.Legacy][decoded.network][decoded.type] + var buffer = Buffer.alloc(1 + decoded.hash.length) + buffer[0] = versionByte + buffer.set(decoded.hash, 1) + return bs58check.encode(buffer) +} + +/** + * Encodes the given decoded address into bitpay format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsBitpay (decoded) { + var versionByte = VERSION_BYTE[Format.Bitpay][decoded.network][decoded.type] + var buffer = Buffer.alloc(1 + decoded.hash.length) + buffer[0] = versionByte + buffer.set(decoded.hash, 1) + return bs58check.encode(buffer) +} + +/** + * Encodes the given decoded address into cashaddr format. + * @private + * @param {object} decoded + * @returns {string} + */ +function encodeAsCashaddr (decoded) { + var prefix = decoded.network === Network.Mainnet ? 'bitcoincash' : 'bchtest' + var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH' + var hash = new Uint8Array(decoded.hash) + return cashaddr.encode(prefix, type, hash) +} + +/** + * Returns a boolean indicating whether the address is in legacy format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isLegacyAddress (address) { + return detectAddressFormat(address) === Format.Legacy +} + +/** + * Returns a boolean indicating whether the address is in bitpay format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isBitpayAddress (address) { + return detectAddressFormat(address) === Format.Bitpay +} + +/** + * Returns a boolean indicating whether the address is in cashaddr format. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isCashAddress (address) { + return detectAddressFormat(address) === Format.Cashaddr +} + +/** + * Returns a boolean indicating whether the address is a mainnet address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isMainnetAddress (address) { + return detectAddressNetwork(address) === Network.Mainnet +} + +/** + * Returns a boolean indicating whether the address is a testnet address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isTestnetAddress (address) { + return detectAddressNetwork(address) === Network.Testnet +} + +/** + * Returns a boolean indicating whether the address is a p2pkh address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isP2PKHAddress (address) { + return detectAddressType(address) === Type.P2PKH +} + +/** + * Returns a boolean indicating whether the address is a p2sh address. + * @static + * @param {string} address - A valid Bitcoin Cash address in any format. + * @returns {boolean} + * @throws {InvalidAddressError} + */ +function isP2SHAddress (address) { + return detectAddressType(address) === Type.P2SH +} + +/** + * Error thrown when the address given as input is not a valid Bitcoin Cash address. + * @constructor + * InvalidAddressError + */ +function InvalidAddressError () { + var error = new Error() + this.name = error.name = 'InvalidAddressError' + this.message = error.message = 'Received an invalid Bitcoin Cash address as input.' + this.stack = error.stack +} + +InvalidAddressError.prototype = Object.create(Error.prototype) + +module.exports = { + Format: Format, + Network: Network, + Type: Type, + isValidAddress: isValidAddress, + detectAddressFormat: detectAddressFormat, + detectAddressNetwork: detectAddressNetwork, + detectAddressType: detectAddressType, + toLegacyAddress: toLegacyAddress, + toBitpayAddress: toBitpayAddress, + toCashAddress: toCashAddress, + isLegacyAddress: isLegacyAddress, + isBitpayAddress: isBitpayAddress, + isCashAddress: isCashAddress, + isMainnetAddress: isMainnetAddress, + isTestnetAddress: isTestnetAddress, + isP2PKHAddress: isP2PKHAddress, + isP2SHAddress: isP2SHAddress, + InvalidAddressError: InvalidAddressError +} + +}).call(this,require("buffer").Buffer) +},{"bs58check":140,"buffer":146,"cashaddrjs":152}],59:[function(require,module,exports){ +'use strict' +var ALPHABET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l' + +// pre-compute lookup table +var ALPHABET_MAP = {} +for (var z = 0; z < ALPHABET.length; z++) { + var x = ALPHABET.charAt(z) + + if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous') + ALPHABET_MAP[x] = z +} + +function polymodStep (pre) { + var b = pre >> 25 + return ((pre & 0x1FFFFFF) << 5) ^ + (-((b >> 0) & 1) & 0x3b6a57b2) ^ + (-((b >> 1) & 1) & 0x26508e6d) ^ + (-((b >> 2) & 1) & 0x1ea119fa) ^ + (-((b >> 3) & 1) & 0x3d4233dd) ^ + (-((b >> 4) & 1) & 0x2a1462b3) +} + +function prefixChk (prefix) { + var chk = 1 + for (var i = 0; i < prefix.length; ++i) { + var c = prefix.charCodeAt(i) + if (c < 33 || c > 126) throw new Error('Invalid prefix (' + prefix + ')') + + chk = polymodStep(chk) ^ (c >> 5) + } + chk = polymodStep(chk) + + for (i = 0; i < prefix.length; ++i) { + var v = prefix.charCodeAt(i) + chk = polymodStep(chk) ^ (v & 0x1f) + } + return chk +} + +function encode (prefix, words, LIMIT) { + LIMIT = LIMIT || 90 + if ((prefix.length + 7 + words.length) > LIMIT) throw new TypeError('Exceeds length limit') + + prefix = prefix.toLowerCase() + + // determine chk mod + var chk = prefixChk(prefix) + var result = prefix + '1' + for (var i = 0; i < words.length; ++i) { + var x = words[i] + if ((x >> 5) !== 0) throw new Error('Non 5-bit word') + + chk = polymodStep(chk) ^ x + result += ALPHABET.charAt(x) + } + + for (i = 0; i < 6; ++i) { + chk = polymodStep(chk) + } + chk ^= 1 + + for (i = 0; i < 6; ++i) { + var v = (chk >> ((5 - i) * 5)) & 0x1f + result += ALPHABET.charAt(v) + } + + return result +} + +function decode (str, LIMIT) { + LIMIT = LIMIT || 90 + if (str.length < 8) throw new TypeError(str + ' too short') + if (str.length > LIMIT) throw new TypeError('Exceeds length limit') + + // don't allow mixed case + var lowered = str.toLowerCase() + var uppered = str.toUpperCase() + if (str !== lowered && str !== uppered) throw new Error('Mixed-case string ' + str) + str = lowered + + var split = str.lastIndexOf('1') + if (split === -1) throw new Error('No separator character for ' + str) + if (split === 0) throw new Error('Missing prefix for ' + str) + + var prefix = str.slice(0, split) + var wordChars = str.slice(split + 1) + if (wordChars.length < 6) throw new Error('Data too short') + + var chk = prefixChk(prefix) + var words = [] + for (var i = 0; i < wordChars.length; ++i) { + var c = wordChars.charAt(i) + var v = ALPHABET_MAP[c] + if (v === undefined) throw new Error('Unknown character ' + c) + chk = polymodStep(chk) ^ v + + // not in the checksum? + if (i + 6 >= wordChars.length) continue + words.push(v) + } + + if (chk !== 1) throw new Error('Invalid checksum for ' + str) + return { prefix: prefix, words: words } +} + +function convert (data, inBits, outBits, pad) { + var value = 0 + var bits = 0 + var maxV = (1 << outBits) - 1 + + var result = [] + for (var i = 0; i < data.length; ++i) { + value = (value << inBits) | data[i] + bits += inBits + + while (bits >= outBits) { + bits -= outBits + result.push((value >> bits) & maxV) + } + } + + if (pad) { + if (bits > 0) { + result.push((value << (outBits - bits)) & maxV) + } + } else { + if (bits >= inBits) throw new Error('Excess padding') + if ((value << (outBits - bits)) & maxV) throw new Error('Non-zero padding') + } + + return result +} + +function toWords (bytes) { + return convert(bytes, 8, 5, true) +} + +function fromWords (words) { + return convert(words, 5, 8, false) +} + +module.exports = { + decode: decode, + encode: encode, + toWords: toWords, + fromWords: fromWords +} + +},{}],60:[function(require,module,exports){ +var bigInt = (function (undefined) { + "use strict"; + + var BASE = 1e7, + LOG_BASE = 7, + MAX_INT = 9007199254740992, + MAX_INT_ARR = smallToArray(MAX_INT), + LOG_MAX_INT = Math.log(MAX_INT); + + function Integer(v, radix) { + if (typeof v === "undefined") return Integer[0]; + if (typeof radix !== "undefined") return +radix === 10 ? parseValue(v) : parseBase(v, radix); + return parseValue(v); + } + + function BigInteger(value, sign) { + this.value = value; + this.sign = sign; + this.isSmall = false; + } + BigInteger.prototype = Object.create(Integer.prototype); + + function SmallInteger(value) { + this.value = value; + this.sign = value < 0; + this.isSmall = true; + } + SmallInteger.prototype = Object.create(Integer.prototype); + + function isPrecise(n) { + return -MAX_INT < n && n < MAX_INT; + } + + function smallToArray(n) { // For performance reasons doesn't reference BASE, need to change this function if BASE changes + if (n < 1e7) + return [n]; + if (n < 1e14) + return [n % 1e7, Math.floor(n / 1e7)]; + return [n % 1e7, Math.floor(n / 1e7) % 1e7, Math.floor(n / 1e14)]; + } + + function arrayToSmall(arr) { // If BASE changes this function may need to change + trim(arr); + var length = arr.length; + if (length < 4 && compareAbs(arr, MAX_INT_ARR) < 0) { + switch (length) { + case 0: return 0; + case 1: return arr[0]; + case 2: return arr[0] + arr[1] * BASE; + default: return arr[0] + (arr[1] + arr[2] * BASE) * BASE; + } + } + return arr; + } + + function trim(v) { + var i = v.length; + while (v[--i] === 0); + v.length = i + 1; + } + + function createArray(length) { // function shamelessly stolen from Yaffle's library https://github.com/Yaffle/BigInteger + var x = new Array(length); + var i = -1; + while (++i < length) { + x[i] = 0; + } + return x; + } + + function truncate(n) { + if (n > 0) return Math.floor(n); + return Math.ceil(n); + } + + function add(a, b) { // assumes a and b are arrays with a.length >= b.length + var l_a = a.length, + l_b = b.length, + r = new Array(l_a), + carry = 0, + base = BASE, + sum, i; + for (i = 0; i < l_b; i++) { + sum = a[i] + b[i] + carry; + carry = sum >= base ? 1 : 0; + r[i] = sum - carry * base; + } + while (i < l_a) { + sum = a[i] + carry; + carry = sum === base ? 1 : 0; + r[i++] = sum - carry * base; + } + if (carry > 0) r.push(carry); + return r; + } + + function addAny(a, b) { + if (a.length >= b.length) return add(a, b); + return add(b, a); + } + + function addSmall(a, carry) { // assumes a is array, carry is number with 0 <= carry < MAX_INT + var l = a.length, + r = new Array(l), + base = BASE, + sum, i; + for (i = 0; i < l; i++) { + sum = a[i] - base + carry; + carry = Math.floor(sum / base); + r[i] = sum - carry * base; + carry += 1; + } + while (carry > 0) { + r[i++] = carry % base; + carry = Math.floor(carry / base); + } + return r; + } + + BigInteger.prototype.add = function (v) { + var n = parseValue(v); + if (this.sign !== n.sign) { + return this.subtract(n.negate()); + } + var a = this.value, b = n.value; + if (n.isSmall) { + return new BigInteger(addSmall(a, Math.abs(b)), this.sign); + } + return new BigInteger(addAny(a, b), this.sign); + }; + BigInteger.prototype.plus = BigInteger.prototype.add; + + SmallInteger.prototype.add = function (v) { + var n = parseValue(v); + var a = this.value; + if (a < 0 !== n.sign) { + return this.subtract(n.negate()); + } + var b = n.value; + if (n.isSmall) { + if (isPrecise(a + b)) return new SmallInteger(a + b); + b = smallToArray(Math.abs(b)); + } + return new BigInteger(addSmall(b, Math.abs(a)), a < 0); + }; + SmallInteger.prototype.plus = SmallInteger.prototype.add; + + function subtract(a, b) { // assumes a and b are arrays with a >= b + var a_l = a.length, + b_l = b.length, + r = new Array(a_l), + borrow = 0, + base = BASE, + i, difference; + for (i = 0; i < b_l; i++) { + difference = a[i] - borrow - b[i]; + if (difference < 0) { + difference += base; + borrow = 1; + } else borrow = 0; + r[i] = difference; + } + for (i = b_l; i < a_l; i++) { + difference = a[i] - borrow; + if (difference < 0) difference += base; + else { + r[i++] = difference; + break; + } + r[i] = difference; + } + for (; i < a_l; i++) { + r[i] = a[i]; + } + trim(r); + return r; + } + + function subtractAny(a, b, sign) { + var value; + if (compareAbs(a, b) >= 0) { + value = subtract(a, b); + } else { + value = subtract(b, a); + sign = !sign; + } + value = arrayToSmall(value); + if (typeof value === "number") { + if (sign) value = -value; + return new SmallInteger(value); + } + return new BigInteger(value, sign); + } + + function subtractSmall(a, b, sign) { // assumes a is array, b is number with 0 <= b < MAX_INT + var l = a.length, + r = new Array(l), + carry = -b, + base = BASE, + i, difference; + for (i = 0; i < l; i++) { + difference = a[i] + carry; + carry = Math.floor(difference / base); + difference %= base; + r[i] = difference < 0 ? difference + base : difference; + } + r = arrayToSmall(r); + if (typeof r === "number") { + if (sign) r = -r; + return new SmallInteger(r); + } return new BigInteger(r, sign); + } + + BigInteger.prototype.subtract = function (v) { + var n = parseValue(v); + if (this.sign !== n.sign) { + return this.add(n.negate()); + } + var a = this.value, b = n.value; + if (n.isSmall) + return subtractSmall(a, Math.abs(b), this.sign); + return subtractAny(a, b, this.sign); + }; + BigInteger.prototype.minus = BigInteger.prototype.subtract; + + SmallInteger.prototype.subtract = function (v) { + var n = parseValue(v); + var a = this.value; + if (a < 0 !== n.sign) { + return this.add(n.negate()); + } + var b = n.value; + if (n.isSmall) { + return new SmallInteger(a - b); + } + return subtractSmall(b, Math.abs(a), a >= 0); + }; + SmallInteger.prototype.minus = SmallInteger.prototype.subtract; + + BigInteger.prototype.negate = function () { + return new BigInteger(this.value, !this.sign); + }; + SmallInteger.prototype.negate = function () { + var sign = this.sign; + var small = new SmallInteger(-this.value); + small.sign = !sign; + return small; + }; + + BigInteger.prototype.abs = function () { + return new BigInteger(this.value, false); + }; + SmallInteger.prototype.abs = function () { + return new SmallInteger(Math.abs(this.value)); + }; + + function multiplyLong(a, b) { + var a_l = a.length, + b_l = b.length, + l = a_l + b_l, + r = createArray(l), + base = BASE, + product, carry, i, a_i, b_j; + for (i = 0; i < a_l; ++i) { + a_i = a[i]; + for (var j = 0; j < b_l; ++j) { + b_j = b[j]; + product = a_i * b_j + r[i + j]; + carry = Math.floor(product / base); + r[i + j] = product - carry * base; + r[i + j + 1] += carry; + } + } + trim(r); + return r; + } + + function multiplySmall(a, b) { // assumes a is array, b is number with |b| < BASE + var l = a.length, + r = new Array(l), + base = BASE, + carry = 0, + product, i; + for (i = 0; i < l; i++) { + product = a[i] * b + carry; + carry = Math.floor(product / base); + r[i] = product - carry * base; + } + while (carry > 0) { + r[i++] = carry % base; + carry = Math.floor(carry / base); + } + return r; + } + + function shiftLeft(x, n) { + var r = []; + while (n-- > 0) r.push(0); + return r.concat(x); + } + + function multiplyKaratsuba(x, y) { + var n = Math.max(x.length, y.length); + + if (n <= 30) return multiplyLong(x, y); + n = Math.ceil(n / 2); + + var b = x.slice(n), + a = x.slice(0, n), + d = y.slice(n), + c = y.slice(0, n); + + var ac = multiplyKaratsuba(a, c), + bd = multiplyKaratsuba(b, d), + abcd = multiplyKaratsuba(addAny(a, b), addAny(c, d)); + + var product = addAny(addAny(ac, shiftLeft(subtract(subtract(abcd, ac), bd), n)), shiftLeft(bd, 2 * n)); + trim(product); + return product; + } + + // The following function is derived from a surface fit of a graph plotting the performance difference + // between long multiplication and karatsuba multiplication versus the lengths of the two arrays. + function useKaratsuba(l1, l2) { + return -0.012 * l1 - 0.012 * l2 + 0.000015 * l1 * l2 > 0; + } + + BigInteger.prototype.multiply = function (v) { + var n = parseValue(v), + a = this.value, b = n.value, + sign = this.sign !== n.sign, + abs; + if (n.isSmall) { + if (b === 0) return Integer[0]; + if (b === 1) return this; + if (b === -1) return this.negate(); + abs = Math.abs(b); + if (abs < BASE) { + return new BigInteger(multiplySmall(a, abs), sign); + } + b = smallToArray(abs); + } + if (useKaratsuba(a.length, b.length)) // Karatsuba is only faster for certain array sizes + return new BigInteger(multiplyKaratsuba(a, b), sign); + return new BigInteger(multiplyLong(a, b), sign); + }; + + BigInteger.prototype.times = BigInteger.prototype.multiply; + + function multiplySmallAndArray(a, b, sign) { // a >= 0 + if (a < BASE) { + return new BigInteger(multiplySmall(b, a), sign); + } + return new BigInteger(multiplyLong(b, smallToArray(a)), sign); + } + SmallInteger.prototype._multiplyBySmall = function (a) { + if (isPrecise(a.value * this.value)) { + return new SmallInteger(a.value * this.value); + } + return multiplySmallAndArray(Math.abs(a.value), smallToArray(Math.abs(this.value)), this.sign !== a.sign); + }; + BigInteger.prototype._multiplyBySmall = function (a) { + if (a.value === 0) return Integer[0]; + if (a.value === 1) return this; + if (a.value === -1) return this.negate(); + return multiplySmallAndArray(Math.abs(a.value), this.value, this.sign !== a.sign); + }; + SmallInteger.prototype.multiply = function (v) { + return parseValue(v)._multiplyBySmall(this); + }; + SmallInteger.prototype.times = SmallInteger.prototype.multiply; + + function square(a) { + //console.assert(2 * BASE * BASE < MAX_INT); + var l = a.length, + r = createArray(l + l), + base = BASE, + product, carry, i, a_i, a_j; + for (i = 0; i < l; i++) { + a_i = a[i]; + carry = 0 - a_i * a_i; + for (var j = i; j < l; j++) { + a_j = a[j]; + product = 2 * (a_i * a_j) + r[i + j] + carry; + carry = Math.floor(product / base); + r[i + j] = product - carry * base; + } + r[i + l] = carry; + } + trim(r); + return r; + } + + BigInteger.prototype.square = function () { + return new BigInteger(square(this.value), false); + }; + + SmallInteger.prototype.square = function () { + var value = this.value * this.value; + if (isPrecise(value)) return new SmallInteger(value); + return new BigInteger(square(smallToArray(Math.abs(this.value))), false); + }; + + function divMod1(a, b) { // Left over from previous version. Performs faster than divMod2 on smaller input sizes. + var a_l = a.length, + b_l = b.length, + base = BASE, + result = createArray(b.length), + divisorMostSignificantDigit = b[b_l - 1], + // normalization + lambda = Math.ceil(base / (2 * divisorMostSignificantDigit)), + remainder = multiplySmall(a, lambda), + divisor = multiplySmall(b, lambda), + quotientDigit, shift, carry, borrow, i, l, q; + if (remainder.length <= a_l) remainder.push(0); + divisor.push(0); + divisorMostSignificantDigit = divisor[b_l - 1]; + for (shift = a_l - b_l; shift >= 0; shift--) { + quotientDigit = base - 1; + if (remainder[shift + b_l] !== divisorMostSignificantDigit) { + quotientDigit = Math.floor((remainder[shift + b_l] * base + remainder[shift + b_l - 1]) / divisorMostSignificantDigit); + } + // quotientDigit <= base - 1 + carry = 0; + borrow = 0; + l = divisor.length; + for (i = 0; i < l; i++) { + carry += quotientDigit * divisor[i]; + q = Math.floor(carry / base); + borrow += remainder[shift + i] - (carry - q * base); + carry = q; + if (borrow < 0) { + remainder[shift + i] = borrow + base; + borrow = -1; + } else { + remainder[shift + i] = borrow; + borrow = 0; + } + } + while (borrow !== 0) { + quotientDigit -= 1; + carry = 0; + for (i = 0; i < l; i++) { + carry += remainder[shift + i] - base + divisor[i]; + if (carry < 0) { + remainder[shift + i] = carry + base; + carry = 0; + } else { + remainder[shift + i] = carry; + carry = 1; + } + } + borrow += carry; + } + result[shift] = quotientDigit; + } + // denormalization + remainder = divModSmall(remainder, lambda)[0]; + return [arrayToSmall(result), arrayToSmall(remainder)]; + } + + function divMod2(a, b) { // Implementation idea shamelessly stolen from Silent Matt's library http://silentmatt.com/biginteger/ + // Performs faster than divMod1 on larger input sizes. + var a_l = a.length, + b_l = b.length, + result = [], + part = [], + base = BASE, + guess, xlen, highx, highy, check; + while (a_l) { + part.unshift(a[--a_l]); + trim(part); + if (compareAbs(part, b) < 0) { + result.push(0); + continue; + } + xlen = part.length; + highx = part[xlen - 1] * base + part[xlen - 2]; + highy = b[b_l - 1] * base + b[b_l - 2]; + if (xlen > b_l) { + highx = (highx + 1) * base; + } + guess = Math.ceil(highx / highy); + do { + check = multiplySmall(b, guess); + if (compareAbs(check, part) <= 0) break; + guess--; + } while (guess); + result.push(guess); + part = subtract(part, check); + } + result.reverse(); + return [arrayToSmall(result), arrayToSmall(part)]; + } + + function divModSmall(value, lambda) { + var length = value.length, + quotient = createArray(length), + base = BASE, + i, q, remainder, divisor; + remainder = 0; + for (i = length - 1; i >= 0; --i) { + divisor = remainder * base + value[i]; + q = truncate(divisor / lambda); + remainder = divisor - q * lambda; + quotient[i] = q | 0; + } + return [quotient, remainder | 0]; + } + + function divModAny(self, v) { + var value, n = parseValue(v); + var a = self.value, b = n.value; + var quotient; + if (b === 0) throw new Error("Cannot divide by zero"); + if (self.isSmall) { + if (n.isSmall) { + return [new SmallInteger(truncate(a / b)), new SmallInteger(a % b)]; + } + return [Integer[0], self]; + } + if (n.isSmall) { + if (b === 1) return [self, Integer[0]]; + if (b == -1) return [self.negate(), Integer[0]]; + var abs = Math.abs(b); + if (abs < BASE) { + value = divModSmall(a, abs); + quotient = arrayToSmall(value[0]); + var remainder = value[1]; + if (self.sign) remainder = -remainder; + if (typeof quotient === "number") { + if (self.sign !== n.sign) quotient = -quotient; + return [new SmallInteger(quotient), new SmallInteger(remainder)]; + } + return [new BigInteger(quotient, self.sign !== n.sign), new SmallInteger(remainder)]; + } + b = smallToArray(abs); + } + var comparison = compareAbs(a, b); + if (comparison === -1) return [Integer[0], self]; + if (comparison === 0) return [Integer[self.sign === n.sign ? 1 : -1], Integer[0]]; + + // divMod1 is faster on smaller input sizes + if (a.length + b.length <= 200) + value = divMod1(a, b); + else value = divMod2(a, b); + + quotient = value[0]; + var qSign = self.sign !== n.sign, + mod = value[1], + mSign = self.sign; + if (typeof quotient === "number") { + if (qSign) quotient = -quotient; + quotient = new SmallInteger(quotient); + } else quotient = new BigInteger(quotient, qSign); + if (typeof mod === "number") { + if (mSign) mod = -mod; + mod = new SmallInteger(mod); + } else mod = new BigInteger(mod, mSign); + return [quotient, mod]; + } + + BigInteger.prototype.divmod = function (v) { + var result = divModAny(this, v); + return { + quotient: result[0], + remainder: result[1] + }; + }; + SmallInteger.prototype.divmod = BigInteger.prototype.divmod; + + BigInteger.prototype.divide = function (v) { + return divModAny(this, v)[0]; + }; + SmallInteger.prototype.over = SmallInteger.prototype.divide = BigInteger.prototype.over = BigInteger.prototype.divide; + + BigInteger.prototype.mod = function (v) { + return divModAny(this, v)[1]; + }; + SmallInteger.prototype.remainder = SmallInteger.prototype.mod = BigInteger.prototype.remainder = BigInteger.prototype.mod; + + BigInteger.prototype.pow = function (v) { + var n = parseValue(v), + a = this.value, + b = n.value, + value, x, y; + if (b === 0) return Integer[1]; + if (a === 0) return Integer[0]; + if (a === 1) return Integer[1]; + if (a === -1) return n.isEven() ? Integer[1] : Integer[-1]; + if (n.sign) { + return Integer[0]; + } + if (!n.isSmall) throw new Error("The exponent " + n.toString() + " is too large."); + if (this.isSmall) { + if (isPrecise(value = Math.pow(a, b))) + return new SmallInteger(truncate(value)); + } + x = this; + y = Integer[1]; + while (true) { + if (b & 1 === 1) { + y = y.times(x); + --b; + } + if (b === 0) break; + b /= 2; + x = x.square(); + } + return y; + }; + SmallInteger.prototype.pow = BigInteger.prototype.pow; + + BigInteger.prototype.modPow = function (exp, mod) { + exp = parseValue(exp); + mod = parseValue(mod); + if (mod.isZero()) throw new Error("Cannot take modPow with modulus 0"); + var r = Integer[1], + base = this.mod(mod); + while (exp.isPositive()) { + if (base.isZero()) return Integer[0]; + if (exp.isOdd()) r = r.multiply(base).mod(mod); + exp = exp.divide(2); + base = base.square().mod(mod); + } + return r; + }; + SmallInteger.prototype.modPow = BigInteger.prototype.modPow; + + function compareAbs(a, b) { + if (a.length !== b.length) { + return a.length > b.length ? 1 : -1; + } + for (var i = a.length - 1; i >= 0; i--) { + if (a[i] !== b[i]) return a[i] > b[i] ? 1 : -1; + } + return 0; + } + + BigInteger.prototype.compareAbs = function (v) { + var n = parseValue(v), + a = this.value, + b = n.value; + if (n.isSmall) return 1; + return compareAbs(a, b); + }; + SmallInteger.prototype.compareAbs = function (v) { + var n = parseValue(v), + a = Math.abs(this.value), + b = n.value; + if (n.isSmall) { + b = Math.abs(b); + return a === b ? 0 : a > b ? 1 : -1; + } + return -1; + }; + + BigInteger.prototype.compare = function (v) { + // See discussion about comparison with Infinity: + // https://github.com/peterolson/BigInteger.js/issues/61 + if (v === Infinity) { + return -1; + } + if (v === -Infinity) { + return 1; + } + + var n = parseValue(v), + a = this.value, + b = n.value; + if (this.sign !== n.sign) { + return n.sign ? 1 : -1; + } + if (n.isSmall) { + return this.sign ? -1 : 1; + } + return compareAbs(a, b) * (this.sign ? -1 : 1); + }; + BigInteger.prototype.compareTo = BigInteger.prototype.compare; + + SmallInteger.prototype.compare = function (v) { + if (v === Infinity) { + return -1; + } + if (v === -Infinity) { + return 1; + } + + var n = parseValue(v), + a = this.value, + b = n.value; + if (n.isSmall) { + return a == b ? 0 : a > b ? 1 : -1; + } + if (a < 0 !== n.sign) { + return a < 0 ? -1 : 1; + } + return a < 0 ? 1 : -1; + }; + SmallInteger.prototype.compareTo = SmallInteger.prototype.compare; + + BigInteger.prototype.equals = function (v) { + return this.compare(v) === 0; + }; + SmallInteger.prototype.eq = SmallInteger.prototype.equals = BigInteger.prototype.eq = BigInteger.prototype.equals; + + BigInteger.prototype.notEquals = function (v) { + return this.compare(v) !== 0; + }; + SmallInteger.prototype.neq = SmallInteger.prototype.notEquals = BigInteger.prototype.neq = BigInteger.prototype.notEquals; + + BigInteger.prototype.greater = function (v) { + return this.compare(v) > 0; + }; + SmallInteger.prototype.gt = SmallInteger.prototype.greater = BigInteger.prototype.gt = BigInteger.prototype.greater; + + BigInteger.prototype.lesser = function (v) { + return this.compare(v) < 0; + }; + SmallInteger.prototype.lt = SmallInteger.prototype.lesser = BigInteger.prototype.lt = BigInteger.prototype.lesser; + + BigInteger.prototype.greaterOrEquals = function (v) { + return this.compare(v) >= 0; + }; + SmallInteger.prototype.geq = SmallInteger.prototype.greaterOrEquals = BigInteger.prototype.geq = BigInteger.prototype.greaterOrEquals; + + BigInteger.prototype.lesserOrEquals = function (v) { + return this.compare(v) <= 0; + }; + SmallInteger.prototype.leq = SmallInteger.prototype.lesserOrEquals = BigInteger.prototype.leq = BigInteger.prototype.lesserOrEquals; + + BigInteger.prototype.isEven = function () { + return (this.value[0] & 1) === 0; + }; + SmallInteger.prototype.isEven = function () { + return (this.value & 1) === 0; + }; + + BigInteger.prototype.isOdd = function () { + return (this.value[0] & 1) === 1; + }; + SmallInteger.prototype.isOdd = function () { + return (this.value & 1) === 1; + }; + + BigInteger.prototype.isPositive = function () { + return !this.sign; + }; + SmallInteger.prototype.isPositive = function () { + return this.value > 0; + }; + + BigInteger.prototype.isNegative = function () { + return this.sign; + }; + SmallInteger.prototype.isNegative = function () { + return this.value < 0; + }; + + BigInteger.prototype.isUnit = function () { + return false; + }; + SmallInteger.prototype.isUnit = function () { + return Math.abs(this.value) === 1; + }; + + BigInteger.prototype.isZero = function () { + return false; + }; + SmallInteger.prototype.isZero = function () { + return this.value === 0; + }; + BigInteger.prototype.isDivisibleBy = function (v) { + var n = parseValue(v); + var value = n.value; + if (value === 0) return false; + if (value === 1) return true; + if (value === 2) return this.isEven(); + return this.mod(n).equals(Integer[0]); + }; + SmallInteger.prototype.isDivisibleBy = BigInteger.prototype.isDivisibleBy; + + function isBasicPrime(v) { + var n = v.abs(); + if (n.isUnit()) return false; + if (n.equals(2) || n.equals(3) || n.equals(5)) return true; + if (n.isEven() || n.isDivisibleBy(3) || n.isDivisibleBy(5)) return false; + if (n.lesser(49)) return true; + // we don't know if it's prime: let the other functions figure it out + } + + function millerRabinTest(n, a) { + var nPrev = n.prev(), + b = nPrev, + r = 0, + d, t, i, x; + while (b.isEven()) b = b.divide(2), r++; + next : for (i = 0; i < a.length; i++) { + if (n.lesser(a[i])) continue; + x = bigInt(a[i]).modPow(b, n); + if (x.equals(Integer[1]) || x.equals(nPrev)) continue; + for (d = r - 1; d != 0; d--) { + x = x.square().mod(n); + if (x.isUnit()) return false; + if (x.equals(nPrev)) continue next; + } + return false; + } + return true; + } + +// Set "strict" to true to force GRH-supported lower bound of 2*log(N)^2 + BigInteger.prototype.isPrime = function (strict) { + var isPrime = isBasicPrime(this); + if (isPrime !== undefined) return isPrime; + var n = this.abs(); + var bits = n.bitLength(); + if(bits <= 64) + return millerRabinTest(n, [2, 325, 9375, 28178, 450775, 9780504, 1795265022]); + var logN = Math.log(2) * bits; + var t = Math.ceil((strict === true) ? (2 * Math.pow(logN, 2)) : logN); + for (var a = [], i = 0; i < t; i++) { + a.push(bigInt(i + 2)); + } + return millerRabinTest(n, a); + }; + SmallInteger.prototype.isPrime = BigInteger.prototype.isPrime; + + BigInteger.prototype.isProbablePrime = function (iterations) { + var isPrime = isBasicPrime(this); + if (isPrime !== undefined) return isPrime; + var n = this.abs(); + var t = iterations === undefined ? 5 : iterations; + for (var a = [], i = 0; i < t; i++) { + a.push(bigInt.randBetween(2, n.minus(2))); + } + return millerRabinTest(n, a); + }; + SmallInteger.prototype.isProbablePrime = BigInteger.prototype.isProbablePrime; + + BigInteger.prototype.modInv = function (n) { + var t = bigInt.zero, newT = bigInt.one, r = parseValue(n), newR = this.abs(), q, lastT, lastR; + while (!newR.equals(bigInt.zero)) { + q = r.divide(newR); + lastT = t; + lastR = r; + t = newT; + r = newR; + newT = lastT.subtract(q.multiply(newT)); + newR = lastR.subtract(q.multiply(newR)); + } + if (!r.equals(1)) throw new Error(this.toString() + " and " + n.toString() + " are not co-prime"); + if (t.compare(0) === -1) { + t = t.add(n); + } + if (this.isNegative()) { + return t.negate(); + } + return t; + }; + + SmallInteger.prototype.modInv = BigInteger.prototype.modInv; + + BigInteger.prototype.next = function () { + var value = this.value; + if (this.sign) { + return subtractSmall(value, 1, this.sign); + } + return new BigInteger(addSmall(value, 1), this.sign); + }; + SmallInteger.prototype.next = function () { + var value = this.value; + if (value + 1 < MAX_INT) return new SmallInteger(value + 1); + return new BigInteger(MAX_INT_ARR, false); + }; + + BigInteger.prototype.prev = function () { + var value = this.value; + if (this.sign) { + return new BigInteger(addSmall(value, 1), true); + } + return subtractSmall(value, 1, this.sign); + }; + SmallInteger.prototype.prev = function () { + var value = this.value; + if (value - 1 > -MAX_INT) return new SmallInteger(value - 1); + return new BigInteger(MAX_INT_ARR, true); + }; + + var powersOfTwo = [1]; + while (2 * powersOfTwo[powersOfTwo.length - 1] <= BASE) powersOfTwo.push(2 * powersOfTwo[powersOfTwo.length - 1]); + var powers2Length = powersOfTwo.length, highestPower2 = powersOfTwo[powers2Length - 1]; + + function shift_isSmall(n) { + return ((typeof n === "number" || typeof n === "string") && +Math.abs(n) <= BASE) || + (n instanceof BigInteger && n.value.length <= 1); + } + + BigInteger.prototype.shiftLeft = function (n) { + if (!shift_isSmall(n)) { + throw new Error(String(n) + " is too large for shifting."); + } + n = +n; + if (n < 0) return this.shiftRight(-n); + var result = this; + if (result.isZero()) return result; + while (n >= powers2Length) { + result = result.multiply(highestPower2); + n -= powers2Length - 1; + } + return result.multiply(powersOfTwo[n]); + }; + SmallInteger.prototype.shiftLeft = BigInteger.prototype.shiftLeft; + + BigInteger.prototype.shiftRight = function (n) { + var remQuo; + if (!shift_isSmall(n)) { + throw new Error(String(n) + " is too large for shifting."); + } + n = +n; + if (n < 0) return this.shiftLeft(-n); + var result = this; + while (n >= powers2Length) { + if (result.isZero() || (result.isNegative() && result.isUnit())) return result; + remQuo = divModAny(result, highestPower2); + result = remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0]; + n -= powers2Length - 1; + } + remQuo = divModAny(result, powersOfTwo[n]); + return remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0]; + }; + SmallInteger.prototype.shiftRight = BigInteger.prototype.shiftRight; + + function bitwise(x, y, fn) { + y = parseValue(y); + var xSign = x.isNegative(), ySign = y.isNegative(); + var xRem = xSign ? x.not() : x, + yRem = ySign ? y.not() : y; + var xDigit = 0, yDigit = 0; + var xDivMod = null, yDivMod = null; + var result = []; + while (!xRem.isZero() || !yRem.isZero()) { + xDivMod = divModAny(xRem, highestPower2); + xDigit = xDivMod[1].toJSNumber(); + if (xSign) { + xDigit = highestPower2 - 1 - xDigit; // two's complement for negative numbers + } + + yDivMod = divModAny(yRem, highestPower2); + yDigit = yDivMod[1].toJSNumber(); + if (ySign) { + yDigit = highestPower2 - 1 - yDigit; // two's complement for negative numbers + } + + xRem = xDivMod[0]; + yRem = yDivMod[0]; + result.push(fn(xDigit, yDigit)); + } + var sum = fn(xSign ? 1 : 0, ySign ? 1 : 0) !== 0 ? bigInt(-1) : bigInt(0); + for (var i = result.length - 1; i >= 0; i -= 1) { + sum = sum.multiply(highestPower2).add(bigInt(result[i])); + } + return sum; + } + + BigInteger.prototype.not = function () { + return this.negate().prev(); + }; + SmallInteger.prototype.not = BigInteger.prototype.not; + + BigInteger.prototype.and = function (n) { + return bitwise(this, n, function (a, b) { return a & b; }); + }; + SmallInteger.prototype.and = BigInteger.prototype.and; + + BigInteger.prototype.or = function (n) { + return bitwise(this, n, function (a, b) { return a | b; }); + }; + SmallInteger.prototype.or = BigInteger.prototype.or; + + BigInteger.prototype.xor = function (n) { + return bitwise(this, n, function (a, b) { return a ^ b; }); + }; + SmallInteger.prototype.xor = BigInteger.prototype.xor; + + var LOBMASK_I = 1 << 30, LOBMASK_BI = (BASE & -BASE) * (BASE & -BASE) | LOBMASK_I; + function roughLOB(n) { // get lowestOneBit (rough) + // SmallInteger: return Min(lowestOneBit(n), 1 << 30) + // BigInteger: return Min(lowestOneBit(n), 1 << 14) [BASE=1e7] + var v = n.value, x = typeof v === "number" ? v | LOBMASK_I : v[0] + v[1] * BASE | LOBMASK_BI; + return x & -x; + } + + function integerLogarithm(value, base) { + if (base.compareTo(value) <= 0) { + var tmp = integerLogarithm(value, base.square(base)); + var p = tmp.p; + var e = tmp.e; + var t = p.multiply(base); + return t.compareTo(value) <= 0 ? { p: t, e: e * 2 + 1 } : { p: p, e: e * 2 }; + } + return { p: bigInt(1), e: 0 }; + } + + BigInteger.prototype.bitLength = function () { + var n = this; + if (n.compareTo(bigInt(0)) < 0) { + n = n.negate().subtract(bigInt(1)); + } + if (n.compareTo(bigInt(0)) === 0) { + return bigInt(0); + } + return bigInt(integerLogarithm(n, bigInt(2)).e).add(bigInt(1)); + } + SmallInteger.prototype.bitLength = BigInteger.prototype.bitLength; + + function max(a, b) { + a = parseValue(a); + b = parseValue(b); + return a.greater(b) ? a : b; + } + function min(a, b) { + a = parseValue(a); + b = parseValue(b); + return a.lesser(b) ? a : b; + } + function gcd(a, b) { + a = parseValue(a).abs(); + b = parseValue(b).abs(); + if (a.equals(b)) return a; + if (a.isZero()) return b; + if (b.isZero()) return a; + var c = Integer[1], d, t; + while (a.isEven() && b.isEven()) { + d = Math.min(roughLOB(a), roughLOB(b)); + a = a.divide(d); + b = b.divide(d); + c = c.multiply(d); + } + while (a.isEven()) { + a = a.divide(roughLOB(a)); + } + do { + while (b.isEven()) { + b = b.divide(roughLOB(b)); + } + if (a.greater(b)) { + t = b; b = a; a = t; + } + b = b.subtract(a); + } while (!b.isZero()); + return c.isUnit() ? a : a.multiply(c); + } + function lcm(a, b) { + a = parseValue(a).abs(); + b = parseValue(b).abs(); + return a.divide(gcd(a, b)).multiply(b); + } + function randBetween(a, b) { + a = parseValue(a); + b = parseValue(b); + var low = min(a, b), high = max(a, b); + var range = high.subtract(low).add(1); + if (range.isSmall) return low.add(Math.floor(Math.random() * range)); + var length = range.value.length - 1; + var result = [], restricted = true; + for (var i = length; i >= 0; i--) { + var top = restricted ? range.value[i] : BASE; + var digit = truncate(Math.random() * top); + result.unshift(digit); + if (digit < top) restricted = false; + } + result = arrayToSmall(result); + return low.add(typeof result === "number" ? new SmallInteger(result) : new BigInteger(result, false)); + } + var parseBase = function (text, base) { + var length = text.length; + var i; + var absBase = Math.abs(base); + for (var i = 0; i < length; i++) { + var c = text[i].toLowerCase(); + if (c === "-") continue; + if (/[a-z0-9]/.test(c)) { + if (/[0-9]/.test(c) && +c >= absBase) { + if (c === "1" && absBase === 1) continue; + throw new Error(c + " is not a valid digit in base " + base + "."); + } else if (c.charCodeAt(0) - 87 >= absBase) { + throw new Error(c + " is not a valid digit in base " + base + "."); + } + } + } + if (2 <= base && base <= 36) { + if (length <= LOG_MAX_INT / Math.log(base)) { + var result = parseInt(text, base); + if (isNaN(result)) { + throw new Error(c + " is not a valid digit in base " + base + "."); + } + return new SmallInteger(parseInt(text, base)); + } + } + base = parseValue(base); + var digits = []; + var isNegative = text[0] === "-"; + for (i = isNegative ? 1 : 0; i < text.length; i++) { + var c = text[i].toLowerCase(), + charCode = c.charCodeAt(0); + if (48 <= charCode && charCode <= 57) digits.push(parseValue(c)); + else if (97 <= charCode && charCode <= 122) digits.push(parseValue(c.charCodeAt(0) - 87)); + else if (c === "<") { + var start = i; + do { i++; } while (text[i] !== ">"); + digits.push(parseValue(text.slice(start + 1, i))); + } + else throw new Error(c + " is not a valid character"); + } + return parseBaseFromArray(digits, base, isNegative); + }; + + function parseBaseFromArray(digits, base, isNegative) { + var val = Integer[0], pow = Integer[1], i; + for (i = digits.length - 1; i >= 0; i--) { + val = val.add(digits[i].times(pow)); + pow = pow.times(base); + } + return isNegative ? val.negate() : val; + } + + function stringify(digit) { + if (digit <= 35) { + return "0123456789abcdefghijklmnopqrstuvwxyz".charAt(digit); + } + return "<" + digit + ">"; + } + + function toBase(n, base) { + base = bigInt(base); + if (base.isZero()) { + if (n.isZero()) return { value: [0], isNegative: false }; + throw new Error("Cannot convert nonzero numbers to base 0."); + } + if (base.equals(-1)) { + if (n.isZero()) return { value: [0], isNegative: false }; + if (n.isNegative()) + return { + value: [].concat.apply([], Array.apply(null, Array(-n)) + .map(Array.prototype.valueOf, [1, 0]) + ), + isNegative: false + }; + + var arr = Array.apply(null, Array(+n - 1)) + .map(Array.prototype.valueOf, [0, 1]); + arr.unshift([1]); + return { + value: [].concat.apply([], arr), + isNegative: false + }; + } + + var neg = false; + if (n.isNegative() && base.isPositive()) { + neg = true; + n = n.abs(); + } + if (base.equals(1)) { + if (n.isZero()) return { value: [0], isNegative: false }; + + return { + value: Array.apply(null, Array(+n)) + .map(Number.prototype.valueOf, 1), + isNegative: neg + }; + } + var out = []; + var left = n, divmod; + while (left.isNegative() || left.compareAbs(base) >= 0) { + divmod = left.divmod(base); + left = divmod.quotient; + var digit = divmod.remainder; + if (digit.isNegative()) { + digit = base.minus(digit).abs(); + left = left.next(); + } + out.push(digit.toJSNumber()); + } + out.push(left.toJSNumber()); + return { value: out.reverse(), isNegative: neg }; + } + + function toBaseString(n, base) { + var arr = toBase(n, base); + return (arr.isNegative ? "-" : "") + arr.value.map(stringify).join(''); + } + + BigInteger.prototype.toArray = function (radix) { + return toBase(this, radix); + }; + + SmallInteger.prototype.toArray = function (radix) { + return toBase(this, radix); + }; + + BigInteger.prototype.toString = function (radix) { + if (radix === undefined) radix = 10; + if (radix !== 10) return toBaseString(this, radix); + var v = this.value, l = v.length, str = String(v[--l]), zeros = "0000000", digit; + while (--l >= 0) { + digit = String(v[l]); + str += zeros.slice(digit.length) + digit; + } + var sign = this.sign ? "-" : ""; + return sign + str; + }; + + SmallInteger.prototype.toString = function (radix) { + if (radix === undefined) radix = 10; + if (radix != 10) return toBaseString(this, radix); + return String(this.value); + }; + BigInteger.prototype.toJSON = SmallInteger.prototype.toJSON = function () { return this.toString(); } + + BigInteger.prototype.valueOf = function () { + return parseInt(this.toString(), 10); + }; + BigInteger.prototype.toJSNumber = BigInteger.prototype.valueOf; + + SmallInteger.prototype.valueOf = function () { + return this.value; + }; + SmallInteger.prototype.toJSNumber = SmallInteger.prototype.valueOf; + + function parseStringValue(v) { + if (isPrecise(+v)) { + var x = +v; + if (x === truncate(x)) + return new SmallInteger(x); + throw new Error("Invalid integer: " + v); + } + var sign = v[0] === "-"; + if (sign) v = v.slice(1); + var split = v.split(/e/i); + if (split.length > 2) throw new Error("Invalid integer: " + split.join("e")); + if (split.length === 2) { + var exp = split[1]; + if (exp[0] === "+") exp = exp.slice(1); + exp = +exp; + if (exp !== truncate(exp) || !isPrecise(exp)) throw new Error("Invalid integer: " + exp + " is not a valid exponent."); + var text = split[0]; + var decimalPlace = text.indexOf("."); + if (decimalPlace >= 0) { + exp -= text.length - decimalPlace - 1; + text = text.slice(0, decimalPlace) + text.slice(decimalPlace + 1); + } + if (exp < 0) throw new Error("Cannot include negative exponent part for integers"); + text += (new Array(exp + 1)).join("0"); + v = text; + } + var isValid = /^([0-9][0-9]*)$/.test(v); + if (!isValid) throw new Error("Invalid integer: " + v); + var r = [], max = v.length, l = LOG_BASE, min = max - l; + while (max > 0) { + r.push(+v.slice(min, max)); + min -= l; + if (min < 0) min = 0; + max -= l; + } + trim(r); + return new BigInteger(r, sign); + } + + function parseNumberValue(v) { + if (isPrecise(v)) { + if (v !== truncate(v)) throw new Error(v + " is not an integer."); + return new SmallInteger(v); + } + return parseStringValue(v.toString()); + } + + function parseValue(v) { + if (typeof v === "number") { + return parseNumberValue(v); + } + if (typeof v === "string") { + return parseStringValue(v); + } + return v; + } + // Pre-define numbers in range [-999,999] + for (var i = 0; i < 1000; i++) { + Integer[i] = new SmallInteger(i); + if (i > 0) Integer[-i] = new SmallInteger(-i); + } + // Backwards compatibility + Integer.one = Integer[1]; + Integer.zero = Integer[0]; + Integer.minusOne = Integer[-1]; + Integer.max = max; + Integer.min = min; + Integer.gcd = gcd; + Integer.lcm = lcm; + Integer.isInstance = function (x) { return x instanceof BigInteger || x instanceof SmallInteger; }; + Integer.randBetween = randBetween; + + Integer.fromArray = function (digits, base, isNegative) { + return parseBaseFromArray(digits.map(parseValue), parseValue(base || 10), isNegative); + }; + + return Integer; +})(); + +// Node.js check +if (typeof module !== "undefined" && module.hasOwnProperty("exports")) { + module.exports = bigInt; +} + +//amd check +if (typeof define === "function" && define.amd) { + define("big-integer", [], function () { + return bigInt; + }); +} + +},{}],61:[function(require,module,exports){ +// (public) Constructor +function BigInteger(a, b, c) { + if (!(this instanceof BigInteger)) + return new BigInteger(a, b, c) + + if (a != null) { + if ("number" == typeof a) this.fromNumber(a, b, c) + else if (b == null && "string" != typeof a) this.fromString(a, 256) + else this.fromString(a, b) + } +} + +var proto = BigInteger.prototype + +// duck-typed isBigInteger +proto.__bigi = require('../package.json').version +BigInteger.isBigInteger = function (obj, check_ver) { + return obj && obj.__bigi && (!check_ver || obj.__bigi === proto.__bigi) +} + +// Bits per digit +var dbits + +// am: Compute w_j += (x*this_i), propagate carries, +// c is initial carry, returns final carry. +// c < 3*dvalue, x < 2*dvalue, this_i < dvalue +// We need to select the fastest one that works in this environment. + +// am1: use a single mult and divide to get the high bits, +// max digit bits should be 26 because +// max internal value = 2*dvalue^2-2*dvalue (< 2^53) +function am1(i, x, w, j, c, n) { + while (--n >= 0) { + var v = x * this[i++] + w[j] + c + c = Math.floor(v / 0x4000000) + w[j++] = v & 0x3ffffff + } + return c +} +// am2 avoids a big mult-and-extract completely. +// Max digit bits should be <= 30 because we do bitwise ops +// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31) +function am2(i, x, w, j, c, n) { + var xl = x & 0x7fff, + xh = x >> 15 + while (--n >= 0) { + var l = this[i] & 0x7fff + var h = this[i++] >> 15 + var m = xh * l + h * xl + l = xl * l + ((m & 0x7fff) << 15) + w[j] + (c & 0x3fffffff) + c = (l >>> 30) + (m >>> 15) + xh * h + (c >>> 30) + w[j++] = l & 0x3fffffff + } + return c +} +// Alternately, set max digit bits to 28 since some +// browsers slow down when dealing with 32-bit numbers. +function am3(i, x, w, j, c, n) { + var xl = x & 0x3fff, + xh = x >> 14 + while (--n >= 0) { + var l = this[i] & 0x3fff + var h = this[i++] >> 14 + var m = xh * l + h * xl + l = xl * l + ((m & 0x3fff) << 14) + w[j] + c + c = (l >> 28) + (m >> 14) + xh * h + w[j++] = l & 0xfffffff + } + return c +} + +// wtf? +BigInteger.prototype.am = am1 +dbits = 26 + +BigInteger.prototype.DB = dbits +BigInteger.prototype.DM = ((1 << dbits) - 1) +var DV = BigInteger.prototype.DV = (1 << dbits) + +var BI_FP = 52 +BigInteger.prototype.FV = Math.pow(2, BI_FP) +BigInteger.prototype.F1 = BI_FP - dbits +BigInteger.prototype.F2 = 2 * dbits - BI_FP + +// Digit conversions +var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz" +var BI_RC = new Array() +var rr, vv +rr = "0".charCodeAt(0) +for (vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv +rr = "a".charCodeAt(0) +for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv +rr = "A".charCodeAt(0) +for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv + +function int2char(n) { + return BI_RM.charAt(n) +} + +function intAt(s, i) { + var c = BI_RC[s.charCodeAt(i)] + return (c == null) ? -1 : c +} + +// (protected) copy this to r +function bnpCopyTo(r) { + for (var i = this.t - 1; i >= 0; --i) r[i] = this[i] + r.t = this.t + r.s = this.s +} + +// (protected) set from integer value x, -DV <= x < DV +function bnpFromInt(x) { + this.t = 1 + this.s = (x < 0) ? -1 : 0 + if (x > 0) this[0] = x + else if (x < -1) this[0] = x + DV + else this.t = 0 +} + +// return bigint initialized to value +function nbv(i) { + var r = new BigInteger() + r.fromInt(i) + return r +} + +// (protected) set from string and radix +function bnpFromString(s, b) { + var self = this + + var k + if (b == 16) k = 4 + else if (b == 8) k = 3 + else if (b == 256) k = 8; // byte array + else if (b == 2) k = 1 + else if (b == 32) k = 5 + else if (b == 4) k = 2 + else { + self.fromRadix(s, b) + return + } + self.t = 0 + self.s = 0 + var i = s.length, + mi = false, + sh = 0 + while (--i >= 0) { + var x = (k == 8) ? s[i] & 0xff : intAt(s, i) + if (x < 0) { + if (s.charAt(i) == "-") mi = true + continue + } + mi = false + if (sh == 0) + self[self.t++] = x + else if (sh + k > self.DB) { + self[self.t - 1] |= (x & ((1 << (self.DB - sh)) - 1)) << sh + self[self.t++] = (x >> (self.DB - sh)) + } else + self[self.t - 1] |= x << sh + sh += k + if (sh >= self.DB) sh -= self.DB + } + if (k == 8 && (s[0] & 0x80) != 0) { + self.s = -1 + if (sh > 0) self[self.t - 1] |= ((1 << (self.DB - sh)) - 1) << sh + } + self.clamp() + if (mi) BigInteger.ZERO.subTo(self, self) +} + +// (protected) clamp off excess high words +function bnpClamp() { + var c = this.s & this.DM + while (this.t > 0 && this[this.t - 1] == c)--this.t +} + +// (public) return string representation in given radix +function bnToString(b) { + var self = this + if (self.s < 0) return "-" + self.negate() + .toString(b) + var k + if (b == 16) k = 4 + else if (b == 8) k = 3 + else if (b == 2) k = 1 + else if (b == 32) k = 5 + else if (b == 4) k = 2 + else return self.toRadix(b) + var km = (1 << k) - 1, + d, m = false, + r = "", + i = self.t + var p = self.DB - (i * self.DB) % k + if (i-- > 0) { + if (p < self.DB && (d = self[i] >> p) > 0) { + m = true + r = int2char(d) + } + while (i >= 0) { + if (p < k) { + d = (self[i] & ((1 << p) - 1)) << (k - p) + d |= self[--i] >> (p += self.DB - k) + } else { + d = (self[i] >> (p -= k)) & km + if (p <= 0) { + p += self.DB + --i + } + } + if (d > 0) m = true + if (m) r += int2char(d) + } + } + return m ? r : "0" +} + +// (public) -this +function bnNegate() { + var r = new BigInteger() + BigInteger.ZERO.subTo(this, r) + return r +} + +// (public) |this| +function bnAbs() { + return (this.s < 0) ? this.negate() : this +} + +// (public) return + if this > a, - if this < a, 0 if equal +function bnCompareTo(a) { + var r = this.s - a.s + if (r != 0) return r + var i = this.t + r = i - a.t + if (r != 0) return (this.s < 0) ? -r : r + while (--i >= 0) + if ((r = this[i] - a[i]) != 0) return r + return 0 +} + +// returns bit length of the integer x +function nbits(x) { + var r = 1, + t + if ((t = x >>> 16) != 0) { + x = t + r += 16 + } + if ((t = x >> 8) != 0) { + x = t + r += 8 + } + if ((t = x >> 4) != 0) { + x = t + r += 4 + } + if ((t = x >> 2) != 0) { + x = t + r += 2 + } + if ((t = x >> 1) != 0) { + x = t + r += 1 + } + return r +} + +// (public) return the number of bits in "this" +function bnBitLength() { + if (this.t <= 0) return 0 + return this.DB * (this.t - 1) + nbits(this[this.t - 1] ^ (this.s & this.DM)) +} + +// (public) return the number of bytes in "this" +function bnByteLength() { + return this.bitLength() >> 3 +} + +// (protected) r = this << n*DB +function bnpDLShiftTo(n, r) { + var i + for (i = this.t - 1; i >= 0; --i) r[i + n] = this[i] + for (i = n - 1; i >= 0; --i) r[i] = 0 + r.t = this.t + n + r.s = this.s +} + +// (protected) r = this >> n*DB +function bnpDRShiftTo(n, r) { + for (var i = n; i < this.t; ++i) r[i - n] = this[i] + r.t = Math.max(this.t - n, 0) + r.s = this.s +} + +// (protected) r = this << n +function bnpLShiftTo(n, r) { + var self = this + var bs = n % self.DB + var cbs = self.DB - bs + var bm = (1 << cbs) - 1 + var ds = Math.floor(n / self.DB), + c = (self.s << bs) & self.DM, + i + for (i = self.t - 1; i >= 0; --i) { + r[i + ds + 1] = (self[i] >> cbs) | c + c = (self[i] & bm) << bs + } + for (i = ds - 1; i >= 0; --i) r[i] = 0 + r[ds] = c + r.t = self.t + ds + 1 + r.s = self.s + r.clamp() +} + +// (protected) r = this >> n +function bnpRShiftTo(n, r) { + var self = this + r.s = self.s + var ds = Math.floor(n / self.DB) + if (ds >= self.t) { + r.t = 0 + return + } + var bs = n % self.DB + var cbs = self.DB - bs + var bm = (1 << bs) - 1 + r[0] = self[ds] >> bs + for (var i = ds + 1; i < self.t; ++i) { + r[i - ds - 1] |= (self[i] & bm) << cbs + r[i - ds] = self[i] >> bs + } + if (bs > 0) r[self.t - ds - 1] |= (self.s & bm) << cbs + r.t = self.t - ds + r.clamp() +} + +// (protected) r = this - a +function bnpSubTo(a, r) { + var self = this + var i = 0, + c = 0, + m = Math.min(a.t, self.t) + while (i < m) { + c += self[i] - a[i] + r[i++] = c & self.DM + c >>= self.DB + } + if (a.t < self.t) { + c -= a.s + while (i < self.t) { + c += self[i] + r[i++] = c & self.DM + c >>= self.DB + } + c += self.s + } else { + c += self.s + while (i < a.t) { + c -= a[i] + r[i++] = c & self.DM + c >>= self.DB + } + c -= a.s + } + r.s = (c < 0) ? -1 : 0 + if (c < -1) r[i++] = self.DV + c + else if (c > 0) r[i++] = c + r.t = i + r.clamp() +} + +// (protected) r = this * a, r != this,a (HAC 14.12) +// "this" should be the larger one if appropriate. +function bnpMultiplyTo(a, r) { + var x = this.abs(), + y = a.abs() + var i = x.t + r.t = i + y.t + while (--i >= 0) r[i] = 0 + for (i = 0; i < y.t; ++i) r[i + x.t] = x.am(0, y[i], r, i, 0, x.t) + r.s = 0 + r.clamp() + if (this.s != a.s) BigInteger.ZERO.subTo(r, r) +} + +// (protected) r = this^2, r != this (HAC 14.16) +function bnpSquareTo(r) { + var x = this.abs() + var i = r.t = 2 * x.t + while (--i >= 0) r[i] = 0 + for (i = 0; i < x.t - 1; ++i) { + var c = x.am(i, x[i], r, 2 * i, 0, 1) + if ((r[i + x.t] += x.am(i + 1, 2 * x[i], r, 2 * i + 1, c, x.t - i - 1)) >= x.DV) { + r[i + x.t] -= x.DV + r[i + x.t + 1] = 1 + } + } + if (r.t > 0) r[r.t - 1] += x.am(i, x[i], r, 2 * i, 0, 1) + r.s = 0 + r.clamp() +} + +// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20) +// r != q, this != m. q or r may be null. +function bnpDivRemTo(m, q, r) { + var self = this + var pm = m.abs() + if (pm.t <= 0) return + var pt = self.abs() + if (pt.t < pm.t) { + if (q != null) q.fromInt(0) + if (r != null) self.copyTo(r) + return + } + if (r == null) r = new BigInteger() + var y = new BigInteger(), + ts = self.s, + ms = m.s + var nsh = self.DB - nbits(pm[pm.t - 1]); // normalize modulus + if (nsh > 0) { + pm.lShiftTo(nsh, y) + pt.lShiftTo(nsh, r) + } else { + pm.copyTo(y) + pt.copyTo(r) + } + var ys = y.t + var y0 = y[ys - 1] + if (y0 == 0) return + var yt = y0 * (1 << self.F1) + ((ys > 1) ? y[ys - 2] >> self.F2 : 0) + var d1 = self.FV / yt, + d2 = (1 << self.F1) / yt, + e = 1 << self.F2 + var i = r.t, + j = i - ys, + t = (q == null) ? new BigInteger() : q + y.dlShiftTo(j, t) + if (r.compareTo(t) >= 0) { + r[r.t++] = 1 + r.subTo(t, r) + } + BigInteger.ONE.dlShiftTo(ys, t) + t.subTo(y, y); // "negative" y so we can replace sub with am later + while (y.t < ys) y[y.t++] = 0 + while (--j >= 0) { + // Estimate quotient digit + var qd = (r[--i] == y0) ? self.DM : Math.floor(r[i] * d1 + (r[i - 1] + e) * d2) + if ((r[i] += y.am(0, qd, r, j, 0, ys)) < qd) { // Try it out + y.dlShiftTo(j, t) + r.subTo(t, r) + while (r[i] < --qd) r.subTo(t, r) + } + } + if (q != null) { + r.drShiftTo(ys, q) + if (ts != ms) BigInteger.ZERO.subTo(q, q) + } + r.t = ys + r.clamp() + if (nsh > 0) r.rShiftTo(nsh, r); // Denormalize remainder + if (ts < 0) BigInteger.ZERO.subTo(r, r) +} + +// (public) this mod a +function bnMod(a) { + var r = new BigInteger() + this.abs() + .divRemTo(a, null, r) + if (this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r, r) + return r +} + +// Modular reduction using "classic" algorithm +function Classic(m) { + this.m = m +} + +function cConvert(x) { + if (x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m) + else return x +} + +function cRevert(x) { + return x +} + +function cReduce(x) { + x.divRemTo(this.m, null, x) +} + +function cMulTo(x, y, r) { + x.multiplyTo(y, r) + this.reduce(r) +} + +function cSqrTo(x, r) { + x.squareTo(r) + this.reduce(r) +} + +Classic.prototype.convert = cConvert +Classic.prototype.revert = cRevert +Classic.prototype.reduce = cReduce +Classic.prototype.mulTo = cMulTo +Classic.prototype.sqrTo = cSqrTo + +// (protected) return "-1/this % 2^DB"; useful for Mont. reduction +// justification: +// xy == 1 (mod m) +// xy = 1+km +// xy(2-xy) = (1+km)(1-km) +// x[y(2-xy)] = 1-k^2m^2 +// x[y(2-xy)] == 1 (mod m^2) +// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2 +// should reduce x and y(2-xy) by m^2 at each step to keep size bounded. +// JS multiply "overflows" differently from C/C++, so care is needed here. +function bnpInvDigit() { + if (this.t < 1) return 0 + var x = this[0] + if ((x & 1) == 0) return 0 + var y = x & 3; // y == 1/x mod 2^2 + y = (y * (2 - (x & 0xf) * y)) & 0xf; // y == 1/x mod 2^4 + y = (y * (2 - (x & 0xff) * y)) & 0xff; // y == 1/x mod 2^8 + y = (y * (2 - (((x & 0xffff) * y) & 0xffff))) & 0xffff; // y == 1/x mod 2^16 + // last step - calculate inverse mod DV directly + // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints + y = (y * (2 - x * y % this.DV)) % this.DV; // y == 1/x mod 2^dbits + // we really want the negative inverse, and -DV < y < DV + return (y > 0) ? this.DV - y : -y +} + +// Montgomery reduction +function Montgomery(m) { + this.m = m + this.mp = m.invDigit() + this.mpl = this.mp & 0x7fff + this.mph = this.mp >> 15 + this.um = (1 << (m.DB - 15)) - 1 + this.mt2 = 2 * m.t +} + +// xR mod m +function montConvert(x) { + var r = new BigInteger() + x.abs() + .dlShiftTo(this.m.t, r) + r.divRemTo(this.m, null, r) + if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r, r) + return r +} + +// x/R mod m +function montRevert(x) { + var r = new BigInteger() + x.copyTo(r) + this.reduce(r) + return r +} + +// x = x/R mod m (HAC 14.32) +function montReduce(x) { + while (x.t <= this.mt2) // pad x so am has enough room later + x[x.t++] = 0 + for (var i = 0; i < this.m.t; ++i) { + // faster way of calculating u0 = x[i]*mp mod DV + var j = x[i] & 0x7fff + var u0 = (j * this.mpl + (((j * this.mph + (x[i] >> 15) * this.mpl) & this.um) << 15)) & x.DM + // use am to combine the multiply-shift-add into one call + j = i + this.m.t + x[j] += this.m.am(0, u0, x, i, 0, this.m.t) + // propagate carry + while (x[j] >= x.DV) { + x[j] -= x.DV + x[++j]++ + } + } + x.clamp() + x.drShiftTo(this.m.t, x) + if (x.compareTo(this.m) >= 0) x.subTo(this.m, x) +} + +// r = "x^2/R mod m"; x != r +function montSqrTo(x, r) { + x.squareTo(r) + this.reduce(r) +} + +// r = "xy/R mod m"; x,y != r +function montMulTo(x, y, r) { + x.multiplyTo(y, r) + this.reduce(r) +} + +Montgomery.prototype.convert = montConvert +Montgomery.prototype.revert = montRevert +Montgomery.prototype.reduce = montReduce +Montgomery.prototype.mulTo = montMulTo +Montgomery.prototype.sqrTo = montSqrTo + +// (protected) true iff this is even +function bnpIsEven() { + return ((this.t > 0) ? (this[0] & 1) : this.s) == 0 +} + +// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79) +function bnpExp(e, z) { + if (e > 0xffffffff || e < 1) return BigInteger.ONE + var r = new BigInteger(), + r2 = new BigInteger(), + g = z.convert(this), + i = nbits(e) - 1 + g.copyTo(r) + while (--i >= 0) { + z.sqrTo(r, r2) + if ((e & (1 << i)) > 0) z.mulTo(r2, g, r) + else { + var t = r + r = r2 + r2 = t + } + } + return z.revert(r) +} + +// (public) this^e % m, 0 <= e < 2^32 +function bnModPowInt(e, m) { + var z + if (e < 256 || m.isEven()) z = new Classic(m) + else z = new Montgomery(m) + return this.exp(e, z) +} + +// protected +proto.copyTo = bnpCopyTo +proto.fromInt = bnpFromInt +proto.fromString = bnpFromString +proto.clamp = bnpClamp +proto.dlShiftTo = bnpDLShiftTo +proto.drShiftTo = bnpDRShiftTo +proto.lShiftTo = bnpLShiftTo +proto.rShiftTo = bnpRShiftTo +proto.subTo = bnpSubTo +proto.multiplyTo = bnpMultiplyTo +proto.squareTo = bnpSquareTo +proto.divRemTo = bnpDivRemTo +proto.invDigit = bnpInvDigit +proto.isEven = bnpIsEven +proto.exp = bnpExp + +// public +proto.toString = bnToString +proto.negate = bnNegate +proto.abs = bnAbs +proto.compareTo = bnCompareTo +proto.bitLength = bnBitLength +proto.byteLength = bnByteLength +proto.mod = bnMod +proto.modPowInt = bnModPowInt + +// (public) +function bnClone() { + var r = new BigInteger() + this.copyTo(r) + return r +} + +// (public) return value as integer +function bnIntValue() { + if (this.s < 0) { + if (this.t == 1) return this[0] - this.DV + else if (this.t == 0) return -1 + } else if (this.t == 1) return this[0] + else if (this.t == 0) return 0 + // assumes 16 < DB < 32 + return ((this[1] & ((1 << (32 - this.DB)) - 1)) << this.DB) | this[0] +} + +// (public) return value as byte +function bnByteValue() { + return (this.t == 0) ? this.s : (this[0] << 24) >> 24 +} + +// (public) return value as short (assumes DB>=16) +function bnShortValue() { + return (this.t == 0) ? this.s : (this[0] << 16) >> 16 +} + +// (protected) return x s.t. r^x < DV +function bnpChunkSize(r) { + return Math.floor(Math.LN2 * this.DB / Math.log(r)) +} + +// (public) 0 if this == 0, 1 if this > 0 +function bnSigNum() { + if (this.s < 0) return -1 + else if (this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0 + else return 1 +} + +// (protected) convert to radix string +function bnpToRadix(b) { + if (b == null) b = 10 + if (this.signum() == 0 || b < 2 || b > 36) return "0" + var cs = this.chunkSize(b) + var a = Math.pow(b, cs) + var d = nbv(a), + y = new BigInteger(), + z = new BigInteger(), + r = "" + this.divRemTo(d, y, z) + while (y.signum() > 0) { + r = (a + z.intValue()) + .toString(b) + .substr(1) + r + y.divRemTo(d, y, z) + } + return z.intValue() + .toString(b) + r +} + +// (protected) convert from radix string +function bnpFromRadix(s, b) { + var self = this + self.fromInt(0) + if (b == null) b = 10 + var cs = self.chunkSize(b) + var d = Math.pow(b, cs), + mi = false, + j = 0, + w = 0 + for (var i = 0; i < s.length; ++i) { + var x = intAt(s, i) + if (x < 0) { + if (s.charAt(i) == "-" && self.signum() == 0) mi = true + continue + } + w = b * w + x + if (++j >= cs) { + self.dMultiply(d) + self.dAddOffset(w, 0) + j = 0 + w = 0 + } + } + if (j > 0) { + self.dMultiply(Math.pow(b, j)) + self.dAddOffset(w, 0) + } + if (mi) BigInteger.ZERO.subTo(self, self) +} + +// (protected) alternate constructor +function bnpFromNumber(a, b, c) { + var self = this + if ("number" == typeof b) { + // new BigInteger(int,int,RNG) + if (a < 2) self.fromInt(1) + else { + self.fromNumber(a, c) + if (!self.testBit(a - 1)) // force MSB set + self.bitwiseTo(BigInteger.ONE.shiftLeft(a - 1), op_or, self) + if (self.isEven()) self.dAddOffset(1, 0); // force odd + while (!self.isProbablePrime(b)) { + self.dAddOffset(2, 0) + if (self.bitLength() > a) self.subTo(BigInteger.ONE.shiftLeft(a - 1), self) + } + } + } else { + // new BigInteger(int,RNG) + var x = new Array(), + t = a & 7 + x.length = (a >> 3) + 1 + b.nextBytes(x) + if (t > 0) x[0] &= ((1 << t) - 1) + else x[0] = 0 + self.fromString(x, 256) + } +} + +// (public) convert to bigendian byte array +function bnToByteArray() { + var self = this + var i = self.t, + r = new Array() + r[0] = self.s + var p = self.DB - (i * self.DB) % 8, + d, k = 0 + if (i-- > 0) { + if (p < self.DB && (d = self[i] >> p) != (self.s & self.DM) >> p) + r[k++] = d | (self.s << (self.DB - p)) + while (i >= 0) { + if (p < 8) { + d = (self[i] & ((1 << p) - 1)) << (8 - p) + d |= self[--i] >> (p += self.DB - 8) + } else { + d = (self[i] >> (p -= 8)) & 0xff + if (p <= 0) { + p += self.DB + --i + } + } + if ((d & 0x80) != 0) d |= -256 + if (k === 0 && (self.s & 0x80) != (d & 0x80))++k + if (k > 0 || d != self.s) r[k++] = d + } + } + return r +} + +function bnEquals(a) { + return (this.compareTo(a) == 0) +} + +function bnMin(a) { + return (this.compareTo(a) < 0) ? this : a +} + +function bnMax(a) { + return (this.compareTo(a) > 0) ? this : a +} + +// (protected) r = this op a (bitwise) +function bnpBitwiseTo(a, op, r) { + var self = this + var i, f, m = Math.min(a.t, self.t) + for (i = 0; i < m; ++i) r[i] = op(self[i], a[i]) + if (a.t < self.t) { + f = a.s & self.DM + for (i = m; i < self.t; ++i) r[i] = op(self[i], f) + r.t = self.t + } else { + f = self.s & self.DM + for (i = m; i < a.t; ++i) r[i] = op(f, a[i]) + r.t = a.t + } + r.s = op(self.s, a.s) + r.clamp() +} + +// (public) this & a +function op_and(x, y) { + return x & y +} + +function bnAnd(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_and, r) + return r +} + +// (public) this | a +function op_or(x, y) { + return x | y +} + +function bnOr(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_or, r) + return r +} + +// (public) this ^ a +function op_xor(x, y) { + return x ^ y +} + +function bnXor(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_xor, r) + return r +} + +// (public) this & ~a +function op_andnot(x, y) { + return x & ~y +} + +function bnAndNot(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_andnot, r) + return r +} + +// (public) ~this +function bnNot() { + var r = new BigInteger() + for (var i = 0; i < this.t; ++i) r[i] = this.DM & ~this[i] + r.t = this.t + r.s = ~this.s + return r +} + +// (public) this << n +function bnShiftLeft(n) { + var r = new BigInteger() + if (n < 0) this.rShiftTo(-n, r) + else this.lShiftTo(n, r) + return r +} + +// (public) this >> n +function bnShiftRight(n) { + var r = new BigInteger() + if (n < 0) this.lShiftTo(-n, r) + else this.rShiftTo(n, r) + return r +} + +// return index of lowest 1-bit in x, x < 2^31 +function lbit(x) { + if (x == 0) return -1 + var r = 0 + if ((x & 0xffff) == 0) { + x >>= 16 + r += 16 + } + if ((x & 0xff) == 0) { + x >>= 8 + r += 8 + } + if ((x & 0xf) == 0) { + x >>= 4 + r += 4 + } + if ((x & 3) == 0) { + x >>= 2 + r += 2 + } + if ((x & 1) == 0)++r + return r +} + +// (public) returns index of lowest 1-bit (or -1 if none) +function bnGetLowestSetBit() { + for (var i = 0; i < this.t; ++i) + if (this[i] != 0) return i * this.DB + lbit(this[i]) + if (this.s < 0) return this.t * this.DB + return -1 +} + +// return number of 1 bits in x +function cbit(x) { + var r = 0 + while (x != 0) { + x &= x - 1 + ++r + } + return r +} + +// (public) return number of set bits +function bnBitCount() { + var r = 0, + x = this.s & this.DM + for (var i = 0; i < this.t; ++i) r += cbit(this[i] ^ x) + return r +} + +// (public) true iff nth bit is set +function bnTestBit(n) { + var j = Math.floor(n / this.DB) + if (j >= this.t) return (this.s != 0) + return ((this[j] & (1 << (n % this.DB))) != 0) +} + +// (protected) this op (1<>= self.DB + } + if (a.t < self.t) { + c += a.s + while (i < self.t) { + c += self[i] + r[i++] = c & self.DM + c >>= self.DB + } + c += self.s + } else { + c += self.s + while (i < a.t) { + c += a[i] + r[i++] = c & self.DM + c >>= self.DB + } + c += a.s + } + r.s = (c < 0) ? -1 : 0 + if (c > 0) r[i++] = c + else if (c < -1) r[i++] = self.DV + c + r.t = i + r.clamp() +} + +// (public) this + a +function bnAdd(a) { + var r = new BigInteger() + this.addTo(a, r) + return r +} + +// (public) this - a +function bnSubtract(a) { + var r = new BigInteger() + this.subTo(a, r) + return r +} + +// (public) this * a +function bnMultiply(a) { + var r = new BigInteger() + this.multiplyTo(a, r) + return r +} + +// (public) this^2 +function bnSquare() { + var r = new BigInteger() + this.squareTo(r) + return r +} + +// (public) this / a +function bnDivide(a) { + var r = new BigInteger() + this.divRemTo(a, r, null) + return r +} + +// (public) this % a +function bnRemainder(a) { + var r = new BigInteger() + this.divRemTo(a, null, r) + return r +} + +// (public) [this/a,this%a] +function bnDivideAndRemainder(a) { + var q = new BigInteger(), + r = new BigInteger() + this.divRemTo(a, q, r) + return new Array(q, r) +} + +// (protected) this *= n, this >= 0, 1 < n < DV +function bnpDMultiply(n) { + this[this.t] = this.am(0, n - 1, this, 0, 0, this.t) + ++this.t + this.clamp() +} + +// (protected) this += n << w words, this >= 0 +function bnpDAddOffset(n, w) { + if (n == 0) return + while (this.t <= w) this[this.t++] = 0 + this[w] += n + while (this[w] >= this.DV) { + this[w] -= this.DV + if (++w >= this.t) this[this.t++] = 0 + ++this[w] + } +} + +// A "null" reducer +function NullExp() {} + +function nNop(x) { + return x +} + +function nMulTo(x, y, r) { + x.multiplyTo(y, r) +} + +function nSqrTo(x, r) { + x.squareTo(r) +} + +NullExp.prototype.convert = nNop +NullExp.prototype.revert = nNop +NullExp.prototype.mulTo = nMulTo +NullExp.prototype.sqrTo = nSqrTo + +// (public) this^e +function bnPow(e) { + return this.exp(e, new NullExp()) +} + +// (protected) r = lower n words of "this * a", a.t <= n +// "this" should be the larger one if appropriate. +function bnpMultiplyLowerTo(a, n, r) { + var i = Math.min(this.t + a.t, n) + r.s = 0; // assumes a,this >= 0 + r.t = i + while (i > 0) r[--i] = 0 + var j + for (j = r.t - this.t; i < j; ++i) r[i + this.t] = this.am(0, a[i], r, i, 0, this.t) + for (j = Math.min(a.t, n); i < j; ++i) this.am(0, a[i], r, i, 0, n - i) + r.clamp() +} + +// (protected) r = "this * a" without lower n words, n > 0 +// "this" should be the larger one if appropriate. +function bnpMultiplyUpperTo(a, n, r) { + --n + var i = r.t = this.t + a.t - n + r.s = 0; // assumes a,this >= 0 + while (--i >= 0) r[i] = 0 + for (i = Math.max(n - this.t, 0); i < a.t; ++i) + r[this.t + i - n] = this.am(n - i, a[i], r, 0, 0, this.t + i - n) + r.clamp() + r.drShiftTo(1, r) +} + +// Barrett modular reduction +function Barrett(m) { + // setup Barrett + this.r2 = new BigInteger() + this.q3 = new BigInteger() + BigInteger.ONE.dlShiftTo(2 * m.t, this.r2) + this.mu = this.r2.divide(m) + this.m = m +} + +function barrettConvert(x) { + if (x.s < 0 || x.t > 2 * this.m.t) return x.mod(this.m) + else if (x.compareTo(this.m) < 0) return x + else { + var r = new BigInteger() + x.copyTo(r) + this.reduce(r) + return r + } +} + +function barrettRevert(x) { + return x +} + +// x = x mod m (HAC 14.42) +function barrettReduce(x) { + var self = this + x.drShiftTo(self.m.t - 1, self.r2) + if (x.t > self.m.t + 1) { + x.t = self.m.t + 1 + x.clamp() + } + self.mu.multiplyUpperTo(self.r2, self.m.t + 1, self.q3) + self.m.multiplyLowerTo(self.q3, self.m.t + 1, self.r2) + while (x.compareTo(self.r2) < 0) x.dAddOffset(1, self.m.t + 1) + x.subTo(self.r2, x) + while (x.compareTo(self.m) >= 0) x.subTo(self.m, x) +} + +// r = x^2 mod m; x != r +function barrettSqrTo(x, r) { + x.squareTo(r) + this.reduce(r) +} + +// r = x*y mod m; x,y != r +function barrettMulTo(x, y, r) { + x.multiplyTo(y, r) + this.reduce(r) +} + +Barrett.prototype.convert = barrettConvert +Barrett.prototype.revert = barrettRevert +Barrett.prototype.reduce = barrettReduce +Barrett.prototype.mulTo = barrettMulTo +Barrett.prototype.sqrTo = barrettSqrTo + +// (public) this^e % m (HAC 14.85) +function bnModPow(e, m) { + var i = e.bitLength(), + k, r = nbv(1), + z + if (i <= 0) return r + else if (i < 18) k = 1 + else if (i < 48) k = 3 + else if (i < 144) k = 4 + else if (i < 768) k = 5 + else k = 6 + if (i < 8) + z = new Classic(m) + else if (m.isEven()) + z = new Barrett(m) + else + z = new Montgomery(m) + + // precomputation + var g = new Array(), + n = 3, + k1 = k - 1, + km = (1 << k) - 1 + g[1] = z.convert(this) + if (k > 1) { + var g2 = new BigInteger() + z.sqrTo(g[1], g2) + while (n <= km) { + g[n] = new BigInteger() + z.mulTo(g2, g[n - 2], g[n]) + n += 2 + } + } + + var j = e.t - 1, + w, is1 = true, + r2 = new BigInteger(), + t + i = nbits(e[j]) - 1 + while (j >= 0) { + if (i >= k1) w = (e[j] >> (i - k1)) & km + else { + w = (e[j] & ((1 << (i + 1)) - 1)) << (k1 - i) + if (j > 0) w |= e[j - 1] >> (this.DB + i - k1) + } + + n = k + while ((w & 1) == 0) { + w >>= 1 + --n + } + if ((i -= n) < 0) { + i += this.DB + --j + } + if (is1) { // ret == 1, don't bother squaring or multiplying it + g[w].copyTo(r) + is1 = false + } else { + while (n > 1) { + z.sqrTo(r, r2) + z.sqrTo(r2, r) + n -= 2 + } + if (n > 0) z.sqrTo(r, r2) + else { + t = r + r = r2 + r2 = t + } + z.mulTo(r2, g[w], r) + } + + while (j >= 0 && (e[j] & (1 << i)) == 0) { + z.sqrTo(r, r2) + t = r + r = r2 + r2 = t + if (--i < 0) { + i = this.DB - 1 + --j + } + } + } + return z.revert(r) +} + +// (public) gcd(this,a) (HAC 14.54) +function bnGCD(a) { + var x = (this.s < 0) ? this.negate() : this.clone() + var y = (a.s < 0) ? a.negate() : a.clone() + if (x.compareTo(y) < 0) { + var t = x + x = y + y = t + } + var i = x.getLowestSetBit(), + g = y.getLowestSetBit() + if (g < 0) return x + if (i < g) g = i + if (g > 0) { + x.rShiftTo(g, x) + y.rShiftTo(g, y) + } + while (x.signum() > 0) { + if ((i = x.getLowestSetBit()) > 0) x.rShiftTo(i, x) + if ((i = y.getLowestSetBit()) > 0) y.rShiftTo(i, y) + if (x.compareTo(y) >= 0) { + x.subTo(y, x) + x.rShiftTo(1, x) + } else { + y.subTo(x, y) + y.rShiftTo(1, y) + } + } + if (g > 0) y.lShiftTo(g, y) + return y +} + +// (protected) this % n, n < 2^26 +function bnpModInt(n) { + if (n <= 0) return 0 + var d = this.DV % n, + r = (this.s < 0) ? n - 1 : 0 + if (this.t > 0) + if (d == 0) r = this[0] % n + else + for (var i = this.t - 1; i >= 0; --i) r = (d * r + this[i]) % n + return r +} + +// (public) 1/this % m (HAC 14.61) +function bnModInverse(m) { + var ac = m.isEven() + if (this.signum() === 0) throw new Error('division by zero') + if ((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO + var u = m.clone(), + v = this.clone() + var a = nbv(1), + b = nbv(0), + c = nbv(0), + d = nbv(1) + while (u.signum() != 0) { + while (u.isEven()) { + u.rShiftTo(1, u) + if (ac) { + if (!a.isEven() || !b.isEven()) { + a.addTo(this, a) + b.subTo(m, b) + } + a.rShiftTo(1, a) + } else if (!b.isEven()) b.subTo(m, b) + b.rShiftTo(1, b) + } + while (v.isEven()) { + v.rShiftTo(1, v) + if (ac) { + if (!c.isEven() || !d.isEven()) { + c.addTo(this, c) + d.subTo(m, d) + } + c.rShiftTo(1, c) + } else if (!d.isEven()) d.subTo(m, d) + d.rShiftTo(1, d) + } + if (u.compareTo(v) >= 0) { + u.subTo(v, u) + if (ac) a.subTo(c, a) + b.subTo(d, b) + } else { + v.subTo(u, v) + if (ac) c.subTo(a, c) + d.subTo(b, d) + } + } + if (v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO + while (d.compareTo(m) >= 0) d.subTo(m, d) + while (d.signum() < 0) d.addTo(m, d) + return d +} + +var lowprimes = [ + 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, + 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, + 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, + 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, + 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, + 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, + 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, + 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, + 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, + 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, + 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997 +] + +var lplim = (1 << 26) / lowprimes[lowprimes.length - 1] + +// (public) test primality with certainty >= 1-.5^t +function bnIsProbablePrime(t) { + var i, x = this.abs() + if (x.t == 1 && x[0] <= lowprimes[lowprimes.length - 1]) { + for (i = 0; i < lowprimes.length; ++i) + if (x[0] == lowprimes[i]) return true + return false + } + if (x.isEven()) return false + i = 1 + while (i < lowprimes.length) { + var m = lowprimes[i], + j = i + 1 + while (j < lowprimes.length && m < lplim) m *= lowprimes[j++] + m = x.modInt(m) + while (i < j) if (m % lowprimes[i++] == 0) return false + } + return x.millerRabin(t) +} + +// (protected) true if probably prime (HAC 4.24, Miller-Rabin) +function bnpMillerRabin(t) { + var n1 = this.subtract(BigInteger.ONE) + var k = n1.getLowestSetBit() + if (k <= 0) return false + var r = n1.shiftRight(k) + t = (t + 1) >> 1 + if (t > lowprimes.length) t = lowprimes.length + var a = new BigInteger(null) + var j, bases = [] + for (var i = 0; i < t; ++i) { + for (;;) { + j = lowprimes[Math.floor(Math.random() * lowprimes.length)] + if (bases.indexOf(j) == -1) break + } + bases.push(j) + a.fromInt(j) + var y = a.modPow(r, this) + if (y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) { + var j = 1 + while (j++ < k && y.compareTo(n1) != 0) { + y = y.modPowInt(2, this) + if (y.compareTo(BigInteger.ONE) == 0) return false + } + if (y.compareTo(n1) != 0) return false + } + } + return true +} + +// protected +proto.chunkSize = bnpChunkSize +proto.toRadix = bnpToRadix +proto.fromRadix = bnpFromRadix +proto.fromNumber = bnpFromNumber +proto.bitwiseTo = bnpBitwiseTo +proto.changeBit = bnpChangeBit +proto.addTo = bnpAddTo +proto.dMultiply = bnpDMultiply +proto.dAddOffset = bnpDAddOffset +proto.multiplyLowerTo = bnpMultiplyLowerTo +proto.multiplyUpperTo = bnpMultiplyUpperTo +proto.modInt = bnpModInt +proto.millerRabin = bnpMillerRabin + +// public +proto.clone = bnClone +proto.intValue = bnIntValue +proto.byteValue = bnByteValue +proto.shortValue = bnShortValue +proto.signum = bnSigNum +proto.toByteArray = bnToByteArray +proto.equals = bnEquals +proto.min = bnMin +proto.max = bnMax +proto.and = bnAnd +proto.or = bnOr +proto.xor = bnXor +proto.andNot = bnAndNot +proto.not = bnNot +proto.shiftLeft = bnShiftLeft +proto.shiftRight = bnShiftRight +proto.getLowestSetBit = bnGetLowestSetBit +proto.bitCount = bnBitCount +proto.testBit = bnTestBit +proto.setBit = bnSetBit +proto.clearBit = bnClearBit +proto.flipBit = bnFlipBit +proto.add = bnAdd +proto.subtract = bnSubtract +proto.multiply = bnMultiply +proto.divide = bnDivide +proto.remainder = bnRemainder +proto.divideAndRemainder = bnDivideAndRemainder +proto.modPow = bnModPow +proto.modInverse = bnModInverse +proto.pow = bnPow +proto.gcd = bnGCD +proto.isProbablePrime = bnIsProbablePrime + +// JSBN-specific extension +proto.square = bnSquare + +// constants +BigInteger.ZERO = nbv(0) +BigInteger.ONE = nbv(1) +BigInteger.valueOf = nbv + +module.exports = BigInteger + +},{"../package.json":64}],62:[function(require,module,exports){ +(function (Buffer){ +// FIXME: Kind of a weird way to throw exceptions, consider removing +var assert = require('assert') +var BigInteger = require('./bigi') + +/** + * Turns a byte array into a big integer. + * + * This function will interpret a byte array as a big integer in big + * endian notation. + */ +BigInteger.fromByteArrayUnsigned = function(byteArray) { + // BigInteger expects a DER integer conformant byte array + if (byteArray[0] & 0x80) { + return new BigInteger([0].concat(byteArray)) + } + + return new BigInteger(byteArray) +} + +/** + * Returns a byte array representation of the big integer. + * + * This returns the absolute of the contained value in big endian + * form. A value of zero results in an empty array. + */ +BigInteger.prototype.toByteArrayUnsigned = function() { + var byteArray = this.toByteArray() + return byteArray[0] === 0 ? byteArray.slice(1) : byteArray +} + +BigInteger.fromDERInteger = function(byteArray) { + return new BigInteger(byteArray) +} + +/* + * Converts BigInteger to a DER integer representation. + * + * The format for this value uses the most significant bit as a sign + * bit. If the most significant bit is already set and the integer is + * positive, a 0x00 is prepended. + * + * Examples: + * + * 0 => 0x00 + * 1 => 0x01 + * -1 => 0xff + * 127 => 0x7f + * -127 => 0x81 + * 128 => 0x0080 + * -128 => 0x80 + * 255 => 0x00ff + * -255 => 0xff01 + * 16300 => 0x3fac + * -16300 => 0xc054 + * 62300 => 0x00f35c + * -62300 => 0xff0ca4 +*/ +BigInteger.prototype.toDERInteger = BigInteger.prototype.toByteArray + +BigInteger.fromBuffer = function(buffer) { + // BigInteger expects a DER integer conformant byte array + if (buffer[0] & 0x80) { + var byteArray = Array.prototype.slice.call(buffer) + + return new BigInteger([0].concat(byteArray)) + } + + return new BigInteger(buffer) +} + +BigInteger.fromHex = function(hex) { + if (hex === '') return BigInteger.ZERO + + assert.equal(hex, hex.match(/^[A-Fa-f0-9]+/), 'Invalid hex string') + assert.equal(hex.length % 2, 0, 'Incomplete hex') + return new BigInteger(hex, 16) +} + +BigInteger.prototype.toBuffer = function(size) { + var byteArray = this.toByteArrayUnsigned() + var zeros = [] + + var padding = size - byteArray.length + while (zeros.length < padding) zeros.push(0) + + return new Buffer(zeros.concat(byteArray)) +} + +BigInteger.prototype.toHex = function(size) { + return this.toBuffer(size).toString('hex') +} + +}).call(this,require("buffer").Buffer) +},{"./bigi":61,"assert":26,"buffer":146}],63:[function(require,module,exports){ +var BigInteger = require('./bigi') + +//addons +require('./convert') + +module.exports = BigInteger +},{"./bigi":61,"./convert":62}],64:[function(require,module,exports){ +module.exports={ + "_from": "bigi@^1.2.0", + "_id": "bigi@1.4.2", + "_inBundle": false, + "_integrity": "sha1-nGZalfiLiwj8Bc/XMfVhhZ1yWCU=", + "_location": "/bigi", + "_phantomChildren": {}, + "_requested": { + "type": "range", + "registry": true, + "raw": "bigi@^1.2.0", + "name": "bigi", + "escapedName": "bigi", + "rawSpec": "^1.2.0", + "saveSpec": null, + "fetchSpec": "^1.2.0" + }, + "_requiredBy": [ + "/bip38", + "/bitcoinjs-lib", + "/ecurve" + ], + "_resolved": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz", + "_shasum": "9c665a95f88b8b08fc05cfd731f561859d725825", + "_spec": "bigi@^1.2.0", + "_where": "/home/ian/git/bitcoin/bip39/libs/combined/node_modules/bip38", + "bugs": { + "url": "https://github.com/cryptocoinjs/bigi/issues" + }, + "bundleDependencies": false, + "dependencies": {}, + "deprecated": false, + "description": "Big integers.", + "devDependencies": { + "coveralls": "^2.11.2", + "istanbul": "^0.3.5", + "jshint": "^2.5.1", + "mocha": "^2.1.0", + "mochify": "^2.1.0" + }, + "homepage": "https://github.com/cryptocoinjs/bigi#readme", + "keywords": [ + "cryptography", + "math", + "bitcoin", + "arbitrary", + "precision", + "arithmetic", + "big", + "integer", + "int", + "number", + "biginteger", + "bigint", + "bignumber", + "decimal", + "float" + ], + "main": "./lib/index.js", + "name": "bigi", + "repository": { + "url": "git+https://github.com/cryptocoinjs/bigi.git", + "type": "git" + }, + "scripts": { + "browser-test": "mochify --wd -R spec", + "coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter list test/*.js", + "coveralls": "npm run-script coverage && node ./node_modules/.bin/coveralls < coverage/lcov.info", + "jshint": "jshint --config jshint.json lib/*.js ; true", + "test": "_mocha -- test/*.js", + "unit": "mocha" + }, + "testling": { + "files": "test/*.js", + "harness": "mocha", + "browsers": [ + "ie/9..latest", + "firefox/latest", + "chrome/latest", + "safari/6.0..latest", + "iphone/6.0..latest", + "android-browser/4.2..latest" + ] + }, + "version": "1.4.2" +} + +},{}],65:[function(require,module,exports){ +/*! bignumber.js v5.0.0 https://github.com/MikeMcl/bignumber.js/LICENCE */ + +;(function (globalObj) { + 'use strict'; + + /* + bignumber.js v5.0.0 + A JavaScript library for arbitrary-precision arithmetic. + https://github.com/MikeMcl/bignumber.js + Copyright (c) 2017 Michael Mclaughlin + MIT Expat Licence + */ + + + var BigNumber, + isNumeric = /^-?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i, + mathceil = Math.ceil, + mathfloor = Math.floor, + notBool = ' not a boolean or binary digit', + roundingMode = 'rounding mode', + tooManyDigits = 'number type has more than 15 significant digits', + ALPHABET = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_', + BASE = 1e14, + LOG_BASE = 14, + MAX_SAFE_INTEGER = 0x1fffffffffffff, // 2^53 - 1 + // MAX_INT32 = 0x7fffffff, // 2^31 - 1 + POWS_TEN = [1, 10, 100, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, 1e10, 1e11, 1e12, 1e13], + SQRT_BASE = 1e7, + + /* + * The limit on the value of DECIMAL_PLACES, TO_EXP_NEG, TO_EXP_POS, MIN_EXP, MAX_EXP, and + * the arguments to toExponential, toFixed, toFormat, and toPrecision, beyond which an + * exception is thrown (if ERRORS is true). + */ + MAX = 1E9; // 0 to MAX_INT32 + + + /* + * Create and return a BigNumber constructor. + */ + function constructorFactory(config) { + var div, parseNumeric, + + // id tracks the caller function, so its name can be included in error messages. + id = 0, + P = BigNumber.prototype, + ONE = new BigNumber(1), + + + /********************************* EDITABLE DEFAULTS **********************************/ + + + /* + * The default values below must be integers within the inclusive ranges stated. + * The values can also be changed at run-time using BigNumber.config. + */ + + // The maximum number of decimal places for operations involving division. + DECIMAL_PLACES = 20, // 0 to MAX + + /* + * The rounding mode used when rounding to the above decimal places, and when using + * toExponential, toFixed, toFormat and toPrecision, and round (default value). + * UP 0 Away from zero. + * DOWN 1 Towards zero. + * CEIL 2 Towards +Infinity. + * FLOOR 3 Towards -Infinity. + * HALF_UP 4 Towards nearest neighbour. If equidistant, up. + * HALF_DOWN 5 Towards nearest neighbour. If equidistant, down. + * HALF_EVEN 6 Towards nearest neighbour. If equidistant, towards even neighbour. + * HALF_CEIL 7 Towards nearest neighbour. If equidistant, towards +Infinity. + * HALF_FLOOR 8 Towards nearest neighbour. If equidistant, towards -Infinity. + */ + ROUNDING_MODE = 4, // 0 to 8 + + // EXPONENTIAL_AT : [TO_EXP_NEG , TO_EXP_POS] + + // The exponent value at and beneath which toString returns exponential notation. + // Number type: -7 + TO_EXP_NEG = -7, // 0 to -MAX + + // The exponent value at and above which toString returns exponential notation. + // Number type: 21 + TO_EXP_POS = 21, // 0 to MAX + + // RANGE : [MIN_EXP, MAX_EXP] + + // The minimum exponent value, beneath which underflow to zero occurs. + // Number type: -324 (5e-324) + MIN_EXP = -1e7, // -1 to -MAX + + // The maximum exponent value, above which overflow to Infinity occurs. + // Number type: 308 (1.7976931348623157e+308) + // For MAX_EXP > 1e7, e.g. new BigNumber('1e100000000').plus(1) may be slow. + MAX_EXP = 1e7, // 1 to MAX + + // Whether BigNumber Errors are ever thrown. + ERRORS = true, // true or false + + // Change to intValidatorNoErrors if ERRORS is false. + isValidInt = intValidatorWithErrors, // intValidatorWithErrors/intValidatorNoErrors + + // Whether to use cryptographically-secure random number generation, if available. + CRYPTO = false, // true or false + + /* + * The modulo mode used when calculating the modulus: a mod n. + * The quotient (q = a / n) is calculated according to the corresponding rounding mode. + * The remainder (r) is calculated as: r = a - n * q. + * + * UP 0 The remainder is positive if the dividend is negative, else is negative. + * DOWN 1 The remainder has the same sign as the dividend. + * This modulo mode is commonly known as 'truncated division' and is + * equivalent to (a % n) in JavaScript. + * FLOOR 3 The remainder has the same sign as the divisor (Python %). + * HALF_EVEN 6 This modulo mode implements the IEEE 754 remainder function. + * EUCLID 9 Euclidian division. q = sign(n) * floor(a / abs(n)). + * The remainder is always positive. + * + * The truncated division, floored division, Euclidian division and IEEE 754 remainder + * modes are commonly used for the modulus operation. + * Although the other rounding modes can also be used, they may not give useful results. + */ + MODULO_MODE = 1, // 0 to 9 + + // The maximum number of significant digits of the result of the toPower operation. + // If POW_PRECISION is 0, there will be unlimited significant digits. + POW_PRECISION = 0, // 0 to MAX + + // The format specification used by the BigNumber.prototype.toFormat method. + FORMAT = { + decimalSeparator: '.', + groupSeparator: ',', + groupSize: 3, + secondaryGroupSize: 0, + fractionGroupSeparator: '\xA0', // non-breaking space + fractionGroupSize: 0 + }; + + + /******************************************************************************************/ + + + // CONSTRUCTOR + + + /* + * The BigNumber constructor and exported function. + * Create and return a new instance of a BigNumber object. + * + * n {number|string|BigNumber} A numeric value. + * [b] {number} The base of n. Integer, 2 to 64 inclusive. + */ + function BigNumber( n, b ) { + var c, e, i, num, len, str, + x = this; + + // Enable constructor usage without new. + if ( !( x instanceof BigNumber ) ) { + + // 'BigNumber() constructor call without new: {n}' + // See GitHub issue: #81. + //if (ERRORS) raise( 26, 'constructor call without new', n ); + return new BigNumber( n, b ); + } + + // 'new BigNumber() base not an integer: {b}' + // 'new BigNumber() base out of range: {b}' + if ( b == null || !isValidInt( b, 2, 64, id, 'base' ) ) { + + // Duplicate. + if ( n instanceof BigNumber ) { + x.s = n.s; + x.e = n.e; + x.c = ( n = n.c ) ? n.slice() : n; + id = 0; + return; + } + + if ( ( num = typeof n == 'number' ) && n * 0 == 0 ) { + x.s = 1 / n < 0 ? ( n = -n, -1 ) : 1; + + // Fast path for integers. + if ( n === ~~n ) { + for ( e = 0, i = n; i >= 10; i /= 10, e++ ); + x.e = e; + x.c = [n]; + id = 0; + return; + } + + str = n + ''; + } else { + if ( !isNumeric.test( str = n + '' ) ) return parseNumeric( x, str, num ); + x.s = str.charCodeAt(0) === 45 ? ( str = str.slice(1), -1 ) : 1; + } + } else { + b = b | 0; + str = n + ''; + + // Ensure return value is rounded to DECIMAL_PLACES as with other bases. + // Allow exponential notation to be used with base 10 argument. + if ( b == 10 ) { + x = new BigNumber( n instanceof BigNumber ? n : str ); + return round( x, DECIMAL_PLACES + x.e + 1, ROUNDING_MODE ); + } + + // Avoid potential interpretation of Infinity and NaN as base 44+ values. + // Any number in exponential form will fail due to the [Ee][+-]. + if ( ( num = typeof n == 'number' ) && n * 0 != 0 || + !( new RegExp( '^-?' + ( c = '[' + ALPHABET.slice( 0, b ) + ']+' ) + + '(?:\\.' + c + ')?$',b < 37 ? 'i' : '' ) ).test(str) ) { + return parseNumeric( x, str, num, b ); + } + + if (num) { + x.s = 1 / n < 0 ? ( str = str.slice(1), -1 ) : 1; + + if ( ERRORS && str.replace( /^0\.0*|\./, '' ).length > 15 ) { + + // 'new BigNumber() number type has more than 15 significant digits: {n}' + raise( id, tooManyDigits, n ); + } + + // Prevent later check for length on converted number. + num = false; + } else { + x.s = str.charCodeAt(0) === 45 ? ( str = str.slice(1), -1 ) : 1; + } + + str = convertBase( str, 10, b, x.s ); + } + + // Decimal point? + if ( ( e = str.indexOf('.') ) > -1 ) str = str.replace( '.', '' ); + + // Exponential form? + if ( ( i = str.search( /e/i ) ) > 0 ) { + + // Determine exponent. + if ( e < 0 ) e = i; + e += +str.slice( i + 1 ); + str = str.substring( 0, i ); + } else if ( e < 0 ) { + + // Integer. + e = str.length; + } + + // Determine leading zeros. + for ( i = 0; str.charCodeAt(i) === 48; i++ ); + + // Determine trailing zeros. + for ( len = str.length; str.charCodeAt(--len) === 48; ); + str = str.slice( i, len + 1 ); + + if (str) { + len = str.length; + + // Disallow numbers with over 15 significant digits if number type. + // 'new BigNumber() number type has more than 15 significant digits: {n}' + if ( num && ERRORS && len > 15 && ( n > MAX_SAFE_INTEGER || n !== mathfloor(n) ) ) { + raise( id, tooManyDigits, x.s * n ); + } + + e = e - i - 1; + + // Overflow? + if ( e > MAX_EXP ) { + + // Infinity. + x.c = x.e = null; + + // Underflow? + } else if ( e < MIN_EXP ) { + + // Zero. + x.c = [ x.e = 0 ]; + } else { + x.e = e; + x.c = []; + + // Transform base + + // e is the base 10 exponent. + // i is where to slice str to get the first element of the coefficient array. + i = ( e + 1 ) % LOG_BASE; + if ( e < 0 ) i += LOG_BASE; + + if ( i < len ) { + if (i) x.c.push( +str.slice( 0, i ) ); + + for ( len -= LOG_BASE; i < len; ) { + x.c.push( +str.slice( i, i += LOG_BASE ) ); + } + + str = str.slice(i); + i = LOG_BASE - str.length; + } else { + i -= len; + } + + for ( ; i--; str += '0' ); + x.c.push( +str ); + } + } else { + + // Zero. + x.c = [ x.e = 0 ]; + } + + id = 0; + } + + + // CONSTRUCTOR PROPERTIES + + + BigNumber.another = constructorFactory; + + BigNumber.ROUND_UP = 0; + BigNumber.ROUND_DOWN = 1; + BigNumber.ROUND_CEIL = 2; + BigNumber.ROUND_FLOOR = 3; + BigNumber.ROUND_HALF_UP = 4; + BigNumber.ROUND_HALF_DOWN = 5; + BigNumber.ROUND_HALF_EVEN = 6; + BigNumber.ROUND_HALF_CEIL = 7; + BigNumber.ROUND_HALF_FLOOR = 8; + BigNumber.EUCLID = 9; + + + /* + * Configure infrequently-changing library-wide settings. + * + * Accept an object or an argument list, with one or many of the following properties or + * parameters respectively: + * + * DECIMAL_PLACES {number} Integer, 0 to MAX inclusive + * ROUNDING_MODE {number} Integer, 0 to 8 inclusive + * EXPONENTIAL_AT {number|number[]} Integer, -MAX to MAX inclusive or + * [integer -MAX to 0 incl., 0 to MAX incl.] + * RANGE {number|number[]} Non-zero integer, -MAX to MAX inclusive or + * [integer -MAX to -1 incl., integer 1 to MAX incl.] + * ERRORS {boolean|number} true, false, 1 or 0 + * CRYPTO {boolean|number} true, false, 1 or 0 + * MODULO_MODE {number} 0 to 9 inclusive + * POW_PRECISION {number} 0 to MAX inclusive + * FORMAT {object} See BigNumber.prototype.toFormat + * decimalSeparator {string} + * groupSeparator {string} + * groupSize {number} + * secondaryGroupSize {number} + * fractionGroupSeparator {string} + * fractionGroupSize {number} + * + * (The values assigned to the above FORMAT object properties are not checked for validity.) + * + * E.g. + * BigNumber.config(20, 4) is equivalent to + * BigNumber.config({ DECIMAL_PLACES : 20, ROUNDING_MODE : 4 }) + * + * Ignore properties/parameters set to null or undefined. + * Return an object with the properties current values. + */ + BigNumber.config = BigNumber.set = function () { + var v, p, + i = 0, + r = {}, + a = arguments, + o = a[0], + has = o && typeof o == 'object' + ? function () { if ( o.hasOwnProperty(p) ) return ( v = o[p] ) != null; } + : function () { if ( a.length > i ) return ( v = a[i++] ) != null; }; + + // DECIMAL_PLACES {number} Integer, 0 to MAX inclusive. + // 'config() DECIMAL_PLACES not an integer: {v}' + // 'config() DECIMAL_PLACES out of range: {v}' + if ( has( p = 'DECIMAL_PLACES' ) && isValidInt( v, 0, MAX, 2, p ) ) { + DECIMAL_PLACES = v | 0; + } + r[p] = DECIMAL_PLACES; + + // ROUNDING_MODE {number} Integer, 0 to 8 inclusive. + // 'config() ROUNDING_MODE not an integer: {v}' + // 'config() ROUNDING_MODE out of range: {v}' + if ( has( p = 'ROUNDING_MODE' ) && isValidInt( v, 0, 8, 2, p ) ) { + ROUNDING_MODE = v | 0; + } + r[p] = ROUNDING_MODE; + + // EXPONENTIAL_AT {number|number[]} + // Integer, -MAX to MAX inclusive or [integer -MAX to 0 inclusive, 0 to MAX inclusive]. + // 'config() EXPONENTIAL_AT not an integer: {v}' + // 'config() EXPONENTIAL_AT out of range: {v}' + if ( has( p = 'EXPONENTIAL_AT' ) ) { + + if ( isArray(v) ) { + if ( isValidInt( v[0], -MAX, 0, 2, p ) && isValidInt( v[1], 0, MAX, 2, p ) ) { + TO_EXP_NEG = v[0] | 0; + TO_EXP_POS = v[1] | 0; + } + } else if ( isValidInt( v, -MAX, MAX, 2, p ) ) { + TO_EXP_NEG = -( TO_EXP_POS = ( v < 0 ? -v : v ) | 0 ); + } + } + r[p] = [ TO_EXP_NEG, TO_EXP_POS ]; + + // RANGE {number|number[]} Non-zero integer, -MAX to MAX inclusive or + // [integer -MAX to -1 inclusive, integer 1 to MAX inclusive]. + // 'config() RANGE not an integer: {v}' + // 'config() RANGE cannot be zero: {v}' + // 'config() RANGE out of range: {v}' + if ( has( p = 'RANGE' ) ) { + + if ( isArray(v) ) { + if ( isValidInt( v[0], -MAX, -1, 2, p ) && isValidInt( v[1], 1, MAX, 2, p ) ) { + MIN_EXP = v[0] | 0; + MAX_EXP = v[1] | 0; + } + } else if ( isValidInt( v, -MAX, MAX, 2, p ) ) { + if ( v | 0 ) MIN_EXP = -( MAX_EXP = ( v < 0 ? -v : v ) | 0 ); + else if (ERRORS) raise( 2, p + ' cannot be zero', v ); + } + } + r[p] = [ MIN_EXP, MAX_EXP ]; + + // ERRORS {boolean|number} true, false, 1 or 0. + // 'config() ERRORS not a boolean or binary digit: {v}' + if ( has( p = 'ERRORS' ) ) { + + if ( v === !!v || v === 1 || v === 0 ) { + id = 0; + isValidInt = ( ERRORS = !!v ) ? intValidatorWithErrors : intValidatorNoErrors; + } else if (ERRORS) { + raise( 2, p + notBool, v ); + } + } + r[p] = ERRORS; + + // CRYPTO {boolean|number} true, false, 1 or 0. + // 'config() CRYPTO not a boolean or binary digit: {v}' + // 'config() crypto unavailable: {crypto}' + if ( has( p = 'CRYPTO' ) ) { + + if ( v === true || v === false || v === 1 || v === 0 ) { + if (v) { + v = typeof crypto == 'undefined'; + if ( !v && crypto && (crypto.getRandomValues || crypto.randomBytes)) { + CRYPTO = true; + } else if (ERRORS) { + raise( 2, 'crypto unavailable', v ? void 0 : crypto ); + } else { + CRYPTO = false; + } + } else { + CRYPTO = false; + } + } else if (ERRORS) { + raise( 2, p + notBool, v ); + } + } + r[p] = CRYPTO; + + // MODULO_MODE {number} Integer, 0 to 9 inclusive. + // 'config() MODULO_MODE not an integer: {v}' + // 'config() MODULO_MODE out of range: {v}' + if ( has( p = 'MODULO_MODE' ) && isValidInt( v, 0, 9, 2, p ) ) { + MODULO_MODE = v | 0; + } + r[p] = MODULO_MODE; + + // POW_PRECISION {number} Integer, 0 to MAX inclusive. + // 'config() POW_PRECISION not an integer: {v}' + // 'config() POW_PRECISION out of range: {v}' + if ( has( p = 'POW_PRECISION' ) && isValidInt( v, 0, MAX, 2, p ) ) { + POW_PRECISION = v | 0; + } + r[p] = POW_PRECISION; + + // FORMAT {object} + // 'config() FORMAT not an object: {v}' + if ( has( p = 'FORMAT' ) ) { + + if ( typeof v == 'object' ) { + FORMAT = v; + } else if (ERRORS) { + raise( 2, p + ' not an object', v ); + } + } + r[p] = FORMAT; + + return r; + }; + + + /* + * Return a new BigNumber whose value is the maximum of the arguments. + * + * arguments {number|string|BigNumber} + */ + BigNumber.max = function () { return maxOrMin( arguments, P.lt ); }; + + + /* + * Return a new BigNumber whose value is the minimum of the arguments. + * + * arguments {number|string|BigNumber} + */ + BigNumber.min = function () { return maxOrMin( arguments, P.gt ); }; + + + /* + * Return a new BigNumber with a random value equal to or greater than 0 and less than 1, + * and with dp, or DECIMAL_PLACES if dp is omitted, decimal places (or less if trailing + * zeros are produced). + * + * [dp] {number} Decimal places. Integer, 0 to MAX inclusive. + * + * 'random() decimal places not an integer: {dp}' + * 'random() decimal places out of range: {dp}' + * 'random() crypto unavailable: {crypto}' + */ + BigNumber.random = (function () { + var pow2_53 = 0x20000000000000; + + // Return a 53 bit integer n, where 0 <= n < 9007199254740992. + // Check if Math.random() produces more than 32 bits of randomness. + // If it does, assume at least 53 bits are produced, otherwise assume at least 30 bits. + // 0x40000000 is 2^30, 0x800000 is 2^23, 0x1fffff is 2^21 - 1. + var random53bitInt = (Math.random() * pow2_53) & 0x1fffff + ? function () { return mathfloor( Math.random() * pow2_53 ); } + : function () { return ((Math.random() * 0x40000000 | 0) * 0x800000) + + (Math.random() * 0x800000 | 0); }; + + return function (dp) { + var a, b, e, k, v, + i = 0, + c = [], + rand = new BigNumber(ONE); + + dp = dp == null || !isValidInt( dp, 0, MAX, 14 ) ? DECIMAL_PLACES : dp | 0; + k = mathceil( dp / LOG_BASE ); + + if (CRYPTO) { + + // Browsers supporting crypto.getRandomValues. + if (crypto.getRandomValues) { + + a = crypto.getRandomValues( new Uint32Array( k *= 2 ) ); + + for ( ; i < k; ) { + + // 53 bits: + // ((Math.pow(2, 32) - 1) * Math.pow(2, 21)).toString(2) + // 11111 11111111 11111111 11111111 11100000 00000000 00000000 + // ((Math.pow(2, 32) - 1) >>> 11).toString(2) + // 11111 11111111 11111111 + // 0x20000 is 2^21. + v = a[i] * 0x20000 + (a[i + 1] >>> 11); + + // Rejection sampling: + // 0 <= v < 9007199254740992 + // Probability that v >= 9e15, is + // 7199254740992 / 9007199254740992 ~= 0.0008, i.e. 1 in 1251 + if ( v >= 9e15 ) { + b = crypto.getRandomValues( new Uint32Array(2) ); + a[i] = b[0]; + a[i + 1] = b[1]; + } else { + + // 0 <= v <= 8999999999999999 + // 0 <= (v % 1e14) <= 99999999999999 + c.push( v % 1e14 ); + i += 2; + } + } + i = k / 2; + + // Node.js supporting crypto.randomBytes. + } else if (crypto.randomBytes) { + + // buffer + a = crypto.randomBytes( k *= 7 ); + + for ( ; i < k; ) { + + // 0x1000000000000 is 2^48, 0x10000000000 is 2^40 + // 0x100000000 is 2^32, 0x1000000 is 2^24 + // 11111 11111111 11111111 11111111 11111111 11111111 11111111 + // 0 <= v < 9007199254740992 + v = ( ( a[i] & 31 ) * 0x1000000000000 ) + ( a[i + 1] * 0x10000000000 ) + + ( a[i + 2] * 0x100000000 ) + ( a[i + 3] * 0x1000000 ) + + ( a[i + 4] << 16 ) + ( a[i + 5] << 8 ) + a[i + 6]; + + if ( v >= 9e15 ) { + crypto.randomBytes(7).copy( a, i ); + } else { + + // 0 <= (v % 1e14) <= 99999999999999 + c.push( v % 1e14 ); + i += 7; + } + } + i = k / 7; + } else { + CRYPTO = false; + if (ERRORS) raise( 14, 'crypto unavailable', crypto ); + } + } + + // Use Math.random. + if (!CRYPTO) { + + for ( ; i < k; ) { + v = random53bitInt(); + if ( v < 9e15 ) c[i++] = v % 1e14; + } + } + + k = c[--i]; + dp %= LOG_BASE; + + // Convert trailing digits to zeros according to dp. + if ( k && dp ) { + v = POWS_TEN[LOG_BASE - dp]; + c[i] = mathfloor( k / v ) * v; + } + + // Remove trailing elements which are zero. + for ( ; c[i] === 0; c.pop(), i-- ); + + // Zero? + if ( i < 0 ) { + c = [ e = 0 ]; + } else { + + // Remove leading elements which are zero and adjust exponent accordingly. + for ( e = -1 ; c[0] === 0; c.splice(0, 1), e -= LOG_BASE); + + // Count the digits of the first element of c to determine leading zeros, and... + for ( i = 1, v = c[0]; v >= 10; v /= 10, i++); + + // adjust the exponent accordingly. + if ( i < LOG_BASE ) e -= LOG_BASE - i; + } + + rand.e = e; + rand.c = c; + return rand; + }; + })(); + + + // PRIVATE FUNCTIONS + + + // Convert a numeric string of baseIn to a numeric string of baseOut. + function convertBase( str, baseOut, baseIn, sign ) { + var d, e, k, r, x, xc, y, + i = str.indexOf( '.' ), + dp = DECIMAL_PLACES, + rm = ROUNDING_MODE; + + if ( baseIn < 37 ) str = str.toLowerCase(); + + // Non-integer. + if ( i >= 0 ) { + k = POW_PRECISION; + + // Unlimited precision. + POW_PRECISION = 0; + str = str.replace( '.', '' ); + y = new BigNumber(baseIn); + x = y.pow( str.length - i ); + POW_PRECISION = k; + + // Convert str as if an integer, then restore the fraction part by dividing the + // result by its base raised to a power. + y.c = toBaseOut( toFixedPoint( coeffToString( x.c ), x.e ), 10, baseOut ); + y.e = y.c.length; + } + + // Convert the number as integer. + xc = toBaseOut( str, baseIn, baseOut ); + e = k = xc.length; + + // Remove trailing zeros. + for ( ; xc[--k] == 0; xc.pop() ); + if ( !xc[0] ) return '0'; + + if ( i < 0 ) { + --e; + } else { + x.c = xc; + x.e = e; + + // sign is needed for correct rounding. + x.s = sign; + x = div( x, y, dp, rm, baseOut ); + xc = x.c; + r = x.r; + e = x.e; + } + + d = e + dp + 1; + + // The rounding digit, i.e. the digit to the right of the digit that may be rounded up. + i = xc[d]; + k = baseOut / 2; + r = r || d < 0 || xc[d + 1] != null; + + r = rm < 4 ? ( i != null || r ) && ( rm == 0 || rm == ( x.s < 0 ? 3 : 2 ) ) + : i > k || i == k &&( rm == 4 || r || rm == 6 && xc[d - 1] & 1 || + rm == ( x.s < 0 ? 8 : 7 ) ); + + if ( d < 1 || !xc[0] ) { + + // 1^-dp or 0. + str = r ? toFixedPoint( '1', -dp ) : '0'; + } else { + xc.length = d; + + if (r) { + + // Rounding up may mean the previous digit has to be rounded up and so on. + for ( --baseOut; ++xc[--d] > baseOut; ) { + xc[d] = 0; + + if ( !d ) { + ++e; + xc = [1].concat(xc); + } + } + } + + // Determine trailing zeros. + for ( k = xc.length; !xc[--k]; ); + + // E.g. [4, 11, 15] becomes 4bf. + for ( i = 0, str = ''; i <= k; str += ALPHABET.charAt( xc[i++] ) ); + str = toFixedPoint( str, e ); + } + + // The caller will add the sign. + return str; + } + + + // Perform division in the specified base. Called by div and convertBase. + div = (function () { + + // Assume non-zero x and k. + function multiply( x, k, base ) { + var m, temp, xlo, xhi, + carry = 0, + i = x.length, + klo = k % SQRT_BASE, + khi = k / SQRT_BASE | 0; + + for ( x = x.slice(); i--; ) { + xlo = x[i] % SQRT_BASE; + xhi = x[i] / SQRT_BASE | 0; + m = khi * xlo + xhi * klo; + temp = klo * xlo + ( ( m % SQRT_BASE ) * SQRT_BASE ) + carry; + carry = ( temp / base | 0 ) + ( m / SQRT_BASE | 0 ) + khi * xhi; + x[i] = temp % base; + } + + if (carry) x = [carry].concat(x); + + return x; + } + + function compare( a, b, aL, bL ) { + var i, cmp; + + if ( aL != bL ) { + cmp = aL > bL ? 1 : -1; + } else { + + for ( i = cmp = 0; i < aL; i++ ) { + + if ( a[i] != b[i] ) { + cmp = a[i] > b[i] ? 1 : -1; + break; + } + } + } + return cmp; + } + + function subtract( a, b, aL, base ) { + var i = 0; + + // Subtract b from a. + for ( ; aL--; ) { + a[aL] -= i; + i = a[aL] < b[aL] ? 1 : 0; + a[aL] = i * base + a[aL] - b[aL]; + } + + // Remove leading zeros. + for ( ; !a[0] && a.length > 1; a.splice(0, 1) ); + } + + // x: dividend, y: divisor. + return function ( x, y, dp, rm, base ) { + var cmp, e, i, more, n, prod, prodL, q, qc, rem, remL, rem0, xi, xL, yc0, + yL, yz, + s = x.s == y.s ? 1 : -1, + xc = x.c, + yc = y.c; + + // Either NaN, Infinity or 0? + if ( !xc || !xc[0] || !yc || !yc[0] ) { + + return new BigNumber( + + // Return NaN if either NaN, or both Infinity or 0. + !x.s || !y.s || ( xc ? yc && xc[0] == yc[0] : !yc ) ? NaN : + + // Return ±0 if x is ±0 or y is ±Infinity, or return ±Infinity as y is ±0. + xc && xc[0] == 0 || !yc ? s * 0 : s / 0 + ); + } + + q = new BigNumber(s); + qc = q.c = []; + e = x.e - y.e; + s = dp + e + 1; + + if ( !base ) { + base = BASE; + e = bitFloor( x.e / LOG_BASE ) - bitFloor( y.e / LOG_BASE ); + s = s / LOG_BASE | 0; + } + + // Result exponent may be one less then the current value of e. + // The coefficients of the BigNumbers from convertBase may have trailing zeros. + for ( i = 0; yc[i] == ( xc[i] || 0 ); i++ ); + if ( yc[i] > ( xc[i] || 0 ) ) e--; + + if ( s < 0 ) { + qc.push(1); + more = true; + } else { + xL = xc.length; + yL = yc.length; + i = 0; + s += 2; + + // Normalise xc and yc so highest order digit of yc is >= base / 2. + + n = mathfloor( base / ( yc[0] + 1 ) ); + + // Not necessary, but to handle odd bases where yc[0] == ( base / 2 ) - 1. + // if ( n > 1 || n++ == 1 && yc[0] < base / 2 ) { + if ( n > 1 ) { + yc = multiply( yc, n, base ); + xc = multiply( xc, n, base ); + yL = yc.length; + xL = xc.length; + } + + xi = yL; + rem = xc.slice( 0, yL ); + remL = rem.length; + + // Add zeros to make remainder as long as divisor. + for ( ; remL < yL; rem[remL++] = 0 ); + yz = yc.slice(); + yz = [0].concat(yz); + yc0 = yc[0]; + if ( yc[1] >= base / 2 ) yc0++; + // Not necessary, but to prevent trial digit n > base, when using base 3. + // else if ( base == 3 && yc0 == 1 ) yc0 = 1 + 1e-15; + + do { + n = 0; + + // Compare divisor and remainder. + cmp = compare( yc, rem, yL, remL ); + + // If divisor < remainder. + if ( cmp < 0 ) { + + // Calculate trial digit, n. + + rem0 = rem[0]; + if ( yL != remL ) rem0 = rem0 * base + ( rem[1] || 0 ); + + // n is how many times the divisor goes into the current remainder. + n = mathfloor( rem0 / yc0 ); + + // Algorithm: + // 1. product = divisor * trial digit (n) + // 2. if product > remainder: product -= divisor, n-- + // 3. remainder -= product + // 4. if product was < remainder at 2: + // 5. compare new remainder and divisor + // 6. If remainder > divisor: remainder -= divisor, n++ + + if ( n > 1 ) { + + // n may be > base only when base is 3. + if (n >= base) n = base - 1; + + // product = divisor * trial digit. + prod = multiply( yc, n, base ); + prodL = prod.length; + remL = rem.length; + + // Compare product and remainder. + // If product > remainder. + // Trial digit n too high. + // n is 1 too high about 5% of the time, and is not known to have + // ever been more than 1 too high. + while ( compare( prod, rem, prodL, remL ) == 1 ) { + n--; + + // Subtract divisor from product. + subtract( prod, yL < prodL ? yz : yc, prodL, base ); + prodL = prod.length; + cmp = 1; + } + } else { + + // n is 0 or 1, cmp is -1. + // If n is 0, there is no need to compare yc and rem again below, + // so change cmp to 1 to avoid it. + // If n is 1, leave cmp as -1, so yc and rem are compared again. + if ( n == 0 ) { + + // divisor < remainder, so n must be at least 1. + cmp = n = 1; + } + + // product = divisor + prod = yc.slice(); + prodL = prod.length; + } + + if ( prodL < remL ) prod = [0].concat(prod); + + // Subtract product from remainder. + subtract( rem, prod, remL, base ); + remL = rem.length; + + // If product was < remainder. + if ( cmp == -1 ) { + + // Compare divisor and new remainder. + // If divisor < new remainder, subtract divisor from remainder. + // Trial digit n too low. + // n is 1 too low about 5% of the time, and very rarely 2 too low. + while ( compare( yc, rem, yL, remL ) < 1 ) { + n++; + + // Subtract divisor from remainder. + subtract( rem, yL < remL ? yz : yc, remL, base ); + remL = rem.length; + } + } + } else if ( cmp === 0 ) { + n++; + rem = [0]; + } // else cmp === 1 and n will be 0 + + // Add the next digit, n, to the result array. + qc[i++] = n; + + // Update the remainder. + if ( rem[0] ) { + rem[remL++] = xc[xi] || 0; + } else { + rem = [ xc[xi] ]; + remL = 1; + } + } while ( ( xi++ < xL || rem[0] != null ) && s-- ); + + more = rem[0] != null; + + // Leading zero? + if ( !qc[0] ) qc.splice(0, 1); + } + + if ( base == BASE ) { + + // To calculate q.e, first get the number of digits of qc[0]. + for ( i = 1, s = qc[0]; s >= 10; s /= 10, i++ ); + round( q, dp + ( q.e = i + e * LOG_BASE - 1 ) + 1, rm, more ); + + // Caller is convertBase. + } else { + q.e = e; + q.r = +more; + } + + return q; + }; + })(); + + + /* + * Return a string representing the value of BigNumber n in fixed-point or exponential + * notation rounded to the specified decimal places or significant digits. + * + * n is a BigNumber. + * i is the index of the last digit required (i.e. the digit that may be rounded up). + * rm is the rounding mode. + * caller is caller id: toExponential 19, toFixed 20, toFormat 21, toPrecision 24. + */ + function format( n, i, rm, caller ) { + var c0, e, ne, len, str; + + rm = rm != null && isValidInt( rm, 0, 8, caller, roundingMode ) + ? rm | 0 : ROUNDING_MODE; + + if ( !n.c ) return n.toString(); + c0 = n.c[0]; + ne = n.e; + + if ( i == null ) { + str = coeffToString( n.c ); + str = caller == 19 || caller == 24 && ne <= TO_EXP_NEG + ? toExponential( str, ne ) + : toFixedPoint( str, ne ); + } else { + n = round( new BigNumber(n), i, rm ); + + // n.e may have changed if the value was rounded up. + e = n.e; + + str = coeffToString( n.c ); + len = str.length; + + // toPrecision returns exponential notation if the number of significant digits + // specified is less than the number of digits necessary to represent the integer + // part of the value in fixed-point notation. + + // Exponential notation. + if ( caller == 19 || caller == 24 && ( i <= e || e <= TO_EXP_NEG ) ) { + + // Append zeros? + for ( ; len < i; str += '0', len++ ); + str = toExponential( str, e ); + + // Fixed-point notation. + } else { + i -= ne; + str = toFixedPoint( str, e ); + + // Append zeros? + if ( e + 1 > len ) { + if ( --i > 0 ) for ( str += '.'; i--; str += '0' ); + } else { + i += e - len; + if ( i > 0 ) { + if ( e + 1 == len ) str += '.'; + for ( ; i--; str += '0' ); + } + } + } + } + + return n.s < 0 && c0 ? '-' + str : str; + } + + + // Handle BigNumber.max and BigNumber.min. + function maxOrMin( args, method ) { + var m, n, + i = 0; + + if ( isArray( args[0] ) ) args = args[0]; + m = new BigNumber( args[0] ); + + for ( ; ++i < args.length; ) { + n = new BigNumber( args[i] ); + + // If any number is NaN, return NaN. + if ( !n.s ) { + m = n; + break; + } else if ( method.call( m, n ) ) { + m = n; + } + } + + return m; + } + + + /* + * Return true if n is an integer in range, otherwise throw. + * Use for argument validation when ERRORS is true. + */ + function intValidatorWithErrors( n, min, max, caller, name ) { + if ( n < min || n > max || n != truncate(n) ) { + raise( caller, ( name || 'decimal places' ) + + ( n < min || n > max ? ' out of range' : ' not an integer' ), n ); + } + + return true; + } + + + /* + * Strip trailing zeros, calculate base 10 exponent and check against MIN_EXP and MAX_EXP. + * Called by minus, plus and times. + */ + function normalise( n, c, e ) { + var i = 1, + j = c.length; + + // Remove trailing zeros. + for ( ; !c[--j]; c.pop() ); + + // Calculate the base 10 exponent. First get the number of digits of c[0]. + for ( j = c[0]; j >= 10; j /= 10, i++ ); + + // Overflow? + if ( ( e = i + e * LOG_BASE - 1 ) > MAX_EXP ) { + + // Infinity. + n.c = n.e = null; + + // Underflow? + } else if ( e < MIN_EXP ) { + + // Zero. + n.c = [ n.e = 0 ]; + } else { + n.e = e; + n.c = c; + } + + return n; + } + + + // Handle values that fail the validity test in BigNumber. + parseNumeric = (function () { + var basePrefix = /^(-?)0([xbo])(?=\w[\w.]*$)/i, + dotAfter = /^([^.]+)\.$/, + dotBefore = /^\.([^.]+)$/, + isInfinityOrNaN = /^-?(Infinity|NaN)$/, + whitespaceOrPlus = /^\s*\+(?=[\w.])|^\s+|\s+$/g; + + return function ( x, str, num, b ) { + var base, + s = num ? str : str.replace( whitespaceOrPlus, '' ); + + // No exception on ±Infinity or NaN. + if ( isInfinityOrNaN.test(s) ) { + x.s = isNaN(s) ? null : s < 0 ? -1 : 1; + } else { + if ( !num ) { + + // basePrefix = /^(-?)0([xbo])(?=\w[\w.]*$)/i + s = s.replace( basePrefix, function ( m, p1, p2 ) { + base = ( p2 = p2.toLowerCase() ) == 'x' ? 16 : p2 == 'b' ? 2 : 8; + return !b || b == base ? p1 : m; + }); + + if (b) { + base = b; + + // E.g. '1.' to '1', '.1' to '0.1' + s = s.replace( dotAfter, '$1' ).replace( dotBefore, '0.$1' ); + } + + if ( str != s ) return new BigNumber( s, base ); + } + + // 'new BigNumber() not a number: {n}' + // 'new BigNumber() not a base {b} number: {n}' + if (ERRORS) raise( id, 'not a' + ( b ? ' base ' + b : '' ) + ' number', str ); + x.s = null; + } + + x.c = x.e = null; + id = 0; + } + })(); + + + // Throw a BigNumber Error. + function raise( caller, msg, val ) { + var error = new Error( [ + 'new BigNumber', // 0 + 'cmp', // 1 + 'config', // 2 + 'div', // 3 + 'divToInt', // 4 + 'eq', // 5 + 'gt', // 6 + 'gte', // 7 + 'lt', // 8 + 'lte', // 9 + 'minus', // 10 + 'mod', // 11 + 'plus', // 12 + 'precision', // 13 + 'random', // 14 + 'round', // 15 + 'shift', // 16 + 'times', // 17 + 'toDigits', // 18 + 'toExponential', // 19 + 'toFixed', // 20 + 'toFormat', // 21 + 'toFraction', // 22 + 'pow', // 23 + 'toPrecision', // 24 + 'toString', // 25 + 'BigNumber' // 26 + ][caller] + '() ' + msg + ': ' + val ); + + error.name = 'BigNumber Error'; + id = 0; + throw error; + } + + + /* + * Round x to sd significant digits using rounding mode rm. Check for over/under-flow. + * If r is truthy, it is known that there are more digits after the rounding digit. + */ + function round( x, sd, rm, r ) { + var d, i, j, k, n, ni, rd, + xc = x.c, + pows10 = POWS_TEN; + + // if x is not Infinity or NaN... + if (xc) { + + // rd is the rounding digit, i.e. the digit after the digit that may be rounded up. + // n is a base 1e14 number, the value of the element of array x.c containing rd. + // ni is the index of n within x.c. + // d is the number of digits of n. + // i is the index of rd within n including leading zeros. + // j is the actual index of rd within n (if < 0, rd is a leading zero). + out: { + + // Get the number of digits of the first element of xc. + for ( d = 1, k = xc[0]; k >= 10; k /= 10, d++ ); + i = sd - d; + + // If the rounding digit is in the first element of xc... + if ( i < 0 ) { + i += LOG_BASE; + j = sd; + n = xc[ ni = 0 ]; + + // Get the rounding digit at index j of n. + rd = n / pows10[ d - j - 1 ] % 10 | 0; + } else { + ni = mathceil( ( i + 1 ) / LOG_BASE ); + + if ( ni >= xc.length ) { + + if (r) { + + // Needed by sqrt. + for ( ; xc.length <= ni; xc.push(0) ); + n = rd = 0; + d = 1; + i %= LOG_BASE; + j = i - LOG_BASE + 1; + } else { + break out; + } + } else { + n = k = xc[ni]; + + // Get the number of digits of n. + for ( d = 1; k >= 10; k /= 10, d++ ); + + // Get the index of rd within n. + i %= LOG_BASE; + + // Get the index of rd within n, adjusted for leading zeros. + // The number of leading zeros of n is given by LOG_BASE - d. + j = i - LOG_BASE + d; + + // Get the rounding digit at index j of n. + rd = j < 0 ? 0 : n / pows10[ d - j - 1 ] % 10 | 0; + } + } + + r = r || sd < 0 || + + // Are there any non-zero digits after the rounding digit? + // The expression n % pows10[ d - j - 1 ] returns all digits of n to the right + // of the digit at j, e.g. if n is 908714 and j is 2, the expression gives 714. + xc[ni + 1] != null || ( j < 0 ? n : n % pows10[ d - j - 1 ] ); + + r = rm < 4 + ? ( rd || r ) && ( rm == 0 || rm == ( x.s < 0 ? 3 : 2 ) ) + : rd > 5 || rd == 5 && ( rm == 4 || r || rm == 6 && + + // Check whether the digit to the left of the rounding digit is odd. + ( ( i > 0 ? j > 0 ? n / pows10[ d - j ] : 0 : xc[ni - 1] ) % 10 ) & 1 || + rm == ( x.s < 0 ? 8 : 7 ) ); + + if ( sd < 1 || !xc[0] ) { + xc.length = 0; + + if (r) { + + // Convert sd to decimal places. + sd -= x.e + 1; + + // 1, 0.1, 0.01, 0.001, 0.0001 etc. + xc[0] = pows10[ ( LOG_BASE - sd % LOG_BASE ) % LOG_BASE ]; + x.e = -sd || 0; + } else { + + // Zero. + xc[0] = x.e = 0; + } + + return x; + } + + // Remove excess digits. + if ( i == 0 ) { + xc.length = ni; + k = 1; + ni--; + } else { + xc.length = ni + 1; + k = pows10[ LOG_BASE - i ]; + + // E.g. 56700 becomes 56000 if 7 is the rounding digit. + // j > 0 means i > number of leading zeros of n. + xc[ni] = j > 0 ? mathfloor( n / pows10[ d - j ] % pows10[j] ) * k : 0; + } + + // Round up? + if (r) { + + for ( ; ; ) { + + // If the digit to be rounded up is in the first element of xc... + if ( ni == 0 ) { + + // i will be the length of xc[0] before k is added. + for ( i = 1, j = xc[0]; j >= 10; j /= 10, i++ ); + j = xc[0] += k; + for ( k = 1; j >= 10; j /= 10, k++ ); + + // if i != k the length has increased. + if ( i != k ) { + x.e++; + if ( xc[0] == BASE ) xc[0] = 1; + } + + break; + } else { + xc[ni] += k; + if ( xc[ni] != BASE ) break; + xc[ni--] = 0; + k = 1; + } + } + } + + // Remove trailing zeros. + for ( i = xc.length; xc[--i] === 0; xc.pop() ); + } + + // Overflow? Infinity. + if ( x.e > MAX_EXP ) { + x.c = x.e = null; + + // Underflow? Zero. + } else if ( x.e < MIN_EXP ) { + x.c = [ x.e = 0 ]; + } + } + + return x; + } + + + // PROTOTYPE/INSTANCE METHODS + + + /* + * Return a new BigNumber whose value is the absolute value of this BigNumber. + */ + P.absoluteValue = P.abs = function () { + var x = new BigNumber(this); + if ( x.s < 0 ) x.s = 1; + return x; + }; + + + /* + * Return a new BigNumber whose value is the value of this BigNumber rounded to a whole + * number in the direction of Infinity. + */ + P.ceil = function () { + return round( new BigNumber(this), this.e + 1, 2 ); + }; + + + /* + * Return + * 1 if the value of this BigNumber is greater than the value of BigNumber(y, b), + * -1 if the value of this BigNumber is less than the value of BigNumber(y, b), + * 0 if they have the same value, + * or null if the value of either is NaN. + */ + P.comparedTo = P.cmp = function ( y, b ) { + id = 1; + return compare( this, new BigNumber( y, b ) ); + }; + + + /* + * Return the number of decimal places of the value of this BigNumber, or null if the value + * of this BigNumber is ±Infinity or NaN. + */ + P.decimalPlaces = P.dp = function () { + var n, v, + c = this.c; + + if ( !c ) return null; + n = ( ( v = c.length - 1 ) - bitFloor( this.e / LOG_BASE ) ) * LOG_BASE; + + // Subtract the number of trailing zeros of the last number. + if ( v = c[v] ) for ( ; v % 10 == 0; v /= 10, n-- ); + if ( n < 0 ) n = 0; + + return n; + }; + + + /* + * n / 0 = I + * n / N = N + * n / I = 0 + * 0 / n = 0 + * 0 / 0 = N + * 0 / N = N + * 0 / I = 0 + * N / n = N + * N / 0 = N + * N / N = N + * N / I = N + * I / n = I + * I / 0 = I + * I / N = N + * I / I = N + * + * Return a new BigNumber whose value is the value of this BigNumber divided by the value of + * BigNumber(y, b), rounded according to DECIMAL_PLACES and ROUNDING_MODE. + */ + P.dividedBy = P.div = function ( y, b ) { + id = 3; + return div( this, new BigNumber( y, b ), DECIMAL_PLACES, ROUNDING_MODE ); + }; + + + /* + * Return a new BigNumber whose value is the integer part of dividing the value of this + * BigNumber by the value of BigNumber(y, b). + */ + P.dividedToIntegerBy = P.divToInt = function ( y, b ) { + id = 4; + return div( this, new BigNumber( y, b ), 0, 1 ); + }; + + + /* + * Return true if the value of this BigNumber is equal to the value of BigNumber(y, b), + * otherwise returns false. + */ + P.equals = P.eq = function ( y, b ) { + id = 5; + return compare( this, new BigNumber( y, b ) ) === 0; + }; + + + /* + * Return a new BigNumber whose value is the value of this BigNumber rounded to a whole + * number in the direction of -Infinity. + */ + P.floor = function () { + return round( new BigNumber(this), this.e + 1, 3 ); + }; + + + /* + * Return true if the value of this BigNumber is greater than the value of BigNumber(y, b), + * otherwise returns false. + */ + P.greaterThan = P.gt = function ( y, b ) { + id = 6; + return compare( this, new BigNumber( y, b ) ) > 0; + }; + + + /* + * Return true if the value of this BigNumber is greater than or equal to the value of + * BigNumber(y, b), otherwise returns false. + */ + P.greaterThanOrEqualTo = P.gte = function ( y, b ) { + id = 7; + return ( b = compare( this, new BigNumber( y, b ) ) ) === 1 || b === 0; + + }; + + + /* + * Return true if the value of this BigNumber is a finite number, otherwise returns false. + */ + P.isFinite = function () { + return !!this.c; + }; + + + /* + * Return true if the value of this BigNumber is an integer, otherwise return false. + */ + P.isInteger = P.isInt = function () { + return !!this.c && bitFloor( this.e / LOG_BASE ) > this.c.length - 2; + }; + + + /* + * Return true if the value of this BigNumber is NaN, otherwise returns false. + */ + P.isNaN = function () { + return !this.s; + }; + + + /* + * Return true if the value of this BigNumber is negative, otherwise returns false. + */ + P.isNegative = P.isNeg = function () { + return this.s < 0; + }; + + + /* + * Return true if the value of this BigNumber is 0 or -0, otherwise returns false. + */ + P.isZero = function () { + return !!this.c && this.c[0] == 0; + }; + + + /* + * Return true if the value of this BigNumber is less than the value of BigNumber(y, b), + * otherwise returns false. + */ + P.lessThan = P.lt = function ( y, b ) { + id = 8; + return compare( this, new BigNumber( y, b ) ) < 0; + }; + + + /* + * Return true if the value of this BigNumber is less than or equal to the value of + * BigNumber(y, b), otherwise returns false. + */ + P.lessThanOrEqualTo = P.lte = function ( y, b ) { + id = 9; + return ( b = compare( this, new BigNumber( y, b ) ) ) === -1 || b === 0; + }; + + + /* + * n - 0 = n + * n - N = N + * n - I = -I + * 0 - n = -n + * 0 - 0 = 0 + * 0 - N = N + * 0 - I = -I + * N - n = N + * N - 0 = N + * N - N = N + * N - I = N + * I - n = I + * I - 0 = I + * I - N = N + * I - I = N + * + * Return a new BigNumber whose value is the value of this BigNumber minus the value of + * BigNumber(y, b). + */ + P.minus = P.sub = function ( y, b ) { + var i, j, t, xLTy, + x = this, + a = x.s; + + id = 10; + y = new BigNumber( y, b ); + b = y.s; + + // Either NaN? + if ( !a || !b ) return new BigNumber(NaN); + + // Signs differ? + if ( a != b ) { + y.s = -b; + return x.plus(y); + } + + var xe = x.e / LOG_BASE, + ye = y.e / LOG_BASE, + xc = x.c, + yc = y.c; + + if ( !xe || !ye ) { + + // Either Infinity? + if ( !xc || !yc ) return xc ? ( y.s = -b, y ) : new BigNumber( yc ? x : NaN ); + + // Either zero? + if ( !xc[0] || !yc[0] ) { + + // Return y if y is non-zero, x if x is non-zero, or zero if both are zero. + return yc[0] ? ( y.s = -b, y ) : new BigNumber( xc[0] ? x : + + // IEEE 754 (2008) 6.3: n - n = -0 when rounding to -Infinity + ROUNDING_MODE == 3 ? -0 : 0 ); + } + } + + xe = bitFloor(xe); + ye = bitFloor(ye); + xc = xc.slice(); + + // Determine which is the bigger number. + if ( a = xe - ye ) { + + if ( xLTy = a < 0 ) { + a = -a; + t = xc; + } else { + ye = xe; + t = yc; + } + + t.reverse(); + + // Prepend zeros to equalise exponents. + for ( b = a; b--; t.push(0) ); + t.reverse(); + } else { + + // Exponents equal. Check digit by digit. + j = ( xLTy = ( a = xc.length ) < ( b = yc.length ) ) ? a : b; + + for ( a = b = 0; b < j; b++ ) { + + if ( xc[b] != yc[b] ) { + xLTy = xc[b] < yc[b]; + break; + } + } + } + + // x < y? Point xc to the array of the bigger number. + if (xLTy) t = xc, xc = yc, yc = t, y.s = -y.s; + + b = ( j = yc.length ) - ( i = xc.length ); + + // Append zeros to xc if shorter. + // No need to add zeros to yc if shorter as subtract only needs to start at yc.length. + if ( b > 0 ) for ( ; b--; xc[i++] = 0 ); + b = BASE - 1; + + // Subtract yc from xc. + for ( ; j > a; ) { + + if ( xc[--j] < yc[j] ) { + for ( i = j; i && !xc[--i]; xc[i] = b ); + --xc[i]; + xc[j] += BASE; + } + + xc[j] -= yc[j]; + } + + // Remove leading zeros and adjust exponent accordingly. + for ( ; xc[0] == 0; xc.splice(0, 1), --ye ); + + // Zero? + if ( !xc[0] ) { + + // Following IEEE 754 (2008) 6.3, + // n - n = +0 but n - n = -0 when rounding towards -Infinity. + y.s = ROUNDING_MODE == 3 ? -1 : 1; + y.c = [ y.e = 0 ]; + return y; + } + + // No need to check for Infinity as +x - +y != Infinity && -x - -y != Infinity + // for finite x and y. + return normalise( y, xc, ye ); + }; + + + /* + * n % 0 = N + * n % N = N + * n % I = n + * 0 % n = 0 + * -0 % n = -0 + * 0 % 0 = N + * 0 % N = N + * 0 % I = 0 + * N % n = N + * N % 0 = N + * N % N = N + * N % I = N + * I % n = N + * I % 0 = N + * I % N = N + * I % I = N + * + * Return a new BigNumber whose value is the value of this BigNumber modulo the value of + * BigNumber(y, b). The result depends on the value of MODULO_MODE. + */ + P.modulo = P.mod = function ( y, b ) { + var q, s, + x = this; + + id = 11; + y = new BigNumber( y, b ); + + // Return NaN if x is Infinity or NaN, or y is NaN or zero. + if ( !x.c || !y.s || y.c && !y.c[0] ) { + return new BigNumber(NaN); + + // Return x if y is Infinity or x is zero. + } else if ( !y.c || x.c && !x.c[0] ) { + return new BigNumber(x); + } + + if ( MODULO_MODE == 9 ) { + + // Euclidian division: q = sign(y) * floor(x / abs(y)) + // r = x - qy where 0 <= r < abs(y) + s = y.s; + y.s = 1; + q = div( x, y, 0, 3 ); + y.s = s; + q.s *= s; + } else { + q = div( x, y, 0, MODULO_MODE ); + } + + return x.minus( q.times(y) ); + }; + + + /* + * Return a new BigNumber whose value is the value of this BigNumber negated, + * i.e. multiplied by -1. + */ + P.negated = P.neg = function () { + var x = new BigNumber(this); + x.s = -x.s || null; + return x; + }; + + + /* + * n + 0 = n + * n + N = N + * n + I = I + * 0 + n = n + * 0 + 0 = 0 + * 0 + N = N + * 0 + I = I + * N + n = N + * N + 0 = N + * N + N = N + * N + I = N + * I + n = I + * I + 0 = I + * I + N = N + * I + I = I + * + * Return a new BigNumber whose value is the value of this BigNumber plus the value of + * BigNumber(y, b). + */ + P.plus = P.add = function ( y, b ) { + var t, + x = this, + a = x.s; + + id = 12; + y = new BigNumber( y, b ); + b = y.s; + + // Either NaN? + if ( !a || !b ) return new BigNumber(NaN); + + // Signs differ? + if ( a != b ) { + y.s = -b; + return x.minus(y); + } + + var xe = x.e / LOG_BASE, + ye = y.e / LOG_BASE, + xc = x.c, + yc = y.c; + + if ( !xe || !ye ) { + + // Return ±Infinity if either ±Infinity. + if ( !xc || !yc ) return new BigNumber( a / 0 ); + + // Either zero? + // Return y if y is non-zero, x if x is non-zero, or zero if both are zero. + if ( !xc[0] || !yc[0] ) return yc[0] ? y : new BigNumber( xc[0] ? x : a * 0 ); + } + + xe = bitFloor(xe); + ye = bitFloor(ye); + xc = xc.slice(); + + // Prepend zeros to equalise exponents. Faster to use reverse then do unshifts. + if ( a = xe - ye ) { + if ( a > 0 ) { + ye = xe; + t = yc; + } else { + a = -a; + t = xc; + } + + t.reverse(); + for ( ; a--; t.push(0) ); + t.reverse(); + } + + a = xc.length; + b = yc.length; + + // Point xc to the longer array, and b to the shorter length. + if ( a - b < 0 ) t = yc, yc = xc, xc = t, b = a; + + // Only start adding at yc.length - 1 as the further digits of xc can be ignored. + for ( a = 0; b; ) { + a = ( xc[--b] = xc[b] + yc[b] + a ) / BASE | 0; + xc[b] = BASE === xc[b] ? 0 : xc[b] % BASE; + } + + if (a) { + xc = [a].concat(xc); + ++ye; + } + + // No need to check for zero, as +x + +y != 0 && -x + -y != 0 + // ye = MAX_EXP + 1 possible + return normalise( y, xc, ye ); + }; + + + /* + * Return the number of significant digits of the value of this BigNumber. + * + * [z] {boolean|number} Whether to count integer-part trailing zeros: true, false, 1 or 0. + */ + P.precision = P.sd = function (z) { + var n, v, + x = this, + c = x.c; + + // 'precision() argument not a boolean or binary digit: {z}' + if ( z != null && z !== !!z && z !== 1 && z !== 0 ) { + if (ERRORS) raise( 13, 'argument' + notBool, z ); + if ( z != !!z ) z = null; + } + + if ( !c ) return null; + v = c.length - 1; + n = v * LOG_BASE + 1; + + if ( v = c[v] ) { + + // Subtract the number of trailing zeros of the last element. + for ( ; v % 10 == 0; v /= 10, n-- ); + + // Add the number of digits of the first element. + for ( v = c[0]; v >= 10; v /= 10, n++ ); + } + + if ( z && x.e + 1 > n ) n = x.e + 1; + + return n; + }; + + + /* + * Return a new BigNumber whose value is the value of this BigNumber rounded to a maximum of + * dp decimal places using rounding mode rm, or to 0 and ROUNDING_MODE respectively if + * omitted. + * + * [dp] {number} Decimal places. Integer, 0 to MAX inclusive. + * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive. + * + * 'round() decimal places out of range: {dp}' + * 'round() decimal places not an integer: {dp}' + * 'round() rounding mode not an integer: {rm}' + * 'round() rounding mode out of range: {rm}' + */ + P.round = function ( dp, rm ) { + var n = new BigNumber(this); + + if ( dp == null || isValidInt( dp, 0, MAX, 15 ) ) { + round( n, ~~dp + this.e + 1, rm == null || + !isValidInt( rm, 0, 8, 15, roundingMode ) ? ROUNDING_MODE : rm | 0 ); + } + + return n; + }; + + + /* + * Return a new BigNumber whose value is the value of this BigNumber shifted by k places + * (powers of 10). Shift to the right if n > 0, and to the left if n < 0. + * + * k {number} Integer, -MAX_SAFE_INTEGER to MAX_SAFE_INTEGER inclusive. + * + * If k is out of range and ERRORS is false, the result will be ±0 if k < 0, or ±Infinity + * otherwise. + * + * 'shift() argument not an integer: {k}' + * 'shift() argument out of range: {k}' + */ + P.shift = function (k) { + var n = this; + return isValidInt( k, -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER, 16, 'argument' ) + + // k < 1e+21, or truncate(k) will produce exponential notation. + ? n.times( '1e' + truncate(k) ) + : new BigNumber( n.c && n.c[0] && ( k < -MAX_SAFE_INTEGER || k > MAX_SAFE_INTEGER ) + ? n.s * ( k < 0 ? 0 : 1 / 0 ) + : n ); + }; + + + /* + * sqrt(-n) = N + * sqrt( N) = N + * sqrt(-I) = N + * sqrt( I) = I + * sqrt( 0) = 0 + * sqrt(-0) = -0 + * + * Return a new BigNumber whose value is the square root of the value of this BigNumber, + * rounded according to DECIMAL_PLACES and ROUNDING_MODE. + */ + P.squareRoot = P.sqrt = function () { + var m, n, r, rep, t, + x = this, + c = x.c, + s = x.s, + e = x.e, + dp = DECIMAL_PLACES + 4, + half = new BigNumber('0.5'); + + // Negative/NaN/Infinity/zero? + if ( s !== 1 || !c || !c[0] ) { + return new BigNumber( !s || s < 0 && ( !c || c[0] ) ? NaN : c ? x : 1 / 0 ); + } + + // Initial estimate. + s = Math.sqrt( +x ); + + // Math.sqrt underflow/overflow? + // Pass x to Math.sqrt as integer, then adjust the exponent of the result. + if ( s == 0 || s == 1 / 0 ) { + n = coeffToString(c); + if ( ( n.length + e ) % 2 == 0 ) n += '0'; + s = Math.sqrt(n); + e = bitFloor( ( e + 1 ) / 2 ) - ( e < 0 || e % 2 ); + + if ( s == 1 / 0 ) { + n = '1e' + e; + } else { + n = s.toExponential(); + n = n.slice( 0, n.indexOf('e') + 1 ) + e; + } + + r = new BigNumber(n); + } else { + r = new BigNumber( s + '' ); + } + + // Check for zero. + // r could be zero if MIN_EXP is changed after the this value was created. + // This would cause a division by zero (x/t) and hence Infinity below, which would cause + // coeffToString to throw. + if ( r.c[0] ) { + e = r.e; + s = e + dp; + if ( s < 3 ) s = 0; + + // Newton-Raphson iteration. + for ( ; ; ) { + t = r; + r = half.times( t.plus( div( x, t, dp, 1 ) ) ); + + if ( coeffToString( t.c ).slice( 0, s ) === ( n = + coeffToString( r.c ) ).slice( 0, s ) ) { + + // The exponent of r may here be one less than the final result exponent, + // e.g 0.0009999 (e-4) --> 0.001 (e-3), so adjust s so the rounding digits + // are indexed correctly. + if ( r.e < e ) --s; + n = n.slice( s - 3, s + 1 ); + + // The 4th rounding digit may be in error by -1 so if the 4 rounding digits + // are 9999 or 4999 (i.e. approaching a rounding boundary) continue the + // iteration. + if ( n == '9999' || !rep && n == '4999' ) { + + // On the first iteration only, check to see if rounding up gives the + // exact result as the nines may infinitely repeat. + if ( !rep ) { + round( t, t.e + DECIMAL_PLACES + 2, 0 ); + + if ( t.times(t).eq(x) ) { + r = t; + break; + } + } + + dp += 4; + s += 4; + rep = 1; + } else { + + // If rounding digits are null, 0{0,4} or 50{0,3}, check for exact + // result. If not, then there are further digits and m will be truthy. + if ( !+n || !+n.slice(1) && n.charAt(0) == '5' ) { + + // Truncate to the first rounding digit. + round( r, r.e + DECIMAL_PLACES + 2, 1 ); + m = !r.times(r).eq(x); + } + + break; + } + } + } + } + + return round( r, r.e + DECIMAL_PLACES + 1, ROUNDING_MODE, m ); + }; + + + /* + * n * 0 = 0 + * n * N = N + * n * I = I + * 0 * n = 0 + * 0 * 0 = 0 + * 0 * N = N + * 0 * I = N + * N * n = N + * N * 0 = N + * N * N = N + * N * I = N + * I * n = I + * I * 0 = N + * I * N = N + * I * I = I + * + * Return a new BigNumber whose value is the value of this BigNumber times the value of + * BigNumber(y, b). + */ + P.times = P.mul = function ( y, b ) { + var c, e, i, j, k, m, xcL, xlo, xhi, ycL, ylo, yhi, zc, + base, sqrtBase, + x = this, + xc = x.c, + yc = ( id = 17, y = new BigNumber( y, b ) ).c; + + // Either NaN, ±Infinity or ±0? + if ( !xc || !yc || !xc[0] || !yc[0] ) { + + // Return NaN if either is NaN, or one is 0 and the other is Infinity. + if ( !x.s || !y.s || xc && !xc[0] && !yc || yc && !yc[0] && !xc ) { + y.c = y.e = y.s = null; + } else { + y.s *= x.s; + + // Return ±Infinity if either is ±Infinity. + if ( !xc || !yc ) { + y.c = y.e = null; + + // Return ±0 if either is ±0. + } else { + y.c = [0]; + y.e = 0; + } + } + + return y; + } + + e = bitFloor( x.e / LOG_BASE ) + bitFloor( y.e / LOG_BASE ); + y.s *= x.s; + xcL = xc.length; + ycL = yc.length; + + // Ensure xc points to longer array and xcL to its length. + if ( xcL < ycL ) zc = xc, xc = yc, yc = zc, i = xcL, xcL = ycL, ycL = i; + + // Initialise the result array with zeros. + for ( i = xcL + ycL, zc = []; i--; zc.push(0) ); + + base = BASE; + sqrtBase = SQRT_BASE; + + for ( i = ycL; --i >= 0; ) { + c = 0; + ylo = yc[i] % sqrtBase; + yhi = yc[i] / sqrtBase | 0; + + for ( k = xcL, j = i + k; j > i; ) { + xlo = xc[--k] % sqrtBase; + xhi = xc[k] / sqrtBase | 0; + m = yhi * xlo + xhi * ylo; + xlo = ylo * xlo + ( ( m % sqrtBase ) * sqrtBase ) + zc[j] + c; + c = ( xlo / base | 0 ) + ( m / sqrtBase | 0 ) + yhi * xhi; + zc[j--] = xlo % base; + } + + zc[j] = c; + } + + if (c) { + ++e; + } else { + zc.splice(0, 1); + } + + return normalise( y, zc, e ); + }; + + + /* + * Return a new BigNumber whose value is the value of this BigNumber rounded to a maximum of + * sd significant digits using rounding mode rm, or ROUNDING_MODE if rm is omitted. + * + * [sd] {number} Significant digits. Integer, 1 to MAX inclusive. + * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive. + * + * 'toDigits() precision out of range: {sd}' + * 'toDigits() precision not an integer: {sd}' + * 'toDigits() rounding mode not an integer: {rm}' + * 'toDigits() rounding mode out of range: {rm}' + */ + P.toDigits = function ( sd, rm ) { + var n = new BigNumber(this); + sd = sd == null || !isValidInt( sd, 1, MAX, 18, 'precision' ) ? null : sd | 0; + rm = rm == null || !isValidInt( rm, 0, 8, 18, roundingMode ) ? ROUNDING_MODE : rm | 0; + return sd ? round( n, sd, rm ) : n; + }; + + + /* + * Return a string representing the value of this BigNumber in exponential notation and + * rounded using ROUNDING_MODE to dp fixed decimal places. + * + * [dp] {number} Decimal places. Integer, 0 to MAX inclusive. + * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive. + * + * 'toExponential() decimal places not an integer: {dp}' + * 'toExponential() decimal places out of range: {dp}' + * 'toExponential() rounding mode not an integer: {rm}' + * 'toExponential() rounding mode out of range: {rm}' + */ + P.toExponential = function ( dp, rm ) { + return format( this, + dp != null && isValidInt( dp, 0, MAX, 19 ) ? ~~dp + 1 : null, rm, 19 ); + }; + + + /* + * Return a string representing the value of this BigNumber in fixed-point notation rounding + * to dp fixed decimal places using rounding mode rm, or ROUNDING_MODE if rm is omitted. + * + * Note: as with JavaScript's number type, (-0).toFixed(0) is '0', + * but e.g. (-0.00001).toFixed(0) is '-0'. + * + * [dp] {number} Decimal places. Integer, 0 to MAX inclusive. + * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive. + * + * 'toFixed() decimal places not an integer: {dp}' + * 'toFixed() decimal places out of range: {dp}' + * 'toFixed() rounding mode not an integer: {rm}' + * 'toFixed() rounding mode out of range: {rm}' + */ + P.toFixed = function ( dp, rm ) { + return format( this, dp != null && isValidInt( dp, 0, MAX, 20 ) + ? ~~dp + this.e + 1 : null, rm, 20 ); + }; + + + /* + * Return a string representing the value of this BigNumber in fixed-point notation rounded + * using rm or ROUNDING_MODE to dp decimal places, and formatted according to the properties + * of the FORMAT object (see BigNumber.config). + * + * FORMAT = { + * decimalSeparator : '.', + * groupSeparator : ',', + * groupSize : 3, + * secondaryGroupSize : 0, + * fractionGroupSeparator : '\xA0', // non-breaking space + * fractionGroupSize : 0 + * }; + * + * [dp] {number} Decimal places. Integer, 0 to MAX inclusive. + * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive. + * + * 'toFormat() decimal places not an integer: {dp}' + * 'toFormat() decimal places out of range: {dp}' + * 'toFormat() rounding mode not an integer: {rm}' + * 'toFormat() rounding mode out of range: {rm}' + */ + P.toFormat = function ( dp, rm ) { + var str = format( this, dp != null && isValidInt( dp, 0, MAX, 21 ) + ? ~~dp + this.e + 1 : null, rm, 21 ); + + if ( this.c ) { + var i, + arr = str.split('.'), + g1 = +FORMAT.groupSize, + g2 = +FORMAT.secondaryGroupSize, + groupSeparator = FORMAT.groupSeparator, + intPart = arr[0], + fractionPart = arr[1], + isNeg = this.s < 0, + intDigits = isNeg ? intPart.slice(1) : intPart, + len = intDigits.length; + + if (g2) i = g1, g1 = g2, g2 = i, len -= i; + + if ( g1 > 0 && len > 0 ) { + i = len % g1 || g1; + intPart = intDigits.substr( 0, i ); + + for ( ; i < len; i += g1 ) { + intPart += groupSeparator + intDigits.substr( i, g1 ); + } + + if ( g2 > 0 ) intPart += groupSeparator + intDigits.slice(i); + if (isNeg) intPart = '-' + intPart; + } + + str = fractionPart + ? intPart + FORMAT.decimalSeparator + ( ( g2 = +FORMAT.fractionGroupSize ) + ? fractionPart.replace( new RegExp( '\\d{' + g2 + '}\\B', 'g' ), + '$&' + FORMAT.fractionGroupSeparator ) + : fractionPart ) + : intPart; + } + + return str; + }; + + + /* + * Return a string array representing the value of this BigNumber as a simple fraction with + * an integer numerator and an integer denominator. The denominator will be a positive + * non-zero value less than or equal to the specified maximum denominator. If a maximum + * denominator is not specified, the denominator will be the lowest value necessary to + * represent the number exactly. + * + * [md] {number|string|BigNumber} Integer >= 1 and < Infinity. The maximum denominator. + * + * 'toFraction() max denominator not an integer: {md}' + * 'toFraction() max denominator out of range: {md}' + */ + P.toFraction = function (md) { + var arr, d0, d2, e, exp, n, n0, q, s, + k = ERRORS, + x = this, + xc = x.c, + d = new BigNumber(ONE), + n1 = d0 = new BigNumber(ONE), + d1 = n0 = new BigNumber(ONE); + + if ( md != null ) { + ERRORS = false; + n = new BigNumber(md); + ERRORS = k; + + if ( !( k = n.isInt() ) || n.lt(ONE) ) { + + if (ERRORS) { + raise( 22, + 'max denominator ' + ( k ? 'out of range' : 'not an integer' ), md ); + } + + // ERRORS is false: + // If md is a finite non-integer >= 1, round it to an integer and use it. + md = !k && n.c && round( n, n.e + 1, 1 ).gte(ONE) ? n : null; + } + } + + if ( !xc ) return x.toString(); + s = coeffToString(xc); + + // Determine initial denominator. + // d is a power of 10 and the minimum max denominator that specifies the value exactly. + e = d.e = s.length - x.e - 1; + d.c[0] = POWS_TEN[ ( exp = e % LOG_BASE ) < 0 ? LOG_BASE + exp : exp ]; + md = !md || n.cmp(d) > 0 ? ( e > 0 ? d : n1 ) : n; + + exp = MAX_EXP; + MAX_EXP = 1 / 0; + n = new BigNumber(s); + + // n0 = d1 = 0 + n0.c[0] = 0; + + for ( ; ; ) { + q = div( n, d, 0, 1 ); + d2 = d0.plus( q.times(d1) ); + if ( d2.cmp(md) == 1 ) break; + d0 = d1; + d1 = d2; + n1 = n0.plus( q.times( d2 = n1 ) ); + n0 = d2; + d = n.minus( q.times( d2 = d ) ); + n = d2; + } + + d2 = div( md.minus(d0), d1, 0, 1 ); + n0 = n0.plus( d2.times(n1) ); + d0 = d0.plus( d2.times(d1) ); + n0.s = n1.s = x.s; + e *= 2; + + // Determine which fraction is closer to x, n0/d0 or n1/d1 + arr = div( n1, d1, e, ROUNDING_MODE ).minus(x).abs().cmp( + div( n0, d0, e, ROUNDING_MODE ).minus(x).abs() ) < 1 + ? [ n1.toString(), d1.toString() ] + : [ n0.toString(), d0.toString() ]; + + MAX_EXP = exp; + return arr; + }; + + + /* + * Return the value of this BigNumber converted to a number primitive. + */ + P.toNumber = function () { + return +this; + }; + + + /* + * Return a BigNumber whose value is the value of this BigNumber raised to the power n. + * If m is present, return the result modulo m. + * If n is negative round according to DECIMAL_PLACES and ROUNDING_MODE. + * If POW_PRECISION is non-zero and m is not present, round to POW_PRECISION using + * ROUNDING_MODE. + * + * The modular power operation works efficiently when x, n, and m are positive integers, + * otherwise it is equivalent to calculating x.toPower(n).modulo(m) (with POW_PRECISION 0). + * + * n {number} Integer, -MAX_SAFE_INTEGER to MAX_SAFE_INTEGER inclusive. + * [m] {number|string|BigNumber} The modulus. + * + * 'pow() exponent not an integer: {n}' + * 'pow() exponent out of range: {n}' + * + * Performs 54 loop iterations for n of 9007199254740991. + */ + P.toPower = P.pow = function ( n, m ) { + var k, y, z, + i = mathfloor( n < 0 ? -n : +n ), + x = this; + + if ( m != null ) { + id = 23; + m = new BigNumber(m); + } + + // Pass ±Infinity to Math.pow if exponent is out of range. + if ( !isValidInt( n, -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER, 23, 'exponent' ) && + ( !isFinite(n) || i > MAX_SAFE_INTEGER && ( n /= 0 ) || + parseFloat(n) != n && !( n = NaN ) ) || n == 0 ) { + k = Math.pow( +x, n ); + return new BigNumber( m ? k % m : k ); + } + + if (m) { + if ( n > 1 && x.gt(ONE) && x.isInt() && m.gt(ONE) && m.isInt() ) { + x = x.mod(m); + } else { + z = m; + + // Nullify m so only a single mod operation is performed at the end. + m = null; + } + } else if (POW_PRECISION) { + + // Truncating each coefficient array to a length of k after each multiplication + // equates to truncating significant digits to POW_PRECISION + [28, 41], + // i.e. there will be a minimum of 28 guard digits retained. + // (Using + 1.5 would give [9, 21] guard digits.) + k = mathceil( POW_PRECISION / LOG_BASE + 2 ); + } + + y = new BigNumber(ONE); + + for ( ; ; ) { + if ( i % 2 ) { + y = y.times(x); + if ( !y.c ) break; + if (k) { + if ( y.c.length > k ) y.c.length = k; + } else if (m) { + y = y.mod(m); + } + } + + i = mathfloor( i / 2 ); + if ( !i ) break; + x = x.times(x); + if (k) { + if ( x.c && x.c.length > k ) x.c.length = k; + } else if (m) { + x = x.mod(m); + } + } + + if (m) return y; + if ( n < 0 ) y = ONE.div(y); + + return z ? y.mod(z) : k ? round( y, POW_PRECISION, ROUNDING_MODE ) : y; + }; + + + /* + * Return a string representing the value of this BigNumber rounded to sd significant digits + * using rounding mode rm or ROUNDING_MODE. If sd is less than the number of digits + * necessary to represent the integer part of the value in fixed-point notation, then use + * exponential notation. + * + * [sd] {number} Significant digits. Integer, 1 to MAX inclusive. + * [rm] {number} Rounding mode. Integer, 0 to 8 inclusive. + * + * 'toPrecision() precision not an integer: {sd}' + * 'toPrecision() precision out of range: {sd}' + * 'toPrecision() rounding mode not an integer: {rm}' + * 'toPrecision() rounding mode out of range: {rm}' + */ + P.toPrecision = function ( sd, rm ) { + return format( this, sd != null && isValidInt( sd, 1, MAX, 24, 'precision' ) + ? sd | 0 : null, rm, 24 ); + }; + + + /* + * Return a string representing the value of this BigNumber in base b, or base 10 if b is + * omitted. If a base is specified, including base 10, round according to DECIMAL_PLACES and + * ROUNDING_MODE. If a base is not specified, and this BigNumber has a positive exponent + * that is equal to or greater than TO_EXP_POS, or a negative exponent equal to or less than + * TO_EXP_NEG, return exponential notation. + * + * [b] {number} Integer, 2 to 64 inclusive. + * + * 'toString() base not an integer: {b}' + * 'toString() base out of range: {b}' + */ + P.toString = function (b) { + var str, + n = this, + s = n.s, + e = n.e; + + // Infinity or NaN? + if ( e === null ) { + + if (s) { + str = 'Infinity'; + if ( s < 0 ) str = '-' + str; + } else { + str = 'NaN'; + } + } else { + str = coeffToString( n.c ); + + if ( b == null || !isValidInt( b, 2, 64, 25, 'base' ) ) { + str = e <= TO_EXP_NEG || e >= TO_EXP_POS + ? toExponential( str, e ) + : toFixedPoint( str, e ); + } else { + str = convertBase( toFixedPoint( str, e ), b | 0, 10, s ); + } + + if ( s < 0 && n.c[0] ) str = '-' + str; + } + + return str; + }; + + + /* + * Return a new BigNumber whose value is the value of this BigNumber truncated to a whole + * number. + */ + P.truncated = P.trunc = function () { + return round( new BigNumber(this), this.e + 1, 1 ); + }; + + + /* + * Return as toString, but do not accept a base argument, and include the minus sign for + * negative zero. + */ + P.valueOf = P.toJSON = function () { + var str, + n = this, + e = n.e; + + if ( e === null ) return n.toString(); + + str = coeffToString( n.c ); + + str = e <= TO_EXP_NEG || e >= TO_EXP_POS + ? toExponential( str, e ) + : toFixedPoint( str, e ); + + return n.s < 0 ? '-' + str : str; + }; + + + P.isBigNumber = true; + + if ( config != null ) BigNumber.config(config); + + return BigNumber; + } + + + // PRIVATE HELPER FUNCTIONS + + + function bitFloor(n) { + var i = n | 0; + return n > 0 || n === i ? i : i - 1; + } + + + // Return a coefficient array as a string of base 10 digits. + function coeffToString(a) { + var s, z, + i = 1, + j = a.length, + r = a[0] + ''; + + for ( ; i < j; ) { + s = a[i++] + ''; + z = LOG_BASE - s.length; + for ( ; z--; s = '0' + s ); + r += s; + } + + // Determine trailing zeros. + for ( j = r.length; r.charCodeAt(--j) === 48; ); + return r.slice( 0, j + 1 || 1 ); + } + + + // Compare the value of BigNumbers x and y. + function compare( x, y ) { + var a, b, + xc = x.c, + yc = y.c, + i = x.s, + j = y.s, + k = x.e, + l = y.e; + + // Either NaN? + if ( !i || !j ) return null; + + a = xc && !xc[0]; + b = yc && !yc[0]; + + // Either zero? + if ( a || b ) return a ? b ? 0 : -j : i; + + // Signs differ? + if ( i != j ) return i; + + a = i < 0; + b = k == l; + + // Either Infinity? + if ( !xc || !yc ) return b ? 0 : !xc ^ a ? 1 : -1; + + // Compare exponents. + if ( !b ) return k > l ^ a ? 1 : -1; + + j = ( k = xc.length ) < ( l = yc.length ) ? k : l; + + // Compare digit by digit. + for ( i = 0; i < j; i++ ) if ( xc[i] != yc[i] ) return xc[i] > yc[i] ^ a ? 1 : -1; + + // Compare lengths. + return k == l ? 0 : k > l ^ a ? 1 : -1; + } + + + /* + * Return true if n is a valid number in range, otherwise false. + * Use for argument validation when ERRORS is false. + * Note: parseInt('1e+1') == 1 but parseFloat('1e+1') == 10. + */ + function intValidatorNoErrors( n, min, max ) { + return ( n = truncate(n) ) >= min && n <= max; + } + + + function isArray(obj) { + return Object.prototype.toString.call(obj) == '[object Array]'; + } + + + /* + * Convert string of baseIn to an array of numbers of baseOut. + * Eg. convertBase('255', 10, 16) returns [15, 15]. + * Eg. convertBase('ff', 16, 10) returns [2, 5, 5]. + */ + function toBaseOut( str, baseIn, baseOut ) { + var j, + arr = [0], + arrL, + i = 0, + len = str.length; + + for ( ; i < len; ) { + for ( arrL = arr.length; arrL--; arr[arrL] *= baseIn ); + arr[ j = 0 ] += ALPHABET.indexOf( str.charAt( i++ ) ); + + for ( ; j < arr.length; j++ ) { + + if ( arr[j] > baseOut - 1 ) { + if ( arr[j + 1] == null ) arr[j + 1] = 0; + arr[j + 1] += arr[j] / baseOut | 0; + arr[j] %= baseOut; + } + } + } + + return arr.reverse(); + } + + + function toExponential( str, e ) { + return ( str.length > 1 ? str.charAt(0) + '.' + str.slice(1) : str ) + + ( e < 0 ? 'e' : 'e+' ) + e; + } + + + function toFixedPoint( str, e ) { + var len, z; + + // Negative exponent? + if ( e < 0 ) { + + // Prepend zeros. + for ( z = '0.'; ++e; z += '0' ); + str = z + str; + + // Positive exponent + } else { + len = str.length; + + // Append zeros. + if ( ++e > len ) { + for ( z = '0', e -= len; --e; z += '0' ); + str += z; + } else if ( e < len ) { + str = str.slice( 0, e ) + '.' + str.slice(e); + } + } + + return str; + } + + + function truncate(n) { + n = parseFloat(n); + return n < 0 ? mathceil(n) : mathfloor(n); + } + + + // EXPORT + + + BigNumber = constructorFactory(); + BigNumber['default'] = BigNumber.BigNumber = BigNumber; + + + // AMD. + if ( typeof define == 'function' && define.amd ) { + define( function () { return BigNumber; } ); + + // Node.js and other environments that support module.exports. + } else if ( typeof module != 'undefined' && module.exports ) { + module.exports = BigNumber; + + // Browser. + } else { + if ( !globalObj ) globalObj = typeof self != 'undefined' ? self : Function('return this')(); + globalObj.BigNumber = BigNumber; + } +})(this); + +},{}],66:[function(require,module,exports){ +var aes = require('browserify-aes') +var assert = require('assert') +var Buffer = require('safe-buffer').Buffer +var bs58check = require('bs58check') +var createHash = require('create-hash') +var scrypt = require('scryptsy') +var xor = require('buffer-xor/inplace') + +var ecurve = require('ecurve') +var curve = ecurve.getCurveByName('secp256k1') + +var BigInteger = require('bigi') + +// constants +var SCRYPT_PARAMS = { + N: 16384, // specified by BIP38 + r: 8, + p: 8 +} +var NULL = Buffer.alloc(0) + +function hash160 (buffer) { + return createHash('rmd160').update( + createHash('sha256').update(buffer).digest() + ).digest() +} + +function hash256 (buffer) { + return createHash('sha256').update( + createHash('sha256').update(buffer).digest() + ).digest() +} + +function getAddress (d, compressed) { + var Q = curve.G.multiply(d).getEncoded(compressed) + var hash = hash160(Q) + var payload = Buffer.allocUnsafe(21) + payload.writeUInt8(0x00, 0) // XXX TODO FIXME bitcoin only??? damn you BIP38 + hash.copy(payload, 1) + + return bs58check.encode(payload) +} + +function encryptRaw (buffer, compressed, passphrase, progressCallback, scryptParams) { + if (buffer.length !== 32) throw new Error('Invalid private key length') + scryptParams = scryptParams || SCRYPT_PARAMS + + var d = BigInteger.fromBuffer(buffer) + var address = getAddress(d, compressed) + var secret = Buffer.from(passphrase, 'utf8') + var salt = hash256(address).slice(0, 4) + + var N = scryptParams.N + var r = scryptParams.r + var p = scryptParams.p + + var scryptBuf = scrypt(secret, salt, N, r, p, 64, progressCallback) + var derivedHalf1 = scryptBuf.slice(0, 32) + var derivedHalf2 = scryptBuf.slice(32, 64) + + var xorBuf = xor(derivedHalf1, buffer) + var cipher = aes.createCipheriv('aes-256-ecb', derivedHalf2, NULL) + cipher.setAutoPadding(false) + cipher.end(xorBuf) + + var cipherText = cipher.read() + + // 0x01 | 0x42 | flagByte | salt (4) | cipherText (32) + var result = Buffer.allocUnsafe(7 + 32) + result.writeUInt8(0x01, 0) + result.writeUInt8(0x42, 1) + result.writeUInt8(compressed ? 0xe0 : 0xc0, 2) + salt.copy(result, 3) + cipherText.copy(result, 7) + + return result +} + +function encrypt (buffer, compressed, passphrase, progressCallback, scryptParams) { + return bs58check.encode(encryptRaw(buffer, compressed, passphrase, progressCallback, scryptParams)) +} + +// some of the techniques borrowed from: https://github.com/pointbiz/bitaddress.org +function decryptRaw (buffer, passphrase, progressCallback, scryptParams) { + // 39 bytes: 2 bytes prefix, 37 bytes payload + if (buffer.length !== 39) throw new Error('Invalid BIP38 data length') + if (buffer.readUInt8(0) !== 0x01) throw new Error('Invalid BIP38 prefix') + scryptParams = scryptParams || SCRYPT_PARAMS + + // check if BIP38 EC multiply + var type = buffer.readUInt8(1) + if (type === 0x43) return decryptECMult(buffer, passphrase, progressCallback, scryptParams) + if (type !== 0x42) throw new Error('Invalid BIP38 type') + + passphrase = Buffer.from(passphrase, 'utf8') + + var flagByte = buffer.readUInt8(2) + var compressed = flagByte === 0xe0 + if (!compressed && flagByte !== 0xc0) throw new Error('Invalid BIP38 compression flag') + + var N = scryptParams.N + var r = scryptParams.r + var p = scryptParams.p + + var salt = buffer.slice(3, 7) + var scryptBuf = scrypt(passphrase, salt, N, r, p, 64, progressCallback) + var derivedHalf1 = scryptBuf.slice(0, 32) + var derivedHalf2 = scryptBuf.slice(32, 64) + + var privKeyBuf = buffer.slice(7, 7 + 32) + var decipher = aes.createDecipheriv('aes-256-ecb', derivedHalf2, NULL) + decipher.setAutoPadding(false) + decipher.end(privKeyBuf) + + var plainText = decipher.read() + var privateKey = xor(derivedHalf1, plainText) + + // verify salt matches address + var d = BigInteger.fromBuffer(privateKey) + var address = getAddress(d, compressed) + var checksum = hash256(address).slice(0, 4) + assert.deepEqual(salt, checksum) + + return { + privateKey: privateKey, + compressed: compressed + } +} + +function decrypt (string, passphrase, progressCallback, scryptParams) { + return decryptRaw(bs58check.decode(string), passphrase, progressCallback, scryptParams) +} + +function decryptECMult (buffer, passphrase, progressCallback, scryptParams) { + passphrase = Buffer.from(passphrase, 'utf8') + buffer = buffer.slice(1) // FIXME: we can avoid this + scryptParams = scryptParams || SCRYPT_PARAMS + + var flag = buffer.readUInt8(1) + var compressed = (flag & 0x20) !== 0 + var hasLotSeq = (flag & 0x04) !== 0 + + assert.equal((flag & 0x24), flag, 'Invalid private key.') + + var addressHash = buffer.slice(2, 6) + var ownerEntropy = buffer.slice(6, 14) + var ownerSalt + + // 4 bytes ownerSalt if 4 bytes lot/sequence + if (hasLotSeq) { + ownerSalt = ownerEntropy.slice(0, 4) + + // else, 8 bytes ownerSalt + } else { + ownerSalt = ownerEntropy + } + + var encryptedPart1 = buffer.slice(14, 22) // First 8 bytes + var encryptedPart2 = buffer.slice(22, 38) // 16 bytes + + var N = scryptParams.N + var r = scryptParams.r + var p = scryptParams.p + var preFactor = scrypt(passphrase, ownerSalt, N, r, p, 32, progressCallback) + + var passFactor + if (hasLotSeq) { + var hashTarget = Buffer.concat([preFactor, ownerEntropy]) + passFactor = hash256(hashTarget) + } else { + passFactor = preFactor + } + + var passInt = BigInteger.fromBuffer(passFactor) + var passPoint = curve.G.multiply(passInt).getEncoded(true) + + var seedBPass = scrypt(passPoint, Buffer.concat([addressHash, ownerEntropy]), 1024, 1, 1, 64) + var derivedHalf1 = seedBPass.slice(0, 32) + var derivedHalf2 = seedBPass.slice(32, 64) + + var decipher = aes.createDecipheriv('aes-256-ecb', derivedHalf2, Buffer.alloc(0)) + decipher.setAutoPadding(false) + decipher.end(encryptedPart2) + + var decryptedPart2 = decipher.read() + var tmp = xor(decryptedPart2, derivedHalf1.slice(16, 32)) + var seedBPart2 = tmp.slice(8, 16) + + var decipher2 = aes.createDecipheriv('aes-256-ecb', derivedHalf2, Buffer.alloc(0)) + decipher2.setAutoPadding(false) + decipher2.write(encryptedPart1) // first 8 bytes + decipher2.end(tmp.slice(0, 8)) // last 8 bytes + + var seedBPart1 = xor(decipher2.read(), derivedHalf1.slice(0, 16)) + var seedB = Buffer.concat([seedBPart1, seedBPart2], 24) + var factorB = BigInteger.fromBuffer(hash256(seedB)) + + // d = passFactor * factorB (mod n) + var d = passInt.multiply(factorB).mod(curve.n) + + return { + privateKey: d.toBuffer(32), + compressed: compressed + } +} + +function verify (string) { + var decoded = bs58check.decodeUnsafe(string) + if (!decoded) return false + + if (decoded.length !== 39) return false + if (decoded.readUInt8(0) !== 0x01) return false + + var type = decoded.readUInt8(1) + var flag = decoded.readUInt8(2) + + // encrypted WIF + if (type === 0x42) { + if (flag !== 0xc0 && flag !== 0xe0) return false + + // EC mult + } else if (type === 0x43) { + if ((flag & ~0x24)) return false + } else { + return false + } + + return true +} + +module.exports = { + decrypt: decrypt, + decryptECMult: decryptECMult, + decryptRaw: decryptRaw, + encrypt: encrypt, + encryptRaw: encryptRaw, + verify: verify +} + +},{"assert":26,"bigi":63,"browserify-aes":113,"bs58check":140,"buffer-xor/inplace":145,"create-hash":239,"ecurve":257,"safe-buffer":742,"scryptsy":743}],67:[function(require,module,exports){ +var aes = require('browserify-aes') +var assert = require('assert') +var Buffer = require('safe-buffer').Buffer +var bs58check = require('bs58check') +var bs58grscheck = require('bs58grscheck') +var createHash = require('create-hash') +var scrypt = require('scryptsy') +var xor = require('buffer-xor/inplace') + +var ecurve = require('ecurve') +var curve = ecurve.getCurveByName('secp256k1') + +var BigInteger = require('bigi') + +// constants +var SCRYPT_PARAMS = { + N: 16384, // specified by BIP38 + r: 8, + p: 8 +} +var NULL = Buffer.alloc(0) + +function hash160 (buffer) { + return createHash('rmd160').update( + createHash('sha256').update(buffer).digest() + ).digest() +} + +function hash256 (buffer) { + return createHash('sha256').update( + createHash('sha256').update(buffer).digest() + ).digest() +} + +function getAddress (d, compressed) { + var Q = curve.G.multiply(d).getEncoded(compressed) + var hash = hash160(Q) + var payload = Buffer.allocUnsafe(21) + payload.writeUInt8(0x24, 0) // XXX TODO FIXME bitcoin only??? damn you BIP38 + hash.copy(payload, 1) + + return bs58grscheck.encode(payload) +} + +function encryptRaw (buffer, compressed, passphrase, progressCallback, scryptParams) { + if (buffer.length !== 32) throw new Error('Invalid private key length') + scryptParams = scryptParams || SCRYPT_PARAMS + + var d = BigInteger.fromBuffer(buffer) + var address = getAddress(d, compressed) + var secret = Buffer.from(passphrase, 'utf8') + var salt = hash256(address).slice(0, 4) + + var N = scryptParams.N + var r = scryptParams.r + var p = scryptParams.p + + var scryptBuf = scrypt(secret, salt, N, r, p, 64, progressCallback) + var derivedHalf1 = scryptBuf.slice(0, 32) + var derivedHalf2 = scryptBuf.slice(32, 64) + + var xorBuf = xor(derivedHalf1, buffer) + var cipher = aes.createCipheriv('aes-256-ecb', derivedHalf2, NULL) + cipher.setAutoPadding(false) + cipher.end(xorBuf) + + var cipherText = cipher.read() + + // 0x01 | 0x42 | flagByte | salt (4) | cipherText (32) + var result = Buffer.allocUnsafe(7 + 32) + result.writeUInt8(0x01, 0) + result.writeUInt8(0x42, 1) + result.writeUInt8(compressed ? 0xe0 : 0xc0, 2) + salt.copy(result, 3) + cipherText.copy(result, 7) + + return result +} + +function encrypt (buffer, compressed, passphrase, progressCallback, scryptParams) { + return bs58check.encode(encryptRaw(buffer, compressed, passphrase, progressCallback, scryptParams)) +} + +// some of the techniques borrowed from: https://github.com/pointbiz/bitaddress.org +function decryptRaw (buffer, passphrase, progressCallback, scryptParams) { + // 39 bytes: 2 bytes prefix, 37 bytes payload + if (buffer.length !== 39) throw new Error('Invalid BIP38 data length') + if (buffer.readUInt8(0) !== 0x01) throw new Error('Invalid BIP38 prefix') + scryptParams = scryptParams || SCRYPT_PARAMS + + // check if BIP38 EC multiply + var type = buffer.readUInt8(1) + if (type === 0x43) return decryptECMult(buffer, passphrase, progressCallback, scryptParams) + if (type !== 0x42) throw new Error('Invalid BIP38 type') + + passphrase = Buffer.from(passphrase, 'utf8') + + var flagByte = buffer.readUInt8(2) + var compressed = flagByte === 0xe0 + if (!compressed && flagByte !== 0xc0) throw new Error('Invalid BIP38 compression flag') + + var N = scryptParams.N + var r = scryptParams.r + var p = scryptParams.p + + var salt = buffer.slice(3, 7) + var scryptBuf = scrypt(passphrase, salt, N, r, p, 64, progressCallback) + var derivedHalf1 = scryptBuf.slice(0, 32) + var derivedHalf2 = scryptBuf.slice(32, 64) + + var privKeyBuf = buffer.slice(7, 7 + 32) + var decipher = aes.createDecipheriv('aes-256-ecb', derivedHalf2, NULL) + decipher.setAutoPadding(false) + decipher.end(privKeyBuf) + + var plainText = decipher.read() + var privateKey = xor(derivedHalf1, plainText) + + // verify salt matches address + var d = BigInteger.fromBuffer(privateKey) + var address = getAddress(d, compressed) + var checksum = hash256(address).slice(0, 4) + assert.deepEqual(salt, checksum) + + return { + privateKey: privateKey, + compressed: compressed + } +} + +function decrypt (string, passphrase, progressCallback, scryptParams) { + return decryptRaw(bs58check.decode(string), passphrase, progressCallback, scryptParams) +} + +function decryptECMult (buffer, passphrase, progressCallback, scryptParams) { + passphrase = Buffer.from(passphrase, 'utf8') + buffer = buffer.slice(1) // FIXME: we can avoid this + scryptParams = scryptParams || SCRYPT_PARAMS + + var flag = buffer.readUInt8(1) + var compressed = (flag & 0x20) !== 0 + var hasLotSeq = (flag & 0x04) !== 0 + + assert.equal((flag & 0x24), flag, 'Invalid private key.') + + var addressHash = buffer.slice(2, 6) + var ownerEntropy = buffer.slice(6, 14) + var ownerSalt + + // 4 bytes ownerSalt if 4 bytes lot/sequence + if (hasLotSeq) { + ownerSalt = ownerEntropy.slice(0, 4) + + // else, 8 bytes ownerSalt + } else { + ownerSalt = ownerEntropy + } + + var encryptedPart1 = buffer.slice(14, 22) // First 8 bytes + var encryptedPart2 = buffer.slice(22, 38) // 16 bytes + + var N = scryptParams.N + var r = scryptParams.r + var p = scryptParams.p + var preFactor = scrypt(passphrase, ownerSalt, N, r, p, 32, progressCallback) + + var passFactor + if (hasLotSeq) { + var hashTarget = Buffer.concat([preFactor, ownerEntropy]) + passFactor = hash256(hashTarget) + } else { + passFactor = preFactor + } + + var passInt = BigInteger.fromBuffer(passFactor) + var passPoint = curve.G.multiply(passInt).getEncoded(true) + + var seedBPass = scrypt(passPoint, Buffer.concat([addressHash, ownerEntropy]), 1024, 1, 1, 64) + var derivedHalf1 = seedBPass.slice(0, 32) + var derivedHalf2 = seedBPass.slice(32, 64) + + var decipher = aes.createDecipheriv('aes-256-ecb', derivedHalf2, Buffer.alloc(0)) + decipher.setAutoPadding(false) + decipher.end(encryptedPart2) + + var decryptedPart2 = decipher.read() + var tmp = xor(decryptedPart2, derivedHalf1.slice(16, 32)) + var seedBPart2 = tmp.slice(8, 16) + + var decipher2 = aes.createDecipheriv('aes-256-ecb', derivedHalf2, Buffer.alloc(0)) + decipher2.setAutoPadding(false) + decipher2.write(encryptedPart1) // first 8 bytes + decipher2.end(tmp.slice(0, 8)) // last 8 bytes + + var seedBPart1 = xor(decipher2.read(), derivedHalf1.slice(0, 16)) + var seedB = Buffer.concat([seedBPart1, seedBPart2], 24) + var factorB = BigInteger.fromBuffer(hash256(seedB)) + + // d = passFactor * factorB (mod n) + var d = passInt.multiply(factorB).mod(curve.n) + + return { + privateKey: d.toBuffer(32), + compressed: compressed + } +} + +function verify (string) { + var decoded = bs58grscheck.decodeUnsafe(string) + if (!decoded) return false + + if (decoded.length !== 39) return false + if (decoded.readUInt8(0) !== 0x01) return false + + var type = decoded.readUInt8(1) + var flag = decoded.readUInt8(2) + + // encrypted WIF + if (type === 0x42) { + if (flag !== 0xc0 && flag !== 0xe0) return false + + // EC mult + } else if (type === 0x43) { + if ((flag & ~0x24)) return false + } else { + return false + } + + return true +} + +module.exports = { + decrypt: decrypt, + decryptECMult: decryptECMult, + decryptRaw: decryptRaw, + encrypt: encrypt, + encryptRaw: encryptRaw, + verify: verify +} + +},{"assert":26,"bigi":63,"browserify-aes":113,"bs58check":140,"bs58grscheck":142,"buffer-xor/inplace":145,"create-hash":239,"ecurve":257,"safe-buffer":742,"scryptsy":743}],68:[function(require,module,exports){ +// Reference https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki +// Format: 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S] +// NOTE: SIGHASH byte ignored AND restricted, truncate before use + +var Buffer = require('safe-buffer').Buffer + +function check (buffer) { + if (buffer.length < 8) return false + if (buffer.length > 72) return false + if (buffer[0] !== 0x30) return false + if (buffer[1] !== buffer.length - 2) return false + if (buffer[2] !== 0x02) return false + + var lenR = buffer[3] + if (lenR === 0) return false + if (5 + lenR >= buffer.length) return false + if (buffer[4 + lenR] !== 0x02) return false + + var lenS = buffer[5 + lenR] + if (lenS === 0) return false + if ((6 + lenR + lenS) !== buffer.length) return false + + if (buffer[4] & 0x80) return false + if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) return false + + if (buffer[lenR + 6] & 0x80) return false + if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) return false + return true +} + +function decode (buffer) { + if (buffer.length < 8) throw new Error('DER sequence length is too short') + if (buffer.length > 72) throw new Error('DER sequence length is too long') + if (buffer[0] !== 0x30) throw new Error('Expected DER sequence') + if (buffer[1] !== buffer.length - 2) throw new Error('DER sequence length is invalid') + if (buffer[2] !== 0x02) throw new Error('Expected DER integer') + + var lenR = buffer[3] + if (lenR === 0) throw new Error('R length is zero') + if (5 + lenR >= buffer.length) throw new Error('R length is too long') + if (buffer[4 + lenR] !== 0x02) throw new Error('Expected DER integer (2)') + + var lenS = buffer[5 + lenR] + if (lenS === 0) throw new Error('S length is zero') + if ((6 + lenR + lenS) !== buffer.length) throw new Error('S length is invalid') + + if (buffer[4] & 0x80) throw new Error('R value is negative') + if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) throw new Error('R value excessively padded') + + if (buffer[lenR + 6] & 0x80) throw new Error('S value is negative') + if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) throw new Error('S value excessively padded') + + // non-BIP66 - extract R, S values + return { + r: buffer.slice(4, 4 + lenR), + s: buffer.slice(6 + lenR) + } +} + +/* + * Expects r and s to be positive DER integers. + * + * The DER format uses the most significant bit as a sign bit (& 0x80). + * If the significant bit is set AND the integer is positive, a 0x00 is prepended. + * + * Examples: + * + * 0 => 0x00 + * 1 => 0x01 + * -1 => 0xff + * 127 => 0x7f + * -127 => 0x81 + * 128 => 0x0080 + * -128 => 0x80 + * 255 => 0x00ff + * -255 => 0xff01 + * 16300 => 0x3fac + * -16300 => 0xc054 + * 62300 => 0x00f35c + * -62300 => 0xff0ca4 +*/ +function encode (r, s) { + var lenR = r.length + var lenS = s.length + if (lenR === 0) throw new Error('R length is zero') + if (lenS === 0) throw new Error('S length is zero') + if (lenR > 33) throw new Error('R length is too long') + if (lenS > 33) throw new Error('S length is too long') + if (r[0] & 0x80) throw new Error('R value is negative') + if (s[0] & 0x80) throw new Error('S value is negative') + if (lenR > 1 && (r[0] === 0x00) && !(r[1] & 0x80)) throw new Error('R value excessively padded') + if (lenS > 1 && (s[0] === 0x00) && !(s[1] & 0x80)) throw new Error('S value excessively padded') + + var signature = Buffer.allocUnsafe(6 + lenR + lenS) + + // 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S] + signature[0] = 0x30 + signature[1] = signature.length - 2 + signature[2] = 0x02 + signature[3] = r.length + r.copy(signature, 4) + signature[4 + lenR] = 0x02 + signature[5 + lenR] = s.length + s.copy(signature, 6 + lenR) + + return signature +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"safe-buffer":742}],69:[function(require,module,exports){ +module.exports={ + "OP_FALSE": 0, + "OP_0": 0, + "OP_PUSHDATA1": 76, + "OP_PUSHDATA2": 77, + "OP_PUSHDATA4": 78, + "OP_1NEGATE": 79, + "OP_RESERVED": 80, + "OP_TRUE": 81, + "OP_1": 81, + "OP_2": 82, + "OP_3": 83, + "OP_4": 84, + "OP_5": 85, + "OP_6": 86, + "OP_7": 87, + "OP_8": 88, + "OP_9": 89, + "OP_10": 90, + "OP_11": 91, + "OP_12": 92, + "OP_13": 93, + "OP_14": 94, + "OP_15": 95, + "OP_16": 96, + + "OP_NOP": 97, + "OP_VER": 98, + "OP_IF": 99, + "OP_NOTIF": 100, + "OP_VERIF": 101, + "OP_VERNOTIF": 102, + "OP_ELSE": 103, + "OP_ENDIF": 104, + "OP_VERIFY": 105, + "OP_RETURN": 106, + + "OP_TOALTSTACK": 107, + "OP_FROMALTSTACK": 108, + "OP_2DROP": 109, + "OP_2DUP": 110, + "OP_3DUP": 111, + "OP_2OVER": 112, + "OP_2ROT": 113, + "OP_2SWAP": 114, + "OP_IFDUP": 115, + "OP_DEPTH": 116, + "OP_DROP": 117, + "OP_DUP": 118, + "OP_NIP": 119, + "OP_OVER": 120, + "OP_PICK": 121, + "OP_ROLL": 122, + "OP_ROT": 123, + "OP_SWAP": 124, + "OP_TUCK": 125, + + "OP_CAT": 126, + "OP_SUBSTR": 127, + "OP_LEFT": 128, + "OP_RIGHT": 129, + "OP_SIZE": 130, + + "OP_INVERT": 131, + "OP_AND": 132, + "OP_OR": 133, + "OP_XOR": 134, + "OP_EQUAL": 135, + "OP_EQUALVERIFY": 136, + "OP_RESERVED1": 137, + "OP_RESERVED2": 138, + + "OP_1ADD": 139, + "OP_1SUB": 140, + "OP_2MUL": 141, + "OP_2DIV": 142, + "OP_NEGATE": 143, + "OP_ABS": 144, + "OP_NOT": 145, + "OP_0NOTEQUAL": 146, + "OP_ADD": 147, + "OP_SUB": 148, + "OP_MUL": 149, + "OP_DIV": 150, + "OP_MOD": 151, + "OP_LSHIFT": 152, + "OP_RSHIFT": 153, + + "OP_BOOLAND": 154, + "OP_BOOLOR": 155, + "OP_NUMEQUAL": 156, + "OP_NUMEQUALVERIFY": 157, + "OP_NUMNOTEQUAL": 158, + "OP_LESSTHAN": 159, + "OP_GREATERTHAN": 160, + "OP_LESSTHANOREQUAL": 161, + "OP_GREATERTHANOREQUAL": 162, + "OP_MIN": 163, + "OP_MAX": 164, + + "OP_WITHIN": 165, + + "OP_RIPEMD160": 166, + "OP_SHA1": 167, + "OP_SHA256": 168, + "OP_HASH160": 169, + "OP_HASH256": 170, + "OP_CODESEPARATOR": 171, + "OP_CHECKSIG": 172, + "OP_CHECKSIGVERIFY": 173, + "OP_CHECKMULTISIG": 174, + "OP_CHECKMULTISIGVERIFY": 175, + + "OP_NOP1": 176, + + "OP_NOP2": 177, + "OP_CHECKLOCKTIMEVERIFY": 177, + + "OP_NOP3": 178, + "OP_CHECKSEQUENCEVERIFY": 178, + + "OP_NOP4": 179, + "OP_NOP5": 180, + "OP_NOP6": 181, + "OP_NOP7": 182, + "OP_NOP8": 183, + "OP_NOP9": 184, + "OP_NOP10": 185, + + "OP_PUBKEYHASH": 253, + "OP_PUBKEY": 254, + "OP_INVALIDOPCODE": 255 +} + +},{}],70:[function(require,module,exports){ +var OPS = require('./index.json') + +var map = {} +for (var op in OPS) { + var code = OPS[op] + map[code] = op +} + +module.exports = map + +},{"./index.json":69}],71:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var bech32 = require('bech32') +var bs58check = require('bs58check') +var bscript = require('./script') +var btemplates = require('./templates') +var networks = require('./networks') +var typeforce = require('typeforce') +var types = require('./types') + +function fromBase58Check (address) { + var payload = bs58check.decode(address) + + // TODO: 4.0.0, move to "toOutputScript" + if (payload.length < 21) throw new TypeError(address + ' is too short') + if (payload.length > 21) throw new TypeError(address + ' is too long') + + var version = payload.readUInt8(0) + var hash = payload.slice(1) + + return { version: version, hash: hash } +} + +function fromBech32 (address) { + var result = bech32.decode(address) + var data = bech32.fromWords(result.words.slice(1)) + + return { + version: result.words[0], + prefix: result.prefix, + data: Buffer.from(data) + } +} + +function toBase58Check (hash, version) { + // see https://github.com/iancoleman/bip39/pull/212 + if (version < 256){ + typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments) + + var payload = Buffer.allocUnsafe(21) + payload.writeUInt8(version, 0) + hash.copy(payload, 1) + + return bs58check.encode(payload) + } + else{ + typeforce(types.tuple(types.Hash160bit, types.UInt16), arguments) + + var payload = Buffer.allocUnsafe(22) + payload.writeUInt16BE(version, 0) + hash.copy(payload, 2) + + return bs58check.encode(payload) + } +} + +function toBech32 (data, version, prefix) { + var words = bech32.toWords(data) + words.unshift(version) + + return bech32.encode(prefix, words) +} + +function fromOutputScript (outputScript, network) { + network = network || networks.bitcoin + + if (btemplates.pubKeyHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(3, 23), network.pubKeyHash) + if (btemplates.scriptHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(2, 22), network.scriptHash) + if (btemplates.witnessPubKeyHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 22), 0, network.bech32) + if (btemplates.witnessScriptHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 34), 0, network.bech32) + + throw new Error(bscript.toASM(outputScript) + ' has no matching Address') +} + +function toOutputScript (address, network) { + network = network || networks.bitcoin + + var decode + try { + decode = fromBase58Check(address) + } catch (e) {} + + if (decode) { + if (decode.version === network.pubKeyHash) return btemplates.pubKeyHash.output.encode(decode.hash) + if (decode.version === network.scriptHash) return btemplates.scriptHash.output.encode(decode.hash) + } else { + try { + decode = fromBech32(address) + } catch (e) {} + + if (decode) { + if (decode.prefix !== network.bech32) throw new Error(address + ' has an invalid prefix') + if (decode.version === 0) { + if (decode.data.length === 20) return btemplates.witnessPubKeyHash.output.encode(decode.data) + if (decode.data.length === 32) return btemplates.witnessScriptHash.output.encode(decode.data) + } + } + } + + throw new Error(address + ' has no matching Script') +} + +module.exports = { + fromBase58Check: fromBase58Check, + fromBech32: fromBech32, + fromOutputScript: fromOutputScript, + toBase58Check: toBase58Check, + toBech32: toBech32, + toOutputScript: toOutputScript +} + +},{"./networks":80,"./script":81,"./templates":83,"./types":107,"bech32":59,"bs58check":140,"safe-buffer":742,"typeforce":816}],72:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var bcrypto = require('./crypto') +var fastMerkleRoot = require('merkle-lib/fastRoot') +var typeforce = require('typeforce') +var types = require('./types') +var varuint = require('varuint-bitcoin') + +var Transaction = require('./transaction') + +function Block () { + this.version = 1 + this.prevHash = null + this.merkleRoot = null + this.timestamp = 0 + this.bits = 0 + this.nonce = 0 +} + +Block.fromBuffer = function (buffer) { + if (buffer.length < 80) throw new Error('Buffer too small (< 80 bytes)') + + var offset = 0 + function readSlice (n) { + offset += n + return buffer.slice(offset - n, offset) + } + + function readUInt32 () { + var i = buffer.readUInt32LE(offset) + offset += 4 + return i + } + + function readInt32 () { + var i = buffer.readInt32LE(offset) + offset += 4 + return i + } + + var block = new Block() + block.version = readInt32() + block.prevHash = readSlice(32) + block.merkleRoot = readSlice(32) + block.timestamp = readUInt32() + block.bits = readUInt32() + block.nonce = readUInt32() + + if (buffer.length === 80) return block + + function readVarInt () { + var vi = varuint.decode(buffer, offset) + offset += varuint.decode.bytes + return vi + } + + function readTransaction () { + var tx = Transaction.fromBuffer(buffer.slice(offset), true) + offset += tx.byteLength() + return tx + } + + var nTransactions = readVarInt() + block.transactions = [] + + for (var i = 0; i < nTransactions; ++i) { + var tx = readTransaction() + block.transactions.push(tx) + } + + return block +} + +Block.prototype.byteLength = function (headersOnly) { + if (headersOnly || !this.transactions) return 80 + + return 80 + varuint.encodingLength(this.transactions.length) + this.transactions.reduce(function (a, x) { + return a + x.byteLength() + }, 0) +} + +Block.fromHex = function (hex) { + return Block.fromBuffer(Buffer.from(hex, 'hex')) +} + +Block.prototype.getHash = function () { + return bcrypto.hash256(this.toBuffer(true)) +} + +Block.prototype.getId = function () { + return this.getHash().reverse().toString('hex') +} + +Block.prototype.getUTCDate = function () { + var date = new Date(0) // epoch + date.setUTCSeconds(this.timestamp) + + return date +} + +// TODO: buffer, offset compatibility +Block.prototype.toBuffer = function (headersOnly) { + var buffer = Buffer.allocUnsafe(this.byteLength(headersOnly)) + + var offset = 0 + function writeSlice (slice) { + slice.copy(buffer, offset) + offset += slice.length + } + + function writeInt32 (i) { + buffer.writeInt32LE(i, offset) + offset += 4 + } + function writeUInt32 (i) { + buffer.writeUInt32LE(i, offset) + offset += 4 + } + + writeInt32(this.version) + writeSlice(this.prevHash) + writeSlice(this.merkleRoot) + writeUInt32(this.timestamp) + writeUInt32(this.bits) + writeUInt32(this.nonce) + + if (headersOnly || !this.transactions) return buffer + + varuint.encode(this.transactions.length, buffer, offset) + offset += varuint.encode.bytes + + this.transactions.forEach(function (tx) { + var txSize = tx.byteLength() // TODO: extract from toBuffer? + tx.toBuffer(buffer, offset) + offset += txSize + }) + + return buffer +} + +Block.prototype.toHex = function (headersOnly) { + return this.toBuffer(headersOnly).toString('hex') +} + +Block.calculateTarget = function (bits) { + var exponent = ((bits & 0xff000000) >> 24) - 3 + var mantissa = bits & 0x007fffff + var target = Buffer.alloc(32, 0) + target.writeUInt32BE(mantissa, 28 - exponent) + return target +} + +Block.calculateMerkleRoot = function (transactions) { + typeforce([{ getHash: types.Function }], transactions) + if (transactions.length === 0) throw TypeError('Cannot compute merkle root for zero transactions') + + var hashes = transactions.map(function (transaction) { + return transaction.getHash() + }) + + return fastMerkleRoot(hashes, bcrypto.hash256) +} + +Block.prototype.checkMerkleRoot = function () { + if (!this.transactions) return false + + var actualMerkleRoot = Block.calculateMerkleRoot(this.transactions) + return this.merkleRoot.compare(actualMerkleRoot) === 0 +} + +Block.prototype.checkProofOfWork = function () { + var hash = this.getHash().reverse() + var target = Block.calculateTarget(this.bits) + + return hash.compare(target) <= 0 +} + +module.exports = Block + +},{"./crypto":74,"./transaction":105,"./types":107,"merkle-lib/fastRoot":638,"safe-buffer":742,"typeforce":816,"varuint-bitcoin":830}],73:[function(require,module,exports){ +var pushdata = require('pushdata-bitcoin') +var varuint = require('varuint-bitcoin') + +// https://github.com/feross/buffer/blob/master/index.js#L1127 +function verifuint (value, max) { + if (typeof value !== 'number') throw new Error('cannot write a non-number as a number') + if (value < 0) throw new Error('specified a negative value for writing an unsigned value') + if (value > max) throw new Error('RangeError: value out of range') + if (Math.floor(value) !== value) throw new Error('value has a fractional component') +} + +function readUInt64LE (buffer, offset) { + var a = buffer.readUInt32LE(offset) + var b = buffer.readUInt32LE(offset + 4) + b *= 0x100000000 + + verifuint(b + a, 0x001fffffffffffff) + + return b + a +} + +function writeUInt64LE (buffer, value, offset) { + verifuint(value, 0x001fffffffffffff) + + buffer.writeInt32LE(value & -1, offset) + buffer.writeUInt32LE(Math.floor(value / 0x100000000), offset + 4) + return offset + 8 +} + +// TODO: remove in 4.0.0? +function readVarInt (buffer, offset) { + var result = varuint.decode(buffer, offset) + + return { + number: result, + size: varuint.decode.bytes + } +} + +// TODO: remove in 4.0.0? +function writeVarInt (buffer, number, offset) { + varuint.encode(number, buffer, offset) + return varuint.encode.bytes +} + +module.exports = { + pushDataSize: pushdata.encodingLength, + readPushDataInt: pushdata.decode, + readUInt64LE: readUInt64LE, + readVarInt: readVarInt, + varIntBuffer: varuint.encode, + varIntSize: varuint.encodingLength, + writePushDataInt: pushdata.encode, + writeUInt64LE: writeUInt64LE, + writeVarInt: writeVarInt +} + +},{"pushdata-bitcoin":720,"varuint-bitcoin":830}],74:[function(require,module,exports){ +var createHash = require('create-hash') + +function ripemd160 (buffer) { + return createHash('rmd160').update(buffer).digest() +} + +function sha1 (buffer) { + return createHash('sha1').update(buffer).digest() +} + +function sha256 (buffer) { + return createHash('sha256').update(buffer).digest() +} + +function hash160 (buffer) { + return ripemd160(sha256(buffer)) +} + +function hash256 (buffer) { + return sha256(sha256(buffer)) +} + +module.exports = { + hash160: hash160, + hash256: hash256, + ripemd160: ripemd160, + sha1: sha1, + sha256: sha256 +} + +},{"create-hash":239}],75:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var createHmac = require('create-hmac') +var typeforce = require('typeforce') +var types = require('./types') + +var BigInteger = require('bigi') +var ECSignature = require('./ecsignature') + +var ZERO = Buffer.alloc(1, 0) +var ONE = Buffer.alloc(1, 1) + +var ecurve = require('ecurve') +var secp256k1 = ecurve.getCurveByName('secp256k1') + +// https://tools.ietf.org/html/rfc6979#section-3.2 +function deterministicGenerateK (hash, x, checkSig) { + typeforce(types.tuple( + types.Hash256bit, + types.Buffer256bit, + types.Function + ), arguments) + + // Step A, ignored as hash already provided + // Step B + // Step C + var k = Buffer.alloc(32, 0) + var v = Buffer.alloc(32, 1) + + // Step D + k = createHmac('sha256', k) + .update(v) + .update(ZERO) + .update(x) + .update(hash) + .digest() + + // Step E + v = createHmac('sha256', k).update(v).digest() + + // Step F + k = createHmac('sha256', k) + .update(v) + .update(ONE) + .update(x) + .update(hash) + .digest() + + // Step G + v = createHmac('sha256', k).update(v).digest() + + // Step H1/H2a, ignored as tlen === qlen (256 bit) + // Step H2b + v = createHmac('sha256', k).update(v).digest() + + var T = BigInteger.fromBuffer(v) + + // Step H3, repeat until T is within the interval [1, n - 1] and is suitable for ECDSA + while (T.signum() <= 0 || T.compareTo(secp256k1.n) >= 0 || !checkSig(T)) { + k = createHmac('sha256', k) + .update(v) + .update(ZERO) + .digest() + + v = createHmac('sha256', k).update(v).digest() + + // Step H1/H2a, again, ignored as tlen === qlen (256 bit) + // Step H2b again + v = createHmac('sha256', k).update(v).digest() + T = BigInteger.fromBuffer(v) + } + + return T +} + +var N_OVER_TWO = secp256k1.n.shiftRight(1) + +function sign (hash, d) { + typeforce(types.tuple(types.Hash256bit, types.BigInt), arguments) + + var x = d.toBuffer(32) + var e = BigInteger.fromBuffer(hash) + var n = secp256k1.n + var G = secp256k1.G + + var r, s + deterministicGenerateK(hash, x, function (k) { + var Q = G.multiply(k) + + if (secp256k1.isInfinity(Q)) return false + + r = Q.affineX.mod(n) + if (r.signum() === 0) return false + + s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n) + if (s.signum() === 0) return false + + return true + }) + + // enforce low S values, see bip62: 'low s values in signatures' + if (s.compareTo(N_OVER_TWO) > 0) { + s = n.subtract(s) + } + + return new ECSignature(r, s) +} + +function verify (hash, signature, Q) { + typeforce(types.tuple( + types.Hash256bit, + types.ECSignature, + types.ECPoint + ), arguments) + + var n = secp256k1.n + var G = secp256k1.G + + var r = signature.r + var s = signature.s + + // 1.4.1 Enforce r and s are both integers in the interval [1, n − 1] + if (r.signum() <= 0 || r.compareTo(n) >= 0) return false + if (s.signum() <= 0 || s.compareTo(n) >= 0) return false + + // 1.4.2 H = Hash(M), already done by the user + // 1.4.3 e = H + var e = BigInteger.fromBuffer(hash) + + // Compute s^-1 + var sInv = s.modInverse(n) + + // 1.4.4 Compute u1 = es^−1 mod n + // u2 = rs^−1 mod n + var u1 = e.multiply(sInv).mod(n) + var u2 = r.multiply(sInv).mod(n) + + // 1.4.5 Compute R = (xR, yR) + // R = u1G + u2Q + var R = G.multiplyTwo(u1, Q, u2) + + // 1.4.5 (cont.) Enforce R is not at infinity + if (secp256k1.isInfinity(R)) return false + + // 1.4.6 Convert the field element R.x to an integer + var xR = R.affineX + + // 1.4.7 Set v = xR mod n + var v = xR.mod(n) + + // 1.4.8 If v = r, output "valid", and if v != r, output "invalid" + return v.equals(r) +} + +module.exports = { + deterministicGenerateK: deterministicGenerateK, + sign: sign, + verify: verify, + + // TODO: remove + __curve: secp256k1 +} + +},{"./ecsignature":77,"./types":107,"bigi":63,"create-hmac":241,"ecurve":257,"safe-buffer":742,"typeforce":816}],76:[function(require,module,exports){ +var baddress = require('./address') +var bcrypto = require('./crypto') +var ecdsa = require('./ecdsa') +var randomBytes = require('randombytes') +var typeforce = require('typeforce') +var types = require('./types') +var wif = require('wif') + +var NETWORKS = require('./networks') +var BigInteger = require('bigi') + +var ecurve = require('ecurve') +var secp256k1 = ecdsa.__curve + +function ECPair (d, Q, options) { + if (options) { + typeforce({ + compressed: types.maybe(types.Boolean), + network: types.maybe(types.Network) + }, options) + } + + options = options || {} + + if (d) { + if (d.signum() <= 0) throw new Error('Private key must be greater than 0') + if (d.compareTo(secp256k1.n) >= 0) throw new Error('Private key must be less than the curve order') + if (Q) throw new TypeError('Unexpected publicKey parameter') + + this.d = d + } else { + typeforce(types.ECPoint, Q) + + this.__Q = Q + } + + this.compressed = options.compressed === undefined ? true : options.compressed + this.network = options.network || NETWORKS.bitcoin +} + +Object.defineProperty(ECPair.prototype, 'Q', { + get: function () { + if (!this.__Q && this.d) { + this.__Q = secp256k1.G.multiply(this.d) + } + + return this.__Q + } +}) + +ECPair.fromPublicKeyBuffer = function (buffer, network) { + var Q = ecurve.Point.decodeFrom(secp256k1, buffer) + + return new ECPair(null, Q, { + compressed: Q.compressed, + network: network + }) +} + +ECPair.fromWIF = function (string, network) { + var decoded = wif.decode(string) + var version = decoded.version + + // list of networks? + if (types.Array(network)) { + network = network.filter(function (x) { + return version === x.wif + }).pop() + + if (!network) throw new Error('Unknown network version') + + // otherwise, assume a network object (or default to bitcoin) + } else { + network = network || NETWORKS.bitcoin + + if (version !== network.wif) throw new Error('Invalid network version') + } + + var d = BigInteger.fromBuffer(decoded.privateKey) + + return new ECPair(d, null, { + compressed: decoded.compressed, + network: network + }) +} + +ECPair.makeRandom = function (options) { + options = options || {} + + var rng = options.rng || randomBytes + + var d + do { + var buffer = rng(32) + typeforce(types.Buffer256bit, buffer) + + d = BigInteger.fromBuffer(buffer) + } while (d.signum() <= 0 || d.compareTo(secp256k1.n) >= 0) + + return new ECPair(d, null, options) +} + +ECPair.prototype.getAddress = function () { + return baddress.toBase58Check(bcrypto.hash160(this.getPublicKeyBuffer()), this.getNetwork().pubKeyHash) +} + +ECPair.prototype.getNetwork = function () { + return this.network +} + +ECPair.prototype.getPublicKeyBuffer = function () { + return this.Q.getEncoded(this.compressed) +} + +ECPair.prototype.sign = function (hash) { + if (!this.d) throw new Error('Missing private key') + + return ecdsa.sign(hash, this.d) +} + +ECPair.prototype.toWIF = function () { + if (!this.d) throw new Error('Missing private key') + + return wif.encode(this.network.wif, this.d.toBuffer(32), this.compressed) +} + +ECPair.prototype.verify = function (hash, signature) { + return ecdsa.verify(hash, signature, this.Q) +} + +module.exports = ECPair + +},{"./address":71,"./crypto":74,"./ecdsa":75,"./networks":80,"./types":107,"bigi":63,"ecurve":257,"randombytes":724,"typeforce":816,"wif":832}],77:[function(require,module,exports){ +(function (Buffer){ +var bip66 = require('bip66') +var typeforce = require('typeforce') +var types = require('./types') + +var BigInteger = require('bigi') + +function ECSignature (r, s) { + typeforce(types.tuple(types.BigInt, types.BigInt), arguments) + + this.r = r + this.s = s +} + +ECSignature.parseCompact = function (buffer) { + typeforce(types.BufferN(65), buffer) + + var flagByte = buffer.readUInt8(0) - 27 + if (flagByte !== (flagByte & 7)) throw new Error('Invalid signature parameter') + + var compressed = !!(flagByte & 4) + var recoveryParam = flagByte & 3 + var signature = ECSignature.fromRSBuffer(buffer.slice(1)) + + return { + compressed: compressed, + i: recoveryParam, + signature: signature + } +} + +ECSignature.fromRSBuffer = function (buffer) { + typeforce(types.BufferN(64), buffer) + + var r = BigInteger.fromBuffer(buffer.slice(0, 32)) + var s = BigInteger.fromBuffer(buffer.slice(32, 64)) + return new ECSignature(r, s) +} + +ECSignature.fromDER = function (buffer) { + var decode = bip66.decode(buffer) + var r = BigInteger.fromDERInteger(decode.r) + var s = BigInteger.fromDERInteger(decode.s) + + return new ECSignature(r, s) +} + +// BIP62: 1 byte hashType flag (only 0x01, 0x02, 0x03, 0x81, 0x82 and 0x83 are allowed) +ECSignature.parseScriptSignature = function (buffer) { + var hashType = buffer.readUInt8(buffer.length - 1) + var hashTypeMod = hashType & ~0x80 + + if (hashTypeMod <= 0x00 || hashTypeMod >= 0x04) throw new Error('Invalid hashType ' + hashType) + + return { + signature: ECSignature.fromDER(buffer.slice(0, -1)), + hashType: hashType + } +} + +ECSignature.prototype.toCompact = function (i, compressed) { + if (compressed) { + i += 4 + } + + i += 27 + + var buffer = Buffer.alloc(65) + buffer.writeUInt8(i, 0) + this.toRSBuffer(buffer, 1) + return buffer +} + +ECSignature.prototype.toDER = function () { + var r = Buffer.from(this.r.toDERInteger()) + var s = Buffer.from(this.s.toDERInteger()) + + return bip66.encode(r, s) +} + +ECSignature.prototype.toRSBuffer = function (buffer, offset) { + buffer = buffer || Buffer.alloc(64) + this.r.toBuffer(32).copy(buffer, offset) + this.s.toBuffer(32).copy(buffer, offset + 32) + return buffer +} + +ECSignature.prototype.toScriptSignature = function (hashType) { + var hashTypeMod = hashType & ~0x80 + if (hashTypeMod <= 0 || hashTypeMod >= 4) throw new Error('Invalid hashType ' + hashType) + + var hashTypeBuffer = Buffer.alloc(1) + hashTypeBuffer.writeUInt8(hashType, 0) + + return Buffer.concat([this.toDER(), hashTypeBuffer]) +} + +module.exports = ECSignature + +}).call(this,require("buffer").Buffer) +},{"./types":107,"bigi":63,"bip66":68,"buffer":146,"typeforce":816}],78:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var base58check = require('bs58check') +var bcrypto = require('./crypto') +var createHmac = require('create-hmac') +var typeforce = require('typeforce') +var types = require('./types') +var NETWORKS = require('./networks') + +var BigInteger = require('bigi') +var ECPair = require('./ecpair') + +var ecurve = require('ecurve') +var curve = ecurve.getCurveByName('secp256k1') + +function HDNode (keyPair, chainCode) { + typeforce(types.tuple('ECPair', types.Buffer256bit), arguments) + + if (!keyPair.compressed) throw new TypeError('BIP32 only allows compressed keyPairs') + + this.keyPair = keyPair + this.chainCode = chainCode + this.depth = 0 + this.index = 0 + this.parentFingerprint = 0x00000000 +} + +HDNode.HIGHEST_BIT = 0x80000000 +HDNode.LENGTH = 78 +HDNode.MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8') + +HDNode.fromSeedBuffer = function (seed, network) { + typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments) + + if (seed.length < 16) throw new TypeError('Seed should be at least 128 bits') + if (seed.length > 64) throw new TypeError('Seed should be at most 512 bits') + + var I = createHmac('sha512', HDNode.MASTER_SECRET).update(seed).digest() + var IL = I.slice(0, 32) + var IR = I.slice(32) + + // In case IL is 0 or >= n, the master key is invalid + // This is handled by the ECPair constructor + var pIL = BigInteger.fromBuffer(IL) + var keyPair = new ECPair(pIL, null, { + network: network + }) + + return new HDNode(keyPair, IR) +} + +HDNode.fromSeedHex = function (hex, network) { + return HDNode.fromSeedBuffer(Buffer.from(hex, 'hex'), network) +} + +HDNode.fromBase58 = function (string, networks) { + var buffer = base58check.decode(string) + if (buffer.length !== 78) throw new Error('Invalid buffer length') + + // 4 bytes: version bytes + var version = buffer.readUInt32BE(0) + var network + + // list of networks? + if (Array.isArray(networks)) { + network = networks.filter(function (x) { + return version === x.bip32.private || + version === x.bip32.public + }).pop() + + if (!network) throw new Error('Unknown network version') + + // otherwise, assume a network object (or default to bitcoin) + } else { + network = networks || NETWORKS.bitcoin + } + + if (version !== network.bip32.private && + version !== network.bip32.public) throw new Error('Invalid network version') + + // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ... + var depth = buffer[4] + + // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key) + var parentFingerprint = buffer.readUInt32BE(5) + if (depth === 0) { + if (parentFingerprint !== 0x00000000) throw new Error('Invalid parent fingerprint') + } + + // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized. + // This is encoded in MSB order. (0x00000000 if master key) + var index = buffer.readUInt32BE(9) + if (depth === 0 && index !== 0) throw new Error('Invalid index') + + // 32 bytes: the chain code + var chainCode = buffer.slice(13, 45) + var keyPair + + // 33 bytes: private key data (0x00 + k) + if (version === network.bip32.private) { + if (buffer.readUInt8(45) !== 0x00) throw new Error('Invalid private key') + + var d = BigInteger.fromBuffer(buffer.slice(46, 78)) + keyPair = new ECPair(d, null, { network: network }) + + // 33 bytes: public key data (0x02 + X or 0x03 + X) + } else { + var Q = ecurve.Point.decodeFrom(curve, buffer.slice(45, 78)) + // Q.compressed is assumed, if somehow this assumption is broken, `new HDNode` will throw + + // Verify that the X coordinate in the public point corresponds to a point on the curve. + // If not, the extended public key is invalid. + curve.validate(Q) + + keyPair = new ECPair(null, Q, { network: network }) + } + + var hd = new HDNode(keyPair, chainCode) + hd.depth = depth + hd.index = index + hd.parentFingerprint = parentFingerprint + + return hd +} + +HDNode.prototype.getAddress = function () { + return this.keyPair.getAddress() +} + +HDNode.prototype.getIdentifier = function () { + return bcrypto.hash160(this.keyPair.getPublicKeyBuffer()) +} + +HDNode.prototype.getFingerprint = function () { + return this.getIdentifier().slice(0, 4) +} + +HDNode.prototype.getNetwork = function () { + return this.keyPair.getNetwork() +} + +HDNode.prototype.getPublicKeyBuffer = function () { + return this.keyPair.getPublicKeyBuffer() +} + +HDNode.prototype.neutered = function () { + var neuteredKeyPair = new ECPair(null, this.keyPair.Q, { + network: this.keyPair.network + }) + + var neutered = new HDNode(neuteredKeyPair, this.chainCode) + neutered.depth = this.depth + neutered.index = this.index + neutered.parentFingerprint = this.parentFingerprint + + return neutered +} + +HDNode.prototype.sign = function (hash) { + return this.keyPair.sign(hash) +} + +HDNode.prototype.verify = function (hash, signature) { + return this.keyPair.verify(hash, signature) +} + +HDNode.prototype.toBase58 = function (__isPrivate) { + if (__isPrivate !== undefined) throw new TypeError('Unsupported argument in 2.0.0') + + // Version + var network = this.keyPair.network + var version = (!this.isNeutered()) ? network.bip32.private : network.bip32.public + var buffer = Buffer.allocUnsafe(78) + + // 4 bytes: version bytes + buffer.writeUInt32BE(version, 0) + + // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, .... + buffer.writeUInt8(this.depth, 4) + + // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key) + buffer.writeUInt32BE(this.parentFingerprint, 5) + + // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized. + // This is encoded in big endian. (0x00000000 if master key) + buffer.writeUInt32BE(this.index, 9) + + // 32 bytes: the chain code + this.chainCode.copy(buffer, 13) + + // 33 bytes: the public key or private key data + if (!this.isNeutered()) { + // 0x00 + k for private keys + buffer.writeUInt8(0, 45) + this.keyPair.d.toBuffer(32).copy(buffer, 46) + + // 33 bytes: the public key + } else { + // X9.62 encoding for public keys + this.keyPair.getPublicKeyBuffer().copy(buffer, 45) + } + + return base58check.encode(buffer) +} + +// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#child-key-derivation-ckd-functions +HDNode.prototype.derive = function (index) { + typeforce(types.UInt32, index) + + var isHardened = index >= HDNode.HIGHEST_BIT + var data = Buffer.allocUnsafe(37) + + // Hardened child + if (isHardened) { + if (this.isNeutered()) throw new TypeError('Could not derive hardened child key') + + // data = 0x00 || ser256(kpar) || ser32(index) + data[0] = 0x00 + this.keyPair.d.toBuffer(32).copy(data, 1) + data.writeUInt32BE(index, 33) + + // Normal child + } else { + // data = serP(point(kpar)) || ser32(index) + // = serP(Kpar) || ser32(index) + this.keyPair.getPublicKeyBuffer().copy(data, 0) + data.writeUInt32BE(index, 33) + } + + var I = createHmac('sha512', this.chainCode).update(data).digest() + var IL = I.slice(0, 32) + var IR = I.slice(32) + + var pIL = BigInteger.fromBuffer(IL) + + // In case parse256(IL) >= n, proceed with the next value for i + if (pIL.compareTo(curve.n) >= 0) { + return this.derive(index + 1) + } + + // Private parent key -> private child key + var derivedKeyPair + if (!this.isNeutered()) { + // ki = parse256(IL) + kpar (mod n) + var ki = pIL.add(this.keyPair.d).mod(curve.n) + + // In case ki == 0, proceed with the next value for i + if (ki.signum() === 0) { + return this.derive(index + 1) + } + + derivedKeyPair = new ECPair(ki, null, { + network: this.keyPair.network + }) + + // Public parent key -> public child key + } else { + // Ki = point(parse256(IL)) + Kpar + // = G*IL + Kpar + var Ki = curve.G.multiply(pIL).add(this.keyPair.Q) + + // In case Ki is the point at infinity, proceed with the next value for i + if (curve.isInfinity(Ki)) { + return this.derive(index + 1) + } + + derivedKeyPair = new ECPair(null, Ki, { + network: this.keyPair.network + }) + } + + var hd = new HDNode(derivedKeyPair, IR) + hd.depth = this.depth + 1 + hd.index = index + hd.parentFingerprint = this.getFingerprint().readUInt32BE(0) + + return hd +} + +HDNode.prototype.deriveHardened = function (index) { + typeforce(types.UInt31, index) + + // Only derives hardened private keys by default + return this.derive(index + HDNode.HIGHEST_BIT) +} + +// Private === not neutered +// Public === neutered +HDNode.prototype.isNeutered = function () { + return !(this.keyPair.d) +} + +HDNode.prototype.derivePath = function (path) { + typeforce(types.BIP32Path, path) + + var splitPath = path.split('/') + if (splitPath[0] === 'm') { + if (this.parentFingerprint) { + throw new Error('Not a master node') + } + + splitPath = splitPath.slice(1) + } + + return splitPath.reduce(function (prevHd, indexStr) { + var index + if (indexStr.slice(-1) === "'") { + index = parseInt(indexStr.slice(0, -1), 10) + return prevHd.deriveHardened(index) + } else { + index = parseInt(indexStr, 10) + return prevHd.derive(index) + } + }, this) +} + +module.exports = HDNode + +},{"./crypto":74,"./ecpair":76,"./networks":80,"./types":107,"bigi":63,"bs58check":140,"create-hmac":241,"ecurve":257,"safe-buffer":742,"typeforce":816}],79:[function(require,module,exports){ +var script = require('./script') + +var templates = require('./templates') +for (var key in templates) { + script[key] = templates[key] +} + +module.exports = { + bufferutils: require('./bufferutils'), // TODO: remove in 4.0.0 + + Block: require('./block'), + ECPair: require('./ecpair'), + ECSignature: require('./ecsignature'), + HDNode: require('./hdnode'), + Transaction: require('./transaction'), + TransactionBuilder: require('./transaction_builder'), + + address: require('./address'), + crypto: require('./crypto'), + networks: require('./networks'), + opcodes: require('bitcoin-ops'), + script: script +} + +},{"./address":71,"./block":72,"./bufferutils":73,"./crypto":74,"./ecpair":76,"./ecsignature":77,"./hdnode":78,"./networks":80,"./script":81,"./templates":83,"./transaction":105,"./transaction_builder":106,"bitcoin-ops":69}],80:[function(require,module,exports){ +// https://en.bitcoin.it/wiki/List_of_address_prefixes +// Dogecoin BIP32 is a proposed standard: https://bitcointalk.org/index.php?topic=409731 + +module.exports = { + bitcoin: { + messagePrefix: '\x18Bitcoin Signed Message:\n', + bech32: 'bc', + bip32: { + public: 0x0488b21e, + private: 0x0488ade4 + }, + pubKeyHash: 0x00, + scriptHash: 0x05, + wif: 0x80 + }, + testnet: { + messagePrefix: '\x18Bitcoin Signed Message:\n', + bech32: 'tb', + bip32: { + public: 0x043587cf, + private: 0x04358394 + }, + pubKeyHash: 0x6f, + scriptHash: 0xc4, + wif: 0xef + }, + litecoin: { + messagePrefix: '\x19Litecoin Signed Message:\n', + bip32: { + public: 0x019da462, + private: 0x019d9cfe + }, + pubKeyHash: 0x30, + scriptHash: 0x32, + wif: 0xb0 + } +} + +},{}],81:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var bip66 = require('bip66') +var pushdata = require('pushdata-bitcoin') +var typeforce = require('typeforce') +var types = require('./types') +var scriptNumber = require('./script_number') + +var OPS = require('bitcoin-ops') +var REVERSE_OPS = require('bitcoin-ops/map') +var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1 + +function isOPInt (value) { + return types.Number(value) && + ((value === OPS.OP_0) || + (value >= OPS.OP_1 && value <= OPS.OP_16) || + (value === OPS.OP_1NEGATE)) +} + +function isPushOnlyChunk (value) { + return types.Buffer(value) || isOPInt(value) +} + +function isPushOnly (value) { + return types.Array(value) && value.every(isPushOnlyChunk) +} + +function asMinimalOP (buffer) { + if (buffer.length === 0) return OPS.OP_0 + if (buffer.length !== 1) return + if (buffer[0] >= 1 && buffer[0] <= 16) return OP_INT_BASE + buffer[0] + if (buffer[0] === 0x81) return OPS.OP_1NEGATE +} + +function compile (chunks) { + // TODO: remove me + if (Buffer.isBuffer(chunks)) return chunks + + typeforce(types.Array, chunks) + + var bufferSize = chunks.reduce(function (accum, chunk) { + // data chunk + if (Buffer.isBuffer(chunk)) { + // adhere to BIP62.3, minimal push policy + if (chunk.length === 1 && asMinimalOP(chunk) !== undefined) { + return accum + 1 + } + + return accum + pushdata.encodingLength(chunk.length) + chunk.length + } + + // opcode + return accum + 1 + }, 0.0) + + var buffer = Buffer.allocUnsafe(bufferSize) + var offset = 0 + + chunks.forEach(function (chunk) { + // data chunk + if (Buffer.isBuffer(chunk)) { + // adhere to BIP62.3, minimal push policy + var opcode = asMinimalOP(chunk) + if (opcode !== undefined) { + buffer.writeUInt8(opcode, offset) + offset += 1 + return + } + + offset += pushdata.encode(buffer, chunk.length, offset) + chunk.copy(buffer, offset) + offset += chunk.length + + // opcode + } else { + buffer.writeUInt8(chunk, offset) + offset += 1 + } + }) + + if (offset !== buffer.length) throw new Error('Could not decode chunks') + return buffer +} + +function decompile (buffer) { + // TODO: remove me + if (types.Array(buffer)) return buffer + + typeforce(types.Buffer, buffer) + + var chunks = [] + var i = 0 + + while (i < buffer.length) { + var opcode = buffer[i] + + // data chunk + if ((opcode > OPS.OP_0) && (opcode <= OPS.OP_PUSHDATA4)) { + var d = pushdata.decode(buffer, i) + + // did reading a pushDataInt fail? empty script + if (d === null) return [] + i += d.size + + // attempt to read too much data? empty script + if (i + d.number > buffer.length) return [] + + var data = buffer.slice(i, i + d.number) + i += d.number + + // decompile minimally + var op = asMinimalOP(data) + if (op !== undefined) { + chunks.push(op) + } else { + chunks.push(data) + } + + // opcode + } else { + chunks.push(opcode) + + i += 1 + } + } + + return chunks +} + +function toASM (chunks) { + if (Buffer.isBuffer(chunks)) { + chunks = decompile(chunks) + } + + return chunks.map(function (chunk) { + // data? + if (Buffer.isBuffer(chunk)) { + var op = asMinimalOP(chunk) + if (op === undefined) return chunk.toString('hex') + chunk = op + } + + // opcode! + return REVERSE_OPS[chunk] + }).join(' ') +} + +function fromASM (asm) { + typeforce(types.String, asm) + + return compile(asm.split(' ').map(function (chunkStr) { + // opcode? + if (OPS[chunkStr] !== undefined) return OPS[chunkStr] + typeforce(types.Hex, chunkStr) + + // data! + return Buffer.from(chunkStr, 'hex') + })) +} + +function toStack (chunks) { + chunks = decompile(chunks) + typeforce(isPushOnly, chunks) + + return chunks.map(function (op) { + if (Buffer.isBuffer(op)) return op + if (op === OPS.OP_0) return Buffer.allocUnsafe(0) + + return scriptNumber.encode(op - OP_INT_BASE) + }) +} + +function isCanonicalPubKey (buffer) { + if (!Buffer.isBuffer(buffer)) return false + if (buffer.length < 33) return false + + switch (buffer[0]) { + case 0x02: + case 0x03: + return buffer.length === 33 + case 0x04: + return buffer.length === 65 + } + + return false +} + +function isDefinedHashType (hashType) { + var hashTypeMod = hashType & ~0x80 + +// return hashTypeMod > SIGHASH_ALL && hashTypeMod < SIGHASH_SINGLE + return hashTypeMod > 0x00 && hashTypeMod < 0x04 +} + +function isCanonicalSignature (buffer) { + if (!Buffer.isBuffer(buffer)) return false + if (!isDefinedHashType(buffer[buffer.length - 1])) return false + + return bip66.check(buffer.slice(0, -1)) +} + +module.exports = { + compile: compile, + decompile: decompile, + fromASM: fromASM, + toASM: toASM, + toStack: toStack, + + number: require('./script_number'), + + isCanonicalPubKey: isCanonicalPubKey, + isCanonicalSignature: isCanonicalSignature, + isPushOnly: isPushOnly, + isDefinedHashType: isDefinedHashType +} + +},{"./script_number":82,"./types":107,"bip66":68,"bitcoin-ops":69,"bitcoin-ops/map":70,"pushdata-bitcoin":720,"safe-buffer":742,"typeforce":816}],82:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer + +function decode (buffer, maxLength, minimal) { + maxLength = maxLength || 4 + minimal = minimal === undefined ? true : minimal + + var length = buffer.length + if (length === 0) return 0 + if (length > maxLength) throw new TypeError('Script number overflow') + if (minimal) { + if ((buffer[length - 1] & 0x7f) === 0) { + if (length <= 1 || (buffer[length - 2] & 0x80) === 0) throw new Error('Non-minimally encoded script number') + } + } + + // 40-bit + if (length === 5) { + var a = buffer.readUInt32LE(0) + var b = buffer.readUInt8(4) + + if (b & 0x80) return -(((b & ~0x80) * 0x100000000) + a) + return (b * 0x100000000) + a + } + + var result = 0 + + // 32-bit / 24-bit / 16-bit / 8-bit + for (var i = 0; i < length; ++i) { + result |= buffer[i] << (8 * i) + } + + if (buffer[length - 1] & 0x80) return -(result & ~(0x80 << (8 * (length - 1)))) + return result +} + +function scriptNumSize (i) { + return i > 0x7fffffff ? 5 + : i > 0x7fffff ? 4 + : i > 0x7fff ? 3 + : i > 0x7f ? 2 + : i > 0x00 ? 1 + : 0 +} + +function encode (number) { + var value = Math.abs(number) + var size = scriptNumSize(value) + var buffer = Buffer.allocUnsafe(size) + var negative = number < 0 + + for (var i = 0; i < size; ++i) { + buffer.writeUInt8(value & 0xff, i) + value >>= 8 + } + + if (buffer[size - 1] & 0x80) { + buffer.writeUInt8(negative ? 0x80 : 0x00, size - 1) + } else if (negative) { + buffer[size - 1] |= 0x80 + } + + return buffer +} + +module.exports = { + decode: decode, + encode: encode +} + +},{"safe-buffer":742}],83:[function(require,module,exports){ +var decompile = require('../script').decompile +var multisig = require('./multisig') +var nullData = require('./nulldata') +var pubKey = require('./pubkey') +var pubKeyHash = require('./pubkeyhash') +var scriptHash = require('./scripthash') +var witnessPubKeyHash = require('./witnesspubkeyhash') +var witnessScriptHash = require('./witnessscripthash') +var witnessCommitment = require('./witnesscommitment') + +var types = { + MULTISIG: 'multisig', + NONSTANDARD: 'nonstandard', + NULLDATA: 'nulldata', + P2PK: 'pubkey', + P2PKH: 'pubkeyhash', + P2SH: 'scripthash', + P2WPKH: 'witnesspubkeyhash', + P2WSH: 'witnessscripthash', + WITNESS_COMMITMENT: 'witnesscommitment' +} + +function classifyOutput (script) { + if (witnessPubKeyHash.output.check(script)) return types.P2WPKH + if (witnessScriptHash.output.check(script)) return types.P2WSH + if (pubKeyHash.output.check(script)) return types.P2PKH + if (scriptHash.output.check(script)) return types.P2SH + + // XXX: optimization, below functions .decompile before use + var chunks = decompile(script) + if (multisig.output.check(chunks)) return types.MULTISIG + if (pubKey.output.check(chunks)) return types.P2PK + if (witnessCommitment.output.check(chunks)) return types.WITNESS_COMMITMENT + if (nullData.output.check(chunks)) return types.NULLDATA + + return types.NONSTANDARD +} + +function classifyInput (script, allowIncomplete) { + // XXX: optimization, below functions .decompile before use + var chunks = decompile(script) + + if (pubKeyHash.input.check(chunks)) return types.P2PKH + if (scriptHash.input.check(chunks, allowIncomplete)) return types.P2SH + if (multisig.input.check(chunks, allowIncomplete)) return types.MULTISIG + if (pubKey.input.check(chunks)) return types.P2PK + + return types.NONSTANDARD +} + +function classifyWitness (script, allowIncomplete) { + // XXX: optimization, below functions .decompile before use + var chunks = decompile(script) + + if (witnessPubKeyHash.input.check(chunks)) return types.P2WPKH + if (witnessScriptHash.input.check(chunks, allowIncomplete)) return types.P2WSH + + return types.NONSTANDARD +} + +module.exports = { + classifyInput: classifyInput, + classifyOutput: classifyOutput, + classifyWitness: classifyWitness, + multisig: multisig, + nullData: nullData, + pubKey: pubKey, + pubKeyHash: pubKeyHash, + scriptHash: scriptHash, + witnessPubKeyHash: witnessPubKeyHash, + witnessScriptHash: witnessScriptHash, + witnessCommitment: witnessCommitment, + types: types +} + +},{"../script":81,"./multisig":84,"./nulldata":87,"./pubkey":88,"./pubkeyhash":91,"./scripthash":94,"./witnesscommitment":97,"./witnesspubkeyhash":99,"./witnessscripthash":102}],84:[function(require,module,exports){ +module.exports = { + input: require('./input'), + output: require('./output') +} + +},{"./input":85,"./output":86}],85:[function(require,module,exports){ +// OP_0 [signatures ...] + +var Buffer = require('safe-buffer').Buffer +var bscript = require('../../script') +var p2mso = require('./output') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function partialSignature (value) { + return value === OPS.OP_0 || bscript.isCanonicalSignature(value) +} + +function check (script, allowIncomplete) { + var chunks = bscript.decompile(script) + if (chunks.length < 2) return false + if (chunks[0] !== OPS.OP_0) return false + + if (allowIncomplete) { + return chunks.slice(1).every(partialSignature) + } + + return chunks.slice(1).every(bscript.isCanonicalSignature) +} +check.toJSON = function () { return 'multisig input' } + +var EMPTY_BUFFER = Buffer.allocUnsafe(0) + +function encodeStack (signatures, scriptPubKey) { + typeforce([partialSignature], signatures) + + if (scriptPubKey) { + var scriptData = p2mso.decode(scriptPubKey) + + if (signatures.length < scriptData.m) { + throw new TypeError('Not enough signatures provided') + } + + if (signatures.length > scriptData.pubKeys.length) { + throw new TypeError('Too many signatures provided') + } + } + + return [].concat(EMPTY_BUFFER, signatures.map(function (sig) { + if (sig === OPS.OP_0) { + return EMPTY_BUFFER + } + return sig + })) +} + +function encode (signatures, scriptPubKey) { + return bscript.compile(encodeStack(signatures, scriptPubKey)) +} + +function decodeStack (stack, allowIncomplete) { + typeforce(typeforce.Array, stack) + typeforce(check, stack, allowIncomplete) + return stack.slice(1) +} + +function decode (buffer, allowIncomplete) { + var stack = bscript.decompile(buffer) + return decodeStack(stack, allowIncomplete) +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../script":81,"./output":86,"bitcoin-ops":69,"safe-buffer":742,"typeforce":816}],86:[function(require,module,exports){ +// m [pubKeys ...] n OP_CHECKMULTISIG + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') +var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1 + +function check (script, allowIncomplete) { + var chunks = bscript.decompile(script) + + if (chunks.length < 4) return false + if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) return false + if (!types.Number(chunks[0])) return false + if (!types.Number(chunks[chunks.length - 2])) return false + var m = chunks[0] - OP_INT_BASE + var n = chunks[chunks.length - 2] - OP_INT_BASE + + if (m <= 0) return false + if (n > 16) return false + if (m > n) return false + if (n !== chunks.length - 3) return false + if (allowIncomplete) return true + + var keys = chunks.slice(1, -2) + return keys.every(bscript.isCanonicalPubKey) +} +check.toJSON = function () { return 'multi-sig output' } + +function encode (m, pubKeys) { + typeforce({ + m: types.Number, + pubKeys: [bscript.isCanonicalPubKey] + }, { + m: m, + pubKeys: pubKeys + }) + + var n = pubKeys.length + if (n < m) throw new TypeError('Not enough pubKeys provided') + + return bscript.compile([].concat( + OP_INT_BASE + m, + pubKeys, + OP_INT_BASE + n, + OPS.OP_CHECKMULTISIG + )) +} + +function decode (buffer, allowIncomplete) { + var chunks = bscript.decompile(buffer) + typeforce(check, chunks, allowIncomplete) + + return { + m: chunks[0] - OP_INT_BASE, + pubKeys: chunks.slice(1, -2) + } +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":81,"../../types":107,"bitcoin-ops":69,"typeforce":816}],87:[function(require,module,exports){ +// OP_RETURN {data} + +var bscript = require('../script') +var types = require('../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length > 1 && + buffer[0] === OPS.OP_RETURN +} +check.toJSON = function () { return 'null data output' } + +function encode (data) { + typeforce(types.Buffer, data) + + return bscript.compile([OPS.OP_RETURN, data]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2) +} + +module.exports = { + output: { + check: check, + decode: decode, + encode: encode + } +} + +},{"../script":81,"../types":107,"bitcoin-ops":69,"typeforce":816}],88:[function(require,module,exports){ +arguments[4][84][0].apply(exports,arguments) +},{"./input":89,"./output":90,"dup":84}],89:[function(require,module,exports){ +// {signature} + +var bscript = require('../../script') +var typeforce = require('typeforce') + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 1 && + bscript.isCanonicalSignature(chunks[0]) +} +check.toJSON = function () { return 'pubKey input' } + +function encodeStack (signature) { + typeforce(bscript.isCanonicalSignature, signature) + return [signature] +} + +function encode (signature) { + return bscript.compile(encodeStack(signature)) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + return stack[0] +} + +function decode (buffer) { + var stack = bscript.decompile(buffer) + return decodeStack(stack) +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../script":81,"typeforce":816}],90:[function(require,module,exports){ +// {pubKey} OP_CHECKSIG + +var bscript = require('../../script') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 2 && + bscript.isCanonicalPubKey(chunks[0]) && + chunks[1] === OPS.OP_CHECKSIG +} +check.toJSON = function () { return 'pubKey output' } + +function encode (pubKey) { + typeforce(bscript.isCanonicalPubKey, pubKey) + + return bscript.compile([pubKey, OPS.OP_CHECKSIG]) +} + +function decode (buffer) { + var chunks = bscript.decompile(buffer) + typeforce(check, chunks) + + return chunks[0] +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":81,"bitcoin-ops":69,"typeforce":816}],91:[function(require,module,exports){ +arguments[4][84][0].apply(exports,arguments) +},{"./input":92,"./output":93,"dup":84}],92:[function(require,module,exports){ +// {signature} {pubKey} + +var bscript = require('../../script') +var typeforce = require('typeforce') + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 2 && + bscript.isCanonicalSignature(chunks[0]) && + bscript.isCanonicalPubKey(chunks[1]) +} +check.toJSON = function () { return 'pubKeyHash input' } + +function encodeStack (signature, pubKey) { + typeforce({ + signature: bscript.isCanonicalSignature, + pubKey: bscript.isCanonicalPubKey + }, { + signature: signature, + pubKey: pubKey + }) + + return [signature, pubKey] +} + +function encode (signature, pubKey) { + return bscript.compile(encodeStack(signature, pubKey)) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + + return { + signature: stack[0], + pubKey: stack[1] + } +} + +function decode (buffer) { + var stack = bscript.decompile(buffer) + return decodeStack(stack) +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../script":81,"typeforce":816}],93:[function(require,module,exports){ +// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 25 && + buffer[0] === OPS.OP_DUP && + buffer[1] === OPS.OP_HASH160 && + buffer[2] === 0x14 && + buffer[23] === OPS.OP_EQUALVERIFY && + buffer[24] === OPS.OP_CHECKSIG +} +check.toJSON = function () { return 'pubKeyHash output' } + +function encode (pubKeyHash) { + typeforce(types.Hash160bit, pubKeyHash) + + return bscript.compile([ + OPS.OP_DUP, + OPS.OP_HASH160, + pubKeyHash, + OPS.OP_EQUALVERIFY, + OPS.OP_CHECKSIG + ]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(3, 23) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":81,"../../types":107,"bitcoin-ops":69,"typeforce":816}],94:[function(require,module,exports){ +arguments[4][84][0].apply(exports,arguments) +},{"./input":95,"./output":96,"dup":84}],95:[function(require,module,exports){ +// {serialized scriptPubKey script} + +var Buffer = require('safe-buffer').Buffer +var bscript = require('../../script') +var typeforce = require('typeforce') + +var p2ms = require('../multisig/') +var p2pk = require('../pubkey/') +var p2pkh = require('../pubkeyhash/') +var p2wpkho = require('../witnesspubkeyhash/output') +var p2wsho = require('../witnessscripthash/output') + +function check (script, allowIncomplete) { + var chunks = bscript.decompile(script) + if (chunks.length < 1) return false + + var lastChunk = chunks[chunks.length - 1] + if (!Buffer.isBuffer(lastChunk)) return false + + var scriptSigChunks = bscript.decompile(bscript.compile(chunks.slice(0, -1))) + var redeemScriptChunks = bscript.decompile(lastChunk) + + // is redeemScript a valid script? + if (redeemScriptChunks.length === 0) return false + + // is redeemScriptSig push only? + if (!bscript.isPushOnly(scriptSigChunks)) return false + + // is witness? + if (chunks.length === 1) { + return p2wsho.check(redeemScriptChunks) || + p2wpkho.check(redeemScriptChunks) + } + + // match types + if (p2pkh.input.check(scriptSigChunks) && + p2pkh.output.check(redeemScriptChunks)) return true + + if (p2ms.input.check(scriptSigChunks, allowIncomplete) && + p2ms.output.check(redeemScriptChunks)) return true + + if (p2pk.input.check(scriptSigChunks) && + p2pk.output.check(redeemScriptChunks)) return true + + return false +} +check.toJSON = function () { return 'scriptHash input' } + +function encodeStack (redeemScriptStack, redeemScript) { + var serializedScriptPubKey = bscript.compile(redeemScript) + + return [].concat(redeemScriptStack, serializedScriptPubKey) +} + +function encode (redeemScriptSig, redeemScript) { + var redeemScriptStack = bscript.decompile(redeemScriptSig) + + return bscript.compile(encodeStack(redeemScriptStack, redeemScript)) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + + return { + redeemScriptStack: stack.slice(0, -1), + redeemScript: stack[stack.length - 1] + } +} + +function decode (buffer) { + var stack = bscript.decompile(buffer) + var result = decodeStack(stack) + result.redeemScriptSig = bscript.compile(result.redeemScriptStack) + delete result.redeemScriptStack + return result +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../script":81,"../multisig/":84,"../pubkey/":88,"../pubkeyhash/":91,"../witnesspubkeyhash/output":101,"../witnessscripthash/output":104,"safe-buffer":742,"typeforce":816}],96:[function(require,module,exports){ +// OP_HASH160 {scriptHash} OP_EQUAL + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 23 && + buffer[0] === OPS.OP_HASH160 && + buffer[1] === 0x14 && + buffer[22] === OPS.OP_EQUAL +} +check.toJSON = function () { return 'scriptHash output' } + +function encode (scriptHash) { + typeforce(types.Hash160bit, scriptHash) + + return bscript.compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2, 22) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":81,"../../types":107,"bitcoin-ops":69,"typeforce":816}],97:[function(require,module,exports){ +module.exports = { + output: require('./output') +} + +},{"./output":98}],98:[function(require,module,exports){ +// OP_RETURN {aa21a9ed} {commitment} + +var Buffer = require('safe-buffer').Buffer +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +var HEADER = Buffer.from('aa21a9ed', 'hex') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length > 37 && + buffer[0] === OPS.OP_RETURN && + buffer[1] === 0x24 && + buffer.slice(2, 6).equals(HEADER) +} + +check.toJSON = function () { return 'Witness commitment output' } + +function encode (commitment) { + typeforce(types.Hash256bit, commitment) + + var buffer = Buffer.allocUnsafe(36) + HEADER.copy(buffer, 0) + commitment.copy(buffer, 4) + + return bscript.compile([OPS.OP_RETURN, buffer]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return bscript.decompile(buffer)[1].slice(4, 36) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":81,"../../types":107,"bitcoin-ops":69,"safe-buffer":742,"typeforce":816}],99:[function(require,module,exports){ +arguments[4][84][0].apply(exports,arguments) +},{"./input":100,"./output":101,"dup":84}],100:[function(require,module,exports){ +// {signature} {pubKey} + +var bscript = require('../../script') +var typeforce = require('typeforce') + +function isCompressedCanonicalPubKey (pubKey) { + return bscript.isCanonicalPubKey(pubKey) && pubKey.length === 33 +} + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 2 && + bscript.isCanonicalSignature(chunks[0]) && + isCompressedCanonicalPubKey(chunks[1]) +} +check.toJSON = function () { return 'witnessPubKeyHash input' } + +function encodeStack (signature, pubKey) { + typeforce({ + signature: bscript.isCanonicalSignature, + pubKey: isCompressedCanonicalPubKey + }, { + signature: signature, + pubKey: pubKey + }) + + return [signature, pubKey] +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + + return { + signature: stack[0], + pubKey: stack[1] + } +} + +module.exports = { + check: check, + decodeStack: decodeStack, + encodeStack: encodeStack +} + +},{"../../script":81,"typeforce":816}],101:[function(require,module,exports){ +// OP_0 {pubKeyHash} + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 22 && + buffer[0] === OPS.OP_0 && + buffer[1] === 0x14 +} +check.toJSON = function () { return 'Witness pubKeyHash output' } + +function encode (pubKeyHash) { + typeforce(types.Hash160bit, pubKeyHash) + + return bscript.compile([OPS.OP_0, pubKeyHash]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":81,"../../types":107,"bitcoin-ops":69,"typeforce":816}],102:[function(require,module,exports){ +arguments[4][84][0].apply(exports,arguments) +},{"./input":103,"./output":104,"dup":84}],103:[function(require,module,exports){ +(function (Buffer){ +// {serialized scriptPubKey script} + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') + +var p2ms = require('../multisig/') +var p2pk = require('../pubkey/') +var p2pkh = require('../pubkeyhash/') + +function check (chunks, allowIncomplete) { + typeforce(types.Array, chunks) + if (chunks.length < 1) return false + + var witnessScript = chunks[chunks.length - 1] + if (!Buffer.isBuffer(witnessScript)) return false + + var witnessScriptChunks = bscript.decompile(witnessScript) + + // is witnessScript a valid script? + if (witnessScriptChunks.length === 0) return false + + var witnessRawScriptSig = bscript.compile(chunks.slice(0, -1)) + + // match types + if (p2pkh.input.check(witnessRawScriptSig) && + p2pkh.output.check(witnessScriptChunks)) return true + + if (p2ms.input.check(witnessRawScriptSig, allowIncomplete) && + p2ms.output.check(witnessScriptChunks)) return true + + if (p2pk.input.check(witnessRawScriptSig) && + p2pk.output.check(witnessScriptChunks)) return true + + return false +} +check.toJSON = function () { return 'witnessScriptHash input' } + +function encodeStack (witnessData, witnessScript) { + typeforce({ + witnessData: [types.Buffer], + witnessScript: types.Buffer + }, { + witnessData: witnessData, + witnessScript: witnessScript + }) + + return [].concat(witnessData, witnessScript) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + return { + witnessData: stack.slice(0, -1), + witnessScript: stack[stack.length - 1] + } +} + +module.exports = { + check: check, + decodeStack: decodeStack, + encodeStack: encodeStack +} + +}).call(this,{"isBuffer":require("../../../../insert-module-globals/node_modules/is-buffer/index.js")}) +},{"../../../../insert-module-globals/node_modules/is-buffer/index.js":397,"../../script":81,"../../types":107,"../multisig/":84,"../pubkey/":88,"../pubkeyhash/":91,"typeforce":816}],104:[function(require,module,exports){ +// OP_0 {scriptHash} + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 34 && + buffer[0] === OPS.OP_0 && + buffer[1] === 0x20 +} +check.toJSON = function () { return 'Witness scriptHash output' } + +function encode (scriptHash) { + typeforce(types.Hash256bit, scriptHash) + + return bscript.compile([OPS.OP_0, scriptHash]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":81,"../../types":107,"bitcoin-ops":69,"typeforce":816}],105:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var bcrypto = require('./crypto') +var bscript = require('./script') +var bufferutils = require('./bufferutils') +var opcodes = require('bitcoin-ops') +var typeforce = require('typeforce') +var types = require('./types') +var varuint = require('varuint-bitcoin') + +function varSliceSize (someScript) { + var length = someScript.length + + return varuint.encodingLength(length) + length +} + +function vectorSize (someVector) { + var length = someVector.length + + return varuint.encodingLength(length) + someVector.reduce(function (sum, witness) { + return sum + varSliceSize(witness) + }, 0) +} + +function Transaction () { + this.version = 1 + this.locktime = 0 + this.ins = [] + this.outs = [] +} + +Transaction.DEFAULT_SEQUENCE = 0xffffffff +Transaction.SIGHASH_ALL = 0x01 +Transaction.SIGHASH_NONE = 0x02 +Transaction.SIGHASH_SINGLE = 0x03 +Transaction.SIGHASH_ANYONECANPAY = 0x80 +Transaction.ADVANCED_TRANSACTION_MARKER = 0x00 +Transaction.ADVANCED_TRANSACTION_FLAG = 0x01 + +var EMPTY_SCRIPT = Buffer.allocUnsafe(0) +var EMPTY_WITNESS = [] +var ZERO = Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex') +var ONE = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex') +var VALUE_UINT64_MAX = Buffer.from('ffffffffffffffff', 'hex') +var BLANK_OUTPUT = { + script: EMPTY_SCRIPT, + valueBuffer: VALUE_UINT64_MAX +} + +Transaction.fromBuffer = function (buffer, __noStrict) { + var offset = 0 + function readSlice (n) { + offset += n + return buffer.slice(offset - n, offset) + } + + function readUInt32 () { + var i = buffer.readUInt32LE(offset) + offset += 4 + return i + } + + function readInt32 () { + var i = buffer.readInt32LE(offset) + offset += 4 + return i + } + + function readUInt64 () { + var i = bufferutils.readUInt64LE(buffer, offset) + offset += 8 + return i + } + + function readVarInt () { + var vi = varuint.decode(buffer, offset) + offset += varuint.decode.bytes + return vi + } + + function readVarSlice () { + return readSlice(readVarInt()) + } + + function readVector () { + var count = readVarInt() + var vector = [] + for (var i = 0; i < count; i++) vector.push(readVarSlice()) + return vector + } + + var tx = new Transaction() + tx.version = readInt32() + + var marker = buffer.readUInt8(offset) + var flag = buffer.readUInt8(offset + 1) + + var hasWitnesses = false + if (marker === Transaction.ADVANCED_TRANSACTION_MARKER && + flag === Transaction.ADVANCED_TRANSACTION_FLAG) { + offset += 2 + hasWitnesses = true + } + + var vinLen = readVarInt() + for (var i = 0; i < vinLen; ++i) { + tx.ins.push({ + hash: readSlice(32), + index: readUInt32(), + script: readVarSlice(), + sequence: readUInt32(), + witness: EMPTY_WITNESS + }) + } + + var voutLen = readVarInt() + for (i = 0; i < voutLen; ++i) { + tx.outs.push({ + value: readUInt64(), + script: readVarSlice() + }) + } + + if (hasWitnesses) { + for (i = 0; i < vinLen; ++i) { + tx.ins[i].witness = readVector() + } + + // was this pointless? + if (!tx.hasWitnesses()) throw new Error('Transaction has superfluous witness data') + } + + tx.locktime = readUInt32() + + if (__noStrict) return tx + if (offset !== buffer.length) throw new Error('Transaction has unexpected data') + + return tx +} + +Transaction.fromHex = function (hex) { + return Transaction.fromBuffer(Buffer.from(hex, 'hex')) +} + +Transaction.isCoinbaseHash = function (buffer) { + typeforce(types.Hash256bit, buffer) + for (var i = 0; i < 32; ++i) { + if (buffer[i] !== 0) return false + } + return true +} + +Transaction.prototype.isCoinbase = function () { + return this.ins.length === 1 && Transaction.isCoinbaseHash(this.ins[0].hash) +} + +Transaction.prototype.addInput = function (hash, index, sequence, scriptSig) { + typeforce(types.tuple( + types.Hash256bit, + types.UInt32, + types.maybe(types.UInt32), + types.maybe(types.Buffer) + ), arguments) + + if (types.Null(sequence)) { + sequence = Transaction.DEFAULT_SEQUENCE + } + + // Add the input and return the input's index + return (this.ins.push({ + hash: hash, + index: index, + script: scriptSig || EMPTY_SCRIPT, + sequence: sequence, + witness: EMPTY_WITNESS + }) - 1) +} + +Transaction.prototype.addOutput = function (scriptPubKey, value) { + typeforce(types.tuple(types.Buffer, types.Satoshi), arguments) + + // Add the output and return the output's index + return (this.outs.push({ + script: scriptPubKey, + value: value + }) - 1) +} + +Transaction.prototype.hasWitnesses = function () { + return this.ins.some(function (x) { + return x.witness.length !== 0 + }) +} + +Transaction.prototype.weight = function () { + var base = this.__byteLength(false) + var total = this.__byteLength(true) + return base * 3 + total +} + +Transaction.prototype.virtualSize = function () { + return Math.ceil(this.weight() / 4) +} + +Transaction.prototype.byteLength = function () { + return this.__byteLength(true) +} + +Transaction.prototype.__byteLength = function (__allowWitness) { + var hasWitnesses = __allowWitness && this.hasWitnesses() + + return ( + (hasWitnesses ? 10 : 8) + + varuint.encodingLength(this.ins.length) + + varuint.encodingLength(this.outs.length) + + this.ins.reduce(function (sum, input) { return sum + 40 + varSliceSize(input.script) }, 0) + + this.outs.reduce(function (sum, output) { return sum + 8 + varSliceSize(output.script) }, 0) + + (hasWitnesses ? this.ins.reduce(function (sum, input) { return sum + vectorSize(input.witness) }, 0) : 0) + ) +} + +Transaction.prototype.clone = function () { + var newTx = new Transaction() + newTx.version = this.version + newTx.locktime = this.locktime + + newTx.ins = this.ins.map(function (txIn) { + return { + hash: txIn.hash, + index: txIn.index, + script: txIn.script, + sequence: txIn.sequence, + witness: txIn.witness + } + }) + + newTx.outs = this.outs.map(function (txOut) { + return { + script: txOut.script, + value: txOut.value + } + }) + + return newTx +} + +/** + * Hash transaction for signing a specific input. + * + * Bitcoin uses a different hash for each signed transaction input. + * This method copies the transaction, makes the necessary changes based on the + * hashType, and then hashes the result. + * This hash can then be used to sign the provided transaction input. + */ +Transaction.prototype.hashForSignature = function (inIndex, prevOutScript, hashType) { + typeforce(types.tuple(types.UInt32, types.Buffer, /* types.UInt8 */ types.Number), arguments) + + // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L29 + if (inIndex >= this.ins.length) return ONE + + // ignore OP_CODESEPARATOR + var ourScript = bscript.compile(bscript.decompile(prevOutScript).filter(function (x) { + return x !== opcodes.OP_CODESEPARATOR + })) + + var txTmp = this.clone() + + // SIGHASH_NONE: ignore all outputs? (wildcard payee) + if ((hashType & 0x1f) === Transaction.SIGHASH_NONE) { + txTmp.outs = [] + + // ignore sequence numbers (except at inIndex) + txTmp.ins.forEach(function (input, i) { + if (i === inIndex) return + + input.sequence = 0 + }) + + // SIGHASH_SINGLE: ignore all outputs, except at the same index? + } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE) { + // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L60 + if (inIndex >= this.outs.length) return ONE + + // truncate outputs after + txTmp.outs.length = inIndex + 1 + + // "blank" outputs before + for (var i = 0; i < inIndex; i++) { + txTmp.outs[i] = BLANK_OUTPUT + } + + // ignore sequence numbers (except at inIndex) + txTmp.ins.forEach(function (input, y) { + if (y === inIndex) return + + input.sequence = 0 + }) + } + + // SIGHASH_ANYONECANPAY: ignore inputs entirely? + if (hashType & Transaction.SIGHASH_ANYONECANPAY) { + txTmp.ins = [txTmp.ins[inIndex]] + txTmp.ins[0].script = ourScript + + // SIGHASH_ALL: only ignore input scripts + } else { + // "blank" others input scripts + txTmp.ins.forEach(function (input) { input.script = EMPTY_SCRIPT }) + txTmp.ins[inIndex].script = ourScript + } + + // serialize and hash + var buffer = Buffer.allocUnsafe(txTmp.__byteLength(false) + 4) + buffer.writeInt32LE(hashType, buffer.length - 4) + txTmp.__toBuffer(buffer, 0, false) + + return bcrypto.hash256(buffer) +} + +Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, value, hashType) { + typeforce(types.tuple(types.UInt32, types.Buffer, types.Satoshi, types.UInt32), arguments) + + var tbuffer, toffset + function writeSlice (slice) { toffset += slice.copy(tbuffer, toffset) } + function writeUInt32 (i) { toffset = tbuffer.writeUInt32LE(i, toffset) } + function writeUInt64 (i) { toffset = bufferutils.writeUInt64LE(tbuffer, i, toffset) } + function writeVarInt (i) { + varuint.encode(i, tbuffer, toffset) + toffset += varuint.encode.bytes + } + function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) } + + var hashOutputs = ZERO + var hashPrevouts = ZERO + var hashSequence = ZERO + + if (!(hashType & Transaction.SIGHASH_ANYONECANPAY)) { + tbuffer = Buffer.allocUnsafe(36 * this.ins.length) + toffset = 0 + + this.ins.forEach(function (txIn) { + writeSlice(txIn.hash) + writeUInt32(txIn.index) + }) + + hashPrevouts = bcrypto.hash256(tbuffer) + } + + if (!(hashType & Transaction.SIGHASH_ANYONECANPAY) && + (hashType & 0x1f) !== Transaction.SIGHASH_SINGLE && + (hashType & 0x1f) !== Transaction.SIGHASH_NONE) { + tbuffer = Buffer.allocUnsafe(4 * this.ins.length) + toffset = 0 + + this.ins.forEach(function (txIn) { + writeUInt32(txIn.sequence) + }) + + hashSequence = bcrypto.hash256(tbuffer) + } + + if ((hashType & 0x1f) !== Transaction.SIGHASH_SINGLE && + (hashType & 0x1f) !== Transaction.SIGHASH_NONE) { + var txOutsSize = this.outs.reduce(function (sum, output) { + return sum + 8 + varSliceSize(output.script) + }, 0) + + tbuffer = Buffer.allocUnsafe(txOutsSize) + toffset = 0 + + this.outs.forEach(function (out) { + writeUInt64(out.value) + writeVarSlice(out.script) + }) + + hashOutputs = bcrypto.hash256(tbuffer) + } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE && inIndex < this.outs.length) { + var output = this.outs[inIndex] + + tbuffer = Buffer.allocUnsafe(8 + varSliceSize(output.script)) + toffset = 0 + writeUInt64(output.value) + writeVarSlice(output.script) + + hashOutputs = bcrypto.hash256(tbuffer) + } + + tbuffer = Buffer.allocUnsafe(156 + varSliceSize(prevOutScript)) + toffset = 0 + + var input = this.ins[inIndex] + writeUInt32(this.version) + writeSlice(hashPrevouts) + writeSlice(hashSequence) + writeSlice(input.hash) + writeUInt32(input.index) + writeVarSlice(prevOutScript) + writeUInt64(value) + writeUInt32(input.sequence) + writeSlice(hashOutputs) + writeUInt32(this.locktime) + writeUInt32(hashType) + return bcrypto.hash256(tbuffer) +} + +Transaction.prototype.getHash = function () { + return bcrypto.hash256(this.__toBuffer(undefined, undefined, false)) +} + +Transaction.prototype.getId = function () { + // transaction hash's are displayed in reverse order + return this.getHash().reverse().toString('hex') +} + +Transaction.prototype.toBuffer = function (buffer, initialOffset) { + return this.__toBuffer(buffer, initialOffset, true) +} + +Transaction.prototype.__toBuffer = function (buffer, initialOffset, __allowWitness) { + if (!buffer) buffer = Buffer.allocUnsafe(this.__byteLength(__allowWitness)) + + var offset = initialOffset || 0 + function writeSlice (slice) { offset += slice.copy(buffer, offset) } + function writeUInt8 (i) { offset = buffer.writeUInt8(i, offset) } + function writeUInt32 (i) { offset = buffer.writeUInt32LE(i, offset) } + function writeInt32 (i) { offset = buffer.writeInt32LE(i, offset) } + function writeUInt64 (i) { offset = bufferutils.writeUInt64LE(buffer, i, offset) } + function writeVarInt (i) { + varuint.encode(i, buffer, offset) + offset += varuint.encode.bytes + } + function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) } + function writeVector (vector) { writeVarInt(vector.length); vector.forEach(writeVarSlice) } + + writeInt32(this.version) + + var hasWitnesses = __allowWitness && this.hasWitnesses() + + if (hasWitnesses) { + writeUInt8(Transaction.ADVANCED_TRANSACTION_MARKER) + writeUInt8(Transaction.ADVANCED_TRANSACTION_FLAG) + } + + writeVarInt(this.ins.length) + + this.ins.forEach(function (txIn) { + writeSlice(txIn.hash) + writeUInt32(txIn.index) + writeVarSlice(txIn.script) + writeUInt32(txIn.sequence) + }) + + writeVarInt(this.outs.length) + this.outs.forEach(function (txOut) { + if (!txOut.valueBuffer) { + writeUInt64(txOut.value) + } else { + writeSlice(txOut.valueBuffer) + } + + writeVarSlice(txOut.script) + }) + + if (hasWitnesses) { + this.ins.forEach(function (input) { + writeVector(input.witness) + }) + } + + writeUInt32(this.locktime) + + // avoid slicing unless necessary + if (initialOffset !== undefined) return buffer.slice(initialOffset, offset) + return buffer +} + +Transaction.prototype.toHex = function () { + return this.toBuffer().toString('hex') +} + +Transaction.prototype.setInputScript = function (index, scriptSig) { + typeforce(types.tuple(types.Number, types.Buffer), arguments) + + this.ins[index].script = scriptSig +} + +Transaction.prototype.setWitness = function (index, witness) { + typeforce(types.tuple(types.Number, [types.Buffer]), arguments) + + this.ins[index].witness = witness +} + +module.exports = Transaction + +},{"./bufferutils":73,"./crypto":74,"./script":81,"./types":107,"bitcoin-ops":69,"safe-buffer":742,"typeforce":816,"varuint-bitcoin":830}],106:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var baddress = require('./address') +var bcrypto = require('./crypto') +var bscript = require('./script') +var btemplates = require('./templates') +var networks = require('./networks') +var ops = require('bitcoin-ops') +var typeforce = require('typeforce') +var types = require('./types') +var scriptTypes = btemplates.types +var SIGNABLE = [btemplates.types.P2PKH, btemplates.types.P2PK, btemplates.types.MULTISIG] +var P2SH = SIGNABLE.concat([btemplates.types.P2WPKH, btemplates.types.P2WSH]) + +var ECPair = require('./ecpair') +var ECSignature = require('./ecsignature') +var Transaction = require('./transaction') + +function supportedType (type) { + return SIGNABLE.indexOf(type) !== -1 +} + +function supportedP2SHType (type) { + return P2SH.indexOf(type) !== -1 +} + +function extractChunks (type, chunks, script) { + var pubKeys = [] + var signatures = [] + switch (type) { + case scriptTypes.P2PKH: + // if (redeemScript) throw new Error('Nonstandard... P2SH(P2PKH)') + pubKeys = chunks.slice(1) + signatures = chunks.slice(0, 1) + break + + case scriptTypes.P2PK: + pubKeys[0] = script ? btemplates.pubKey.output.decode(script) : undefined + signatures = chunks.slice(0, 1) + break + + case scriptTypes.MULTISIG: + if (script) { + var multisig = btemplates.multisig.output.decode(script) + pubKeys = multisig.pubKeys + } + + signatures = chunks.slice(1).map(function (chunk) { + return chunk.length === 0 ? undefined : chunk + }) + break + } + + return { + pubKeys: pubKeys, + signatures: signatures + } +} +function expandInput (scriptSig, witnessStack) { + if (scriptSig.length === 0 && witnessStack.length === 0) return {} + + var prevOutScript + var prevOutType + var scriptType + var script + var redeemScript + var witnessScript + var witnessScriptType + var redeemScriptType + var witness = false + var p2wsh = false + var p2sh = false + var witnessProgram + var chunks + + var scriptSigChunks = bscript.decompile(scriptSig) + var sigType = btemplates.classifyInput(scriptSigChunks, true) + if (sigType === scriptTypes.P2SH) { + p2sh = true + redeemScript = scriptSigChunks[scriptSigChunks.length - 1] + redeemScriptType = btemplates.classifyOutput(redeemScript) + prevOutScript = btemplates.scriptHash.output.encode(bcrypto.hash160(redeemScript)) + prevOutType = scriptTypes.P2SH + script = redeemScript + } + + var classifyWitness = btemplates.classifyWitness(witnessStack, true) + if (classifyWitness === scriptTypes.P2WSH) { + witnessScript = witnessStack[witnessStack.length - 1] + witnessScriptType = btemplates.classifyOutput(witnessScript) + p2wsh = true + witness = true + if (scriptSig.length === 0) { + prevOutScript = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript)) + prevOutType = scriptTypes.P2WSH + if (redeemScript !== undefined) { + throw new Error('Redeem script given when unnecessary') + } + // bare witness + } else { + if (!redeemScript) { + throw new Error('No redeemScript provided for P2WSH, but scriptSig non-empty') + } + witnessProgram = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript)) + if (!redeemScript.equals(witnessProgram)) { + throw new Error('Redeem script didn\'t match witnessScript') + } + } + + if (!supportedType(btemplates.classifyOutput(witnessScript))) { + throw new Error('unsupported witness script') + } + + script = witnessScript + scriptType = witnessScriptType + chunks = witnessStack.slice(0, -1) + } else if (classifyWitness === scriptTypes.P2WPKH) { + witness = true + var key = witnessStack[witnessStack.length - 1] + var keyHash = bcrypto.hash160(key) + if (scriptSig.length === 0) { + prevOutScript = btemplates.witnessPubKeyHash.output.encode(keyHash) + prevOutType = scriptTypes.P2WPKH + if (typeof redeemScript !== 'undefined') { + throw new Error('Redeem script given when unnecessary') + } + } else { + if (!redeemScript) { + throw new Error('No redeemScript provided for P2WPKH, but scriptSig wasn\'t empty') + } + witnessProgram = btemplates.witnessPubKeyHash.output.encode(keyHash) + if (!redeemScript.equals(witnessProgram)) { + throw new Error('Redeem script did not have the right witness program') + } + } + + scriptType = scriptTypes.P2PKH + chunks = witnessStack + } else if (redeemScript) { + if (!supportedP2SHType(redeemScriptType)) { + throw new Error('Bad redeemscript!') + } + + script = redeemScript + scriptType = redeemScriptType + chunks = scriptSigChunks.slice(0, -1) + } else { + prevOutType = scriptType = btemplates.classifyInput(scriptSig) + chunks = scriptSigChunks + } + + var expanded = extractChunks(scriptType, chunks, script) + + var result = { + pubKeys: expanded.pubKeys, + signatures: expanded.signatures, + prevOutScript: prevOutScript, + prevOutType: prevOutType, + signType: scriptType, + signScript: script, + witness: Boolean(witness) + } + + if (p2sh) { + result.redeemScript = redeemScript + result.redeemScriptType = redeemScriptType + } + + if (p2wsh) { + result.witnessScript = witnessScript + result.witnessScriptType = witnessScriptType + } + + return result +} + +// could be done in expandInput, but requires the original Transaction for hashForSignature +function fixMultisigOrder (input, transaction, vin) { + if (input.redeemScriptType !== scriptTypes.MULTISIG || !input.redeemScript) return + if (input.pubKeys.length === input.signatures.length) return + + var unmatched = input.signatures.concat() + + input.signatures = input.pubKeys.map(function (pubKey) { + var keyPair = ECPair.fromPublicKeyBuffer(pubKey) + var match + + // check for a signature + unmatched.some(function (signature, i) { + // skip if undefined || OP_0 + if (!signature) return false + + // TODO: avoid O(n) hashForSignature + var parsed = ECSignature.parseScriptSignature(signature) + var hash = transaction.hashForSignature(vin, input.redeemScript, parsed.hashType) + + // skip if signature does not match pubKey + if (!keyPair.verify(hash, parsed.signature)) return false + + // remove matched signature from unmatched + unmatched[i] = undefined + match = signature + + return true + }) + + return match + }) +} + +function expandOutput (script, scriptType, ourPubKey) { + typeforce(types.Buffer, script) + + var scriptChunks = bscript.decompile(script) + if (!scriptType) { + scriptType = btemplates.classifyOutput(script) + } + + var pubKeys = [] + + switch (scriptType) { + // does our hash160(pubKey) match the output scripts? + case scriptTypes.P2PKH: + if (!ourPubKey) break + + var pkh1 = scriptChunks[2] + var pkh2 = bcrypto.hash160(ourPubKey) + if (pkh1.equals(pkh2)) pubKeys = [ourPubKey] + break + + // does our hash160(pubKey) match the output scripts? + case scriptTypes.P2WPKH: + if (!ourPubKey) break + + var wpkh1 = scriptChunks[1] + var wpkh2 = bcrypto.hash160(ourPubKey) + if (wpkh1.equals(wpkh2)) pubKeys = [ourPubKey] + break + + case scriptTypes.P2PK: + pubKeys = scriptChunks.slice(0, 1) + break + + case scriptTypes.MULTISIG: + pubKeys = scriptChunks.slice(1, -2) + break + + default: return { scriptType: scriptType } + } + + return { + pubKeys: pubKeys, + scriptType: scriptType, + signatures: pubKeys.map(function () { return undefined }) + } +} + +function checkP2SHInput (input, redeemScriptHash) { + if (input.prevOutType) { + if (input.prevOutType !== scriptTypes.P2SH) throw new Error('PrevOutScript must be P2SH') + + var prevOutScriptScriptHash = bscript.decompile(input.prevOutScript)[1] + if (!prevOutScriptScriptHash.equals(redeemScriptHash)) throw new Error('Inconsistent hash160(RedeemScript)') + } +} + +function checkP2WSHInput (input, witnessScriptHash) { + if (input.prevOutType) { + if (input.prevOutType !== scriptTypes.P2WSH) throw new Error('PrevOutScript must be P2WSH') + + var scriptHash = bscript.decompile(input.prevOutScript)[1] + if (!scriptHash.equals(witnessScriptHash)) throw new Error('Inconsistent sha25(WitnessScript)') + } +} + +function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScript) { + var expanded + var prevOutType + var prevOutScript + + var p2sh = false + var p2shType + var redeemScriptHash + + var witness = false + var p2wsh = false + var witnessType + var witnessScriptHash + + var signType + var signScript + + if (redeemScript && witnessScript) { + redeemScriptHash = bcrypto.hash160(redeemScript) + witnessScriptHash = bcrypto.sha256(witnessScript) + checkP2SHInput(input, redeemScriptHash) + + if (!redeemScript.equals(btemplates.witnessScriptHash.output.encode(witnessScriptHash))) throw new Error('Witness script inconsistent with redeem script') + + expanded = expandOutput(witnessScript, undefined, kpPubKey) + if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"') + + prevOutType = btemplates.types.P2SH + prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash) + p2sh = witness = p2wsh = true + p2shType = btemplates.types.P2WSH + signType = witnessType = expanded.scriptType + signScript = witnessScript + } else if (redeemScript) { + redeemScriptHash = bcrypto.hash160(redeemScript) + checkP2SHInput(input, redeemScriptHash) + + expanded = expandOutput(redeemScript, undefined, kpPubKey) + if (!expanded.pubKeys) throw new Error('RedeemScript not supported "' + bscript.toASM(redeemScript) + '"') + + prevOutType = btemplates.types.P2SH + prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash) + p2sh = true + signType = p2shType = expanded.scriptType + signScript = redeemScript + witness = signType === btemplates.types.P2WPKH + } else if (witnessScript) { + witnessScriptHash = bcrypto.sha256(witnessScript) + checkP2WSHInput(input, witnessScriptHash) + + expanded = expandOutput(witnessScript, undefined, kpPubKey) + if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"') + + prevOutType = btemplates.types.P2WSH + prevOutScript = btemplates.witnessScriptHash.output.encode(witnessScriptHash) + witness = p2wsh = true + signType = witnessType = expanded.scriptType + signScript = witnessScript + } else if (input.prevOutType) { + // embedded scripts are not possible without a redeemScript + if (input.prevOutType === scriptTypes.P2SH || + input.prevOutType === scriptTypes.P2WSH) { + throw new Error('PrevOutScript is ' + input.prevOutType + ', requires redeemScript') + } + + prevOutType = input.prevOutType + prevOutScript = input.prevOutScript + expanded = expandOutput(input.prevOutScript, input.prevOutType, kpPubKey) + if (!expanded.pubKeys) return + + witness = (input.prevOutType === scriptTypes.P2WPKH) + signType = prevOutType + signScript = prevOutScript + } else { + prevOutScript = btemplates.pubKeyHash.output.encode(bcrypto.hash160(kpPubKey)) + expanded = expandOutput(prevOutScript, scriptTypes.P2PKH, kpPubKey) + + prevOutType = scriptTypes.P2PKH + witness = false + signType = prevOutType + signScript = prevOutScript + } + + if (signType === scriptTypes.P2WPKH) { + signScript = btemplates.pubKeyHash.output.encode(btemplates.witnessPubKeyHash.output.decode(signScript)) + } + + if (p2sh) { + input.redeemScript = redeemScript + input.redeemScriptType = p2shType + } + + if (p2wsh) { + input.witnessScript = witnessScript + input.witnessScriptType = witnessType + } + + input.pubKeys = expanded.pubKeys + input.signatures = expanded.signatures + input.signScript = signScript + input.signType = signType + input.prevOutScript = prevOutScript + input.prevOutType = prevOutType + input.witness = witness +} + +function buildStack (type, signatures, pubKeys, allowIncomplete) { + if (type === scriptTypes.P2PKH) { + if (signatures.length === 1 && Buffer.isBuffer(signatures[0]) && pubKeys.length === 1) return btemplates.pubKeyHash.input.encodeStack(signatures[0], pubKeys[0]) + } else if (type === scriptTypes.P2PK) { + if (signatures.length === 1 && Buffer.isBuffer(signatures[0])) return btemplates.pubKey.input.encodeStack(signatures[0]) + } else if (type === scriptTypes.MULTISIG) { + if (signatures.length > 0) { + signatures = signatures.map(function (signature) { + return signature || ops.OP_0 + }) + if (!allowIncomplete) { + // remove blank signatures + signatures = signatures.filter(function (x) { return x !== ops.OP_0 }) + } + + return btemplates.multisig.input.encodeStack(signatures) + } + } else { + throw new Error('Not yet supported') + } + + if (!allowIncomplete) throw new Error('Not enough signatures provided') + return [] +} + +function buildInput (input, allowIncomplete) { + var scriptType = input.prevOutType + var sig = [] + var witness = [] + + if (supportedType(scriptType)) { + sig = buildStack(scriptType, input.signatures, input.pubKeys, allowIncomplete) + } + + var p2sh = false + if (scriptType === btemplates.types.P2SH) { + // We can remove this error later when we have a guarantee prepareInput + // rejects unsignable scripts - it MUST be signable at this point. + if (!allowIncomplete && !supportedP2SHType(input.redeemScriptType)) { + throw new Error('Impossible to sign this type') + } + + if (supportedType(input.redeemScriptType)) { + sig = buildStack(input.redeemScriptType, input.signatures, input.pubKeys, allowIncomplete) + } + + // If it wasn't SIGNABLE, it's witness, defer to that + if (input.redeemScriptType) { + p2sh = true + scriptType = input.redeemScriptType + } + } + + switch (scriptType) { + // P2WPKH is a special case of P2PKH + case btemplates.types.P2WPKH: + witness = buildStack(btemplates.types.P2PKH, input.signatures, input.pubKeys, allowIncomplete) + break + + case btemplates.types.P2WSH: + // We can remove this check later + if (!allowIncomplete && !supportedType(input.witnessScriptType)) { + throw new Error('Impossible to sign this type') + } + + if (supportedType(input.witnessScriptType)) { + witness = buildStack(input.witnessScriptType, input.signatures, input.pubKeys, allowIncomplete) + witness.push(input.witnessScript) + scriptType = input.witnessScriptType + } + + break + } + + // append redeemScript if necessary + if (p2sh) { + sig.push(input.redeemScript) + } + + return { + type: scriptType, + script: bscript.compile(sig), + witness: witness + } +} + +function TransactionBuilder (network, maximumFeeRate) { + this.prevTxMap = {} + this.network = network || networks.bitcoin + + // WARNING: This is __NOT__ to be relied on, its just another potential safety mechanism (safety in-depth) + this.maximumFeeRate = maximumFeeRate || 2500 + + this.inputs = [] + this.tx = new Transaction() +} + +TransactionBuilder.prototype.setLockTime = function (locktime) { + typeforce(types.UInt32, locktime) + + // if any signatures exist, throw + if (this.inputs.some(function (input) { + if (!input.signatures) return false + + return input.signatures.some(function (s) { return s }) + })) { + throw new Error('No, this would invalidate signatures') + } + + this.tx.locktime = locktime +} + +TransactionBuilder.prototype.setVersion = function (version) { + typeforce(types.UInt32, version) + + // XXX: this might eventually become more complex depending on what the versions represent + this.tx.version = version +} + +TransactionBuilder.fromTransaction = function (transaction, network) { + var txb = new TransactionBuilder(network) + + // Copy transaction fields + txb.setVersion(transaction.version) + txb.setLockTime(transaction.locktime) + + // Copy outputs (done first to avoid signature invalidation) + transaction.outs.forEach(function (txOut) { + txb.addOutput(txOut.script, txOut.value) + }) + + // Copy inputs + transaction.ins.forEach(function (txIn) { + txb.__addInputUnsafe(txIn.hash, txIn.index, { + sequence: txIn.sequence, + script: txIn.script, + witness: txIn.witness + }) + }) + + // fix some things not possible through the public API + txb.inputs.forEach(function (input, i) { + fixMultisigOrder(input, transaction, i) + }) + + return txb +} + +TransactionBuilder.prototype.addInput = function (txHash, vout, sequence, prevOutScript) { + if (!this.__canModifyInputs()) { + throw new Error('No, this would invalidate signatures') + } + + var value + + // is it a hex string? + if (typeof txHash === 'string') { + // transaction hashs's are displayed in reverse order, un-reverse it + txHash = Buffer.from(txHash, 'hex').reverse() + + // is it a Transaction object? + } else if (txHash instanceof Transaction) { + var txOut = txHash.outs[vout] + prevOutScript = txOut.script + value = txOut.value + + txHash = txHash.getHash() + } + + return this.__addInputUnsafe(txHash, vout, { + sequence: sequence, + prevOutScript: prevOutScript, + value: value + }) +} + +TransactionBuilder.prototype.__addInputUnsafe = function (txHash, vout, options) { + if (Transaction.isCoinbaseHash(txHash)) { + throw new Error('coinbase inputs not supported') + } + + var prevTxOut = txHash.toString('hex') + ':' + vout + if (this.prevTxMap[prevTxOut] !== undefined) throw new Error('Duplicate TxOut: ' + prevTxOut) + + var input = {} + + // derive what we can from the scriptSig + if (options.script !== undefined) { + input = expandInput(options.script, options.witness || []) + } + + // if an input value was given, retain it + if (options.value !== undefined) { + input.value = options.value + } + + // derive what we can from the previous transactions output script + if (!input.prevOutScript && options.prevOutScript) { + var prevOutType + + if (!input.pubKeys && !input.signatures) { + var expanded = expandOutput(options.prevOutScript) + + if (expanded.pubKeys) { + input.pubKeys = expanded.pubKeys + input.signatures = expanded.signatures + } + + prevOutType = expanded.scriptType + } + + input.prevOutScript = options.prevOutScript + input.prevOutType = prevOutType || btemplates.classifyOutput(options.prevOutScript) + } + + var vin = this.tx.addInput(txHash, vout, options.sequence, options.scriptSig) + this.inputs[vin] = input + this.prevTxMap[prevTxOut] = vin + return vin +} + +TransactionBuilder.prototype.addOutput = function (scriptPubKey, value) { + if (!this.__canModifyOutputs()) { + throw new Error('No, this would invalidate signatures') + } + + // Attempt to get a script if it's a base58 address string + if (typeof scriptPubKey === 'string') { + scriptPubKey = baddress.toOutputScript(scriptPubKey, this.network) + } + + return this.tx.addOutput(scriptPubKey, value) +} + +TransactionBuilder.prototype.build = function () { + return this.__build(false) +} +TransactionBuilder.prototype.buildIncomplete = function () { + return this.__build(true) +} + +TransactionBuilder.prototype.__build = function (allowIncomplete) { + if (!allowIncomplete) { + if (!this.tx.ins.length) throw new Error('Transaction has no inputs') + if (!this.tx.outs.length) throw new Error('Transaction has no outputs') + } + + var tx = this.tx.clone() + // Create script signatures from inputs + this.inputs.forEach(function (input, i) { + var scriptType = input.witnessScriptType || input.redeemScriptType || input.prevOutType + if (!scriptType && !allowIncomplete) throw new Error('Transaction is not complete') + var result = buildInput(input, allowIncomplete) + + // skip if no result + if (!allowIncomplete) { + if (!supportedType(result.type) && result.type !== btemplates.types.P2WPKH) { + throw new Error(result.type + ' not supported') + } + } + + tx.setInputScript(i, result.script) + tx.setWitness(i, result.witness) + }) + + if (!allowIncomplete) { + // do not rely on this, its merely a last resort + if (this.__overMaximumFees(tx.virtualSize())) { + throw new Error('Transaction has absurd fees') + } + } + + return tx +} + +function canSign (input) { + return input.prevOutScript !== undefined && + input.signScript !== undefined && + input.pubKeys !== undefined && + input.signatures !== undefined && + input.signatures.length === input.pubKeys.length && + input.pubKeys.length > 0 && + ( + input.witness === false || + (input.witness === true && input.value !== undefined) + ) +} + +TransactionBuilder.prototype.sign = function (vin, keyPair, redeemScript, hashType, witnessValue, witnessScript) { + // TODO: remove keyPair.network matching in 4.0.0 + if (keyPair.network && keyPair.network !== this.network) throw new TypeError('Inconsistent network') + if (!this.inputs[vin]) throw new Error('No input at index: ' + vin) + hashType = hashType || Transaction.SIGHASH_ALL + + var input = this.inputs[vin] + + // if redeemScript was previously provided, enforce consistency + if (input.redeemScript !== undefined && + redeemScript && + !input.redeemScript.equals(redeemScript)) { + throw new Error('Inconsistent redeemScript') + } + + var kpPubKey = keyPair.publicKey || keyPair.getPublicKeyBuffer() + if (!canSign(input)) { + if (witnessValue !== undefined) { + if (input.value !== undefined && input.value !== witnessValue) throw new Error('Input didn\'t match witnessValue') + typeforce(types.Satoshi, witnessValue) + input.value = witnessValue + } + + if (!canSign(input)) prepareInput(input, kpPubKey, redeemScript, witnessValue, witnessScript) + if (!canSign(input)) throw Error(input.prevOutType + ' not supported') + } + + // ready to sign + var signatureHash + if (input.witness) { + signatureHash = this.tx.hashForWitnessV0(vin, input.signScript, input.value, hashType) + } else { + signatureHash = this.tx.hashForSignature(vin, input.signScript, hashType) + } + + // enforce in order signing of public keys + var signed = input.pubKeys.some(function (pubKey, i) { + if (!kpPubKey.equals(pubKey)) return false + if (input.signatures[i]) throw new Error('Signature already exists') + if (kpPubKey.length !== 33 && + input.signType === scriptTypes.P2WPKH) throw new Error('BIP143 rejects uncompressed public keys in P2WPKH or P2WSH') + + var signature = keyPair.sign(signatureHash) + if (Buffer.isBuffer(signature)) signature = ECSignature.fromRSBuffer(signature) + + input.signatures[i] = signature.toScriptSignature(hashType) + return true + }) + + if (!signed) throw new Error('Key pair cannot sign for this input') +} + +function signatureHashType (buffer) { + return buffer.readUInt8(buffer.length - 1) +} + +TransactionBuilder.prototype.__canModifyInputs = function () { + return this.inputs.every(function (input) { + // any signatures? + if (input.signatures === undefined) return true + + return input.signatures.every(function (signature) { + if (!signature) return true + var hashType = signatureHashType(signature) + + // if SIGHASH_ANYONECANPAY is set, signatures would not + // be invalidated by more inputs + return hashType & Transaction.SIGHASH_ANYONECANPAY + }) + }) +} + +TransactionBuilder.prototype.__canModifyOutputs = function () { + var nInputs = this.tx.ins.length + var nOutputs = this.tx.outs.length + + return this.inputs.every(function (input) { + if (input.signatures === undefined) return true + + return input.signatures.every(function (signature) { + if (!signature) return true + var hashType = signatureHashType(signature) + + var hashTypeMod = hashType & 0x1f + if (hashTypeMod === Transaction.SIGHASH_NONE) return true + if (hashTypeMod === Transaction.SIGHASH_SINGLE) { + // if SIGHASH_SINGLE is set, and nInputs > nOutputs + // some signatures would be invalidated by the addition + // of more outputs + return nInputs <= nOutputs + } + }) + }) +} + +TransactionBuilder.prototype.__overMaximumFees = function (bytes) { + // not all inputs will have .value defined + var incoming = this.inputs.reduce(function (a, x) { return a + (x.value >>> 0) }, 0) + + // but all outputs do, and if we have any input value + // we can immediately determine if the outputs are too small + var outgoing = this.tx.outs.reduce(function (a, x) { return a + x.value }, 0) + var fee = incoming - outgoing + var feeRate = fee / bytes + + return feeRate > this.maximumFeeRate +} + +module.exports = TransactionBuilder + +},{"./address":71,"./crypto":74,"./ecpair":76,"./ecsignature":77,"./networks":80,"./script":81,"./templates":83,"./transaction":105,"./types":107,"bitcoin-ops":69,"safe-buffer":742,"typeforce":816}],107:[function(require,module,exports){ +var typeforce = require('typeforce') + +var UINT31_MAX = Math.pow(2, 31) - 1 +function UInt31 (value) { + return typeforce.UInt32(value) && value <= UINT31_MAX +} + +function BIP32Path (value) { + return typeforce.String(value) && value.match(/^(m\/)?(\d+'?\/)*\d+'?$/) +} +BIP32Path.toJSON = function () { return 'BIP32 derivation path' } + +var SATOSHI_MAX = 21 * 1e14 +function Satoshi (value) { + return typeforce.UInt53(value) && value <= SATOSHI_MAX +} + +// external dependent types +var BigInt = typeforce.quacksLike('BigInteger') +var ECPoint = typeforce.quacksLike('Point') + +// exposed, external API +var ECSignature = typeforce.compile({ r: BigInt, s: BigInt }) +var Network = typeforce.compile({ + messagePrefix: typeforce.oneOf(typeforce.Buffer, typeforce.String), + bip32: { + public: typeforce.UInt32, + private: typeforce.UInt32 + }, + // see https://github.com/iancoleman/bip39/pull/212 + pubKeyHash: typeforce.oneOf(typeforce.UInt8, typeforce.UInt16), + scriptHash: typeforce.oneOf(typeforce.UInt8, typeforce.UInt16), + wif: typeforce.UInt8 +}) + +// extend typeforce types with ours +var types = { + BigInt: BigInt, + BIP32Path: BIP32Path, + Buffer256bit: typeforce.BufferN(32), + ECPoint: ECPoint, + ECSignature: ECSignature, + Hash160bit: typeforce.BufferN(20), + Hash256bit: typeforce.BufferN(32), + Network: Network, + Satoshi: Satoshi, + UInt31: UInt31 +} + +for (var typeName in typeforce) { + types[typeName] = typeforce[typeName] +} + +module.exports = types + +},{"typeforce":816}],108:[function(require,module,exports){ +(function (module, exports) { + 'use strict'; + + // Utils + function assert (val, msg) { + if (!val) throw new Error(msg || 'Assertion failed'); + } + + // Could use `inherits` module, but don't want to move from single file + // architecture yet. + function inherits (ctor, superCtor) { + ctor.super_ = superCtor; + var TempCtor = function () {}; + TempCtor.prototype = superCtor.prototype; + ctor.prototype = new TempCtor(); + ctor.prototype.constructor = ctor; + } + + // BN + + function BN (number, base, endian) { + if (BN.isBN(number)) { + return number; + } + + this.negative = 0; + this.words = null; + this.length = 0; + + // Reduction context + this.red = null; + + if (number !== null) { + if (base === 'le' || base === 'be') { + endian = base; + base = 10; + } + + this._init(number || 0, base || 10, endian || 'be'); + } + } + if (typeof module === 'object') { + module.exports = BN; + } else { + exports.BN = BN; + } + + BN.BN = BN; + BN.wordSize = 26; + + var Buffer; + try { + Buffer = require('buffer').Buffer; + } catch (e) { + } + + BN.isBN = function isBN (num) { + if (num instanceof BN) { + return true; + } + + return num !== null && typeof num === 'object' && + num.constructor.wordSize === BN.wordSize && Array.isArray(num.words); + }; + + BN.max = function max (left, right) { + if (left.cmp(right) > 0) return left; + return right; + }; + + BN.min = function min (left, right) { + if (left.cmp(right) < 0) return left; + return right; + }; + + BN.prototype._init = function init (number, base, endian) { + if (typeof number === 'number') { + return this._initNumber(number, base, endian); + } + + if (typeof number === 'object') { + return this._initArray(number, base, endian); + } + + if (base === 'hex') { + base = 16; + } + assert(base === (base | 0) && base >= 2 && base <= 36); + + number = number.toString().replace(/\s+/g, ''); + var start = 0; + if (number[0] === '-') { + start++; + } + + if (base === 16) { + this._parseHex(number, start); + } else { + this._parseBase(number, base, start); + } + + if (number[0] === '-') { + this.negative = 1; + } + + this.strip(); + + if (endian !== 'le') return; + + this._initArray(this.toArray(), base, endian); + }; + + BN.prototype._initNumber = function _initNumber (number, base, endian) { + if (number < 0) { + this.negative = 1; + number = -number; + } + if (number < 0x4000000) { + this.words = [ number & 0x3ffffff ]; + this.length = 1; + } else if (number < 0x10000000000000) { + this.words = [ + number & 0x3ffffff, + (number / 0x4000000) & 0x3ffffff + ]; + this.length = 2; + } else { + assert(number < 0x20000000000000); // 2 ^ 53 (unsafe) + this.words = [ + number & 0x3ffffff, + (number / 0x4000000) & 0x3ffffff, + 1 + ]; + this.length = 3; + } + + if (endian !== 'le') return; + + // Reverse the bytes + this._initArray(this.toArray(), base, endian); + }; + + BN.prototype._initArray = function _initArray (number, base, endian) { + // Perhaps a Uint8Array + assert(typeof number.length === 'number'); + if (number.length <= 0) { + this.words = [ 0 ]; + this.length = 1; + return this; + } + + this.length = Math.ceil(number.length / 3); + this.words = new Array(this.length); + for (var i = 0; i < this.length; i++) { + this.words[i] = 0; + } + + var j, w; + var off = 0; + if (endian === 'be') { + for (i = number.length - 1, j = 0; i >= 0; i -= 3) { + w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16); + this.words[j] |= (w << off) & 0x3ffffff; + this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff; + off += 24; + if (off >= 26) { + off -= 26; + j++; + } + } + } else if (endian === 'le') { + for (i = 0, j = 0; i < number.length; i += 3) { + w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16); + this.words[j] |= (w << off) & 0x3ffffff; + this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff; + off += 24; + if (off >= 26) { + off -= 26; + j++; + } + } + } + return this.strip(); + }; + + function parseHex (str, start, end) { + var r = 0; + var len = Math.min(str.length, end); + for (var i = start; i < len; i++) { + var c = str.charCodeAt(i) - 48; + + r <<= 4; + + // 'a' - 'f' + if (c >= 49 && c <= 54) { + r |= c - 49 + 0xa; + + // 'A' - 'F' + } else if (c >= 17 && c <= 22) { + r |= c - 17 + 0xa; + + // '0' - '9' + } else { + r |= c & 0xf; + } + } + return r; + } + + BN.prototype._parseHex = function _parseHex (number, start) { + // Create possibly bigger array to ensure that it fits the number + this.length = Math.ceil((number.length - start) / 6); + this.words = new Array(this.length); + for (var i = 0; i < this.length; i++) { + this.words[i] = 0; + } + + var j, w; + // Scan 24-bit chunks and add them to the number + var off = 0; + for (i = number.length - 6, j = 0; i >= start; i -= 6) { + w = parseHex(number, i, i + 6); + this.words[j] |= (w << off) & 0x3ffffff; + // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb + this.words[j + 1] |= w >>> (26 - off) & 0x3fffff; + off += 24; + if (off >= 26) { + off -= 26; + j++; + } + } + if (i + 6 !== start) { + w = parseHex(number, start, i + 6); + this.words[j] |= (w << off) & 0x3ffffff; + this.words[j + 1] |= w >>> (26 - off) & 0x3fffff; + } + this.strip(); + }; + + function parseBase (str, start, end, mul) { + var r = 0; + var len = Math.min(str.length, end); + for (var i = start; i < len; i++) { + var c = str.charCodeAt(i) - 48; + + r *= mul; + + // 'a' + if (c >= 49) { + r += c - 49 + 0xa; + + // 'A' + } else if (c >= 17) { + r += c - 17 + 0xa; + + // '0' - '9' + } else { + r += c; + } + } + return r; + } + + BN.prototype._parseBase = function _parseBase (number, base, start) { + // Initialize as zero + this.words = [ 0 ]; + this.length = 1; + + // Find length of limb in base + for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) { + limbLen++; + } + limbLen--; + limbPow = (limbPow / base) | 0; + + var total = number.length - start; + var mod = total % limbLen; + var end = Math.min(total, total - mod) + start; + + var word = 0; + for (var i = start; i < end; i += limbLen) { + word = parseBase(number, i, i + limbLen, base); + + this.imuln(limbPow); + if (this.words[0] + word < 0x4000000) { + this.words[0] += word; + } else { + this._iaddn(word); + } + } + + if (mod !== 0) { + var pow = 1; + word = parseBase(number, i, number.length, base); + + for (i = 0; i < mod; i++) { + pow *= base; + } + + this.imuln(pow); + if (this.words[0] + word < 0x4000000) { + this.words[0] += word; + } else { + this._iaddn(word); + } + } + }; + + BN.prototype.copy = function copy (dest) { + dest.words = new Array(this.length); + for (var i = 0; i < this.length; i++) { + dest.words[i] = this.words[i]; + } + dest.length = this.length; + dest.negative = this.negative; + dest.red = this.red; + }; + + BN.prototype.clone = function clone () { + var r = new BN(null); + this.copy(r); + return r; + }; + + BN.prototype._expand = function _expand (size) { + while (this.length < size) { + this.words[this.length++] = 0; + } + return this; + }; + + // Remove leading `0` from `this` + BN.prototype.strip = function strip () { + while (this.length > 1 && this.words[this.length - 1] === 0) { + this.length--; + } + return this._normSign(); + }; + + BN.prototype._normSign = function _normSign () { + // -0 = 0 + if (this.length === 1 && this.words[0] === 0) { + this.negative = 0; + } + return this; + }; + + BN.prototype.inspect = function inspect () { + return (this.red ? ''; + }; + + /* + + var zeros = []; + var groupSizes = []; + var groupBases = []; + + var s = ''; + var i = -1; + while (++i < BN.wordSize) { + zeros[i] = s; + s += '0'; + } + groupSizes[0] = 0; + groupSizes[1] = 0; + groupBases[0] = 0; + groupBases[1] = 0; + var base = 2 - 1; + while (++base < 36 + 1) { + var groupSize = 0; + var groupBase = 1; + while (groupBase < (1 << BN.wordSize) / base) { + groupBase *= base; + groupSize += 1; + } + groupSizes[base] = groupSize; + groupBases[base] = groupBase; + } + + */ + + var zeros = [ + '', + '0', + '00', + '000', + '0000', + '00000', + '000000', + '0000000', + '00000000', + '000000000', + '0000000000', + '00000000000', + '000000000000', + '0000000000000', + '00000000000000', + '000000000000000', + '0000000000000000', + '00000000000000000', + '000000000000000000', + '0000000000000000000', + '00000000000000000000', + '000000000000000000000', + '0000000000000000000000', + '00000000000000000000000', + '000000000000000000000000', + '0000000000000000000000000' + ]; + + var groupSizes = [ + 0, 0, + 25, 16, 12, 11, 10, 9, 8, + 8, 7, 7, 7, 7, 6, 6, + 6, 6, 6, 6, 6, 5, 5, + 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5 + ]; + + var groupBases = [ + 0, 0, + 33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216, + 43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625, + 16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632, + 6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149, + 24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176 + ]; + + BN.prototype.toString = function toString (base, padding) { + base = base || 10; + padding = padding | 0 || 1; + + var out; + if (base === 16 || base === 'hex') { + out = ''; + var off = 0; + var carry = 0; + for (var i = 0; i < this.length; i++) { + var w = this.words[i]; + var word = (((w << off) | carry) & 0xffffff).toString(16); + carry = (w >>> (24 - off)) & 0xffffff; + if (carry !== 0 || i !== this.length - 1) { + out = zeros[6 - word.length] + word + out; + } else { + out = word + out; + } + off += 2; + if (off >= 26) { + off -= 26; + i--; + } + } + if (carry !== 0) { + out = carry.toString(16) + out; + } + while (out.length % padding !== 0) { + out = '0' + out; + } + if (this.negative !== 0) { + out = '-' + out; + } + return out; + } + + if (base === (base | 0) && base >= 2 && base <= 36) { + // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base)); + var groupSize = groupSizes[base]; + // var groupBase = Math.pow(base, groupSize); + var groupBase = groupBases[base]; + out = ''; + var c = this.clone(); + c.negative = 0; + while (!c.isZero()) { + var r = c.modn(groupBase).toString(base); + c = c.idivn(groupBase); + + if (!c.isZero()) { + out = zeros[groupSize - r.length] + r + out; + } else { + out = r + out; + } + } + if (this.isZero()) { + out = '0' + out; + } + while (out.length % padding !== 0) { + out = '0' + out; + } + if (this.negative !== 0) { + out = '-' + out; + } + return out; + } + + assert(false, 'Base should be between 2 and 36'); + }; + + BN.prototype.toNumber = function toNumber () { + var ret = this.words[0]; + if (this.length === 2) { + ret += this.words[1] * 0x4000000; + } else if (this.length === 3 && this.words[2] === 0x01) { + // NOTE: at this stage it is known that the top bit is set + ret += 0x10000000000000 + (this.words[1] * 0x4000000); + } else if (this.length > 2) { + assert(false, 'Number can only safely store up to 53 bits'); + } + return (this.negative !== 0) ? -ret : ret; + }; + + BN.prototype.toJSON = function toJSON () { + return this.toString(16); + }; + + BN.prototype.toBuffer = function toBuffer (endian, length) { + assert(typeof Buffer !== 'undefined'); + return this.toArrayLike(Buffer, endian, length); + }; + + BN.prototype.toArray = function toArray (endian, length) { + return this.toArrayLike(Array, endian, length); + }; + + BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) { + var byteLength = this.byteLength(); + var reqLength = length || Math.max(1, byteLength); + assert(byteLength <= reqLength, 'byte array longer than desired length'); + assert(reqLength > 0, 'Requested array length <= 0'); + + this.strip(); + var littleEndian = endian === 'le'; + var res = new ArrayType(reqLength); + + var b, i; + var q = this.clone(); + if (!littleEndian) { + // Assume big-endian + for (i = 0; i < reqLength - byteLength; i++) { + res[i] = 0; + } + + for (i = 0; !q.isZero(); i++) { + b = q.andln(0xff); + q.iushrn(8); + + res[reqLength - i - 1] = b; + } + } else { + for (i = 0; !q.isZero(); i++) { + b = q.andln(0xff); + q.iushrn(8); + + res[i] = b; + } + + for (; i < reqLength; i++) { + res[i] = 0; + } + } + + return res; + }; + + if (Math.clz32) { + BN.prototype._countBits = function _countBits (w) { + return 32 - Math.clz32(w); + }; + } else { + BN.prototype._countBits = function _countBits (w) { + var t = w; + var r = 0; + if (t >= 0x1000) { + r += 13; + t >>>= 13; + } + if (t >= 0x40) { + r += 7; + t >>>= 7; + } + if (t >= 0x8) { + r += 4; + t >>>= 4; + } + if (t >= 0x02) { + r += 2; + t >>>= 2; + } + return r + t; + }; + } + + BN.prototype._zeroBits = function _zeroBits (w) { + // Short-cut + if (w === 0) return 26; + + var t = w; + var r = 0; + if ((t & 0x1fff) === 0) { + r += 13; + t >>>= 13; + } + if ((t & 0x7f) === 0) { + r += 7; + t >>>= 7; + } + if ((t & 0xf) === 0) { + r += 4; + t >>>= 4; + } + if ((t & 0x3) === 0) { + r += 2; + t >>>= 2; + } + if ((t & 0x1) === 0) { + r++; + } + return r; + }; + + // Return number of used bits in a BN + BN.prototype.bitLength = function bitLength () { + var w = this.words[this.length - 1]; + var hi = this._countBits(w); + return (this.length - 1) * 26 + hi; + }; + + function toBitArray (num) { + var w = new Array(num.bitLength()); + + for (var bit = 0; bit < w.length; bit++) { + var off = (bit / 26) | 0; + var wbit = bit % 26; + + w[bit] = (num.words[off] & (1 << wbit)) >>> wbit; + } + + return w; + } + + // Number of trailing zero bits + BN.prototype.zeroBits = function zeroBits () { + if (this.isZero()) return 0; + + var r = 0; + for (var i = 0; i < this.length; i++) { + var b = this._zeroBits(this.words[i]); + r += b; + if (b !== 26) break; + } + return r; + }; + + BN.prototype.byteLength = function byteLength () { + return Math.ceil(this.bitLength() / 8); + }; + + BN.prototype.toTwos = function toTwos (width) { + if (this.negative !== 0) { + return this.abs().inotn(width).iaddn(1); + } + return this.clone(); + }; + + BN.prototype.fromTwos = function fromTwos (width) { + if (this.testn(width - 1)) { + return this.notn(width).iaddn(1).ineg(); + } + return this.clone(); + }; + + BN.prototype.isNeg = function isNeg () { + return this.negative !== 0; + }; + + // Return negative clone of `this` + BN.prototype.neg = function neg () { + return this.clone().ineg(); + }; + + BN.prototype.ineg = function ineg () { + if (!this.isZero()) { + this.negative ^= 1; + } + + return this; + }; + + // Or `num` with `this` in-place + BN.prototype.iuor = function iuor (num) { + while (this.length < num.length) { + this.words[this.length++] = 0; + } + + for (var i = 0; i < num.length; i++) { + this.words[i] = this.words[i] | num.words[i]; + } + + return this.strip(); + }; + + BN.prototype.ior = function ior (num) { + assert((this.negative | num.negative) === 0); + return this.iuor(num); + }; + + // Or `num` with `this` + BN.prototype.or = function or (num) { + if (this.length > num.length) return this.clone().ior(num); + return num.clone().ior(this); + }; + + BN.prototype.uor = function uor (num) { + if (this.length > num.length) return this.clone().iuor(num); + return num.clone().iuor(this); + }; + + // And `num` with `this` in-place + BN.prototype.iuand = function iuand (num) { + // b = min-length(num, this) + var b; + if (this.length > num.length) { + b = num; + } else { + b = this; + } + + for (var i = 0; i < b.length; i++) { + this.words[i] = this.words[i] & num.words[i]; + } + + this.length = b.length; + + return this.strip(); + }; + + BN.prototype.iand = function iand (num) { + assert((this.negative | num.negative) === 0); + return this.iuand(num); + }; + + // And `num` with `this` + BN.prototype.and = function and (num) { + if (this.length > num.length) return this.clone().iand(num); + return num.clone().iand(this); + }; + + BN.prototype.uand = function uand (num) { + if (this.length > num.length) return this.clone().iuand(num); + return num.clone().iuand(this); + }; + + // Xor `num` with `this` in-place + BN.prototype.iuxor = function iuxor (num) { + // a.length > b.length + var a; + var b; + if (this.length > num.length) { + a = this; + b = num; + } else { + a = num; + b = this; + } + + for (var i = 0; i < b.length; i++) { + this.words[i] = a.words[i] ^ b.words[i]; + } + + if (this !== a) { + for (; i < a.length; i++) { + this.words[i] = a.words[i]; + } + } + + this.length = a.length; + + return this.strip(); + }; + + BN.prototype.ixor = function ixor (num) { + assert((this.negative | num.negative) === 0); + return this.iuxor(num); + }; + + // Xor `num` with `this` + BN.prototype.xor = function xor (num) { + if (this.length > num.length) return this.clone().ixor(num); + return num.clone().ixor(this); + }; + + BN.prototype.uxor = function uxor (num) { + if (this.length > num.length) return this.clone().iuxor(num); + return num.clone().iuxor(this); + }; + + // Not ``this`` with ``width`` bitwidth + BN.prototype.inotn = function inotn (width) { + assert(typeof width === 'number' && width >= 0); + + var bytesNeeded = Math.ceil(width / 26) | 0; + var bitsLeft = width % 26; + + // Extend the buffer with leading zeroes + this._expand(bytesNeeded); + + if (bitsLeft > 0) { + bytesNeeded--; + } + + // Handle complete words + for (var i = 0; i < bytesNeeded; i++) { + this.words[i] = ~this.words[i] & 0x3ffffff; + } + + // Handle the residue + if (bitsLeft > 0) { + this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft)); + } + + // And remove leading zeroes + return this.strip(); + }; + + BN.prototype.notn = function notn (width) { + return this.clone().inotn(width); + }; + + // Set `bit` of `this` + BN.prototype.setn = function setn (bit, val) { + assert(typeof bit === 'number' && bit >= 0); + + var off = (bit / 26) | 0; + var wbit = bit % 26; + + this._expand(off + 1); + + if (val) { + this.words[off] = this.words[off] | (1 << wbit); + } else { + this.words[off] = this.words[off] & ~(1 << wbit); + } + + return this.strip(); + }; + + // Add `num` to `this` in-place + BN.prototype.iadd = function iadd (num) { + var r; + + // negative + positive + if (this.negative !== 0 && num.negative === 0) { + this.negative = 0; + r = this.isub(num); + this.negative ^= 1; + return this._normSign(); + + // positive + negative + } else if (this.negative === 0 && num.negative !== 0) { + num.negative = 0; + r = this.isub(num); + num.negative = 1; + return r._normSign(); + } + + // a.length > b.length + var a, b; + if (this.length > num.length) { + a = this; + b = num; + } else { + a = num; + b = this; + } + + var carry = 0; + for (var i = 0; i < b.length; i++) { + r = (a.words[i] | 0) + (b.words[i] | 0) + carry; + this.words[i] = r & 0x3ffffff; + carry = r >>> 26; + } + for (; carry !== 0 && i < a.length; i++) { + r = (a.words[i] | 0) + carry; + this.words[i] = r & 0x3ffffff; + carry = r >>> 26; + } + + this.length = a.length; + if (carry !== 0) { + this.words[this.length] = carry; + this.length++; + // Copy the rest of the words + } else if (a !== this) { + for (; i < a.length; i++) { + this.words[i] = a.words[i]; + } + } + + return this; + }; + + // Add `num` to `this` + BN.prototype.add = function add (num) { + var res; + if (num.negative !== 0 && this.negative === 0) { + num.negative = 0; + res = this.sub(num); + num.negative ^= 1; + return res; + } else if (num.negative === 0 && this.negative !== 0) { + this.negative = 0; + res = num.sub(this); + this.negative = 1; + return res; + } + + if (this.length > num.length) return this.clone().iadd(num); + + return num.clone().iadd(this); + }; + + // Subtract `num` from `this` in-place + BN.prototype.isub = function isub (num) { + // this - (-num) = this + num + if (num.negative !== 0) { + num.negative = 0; + var r = this.iadd(num); + num.negative = 1; + return r._normSign(); + + // -this - num = -(this + num) + } else if (this.negative !== 0) { + this.negative = 0; + this.iadd(num); + this.negative = 1; + return this._normSign(); + } + + // At this point both numbers are positive + var cmp = this.cmp(num); + + // Optimization - zeroify + if (cmp === 0) { + this.negative = 0; + this.length = 1; + this.words[0] = 0; + return this; + } + + // a > b + var a, b; + if (cmp > 0) { + a = this; + b = num; + } else { + a = num; + b = this; + } + + var carry = 0; + for (var i = 0; i < b.length; i++) { + r = (a.words[i] | 0) - (b.words[i] | 0) + carry; + carry = r >> 26; + this.words[i] = r & 0x3ffffff; + } + for (; carry !== 0 && i < a.length; i++) { + r = (a.words[i] | 0) + carry; + carry = r >> 26; + this.words[i] = r & 0x3ffffff; + } + + // Copy rest of the words + if (carry === 0 && i < a.length && a !== this) { + for (; i < a.length; i++) { + this.words[i] = a.words[i]; + } + } + + this.length = Math.max(this.length, i); + + if (a !== this) { + this.negative = 1; + } + + return this.strip(); + }; + + // Subtract `num` from `this` + BN.prototype.sub = function sub (num) { + return this.clone().isub(num); + }; + + function smallMulTo (self, num, out) { + out.negative = num.negative ^ self.negative; + var len = (self.length + num.length) | 0; + out.length = len; + len = (len - 1) | 0; + + // Peel one iteration (compiler can't do it, because of code complexity) + var a = self.words[0] | 0; + var b = num.words[0] | 0; + var r = a * b; + + var lo = r & 0x3ffffff; + var carry = (r / 0x4000000) | 0; + out.words[0] = lo; + + for (var k = 1; k < len; k++) { + // Sum all words with the same `i + j = k` and accumulate `ncarry`, + // note that ncarry could be >= 0x3ffffff + var ncarry = carry >>> 26; + var rword = carry & 0x3ffffff; + var maxJ = Math.min(k, num.length - 1); + for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) { + var i = (k - j) | 0; + a = self.words[i] | 0; + b = num.words[j] | 0; + r = a * b + rword; + ncarry += (r / 0x4000000) | 0; + rword = r & 0x3ffffff; + } + out.words[k] = rword | 0; + carry = ncarry | 0; + } + if (carry !== 0) { + out.words[k] = carry | 0; + } else { + out.length--; + } + + return out.strip(); + } + + // TODO(indutny): it may be reasonable to omit it for users who don't need + // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit + // multiplication (like elliptic secp256k1). + var comb10MulTo = function comb10MulTo (self, num, out) { + var a = self.words; + var b = num.words; + var o = out.words; + var c = 0; + var lo; + var mid; + var hi; + var a0 = a[0] | 0; + var al0 = a0 & 0x1fff; + var ah0 = a0 >>> 13; + var a1 = a[1] | 0; + var al1 = a1 & 0x1fff; + var ah1 = a1 >>> 13; + var a2 = a[2] | 0; + var al2 = a2 & 0x1fff; + var ah2 = a2 >>> 13; + var a3 = a[3] | 0; + var al3 = a3 & 0x1fff; + var ah3 = a3 >>> 13; + var a4 = a[4] | 0; + var al4 = a4 & 0x1fff; + var ah4 = a4 >>> 13; + var a5 = a[5] | 0; + var al5 = a5 & 0x1fff; + var ah5 = a5 >>> 13; + var a6 = a[6] | 0; + var al6 = a6 & 0x1fff; + var ah6 = a6 >>> 13; + var a7 = a[7] | 0; + var al7 = a7 & 0x1fff; + var ah7 = a7 >>> 13; + var a8 = a[8] | 0; + var al8 = a8 & 0x1fff; + var ah8 = a8 >>> 13; + var a9 = a[9] | 0; + var al9 = a9 & 0x1fff; + var ah9 = a9 >>> 13; + var b0 = b[0] | 0; + var bl0 = b0 & 0x1fff; + var bh0 = b0 >>> 13; + var b1 = b[1] | 0; + var bl1 = b1 & 0x1fff; + var bh1 = b1 >>> 13; + var b2 = b[2] | 0; + var bl2 = b2 & 0x1fff; + var bh2 = b2 >>> 13; + var b3 = b[3] | 0; + var bl3 = b3 & 0x1fff; + var bh3 = b3 >>> 13; + var b4 = b[4] | 0; + var bl4 = b4 & 0x1fff; + var bh4 = b4 >>> 13; + var b5 = b[5] | 0; + var bl5 = b5 & 0x1fff; + var bh5 = b5 >>> 13; + var b6 = b[6] | 0; + var bl6 = b6 & 0x1fff; + var bh6 = b6 >>> 13; + var b7 = b[7] | 0; + var bl7 = b7 & 0x1fff; + var bh7 = b7 >>> 13; + var b8 = b[8] | 0; + var bl8 = b8 & 0x1fff; + var bh8 = b8 >>> 13; + var b9 = b[9] | 0; + var bl9 = b9 & 0x1fff; + var bh9 = b9 >>> 13; + + out.negative = self.negative ^ num.negative; + out.length = 19; + /* k = 0 */ + lo = Math.imul(al0, bl0); + mid = Math.imul(al0, bh0); + mid = (mid + Math.imul(ah0, bl0)) | 0; + hi = Math.imul(ah0, bh0); + var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0; + w0 &= 0x3ffffff; + /* k = 1 */ + lo = Math.imul(al1, bl0); + mid = Math.imul(al1, bh0); + mid = (mid + Math.imul(ah1, bl0)) | 0; + hi = Math.imul(ah1, bh0); + lo = (lo + Math.imul(al0, bl1)) | 0; + mid = (mid + Math.imul(al0, bh1)) | 0; + mid = (mid + Math.imul(ah0, bl1)) | 0; + hi = (hi + Math.imul(ah0, bh1)) | 0; + var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0; + w1 &= 0x3ffffff; + /* k = 2 */ + lo = Math.imul(al2, bl0); + mid = Math.imul(al2, bh0); + mid = (mid + Math.imul(ah2, bl0)) | 0; + hi = Math.imul(ah2, bh0); + lo = (lo + Math.imul(al1, bl1)) | 0; + mid = (mid + Math.imul(al1, bh1)) | 0; + mid = (mid + Math.imul(ah1, bl1)) | 0; + hi = (hi + Math.imul(ah1, bh1)) | 0; + lo = (lo + Math.imul(al0, bl2)) | 0; + mid = (mid + Math.imul(al0, bh2)) | 0; + mid = (mid + Math.imul(ah0, bl2)) | 0; + hi = (hi + Math.imul(ah0, bh2)) | 0; + var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0; + w2 &= 0x3ffffff; + /* k = 3 */ + lo = Math.imul(al3, bl0); + mid = Math.imul(al3, bh0); + mid = (mid + Math.imul(ah3, bl0)) | 0; + hi = Math.imul(ah3, bh0); + lo = (lo + Math.imul(al2, bl1)) | 0; + mid = (mid + Math.imul(al2, bh1)) | 0; + mid = (mid + Math.imul(ah2, bl1)) | 0; + hi = (hi + Math.imul(ah2, bh1)) | 0; + lo = (lo + Math.imul(al1, bl2)) | 0; + mid = (mid + Math.imul(al1, bh2)) | 0; + mid = (mid + Math.imul(ah1, bl2)) | 0; + hi = (hi + Math.imul(ah1, bh2)) | 0; + lo = (lo + Math.imul(al0, bl3)) | 0; + mid = (mid + Math.imul(al0, bh3)) | 0; + mid = (mid + Math.imul(ah0, bl3)) | 0; + hi = (hi + Math.imul(ah0, bh3)) | 0; + var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0; + w3 &= 0x3ffffff; + /* k = 4 */ + lo = Math.imul(al4, bl0); + mid = Math.imul(al4, bh0); + mid = (mid + Math.imul(ah4, bl0)) | 0; + hi = Math.imul(ah4, bh0); + lo = (lo + Math.imul(al3, bl1)) | 0; + mid = (mid + Math.imul(al3, bh1)) | 0; + mid = (mid + Math.imul(ah3, bl1)) | 0; + hi = (hi + Math.imul(ah3, bh1)) | 0; + lo = (lo + Math.imul(al2, bl2)) | 0; + mid = (mid + Math.imul(al2, bh2)) | 0; + mid = (mid + Math.imul(ah2, bl2)) | 0; + hi = (hi + Math.imul(ah2, bh2)) | 0; + lo = (lo + Math.imul(al1, bl3)) | 0; + mid = (mid + Math.imul(al1, bh3)) | 0; + mid = (mid + Math.imul(ah1, bl3)) | 0; + hi = (hi + Math.imul(ah1, bh3)) | 0; + lo = (lo + Math.imul(al0, bl4)) | 0; + mid = (mid + Math.imul(al0, bh4)) | 0; + mid = (mid + Math.imul(ah0, bl4)) | 0; + hi = (hi + Math.imul(ah0, bh4)) | 0; + var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0; + w4 &= 0x3ffffff; + /* k = 5 */ + lo = Math.imul(al5, bl0); + mid = Math.imul(al5, bh0); + mid = (mid + Math.imul(ah5, bl0)) | 0; + hi = Math.imul(ah5, bh0); + lo = (lo + Math.imul(al4, bl1)) | 0; + mid = (mid + Math.imul(al4, bh1)) | 0; + mid = (mid + Math.imul(ah4, bl1)) | 0; + hi = (hi + Math.imul(ah4, bh1)) | 0; + lo = (lo + Math.imul(al3, bl2)) | 0; + mid = (mid + Math.imul(al3, bh2)) | 0; + mid = (mid + Math.imul(ah3, bl2)) | 0; + hi = (hi + Math.imul(ah3, bh2)) | 0; + lo = (lo + Math.imul(al2, bl3)) | 0; + mid = (mid + Math.imul(al2, bh3)) | 0; + mid = (mid + Math.imul(ah2, bl3)) | 0; + hi = (hi + Math.imul(ah2, bh3)) | 0; + lo = (lo + Math.imul(al1, bl4)) | 0; + mid = (mid + Math.imul(al1, bh4)) | 0; + mid = (mid + Math.imul(ah1, bl4)) | 0; + hi = (hi + Math.imul(ah1, bh4)) | 0; + lo = (lo + Math.imul(al0, bl5)) | 0; + mid = (mid + Math.imul(al0, bh5)) | 0; + mid = (mid + Math.imul(ah0, bl5)) | 0; + hi = (hi + Math.imul(ah0, bh5)) | 0; + var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0; + w5 &= 0x3ffffff; + /* k = 6 */ + lo = Math.imul(al6, bl0); + mid = Math.imul(al6, bh0); + mid = (mid + Math.imul(ah6, bl0)) | 0; + hi = Math.imul(ah6, bh0); + lo = (lo + Math.imul(al5, bl1)) | 0; + mid = (mid + Math.imul(al5, bh1)) | 0; + mid = (mid + Math.imul(ah5, bl1)) | 0; + hi = (hi + Math.imul(ah5, bh1)) | 0; + lo = (lo + Math.imul(al4, bl2)) | 0; + mid = (mid + Math.imul(al4, bh2)) | 0; + mid = (mid + Math.imul(ah4, bl2)) | 0; + hi = (hi + Math.imul(ah4, bh2)) | 0; + lo = (lo + Math.imul(al3, bl3)) | 0; + mid = (mid + Math.imul(al3, bh3)) | 0; + mid = (mid + Math.imul(ah3, bl3)) | 0; + hi = (hi + Math.imul(ah3, bh3)) | 0; + lo = (lo + Math.imul(al2, bl4)) | 0; + mid = (mid + Math.imul(al2, bh4)) | 0; + mid = (mid + Math.imul(ah2, bl4)) | 0; + hi = (hi + Math.imul(ah2, bh4)) | 0; + lo = (lo + Math.imul(al1, bl5)) | 0; + mid = (mid + Math.imul(al1, bh5)) | 0; + mid = (mid + Math.imul(ah1, bl5)) | 0; + hi = (hi + Math.imul(ah1, bh5)) | 0; + lo = (lo + Math.imul(al0, bl6)) | 0; + mid = (mid + Math.imul(al0, bh6)) | 0; + mid = (mid + Math.imul(ah0, bl6)) | 0; + hi = (hi + Math.imul(ah0, bh6)) | 0; + var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0; + w6 &= 0x3ffffff; + /* k = 7 */ + lo = Math.imul(al7, bl0); + mid = Math.imul(al7, bh0); + mid = (mid + Math.imul(ah7, bl0)) | 0; + hi = Math.imul(ah7, bh0); + lo = (lo + Math.imul(al6, bl1)) | 0; + mid = (mid + Math.imul(al6, bh1)) | 0; + mid = (mid + Math.imul(ah6, bl1)) | 0; + hi = (hi + Math.imul(ah6, bh1)) | 0; + lo = (lo + Math.imul(al5, bl2)) | 0; + mid = (mid + Math.imul(al5, bh2)) | 0; + mid = (mid + Math.imul(ah5, bl2)) | 0; + hi = (hi + Math.imul(ah5, bh2)) | 0; + lo = (lo + Math.imul(al4, bl3)) | 0; + mid = (mid + Math.imul(al4, bh3)) | 0; + mid = (mid + Math.imul(ah4, bl3)) | 0; + hi = (hi + Math.imul(ah4, bh3)) | 0; + lo = (lo + Math.imul(al3, bl4)) | 0; + mid = (mid + Math.imul(al3, bh4)) | 0; + mid = (mid + Math.imul(ah3, bl4)) | 0; + hi = (hi + Math.imul(ah3, bh4)) | 0; + lo = (lo + Math.imul(al2, bl5)) | 0; + mid = (mid + Math.imul(al2, bh5)) | 0; + mid = (mid + Math.imul(ah2, bl5)) | 0; + hi = (hi + Math.imul(ah2, bh5)) | 0; + lo = (lo + Math.imul(al1, bl6)) | 0; + mid = (mid + Math.imul(al1, bh6)) | 0; + mid = (mid + Math.imul(ah1, bl6)) | 0; + hi = (hi + Math.imul(ah1, bh6)) | 0; + lo = (lo + Math.imul(al0, bl7)) | 0; + mid = (mid + Math.imul(al0, bh7)) | 0; + mid = (mid + Math.imul(ah0, bl7)) | 0; + hi = (hi + Math.imul(ah0, bh7)) | 0; + var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0; + w7 &= 0x3ffffff; + /* k = 8 */ + lo = Math.imul(al8, bl0); + mid = Math.imul(al8, bh0); + mid = (mid + Math.imul(ah8, bl0)) | 0; + hi = Math.imul(ah8, bh0); + lo = (lo + Math.imul(al7, bl1)) | 0; + mid = (mid + Math.imul(al7, bh1)) | 0; + mid = (mid + Math.imul(ah7, bl1)) | 0; + hi = (hi + Math.imul(ah7, bh1)) | 0; + lo = (lo + Math.imul(al6, bl2)) | 0; + mid = (mid + Math.imul(al6, bh2)) | 0; + mid = (mid + Math.imul(ah6, bl2)) | 0; + hi = (hi + Math.imul(ah6, bh2)) | 0; + lo = (lo + Math.imul(al5, bl3)) | 0; + mid = (mid + Math.imul(al5, bh3)) | 0; + mid = (mid + Math.imul(ah5, bl3)) | 0; + hi = (hi + Math.imul(ah5, bh3)) | 0; + lo = (lo + Math.imul(al4, bl4)) | 0; + mid = (mid + Math.imul(al4, bh4)) | 0; + mid = (mid + Math.imul(ah4, bl4)) | 0; + hi = (hi + Math.imul(ah4, bh4)) | 0; + lo = (lo + Math.imul(al3, bl5)) | 0; + mid = (mid + Math.imul(al3, bh5)) | 0; + mid = (mid + Math.imul(ah3, bl5)) | 0; + hi = (hi + Math.imul(ah3, bh5)) | 0; + lo = (lo + Math.imul(al2, bl6)) | 0; + mid = (mid + Math.imul(al2, bh6)) | 0; + mid = (mid + Math.imul(ah2, bl6)) | 0; + hi = (hi + Math.imul(ah2, bh6)) | 0; + lo = (lo + Math.imul(al1, bl7)) | 0; + mid = (mid + Math.imul(al1, bh7)) | 0; + mid = (mid + Math.imul(ah1, bl7)) | 0; + hi = (hi + Math.imul(ah1, bh7)) | 0; + lo = (lo + Math.imul(al0, bl8)) | 0; + mid = (mid + Math.imul(al0, bh8)) | 0; + mid = (mid + Math.imul(ah0, bl8)) | 0; + hi = (hi + Math.imul(ah0, bh8)) | 0; + var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0; + w8 &= 0x3ffffff; + /* k = 9 */ + lo = Math.imul(al9, bl0); + mid = Math.imul(al9, bh0); + mid = (mid + Math.imul(ah9, bl0)) | 0; + hi = Math.imul(ah9, bh0); + lo = (lo + Math.imul(al8, bl1)) | 0; + mid = (mid + Math.imul(al8, bh1)) | 0; + mid = (mid + Math.imul(ah8, bl1)) | 0; + hi = (hi + Math.imul(ah8, bh1)) | 0; + lo = (lo + Math.imul(al7, bl2)) | 0; + mid = (mid + Math.imul(al7, bh2)) | 0; + mid = (mid + Math.imul(ah7, bl2)) | 0; + hi = (hi + Math.imul(ah7, bh2)) | 0; + lo = (lo + Math.imul(al6, bl3)) | 0; + mid = (mid + Math.imul(al6, bh3)) | 0; + mid = (mid + Math.imul(ah6, bl3)) | 0; + hi = (hi + Math.imul(ah6, bh3)) | 0; + lo = (lo + Math.imul(al5, bl4)) | 0; + mid = (mid + Math.imul(al5, bh4)) | 0; + mid = (mid + Math.imul(ah5, bl4)) | 0; + hi = (hi + Math.imul(ah5, bh4)) | 0; + lo = (lo + Math.imul(al4, bl5)) | 0; + mid = (mid + Math.imul(al4, bh5)) | 0; + mid = (mid + Math.imul(ah4, bl5)) | 0; + hi = (hi + Math.imul(ah4, bh5)) | 0; + lo = (lo + Math.imul(al3, bl6)) | 0; + mid = (mid + Math.imul(al3, bh6)) | 0; + mid = (mid + Math.imul(ah3, bl6)) | 0; + hi = (hi + Math.imul(ah3, bh6)) | 0; + lo = (lo + Math.imul(al2, bl7)) | 0; + mid = (mid + Math.imul(al2, bh7)) | 0; + mid = (mid + Math.imul(ah2, bl7)) | 0; + hi = (hi + Math.imul(ah2, bh7)) | 0; + lo = (lo + Math.imul(al1, bl8)) | 0; + mid = (mid + Math.imul(al1, bh8)) | 0; + mid = (mid + Math.imul(ah1, bl8)) | 0; + hi = (hi + Math.imul(ah1, bh8)) | 0; + lo = (lo + Math.imul(al0, bl9)) | 0; + mid = (mid + Math.imul(al0, bh9)) | 0; + mid = (mid + Math.imul(ah0, bl9)) | 0; + hi = (hi + Math.imul(ah0, bh9)) | 0; + var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0; + w9 &= 0x3ffffff; + /* k = 10 */ + lo = Math.imul(al9, bl1); + mid = Math.imul(al9, bh1); + mid = (mid + Math.imul(ah9, bl1)) | 0; + hi = Math.imul(ah9, bh1); + lo = (lo + Math.imul(al8, bl2)) | 0; + mid = (mid + Math.imul(al8, bh2)) | 0; + mid = (mid + Math.imul(ah8, bl2)) | 0; + hi = (hi + Math.imul(ah8, bh2)) | 0; + lo = (lo + Math.imul(al7, bl3)) | 0; + mid = (mid + Math.imul(al7, bh3)) | 0; + mid = (mid + Math.imul(ah7, bl3)) | 0; + hi = (hi + Math.imul(ah7, bh3)) | 0; + lo = (lo + Math.imul(al6, bl4)) | 0; + mid = (mid + Math.imul(al6, bh4)) | 0; + mid = (mid + Math.imul(ah6, bl4)) | 0; + hi = (hi + Math.imul(ah6, bh4)) | 0; + lo = (lo + Math.imul(al5, bl5)) | 0; + mid = (mid + Math.imul(al5, bh5)) | 0; + mid = (mid + Math.imul(ah5, bl5)) | 0; + hi = (hi + Math.imul(ah5, bh5)) | 0; + lo = (lo + Math.imul(al4, bl6)) | 0; + mid = (mid + Math.imul(al4, bh6)) | 0; + mid = (mid + Math.imul(ah4, bl6)) | 0; + hi = (hi + Math.imul(ah4, bh6)) | 0; + lo = (lo + Math.imul(al3, bl7)) | 0; + mid = (mid + Math.imul(al3, bh7)) | 0; + mid = (mid + Math.imul(ah3, bl7)) | 0; + hi = (hi + Math.imul(ah3, bh7)) | 0; + lo = (lo + Math.imul(al2, bl8)) | 0; + mid = (mid + Math.imul(al2, bh8)) | 0; + mid = (mid + Math.imul(ah2, bl8)) | 0; + hi = (hi + Math.imul(ah2, bh8)) | 0; + lo = (lo + Math.imul(al1, bl9)) | 0; + mid = (mid + Math.imul(al1, bh9)) | 0; + mid = (mid + Math.imul(ah1, bl9)) | 0; + hi = (hi + Math.imul(ah1, bh9)) | 0; + var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0; + w10 &= 0x3ffffff; + /* k = 11 */ + lo = Math.imul(al9, bl2); + mid = Math.imul(al9, bh2); + mid = (mid + Math.imul(ah9, bl2)) | 0; + hi = Math.imul(ah9, bh2); + lo = (lo + Math.imul(al8, bl3)) | 0; + mid = (mid + Math.imul(al8, bh3)) | 0; + mid = (mid + Math.imul(ah8, bl3)) | 0; + hi = (hi + Math.imul(ah8, bh3)) | 0; + lo = (lo + Math.imul(al7, bl4)) | 0; + mid = (mid + Math.imul(al7, bh4)) | 0; + mid = (mid + Math.imul(ah7, bl4)) | 0; + hi = (hi + Math.imul(ah7, bh4)) | 0; + lo = (lo + Math.imul(al6, bl5)) | 0; + mid = (mid + Math.imul(al6, bh5)) | 0; + mid = (mid + Math.imul(ah6, bl5)) | 0; + hi = (hi + Math.imul(ah6, bh5)) | 0; + lo = (lo + Math.imul(al5, bl6)) | 0; + mid = (mid + Math.imul(al5, bh6)) | 0; + mid = (mid + Math.imul(ah5, bl6)) | 0; + hi = (hi + Math.imul(ah5, bh6)) | 0; + lo = (lo + Math.imul(al4, bl7)) | 0; + mid = (mid + Math.imul(al4, bh7)) | 0; + mid = (mid + Math.imul(ah4, bl7)) | 0; + hi = (hi + Math.imul(ah4, bh7)) | 0; + lo = (lo + Math.imul(al3, bl8)) | 0; + mid = (mid + Math.imul(al3, bh8)) | 0; + mid = (mid + Math.imul(ah3, bl8)) | 0; + hi = (hi + Math.imul(ah3, bh8)) | 0; + lo = (lo + Math.imul(al2, bl9)) | 0; + mid = (mid + Math.imul(al2, bh9)) | 0; + mid = (mid + Math.imul(ah2, bl9)) | 0; + hi = (hi + Math.imul(ah2, bh9)) | 0; + var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0; + w11 &= 0x3ffffff; + /* k = 12 */ + lo = Math.imul(al9, bl3); + mid = Math.imul(al9, bh3); + mid = (mid + Math.imul(ah9, bl3)) | 0; + hi = Math.imul(ah9, bh3); + lo = (lo + Math.imul(al8, bl4)) | 0; + mid = (mid + Math.imul(al8, bh4)) | 0; + mid = (mid + Math.imul(ah8, bl4)) | 0; + hi = (hi + Math.imul(ah8, bh4)) | 0; + lo = (lo + Math.imul(al7, bl5)) | 0; + mid = (mid + Math.imul(al7, bh5)) | 0; + mid = (mid + Math.imul(ah7, bl5)) | 0; + hi = (hi + Math.imul(ah7, bh5)) | 0; + lo = (lo + Math.imul(al6, bl6)) | 0; + mid = (mid + Math.imul(al6, bh6)) | 0; + mid = (mid + Math.imul(ah6, bl6)) | 0; + hi = (hi + Math.imul(ah6, bh6)) | 0; + lo = (lo + Math.imul(al5, bl7)) | 0; + mid = (mid + Math.imul(al5, bh7)) | 0; + mid = (mid + Math.imul(ah5, bl7)) | 0; + hi = (hi + Math.imul(ah5, bh7)) | 0; + lo = (lo + Math.imul(al4, bl8)) | 0; + mid = (mid + Math.imul(al4, bh8)) | 0; + mid = (mid + Math.imul(ah4, bl8)) | 0; + hi = (hi + Math.imul(ah4, bh8)) | 0; + lo = (lo + Math.imul(al3, bl9)) | 0; + mid = (mid + Math.imul(al3, bh9)) | 0; + mid = (mid + Math.imul(ah3, bl9)) | 0; + hi = (hi + Math.imul(ah3, bh9)) | 0; + var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0; + w12 &= 0x3ffffff; + /* k = 13 */ + lo = Math.imul(al9, bl4); + mid = Math.imul(al9, bh4); + mid = (mid + Math.imul(ah9, bl4)) | 0; + hi = Math.imul(ah9, bh4); + lo = (lo + Math.imul(al8, bl5)) | 0; + mid = (mid + Math.imul(al8, bh5)) | 0; + mid = (mid + Math.imul(ah8, bl5)) | 0; + hi = (hi + Math.imul(ah8, bh5)) | 0; + lo = (lo + Math.imul(al7, bl6)) | 0; + mid = (mid + Math.imul(al7, bh6)) | 0; + mid = (mid + Math.imul(ah7, bl6)) | 0; + hi = (hi + Math.imul(ah7, bh6)) | 0; + lo = (lo + Math.imul(al6, bl7)) | 0; + mid = (mid + Math.imul(al6, bh7)) | 0; + mid = (mid + Math.imul(ah6, bl7)) | 0; + hi = (hi + Math.imul(ah6, bh7)) | 0; + lo = (lo + Math.imul(al5, bl8)) | 0; + mid = (mid + Math.imul(al5, bh8)) | 0; + mid = (mid + Math.imul(ah5, bl8)) | 0; + hi = (hi + Math.imul(ah5, bh8)) | 0; + lo = (lo + Math.imul(al4, bl9)) | 0; + mid = (mid + Math.imul(al4, bh9)) | 0; + mid = (mid + Math.imul(ah4, bl9)) | 0; + hi = (hi + Math.imul(ah4, bh9)) | 0; + var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0; + w13 &= 0x3ffffff; + /* k = 14 */ + lo = Math.imul(al9, bl5); + mid = Math.imul(al9, bh5); + mid = (mid + Math.imul(ah9, bl5)) | 0; + hi = Math.imul(ah9, bh5); + lo = (lo + Math.imul(al8, bl6)) | 0; + mid = (mid + Math.imul(al8, bh6)) | 0; + mid = (mid + Math.imul(ah8, bl6)) | 0; + hi = (hi + Math.imul(ah8, bh6)) | 0; + lo = (lo + Math.imul(al7, bl7)) | 0; + mid = (mid + Math.imul(al7, bh7)) | 0; + mid = (mid + Math.imul(ah7, bl7)) | 0; + hi = (hi + Math.imul(ah7, bh7)) | 0; + lo = (lo + Math.imul(al6, bl8)) | 0; + mid = (mid + Math.imul(al6, bh8)) | 0; + mid = (mid + Math.imul(ah6, bl8)) | 0; + hi = (hi + Math.imul(ah6, bh8)) | 0; + lo = (lo + Math.imul(al5, bl9)) | 0; + mid = (mid + Math.imul(al5, bh9)) | 0; + mid = (mid + Math.imul(ah5, bl9)) | 0; + hi = (hi + Math.imul(ah5, bh9)) | 0; + var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0; + w14 &= 0x3ffffff; + /* k = 15 */ + lo = Math.imul(al9, bl6); + mid = Math.imul(al9, bh6); + mid = (mid + Math.imul(ah9, bl6)) | 0; + hi = Math.imul(ah9, bh6); + lo = (lo + Math.imul(al8, bl7)) | 0; + mid = (mid + Math.imul(al8, bh7)) | 0; + mid = (mid + Math.imul(ah8, bl7)) | 0; + hi = (hi + Math.imul(ah8, bh7)) | 0; + lo = (lo + Math.imul(al7, bl8)) | 0; + mid = (mid + Math.imul(al7, bh8)) | 0; + mid = (mid + Math.imul(ah7, bl8)) | 0; + hi = (hi + Math.imul(ah7, bh8)) | 0; + lo = (lo + Math.imul(al6, bl9)) | 0; + mid = (mid + Math.imul(al6, bh9)) | 0; + mid = (mid + Math.imul(ah6, bl9)) | 0; + hi = (hi + Math.imul(ah6, bh9)) | 0; + var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0; + w15 &= 0x3ffffff; + /* k = 16 */ + lo = Math.imul(al9, bl7); + mid = Math.imul(al9, bh7); + mid = (mid + Math.imul(ah9, bl7)) | 0; + hi = Math.imul(ah9, bh7); + lo = (lo + Math.imul(al8, bl8)) | 0; + mid = (mid + Math.imul(al8, bh8)) | 0; + mid = (mid + Math.imul(ah8, bl8)) | 0; + hi = (hi + Math.imul(ah8, bh8)) | 0; + lo = (lo + Math.imul(al7, bl9)) | 0; + mid = (mid + Math.imul(al7, bh9)) | 0; + mid = (mid + Math.imul(ah7, bl9)) | 0; + hi = (hi + Math.imul(ah7, bh9)) | 0; + var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0; + w16 &= 0x3ffffff; + /* k = 17 */ + lo = Math.imul(al9, bl8); + mid = Math.imul(al9, bh8); + mid = (mid + Math.imul(ah9, bl8)) | 0; + hi = Math.imul(ah9, bh8); + lo = (lo + Math.imul(al8, bl9)) | 0; + mid = (mid + Math.imul(al8, bh9)) | 0; + mid = (mid + Math.imul(ah8, bl9)) | 0; + hi = (hi + Math.imul(ah8, bh9)) | 0; + var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0; + w17 &= 0x3ffffff; + /* k = 18 */ + lo = Math.imul(al9, bl9); + mid = Math.imul(al9, bh9); + mid = (mid + Math.imul(ah9, bl9)) | 0; + hi = Math.imul(ah9, bh9); + var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0; + w18 &= 0x3ffffff; + o[0] = w0; + o[1] = w1; + o[2] = w2; + o[3] = w3; + o[4] = w4; + o[5] = w5; + o[6] = w6; + o[7] = w7; + o[8] = w8; + o[9] = w9; + o[10] = w10; + o[11] = w11; + o[12] = w12; + o[13] = w13; + o[14] = w14; + o[15] = w15; + o[16] = w16; + o[17] = w17; + o[18] = w18; + if (c !== 0) { + o[19] = c; + out.length++; + } + return out; + }; + + // Polyfill comb + if (!Math.imul) { + comb10MulTo = smallMulTo; + } + + function bigMulTo (self, num, out) { + out.negative = num.negative ^ self.negative; + out.length = self.length + num.length; + + var carry = 0; + var hncarry = 0; + for (var k = 0; k < out.length - 1; k++) { + // Sum all words with the same `i + j = k` and accumulate `ncarry`, + // note that ncarry could be >= 0x3ffffff + var ncarry = hncarry; + hncarry = 0; + var rword = carry & 0x3ffffff; + var maxJ = Math.min(k, num.length - 1); + for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) { + var i = k - j; + var a = self.words[i] | 0; + var b = num.words[j] | 0; + var r = a * b; + + var lo = r & 0x3ffffff; + ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0; + lo = (lo + rword) | 0; + rword = lo & 0x3ffffff; + ncarry = (ncarry + (lo >>> 26)) | 0; + + hncarry += ncarry >>> 26; + ncarry &= 0x3ffffff; + } + out.words[k] = rword; + carry = ncarry; + ncarry = hncarry; + } + if (carry !== 0) { + out.words[k] = carry; + } else { + out.length--; + } + + return out.strip(); + } + + function jumboMulTo (self, num, out) { + var fftm = new FFTM(); + return fftm.mulp(self, num, out); + } + + BN.prototype.mulTo = function mulTo (num, out) { + var res; + var len = this.length + num.length; + if (this.length === 10 && num.length === 10) { + res = comb10MulTo(this, num, out); + } else if (len < 63) { + res = smallMulTo(this, num, out); + } else if (len < 1024) { + res = bigMulTo(this, num, out); + } else { + res = jumboMulTo(this, num, out); + } + + return res; + }; + + // Cooley-Tukey algorithm for FFT + // slightly revisited to rely on looping instead of recursion + + function FFTM (x, y) { + this.x = x; + this.y = y; + } + + FFTM.prototype.makeRBT = function makeRBT (N) { + var t = new Array(N); + var l = BN.prototype._countBits(N) - 1; + for (var i = 0; i < N; i++) { + t[i] = this.revBin(i, l, N); + } + + return t; + }; + + // Returns binary-reversed representation of `x` + FFTM.prototype.revBin = function revBin (x, l, N) { + if (x === 0 || x === N - 1) return x; + + var rb = 0; + for (var i = 0; i < l; i++) { + rb |= (x & 1) << (l - i - 1); + x >>= 1; + } + + return rb; + }; + + // Performs "tweedling" phase, therefore 'emulating' + // behaviour of the recursive algorithm + FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) { + for (var i = 0; i < N; i++) { + rtws[i] = rws[rbt[i]]; + itws[i] = iws[rbt[i]]; + } + }; + + FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) { + this.permute(rbt, rws, iws, rtws, itws, N); + + for (var s = 1; s < N; s <<= 1) { + var l = s << 1; + + var rtwdf = Math.cos(2 * Math.PI / l); + var itwdf = Math.sin(2 * Math.PI / l); + + for (var p = 0; p < N; p += l) { + var rtwdf_ = rtwdf; + var itwdf_ = itwdf; + + for (var j = 0; j < s; j++) { + var re = rtws[p + j]; + var ie = itws[p + j]; + + var ro = rtws[p + j + s]; + var io = itws[p + j + s]; + + var rx = rtwdf_ * ro - itwdf_ * io; + + io = rtwdf_ * io + itwdf_ * ro; + ro = rx; + + rtws[p + j] = re + ro; + itws[p + j] = ie + io; + + rtws[p + j + s] = re - ro; + itws[p + j + s] = ie - io; + + /* jshint maxdepth : false */ + if (j !== l) { + rx = rtwdf * rtwdf_ - itwdf * itwdf_; + + itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_; + rtwdf_ = rx; + } + } + } + } + }; + + FFTM.prototype.guessLen13b = function guessLen13b (n, m) { + var N = Math.max(m, n) | 1; + var odd = N & 1; + var i = 0; + for (N = N / 2 | 0; N; N = N >>> 1) { + i++; + } + + return 1 << i + 1 + odd; + }; + + FFTM.prototype.conjugate = function conjugate (rws, iws, N) { + if (N <= 1) return; + + for (var i = 0; i < N / 2; i++) { + var t = rws[i]; + + rws[i] = rws[N - i - 1]; + rws[N - i - 1] = t; + + t = iws[i]; + + iws[i] = -iws[N - i - 1]; + iws[N - i - 1] = -t; + } + }; + + FFTM.prototype.normalize13b = function normalize13b (ws, N) { + var carry = 0; + for (var i = 0; i < N / 2; i++) { + var w = Math.round(ws[2 * i + 1] / N) * 0x2000 + + Math.round(ws[2 * i] / N) + + carry; + + ws[i] = w & 0x3ffffff; + + if (w < 0x4000000) { + carry = 0; + } else { + carry = w / 0x4000000 | 0; + } + } + + return ws; + }; + + FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) { + var carry = 0; + for (var i = 0; i < len; i++) { + carry = carry + (ws[i] | 0); + + rws[2 * i] = carry & 0x1fff; carry = carry >>> 13; + rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13; + } + + // Pad with zeroes + for (i = 2 * len; i < N; ++i) { + rws[i] = 0; + } + + assert(carry === 0); + assert((carry & ~0x1fff) === 0); + }; + + FFTM.prototype.stub = function stub (N) { + var ph = new Array(N); + for (var i = 0; i < N; i++) { + ph[i] = 0; + } + + return ph; + }; + + FFTM.prototype.mulp = function mulp (x, y, out) { + var N = 2 * this.guessLen13b(x.length, y.length); + + var rbt = this.makeRBT(N); + + var _ = this.stub(N); + + var rws = new Array(N); + var rwst = new Array(N); + var iwst = new Array(N); + + var nrws = new Array(N); + var nrwst = new Array(N); + var niwst = new Array(N); + + var rmws = out.words; + rmws.length = N; + + this.convert13b(x.words, x.length, rws, N); + this.convert13b(y.words, y.length, nrws, N); + + this.transform(rws, _, rwst, iwst, N, rbt); + this.transform(nrws, _, nrwst, niwst, N, rbt); + + for (var i = 0; i < N; i++) { + var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i]; + iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i]; + rwst[i] = rx; + } + + this.conjugate(rwst, iwst, N); + this.transform(rwst, iwst, rmws, _, N, rbt); + this.conjugate(rmws, _, N); + this.normalize13b(rmws, N); + + out.negative = x.negative ^ y.negative; + out.length = x.length + y.length; + return out.strip(); + }; + + // Multiply `this` by `num` + BN.prototype.mul = function mul (num) { + var out = new BN(null); + out.words = new Array(this.length + num.length); + return this.mulTo(num, out); + }; + + // Multiply employing FFT + BN.prototype.mulf = function mulf (num) { + var out = new BN(null); + out.words = new Array(this.length + num.length); + return jumboMulTo(this, num, out); + }; + + // In-place Multiplication + BN.prototype.imul = function imul (num) { + return this.clone().mulTo(num, this); + }; + + BN.prototype.imuln = function imuln (num) { + assert(typeof num === 'number'); + assert(num < 0x4000000); + + // Carry + var carry = 0; + for (var i = 0; i < this.length; i++) { + var w = (this.words[i] | 0) * num; + var lo = (w & 0x3ffffff) + (carry & 0x3ffffff); + carry >>= 26; + carry += (w / 0x4000000) | 0; + // NOTE: lo is 27bit maximum + carry += lo >>> 26; + this.words[i] = lo & 0x3ffffff; + } + + if (carry !== 0) { + this.words[i] = carry; + this.length++; + } + + return this; + }; + + BN.prototype.muln = function muln (num) { + return this.clone().imuln(num); + }; + + // `this` * `this` + BN.prototype.sqr = function sqr () { + return this.mul(this); + }; + + // `this` * `this` in-place + BN.prototype.isqr = function isqr () { + return this.imul(this.clone()); + }; + + // Math.pow(`this`, `num`) + BN.prototype.pow = function pow (num) { + var w = toBitArray(num); + if (w.length === 0) return new BN(1); + + // Skip leading zeroes + var res = this; + for (var i = 0; i < w.length; i++, res = res.sqr()) { + if (w[i] !== 0) break; + } + + if (++i < w.length) { + for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) { + if (w[i] === 0) continue; + + res = res.mul(q); + } + } + + return res; + }; + + // Shift-left in-place + BN.prototype.iushln = function iushln (bits) { + assert(typeof bits === 'number' && bits >= 0); + var r = bits % 26; + var s = (bits - r) / 26; + var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r); + var i; + + if (r !== 0) { + var carry = 0; + + for (i = 0; i < this.length; i++) { + var newCarry = this.words[i] & carryMask; + var c = ((this.words[i] | 0) - newCarry) << r; + this.words[i] = c | carry; + carry = newCarry >>> (26 - r); + } + + if (carry) { + this.words[i] = carry; + this.length++; + } + } + + if (s !== 0) { + for (i = this.length - 1; i >= 0; i--) { + this.words[i + s] = this.words[i]; + } + + for (i = 0; i < s; i++) { + this.words[i] = 0; + } + + this.length += s; + } + + return this.strip(); + }; + + BN.prototype.ishln = function ishln (bits) { + // TODO(indutny): implement me + assert(this.negative === 0); + return this.iushln(bits); + }; + + // Shift-right in-place + // NOTE: `hint` is a lowest bit before trailing zeroes + // NOTE: if `extended` is present - it will be filled with destroyed bits + BN.prototype.iushrn = function iushrn (bits, hint, extended) { + assert(typeof bits === 'number' && bits >= 0); + var h; + if (hint) { + h = (hint - (hint % 26)) / 26; + } else { + h = 0; + } + + var r = bits % 26; + var s = Math.min((bits - r) / 26, this.length); + var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); + var maskedWords = extended; + + h -= s; + h = Math.max(0, h); + + // Extended mode, copy masked part + if (maskedWords) { + for (var i = 0; i < s; i++) { + maskedWords.words[i] = this.words[i]; + } + maskedWords.length = s; + } + + if (s === 0) { + // No-op, we should not move anything at all + } else if (this.length > s) { + this.length -= s; + for (i = 0; i < this.length; i++) { + this.words[i] = this.words[i + s]; + } + } else { + this.words[0] = 0; + this.length = 1; + } + + var carry = 0; + for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) { + var word = this.words[i] | 0; + this.words[i] = (carry << (26 - r)) | (word >>> r); + carry = word & mask; + } + + // Push carried bits as a mask + if (maskedWords && carry !== 0) { + maskedWords.words[maskedWords.length++] = carry; + } + + if (this.length === 0) { + this.words[0] = 0; + this.length = 1; + } + + return this.strip(); + }; + + BN.prototype.ishrn = function ishrn (bits, hint, extended) { + // TODO(indutny): implement me + assert(this.negative === 0); + return this.iushrn(bits, hint, extended); + }; + + // Shift-left + BN.prototype.shln = function shln (bits) { + return this.clone().ishln(bits); + }; + + BN.prototype.ushln = function ushln (bits) { + return this.clone().iushln(bits); + }; + + // Shift-right + BN.prototype.shrn = function shrn (bits) { + return this.clone().ishrn(bits); + }; + + BN.prototype.ushrn = function ushrn (bits) { + return this.clone().iushrn(bits); + }; + + // Test if n bit is set + BN.prototype.testn = function testn (bit) { + assert(typeof bit === 'number' && bit >= 0); + var r = bit % 26; + var s = (bit - r) / 26; + var q = 1 << r; + + // Fast case: bit is much higher than all existing words + if (this.length <= s) return false; + + // Check bit and return + var w = this.words[s]; + + return !!(w & q); + }; + + // Return only lowers bits of number (in-place) + BN.prototype.imaskn = function imaskn (bits) { + assert(typeof bits === 'number' && bits >= 0); + var r = bits % 26; + var s = (bits - r) / 26; + + assert(this.negative === 0, 'imaskn works only with positive numbers'); + + if (this.length <= s) { + return this; + } + + if (r !== 0) { + s++; + } + this.length = Math.min(s, this.length); + + if (r !== 0) { + var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); + this.words[this.length - 1] &= mask; + } + + return this.strip(); + }; + + // Return only lowers bits of number + BN.prototype.maskn = function maskn (bits) { + return this.clone().imaskn(bits); + }; + + // Add plain number `num` to `this` + BN.prototype.iaddn = function iaddn (num) { + assert(typeof num === 'number'); + assert(num < 0x4000000); + if (num < 0) return this.isubn(-num); + + // Possible sign change + if (this.negative !== 0) { + if (this.length === 1 && (this.words[0] | 0) < num) { + this.words[0] = num - (this.words[0] | 0); + this.negative = 0; + return this; + } + + this.negative = 0; + this.isubn(num); + this.negative = 1; + return this; + } + + // Add without checks + return this._iaddn(num); + }; + + BN.prototype._iaddn = function _iaddn (num) { + this.words[0] += num; + + // Carry + for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) { + this.words[i] -= 0x4000000; + if (i === this.length - 1) { + this.words[i + 1] = 1; + } else { + this.words[i + 1]++; + } + } + this.length = Math.max(this.length, i + 1); + + return this; + }; + + // Subtract plain number `num` from `this` + BN.prototype.isubn = function isubn (num) { + assert(typeof num === 'number'); + assert(num < 0x4000000); + if (num < 0) return this.iaddn(-num); + + if (this.negative !== 0) { + this.negative = 0; + this.iaddn(num); + this.negative = 1; + return this; + } + + this.words[0] -= num; + + if (this.length === 1 && this.words[0] < 0) { + this.words[0] = -this.words[0]; + this.negative = 1; + } else { + // Carry + for (var i = 0; i < this.length && this.words[i] < 0; i++) { + this.words[i] += 0x4000000; + this.words[i + 1] -= 1; + } + } + + return this.strip(); + }; + + BN.prototype.addn = function addn (num) { + return this.clone().iaddn(num); + }; + + BN.prototype.subn = function subn (num) { + return this.clone().isubn(num); + }; + + BN.prototype.iabs = function iabs () { + this.negative = 0; + + return this; + }; + + BN.prototype.abs = function abs () { + return this.clone().iabs(); + }; + + BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) { + var len = num.length + shift; + var i; + + this._expand(len); + + var w; + var carry = 0; + for (i = 0; i < num.length; i++) { + w = (this.words[i + shift] | 0) + carry; + var right = (num.words[i] | 0) * mul; + w -= right & 0x3ffffff; + carry = (w >> 26) - ((right / 0x4000000) | 0); + this.words[i + shift] = w & 0x3ffffff; + } + for (; i < this.length - shift; i++) { + w = (this.words[i + shift] | 0) + carry; + carry = w >> 26; + this.words[i + shift] = w & 0x3ffffff; + } + + if (carry === 0) return this.strip(); + + // Subtraction overflow + assert(carry === -1); + carry = 0; + for (i = 0; i < this.length; i++) { + w = -(this.words[i] | 0) + carry; + carry = w >> 26; + this.words[i] = w & 0x3ffffff; + } + this.negative = 1; + + return this.strip(); + }; + + BN.prototype._wordDiv = function _wordDiv (num, mode) { + var shift = this.length - num.length; + + var a = this.clone(); + var b = num; + + // Normalize + var bhi = b.words[b.length - 1] | 0; + var bhiBits = this._countBits(bhi); + shift = 26 - bhiBits; + if (shift !== 0) { + b = b.ushln(shift); + a.iushln(shift); + bhi = b.words[b.length - 1] | 0; + } + + // Initialize quotient + var m = a.length - b.length; + var q; + + if (mode !== 'mod') { + q = new BN(null); + q.length = m + 1; + q.words = new Array(q.length); + for (var i = 0; i < q.length; i++) { + q.words[i] = 0; + } + } + + var diff = a.clone()._ishlnsubmul(b, 1, m); + if (diff.negative === 0) { + a = diff; + if (q) { + q.words[m] = 1; + } + } + + for (var j = m - 1; j >= 0; j--) { + var qj = (a.words[b.length + j] | 0) * 0x4000000 + + (a.words[b.length + j - 1] | 0); + + // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max + // (0x7ffffff) + qj = Math.min((qj / bhi) | 0, 0x3ffffff); + + a._ishlnsubmul(b, qj, j); + while (a.negative !== 0) { + qj--; + a.negative = 0; + a._ishlnsubmul(b, 1, j); + if (!a.isZero()) { + a.negative ^= 1; + } + } + if (q) { + q.words[j] = qj; + } + } + if (q) { + q.strip(); + } + a.strip(); + + // Denormalize + if (mode !== 'div' && shift !== 0) { + a.iushrn(shift); + } + + return { + div: q || null, + mod: a + }; + }; + + // NOTE: 1) `mode` can be set to `mod` to request mod only, + // to `div` to request div only, or be absent to + // request both div & mod + // 2) `positive` is true if unsigned mod is requested + BN.prototype.divmod = function divmod (num, mode, positive) { + assert(!num.isZero()); + + if (this.isZero()) { + return { + div: new BN(0), + mod: new BN(0) + }; + } + + var div, mod, res; + if (this.negative !== 0 && num.negative === 0) { + res = this.neg().divmod(num, mode); + + if (mode !== 'mod') { + div = res.div.neg(); + } + + if (mode !== 'div') { + mod = res.mod.neg(); + if (positive && mod.negative !== 0) { + mod.iadd(num); + } + } + + return { + div: div, + mod: mod + }; + } + + if (this.negative === 0 && num.negative !== 0) { + res = this.divmod(num.neg(), mode); + + if (mode !== 'mod') { + div = res.div.neg(); + } + + return { + div: div, + mod: res.mod + }; + } + + if ((this.negative & num.negative) !== 0) { + res = this.neg().divmod(num.neg(), mode); + + if (mode !== 'div') { + mod = res.mod.neg(); + if (positive && mod.negative !== 0) { + mod.isub(num); + } + } + + return { + div: res.div, + mod: mod + }; + } + + // Both numbers are positive at this point + + // Strip both numbers to approximate shift value + if (num.length > this.length || this.cmp(num) < 0) { + return { + div: new BN(0), + mod: this + }; + } + + // Very short reduction + if (num.length === 1) { + if (mode === 'div') { + return { + div: this.divn(num.words[0]), + mod: null + }; + } + + if (mode === 'mod') { + return { + div: null, + mod: new BN(this.modn(num.words[0])) + }; + } + + return { + div: this.divn(num.words[0]), + mod: new BN(this.modn(num.words[0])) + }; + } + + return this._wordDiv(num, mode); + }; + + // Find `this` / `num` + BN.prototype.div = function div (num) { + return this.divmod(num, 'div', false).div; + }; + + // Find `this` % `num` + BN.prototype.mod = function mod (num) { + return this.divmod(num, 'mod', false).mod; + }; + + BN.prototype.umod = function umod (num) { + return this.divmod(num, 'mod', true).mod; + }; + + // Find Round(`this` / `num`) + BN.prototype.divRound = function divRound (num) { + var dm = this.divmod(num); + + // Fast case - exact division + if (dm.mod.isZero()) return dm.div; + + var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod; + + var half = num.ushrn(1); + var r2 = num.andln(1); + var cmp = mod.cmp(half); + + // Round down + if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div; + + // Round up + return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1); + }; + + BN.prototype.modn = function modn (num) { + assert(num <= 0x3ffffff); + var p = (1 << 26) % num; + + var acc = 0; + for (var i = this.length - 1; i >= 0; i--) { + acc = (p * acc + (this.words[i] | 0)) % num; + } + + return acc; + }; + + // In-place division by number + BN.prototype.idivn = function idivn (num) { + assert(num <= 0x3ffffff); + + var carry = 0; + for (var i = this.length - 1; i >= 0; i--) { + var w = (this.words[i] | 0) + carry * 0x4000000; + this.words[i] = (w / num) | 0; + carry = w % num; + } + + return this.strip(); + }; + + BN.prototype.divn = function divn (num) { + return this.clone().idivn(num); + }; + + BN.prototype.egcd = function egcd (p) { + assert(p.negative === 0); + assert(!p.isZero()); + + var x = this; + var y = p.clone(); + + if (x.negative !== 0) { + x = x.umod(p); + } else { + x = x.clone(); + } + + // A * x + B * y = x + var A = new BN(1); + var B = new BN(0); + + // C * x + D * y = y + var C = new BN(0); + var D = new BN(1); + + var g = 0; + + while (x.isEven() && y.isEven()) { + x.iushrn(1); + y.iushrn(1); + ++g; + } + + var yp = y.clone(); + var xp = x.clone(); + + while (!x.isZero()) { + for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1); + if (i > 0) { + x.iushrn(i); + while (i-- > 0) { + if (A.isOdd() || B.isOdd()) { + A.iadd(yp); + B.isub(xp); + } + + A.iushrn(1); + B.iushrn(1); + } + } + + for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1); + if (j > 0) { + y.iushrn(j); + while (j-- > 0) { + if (C.isOdd() || D.isOdd()) { + C.iadd(yp); + D.isub(xp); + } + + C.iushrn(1); + D.iushrn(1); + } + } + + if (x.cmp(y) >= 0) { + x.isub(y); + A.isub(C); + B.isub(D); + } else { + y.isub(x); + C.isub(A); + D.isub(B); + } + } + + return { + a: C, + b: D, + gcd: y.iushln(g) + }; + }; + + // This is reduced incarnation of the binary EEA + // above, designated to invert members of the + // _prime_ fields F(p) at a maximal speed + BN.prototype._invmp = function _invmp (p) { + assert(p.negative === 0); + assert(!p.isZero()); + + var a = this; + var b = p.clone(); + + if (a.negative !== 0) { + a = a.umod(p); + } else { + a = a.clone(); + } + + var x1 = new BN(1); + var x2 = new BN(0); + + var delta = b.clone(); + + while (a.cmpn(1) > 0 && b.cmpn(1) > 0) { + for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1); + if (i > 0) { + a.iushrn(i); + while (i-- > 0) { + if (x1.isOdd()) { + x1.iadd(delta); + } + + x1.iushrn(1); + } + } + + for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1); + if (j > 0) { + b.iushrn(j); + while (j-- > 0) { + if (x2.isOdd()) { + x2.iadd(delta); + } + + x2.iushrn(1); + } + } + + if (a.cmp(b) >= 0) { + a.isub(b); + x1.isub(x2); + } else { + b.isub(a); + x2.isub(x1); + } + } + + var res; + if (a.cmpn(1) === 0) { + res = x1; + } else { + res = x2; + } + + if (res.cmpn(0) < 0) { + res.iadd(p); + } + + return res; + }; + + BN.prototype.gcd = function gcd (num) { + if (this.isZero()) return num.abs(); + if (num.isZero()) return this.abs(); + + var a = this.clone(); + var b = num.clone(); + a.negative = 0; + b.negative = 0; + + // Remove common factor of two + for (var shift = 0; a.isEven() && b.isEven(); shift++) { + a.iushrn(1); + b.iushrn(1); + } + + do { + while (a.isEven()) { + a.iushrn(1); + } + while (b.isEven()) { + b.iushrn(1); + } + + var r = a.cmp(b); + if (r < 0) { + // Swap `a` and `b` to make `a` always bigger than `b` + var t = a; + a = b; + b = t; + } else if (r === 0 || b.cmpn(1) === 0) { + break; + } + + a.isub(b); + } while (true); + + return b.iushln(shift); + }; + + // Invert number in the field F(num) + BN.prototype.invm = function invm (num) { + return this.egcd(num).a.umod(num); + }; + + BN.prototype.isEven = function isEven () { + return (this.words[0] & 1) === 0; + }; + + BN.prototype.isOdd = function isOdd () { + return (this.words[0] & 1) === 1; + }; + + // And first word and num + BN.prototype.andln = function andln (num) { + return this.words[0] & num; + }; + + // Increment at the bit position in-line + BN.prototype.bincn = function bincn (bit) { + assert(typeof bit === 'number'); + var r = bit % 26; + var s = (bit - r) / 26; + var q = 1 << r; + + // Fast case: bit is much higher than all existing words + if (this.length <= s) { + this._expand(s + 1); + this.words[s] |= q; + return this; + } + + // Add bit and propagate, if needed + var carry = q; + for (var i = s; carry !== 0 && i < this.length; i++) { + var w = this.words[i] | 0; + w += carry; + carry = w >>> 26; + w &= 0x3ffffff; + this.words[i] = w; + } + if (carry !== 0) { + this.words[i] = carry; + this.length++; + } + return this; + }; + + BN.prototype.isZero = function isZero () { + return this.length === 1 && this.words[0] === 0; + }; + + BN.prototype.cmpn = function cmpn (num) { + var negative = num < 0; + + if (this.negative !== 0 && !negative) return -1; + if (this.negative === 0 && negative) return 1; + + this.strip(); + + var res; + if (this.length > 1) { + res = 1; + } else { + if (negative) { + num = -num; + } + + assert(num <= 0x3ffffff, 'Number is too big'); + + var w = this.words[0] | 0; + res = w === num ? 0 : w < num ? -1 : 1; + } + if (this.negative !== 0) return -res | 0; + return res; + }; + + // Compare two numbers and return: + // 1 - if `this` > `num` + // 0 - if `this` == `num` + // -1 - if `this` < `num` + BN.prototype.cmp = function cmp (num) { + if (this.negative !== 0 && num.negative === 0) return -1; + if (this.negative === 0 && num.negative !== 0) return 1; + + var res = this.ucmp(num); + if (this.negative !== 0) return -res | 0; + return res; + }; + + // Unsigned comparison + BN.prototype.ucmp = function ucmp (num) { + // At this point both numbers have the same sign + if (this.length > num.length) return 1; + if (this.length < num.length) return -1; + + var res = 0; + for (var i = this.length - 1; i >= 0; i--) { + var a = this.words[i] | 0; + var b = num.words[i] | 0; + + if (a === b) continue; + if (a < b) { + res = -1; + } else if (a > b) { + res = 1; + } + break; + } + return res; + }; + + BN.prototype.gtn = function gtn (num) { + return this.cmpn(num) === 1; + }; + + BN.prototype.gt = function gt (num) { + return this.cmp(num) === 1; + }; + + BN.prototype.gten = function gten (num) { + return this.cmpn(num) >= 0; + }; + + BN.prototype.gte = function gte (num) { + return this.cmp(num) >= 0; + }; + + BN.prototype.ltn = function ltn (num) { + return this.cmpn(num) === -1; + }; + + BN.prototype.lt = function lt (num) { + return this.cmp(num) === -1; + }; + + BN.prototype.lten = function lten (num) { + return this.cmpn(num) <= 0; + }; + + BN.prototype.lte = function lte (num) { + return this.cmp(num) <= 0; + }; + + BN.prototype.eqn = function eqn (num) { + return this.cmpn(num) === 0; + }; + + BN.prototype.eq = function eq (num) { + return this.cmp(num) === 0; + }; + + // + // A reduce context, could be using montgomery or something better, depending + // on the `m` itself. + // + BN.red = function red (num) { + return new Red(num); + }; + + BN.prototype.toRed = function toRed (ctx) { + assert(!this.red, 'Already a number in reduction context'); + assert(this.negative === 0, 'red works only with positives'); + return ctx.convertTo(this)._forceRed(ctx); + }; + + BN.prototype.fromRed = function fromRed () { + assert(this.red, 'fromRed works only with numbers in reduction context'); + return this.red.convertFrom(this); + }; + + BN.prototype._forceRed = function _forceRed (ctx) { + this.red = ctx; + return this; + }; + + BN.prototype.forceRed = function forceRed (ctx) { + assert(!this.red, 'Already a number in reduction context'); + return this._forceRed(ctx); + }; + + BN.prototype.redAdd = function redAdd (num) { + assert(this.red, 'redAdd works only with red numbers'); + return this.red.add(this, num); + }; + + BN.prototype.redIAdd = function redIAdd (num) { + assert(this.red, 'redIAdd works only with red numbers'); + return this.red.iadd(this, num); + }; + + BN.prototype.redSub = function redSub (num) { + assert(this.red, 'redSub works only with red numbers'); + return this.red.sub(this, num); + }; + + BN.prototype.redISub = function redISub (num) { + assert(this.red, 'redISub works only with red numbers'); + return this.red.isub(this, num); + }; + + BN.prototype.redShl = function redShl (num) { + assert(this.red, 'redShl works only with red numbers'); + return this.red.shl(this, num); + }; + + BN.prototype.redMul = function redMul (num) { + assert(this.red, 'redMul works only with red numbers'); + this.red._verify2(this, num); + return this.red.mul(this, num); + }; + + BN.prototype.redIMul = function redIMul (num) { + assert(this.red, 'redMul works only with red numbers'); + this.red._verify2(this, num); + return this.red.imul(this, num); + }; + + BN.prototype.redSqr = function redSqr () { + assert(this.red, 'redSqr works only with red numbers'); + this.red._verify1(this); + return this.red.sqr(this); + }; + + BN.prototype.redISqr = function redISqr () { + assert(this.red, 'redISqr works only with red numbers'); + this.red._verify1(this); + return this.red.isqr(this); + }; + + // Square root over p + BN.prototype.redSqrt = function redSqrt () { + assert(this.red, 'redSqrt works only with red numbers'); + this.red._verify1(this); + return this.red.sqrt(this); + }; + + BN.prototype.redInvm = function redInvm () { + assert(this.red, 'redInvm works only with red numbers'); + this.red._verify1(this); + return this.red.invm(this); + }; + + // Return negative clone of `this` % `red modulo` + BN.prototype.redNeg = function redNeg () { + assert(this.red, 'redNeg works only with red numbers'); + this.red._verify1(this); + return this.red.neg(this); + }; + + BN.prototype.redPow = function redPow (num) { + assert(this.red && !num.red, 'redPow(normalNum)'); + this.red._verify1(this); + return this.red.pow(this, num); + }; + + // Prime numbers with efficient reduction + var primes = { + k256: null, + p224: null, + p192: null, + p25519: null + }; + + // Pseudo-Mersenne prime + function MPrime (name, p) { + // P = 2 ^ N - K + this.name = name; + this.p = new BN(p, 16); + this.n = this.p.bitLength(); + this.k = new BN(1).iushln(this.n).isub(this.p); + + this.tmp = this._tmp(); + } + + MPrime.prototype._tmp = function _tmp () { + var tmp = new BN(null); + tmp.words = new Array(Math.ceil(this.n / 13)); + return tmp; + }; + + MPrime.prototype.ireduce = function ireduce (num) { + // Assumes that `num` is less than `P^2` + // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P) + var r = num; + var rlen; + + do { + this.split(r, this.tmp); + r = this.imulK(r); + r = r.iadd(this.tmp); + rlen = r.bitLength(); + } while (rlen > this.n); + + var cmp = rlen < this.n ? -1 : r.ucmp(this.p); + if (cmp === 0) { + r.words[0] = 0; + r.length = 1; + } else if (cmp > 0) { + r.isub(this.p); + } else { + r.strip(); + } + + return r; + }; + + MPrime.prototype.split = function split (input, out) { + input.iushrn(this.n, 0, out); + }; + + MPrime.prototype.imulK = function imulK (num) { + return num.imul(this.k); + }; + + function K256 () { + MPrime.call( + this, + 'k256', + 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f'); + } + inherits(K256, MPrime); + + K256.prototype.split = function split (input, output) { + // 256 = 9 * 26 + 22 + var mask = 0x3fffff; + + var outLen = Math.min(input.length, 9); + for (var i = 0; i < outLen; i++) { + output.words[i] = input.words[i]; + } + output.length = outLen; + + if (input.length <= 9) { + input.words[0] = 0; + input.length = 1; + return; + } + + // Shift by 9 limbs + var prev = input.words[9]; + output.words[output.length++] = prev & mask; + + for (i = 10; i < input.length; i++) { + var next = input.words[i] | 0; + input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22); + prev = next; + } + prev >>>= 22; + input.words[i - 10] = prev; + if (prev === 0 && input.length > 10) { + input.length -= 10; + } else { + input.length -= 9; + } + }; + + K256.prototype.imulK = function imulK (num) { + // K = 0x1000003d1 = [ 0x40, 0x3d1 ] + num.words[num.length] = 0; + num.words[num.length + 1] = 0; + num.length += 2; + + // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390 + var lo = 0; + for (var i = 0; i < num.length; i++) { + var w = num.words[i] | 0; + lo += w * 0x3d1; + num.words[i] = lo & 0x3ffffff; + lo = w * 0x40 + ((lo / 0x4000000) | 0); + } + + // Fast length reduction + if (num.words[num.length - 1] === 0) { + num.length--; + if (num.words[num.length - 1] === 0) { + num.length--; + } + } + return num; + }; + + function P224 () { + MPrime.call( + this, + 'p224', + 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001'); + } + inherits(P224, MPrime); + + function P192 () { + MPrime.call( + this, + 'p192', + 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff'); + } + inherits(P192, MPrime); + + function P25519 () { + // 2 ^ 255 - 19 + MPrime.call( + this, + '25519', + '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed'); + } + inherits(P25519, MPrime); + + P25519.prototype.imulK = function imulK (num) { + // K = 0x13 + var carry = 0; + for (var i = 0; i < num.length; i++) { + var hi = (num.words[i] | 0) * 0x13 + carry; + var lo = hi & 0x3ffffff; + hi >>>= 26; + + num.words[i] = lo; + carry = hi; + } + if (carry !== 0) { + num.words[num.length++] = carry; + } + return num; + }; + + // Exported mostly for testing purposes, use plain name instead + BN._prime = function prime (name) { + // Cached version of prime + if (primes[name]) return primes[name]; + + var prime; + if (name === 'k256') { + prime = new K256(); + } else if (name === 'p224') { + prime = new P224(); + } else if (name === 'p192') { + prime = new P192(); + } else if (name === 'p25519') { + prime = new P25519(); + } else { + throw new Error('Unknown prime ' + name); + } + primes[name] = prime; + + return prime; + }; + + // + // Base reduction engine + // + function Red (m) { + if (typeof m === 'string') { + var prime = BN._prime(m); + this.m = prime.p; + this.prime = prime; + } else { + assert(m.gtn(1), 'modulus must be greater than 1'); + this.m = m; + this.prime = null; + } + } + + Red.prototype._verify1 = function _verify1 (a) { + assert(a.negative === 0, 'red works only with positives'); + assert(a.red, 'red works only with red numbers'); + }; + + Red.prototype._verify2 = function _verify2 (a, b) { + assert((a.negative | b.negative) === 0, 'red works only with positives'); + assert(a.red && a.red === b.red, + 'red works only with red numbers'); + }; + + Red.prototype.imod = function imod (a) { + if (this.prime) return this.prime.ireduce(a)._forceRed(this); + return a.umod(this.m)._forceRed(this); + }; + + Red.prototype.neg = function neg (a) { + if (a.isZero()) { + return a.clone(); + } + + return this.m.sub(a)._forceRed(this); + }; + + Red.prototype.add = function add (a, b) { + this._verify2(a, b); + + var res = a.add(b); + if (res.cmp(this.m) >= 0) { + res.isub(this.m); + } + return res._forceRed(this); + }; + + Red.prototype.iadd = function iadd (a, b) { + this._verify2(a, b); + + var res = a.iadd(b); + if (res.cmp(this.m) >= 0) { + res.isub(this.m); + } + return res; + }; + + Red.prototype.sub = function sub (a, b) { + this._verify2(a, b); + + var res = a.sub(b); + if (res.cmpn(0) < 0) { + res.iadd(this.m); + } + return res._forceRed(this); + }; + + Red.prototype.isub = function isub (a, b) { + this._verify2(a, b); + + var res = a.isub(b); + if (res.cmpn(0) < 0) { + res.iadd(this.m); + } + return res; + }; + + Red.prototype.shl = function shl (a, num) { + this._verify1(a); + return this.imod(a.ushln(num)); + }; + + Red.prototype.imul = function imul (a, b) { + this._verify2(a, b); + return this.imod(a.imul(b)); + }; + + Red.prototype.mul = function mul (a, b) { + this._verify2(a, b); + return this.imod(a.mul(b)); + }; + + Red.prototype.isqr = function isqr (a) { + return this.imul(a, a.clone()); + }; + + Red.prototype.sqr = function sqr (a) { + return this.mul(a, a); + }; + + Red.prototype.sqrt = function sqrt (a) { + if (a.isZero()) return a.clone(); + + var mod3 = this.m.andln(3); + assert(mod3 % 2 === 1); + + // Fast case + if (mod3 === 3) { + var pow = this.m.add(new BN(1)).iushrn(2); + return this.pow(a, pow); + } + + // Tonelli-Shanks algorithm (Totally unoptimized and slow) + // + // Find Q and S, that Q * 2 ^ S = (P - 1) + var q = this.m.subn(1); + var s = 0; + while (!q.isZero() && q.andln(1) === 0) { + s++; + q.iushrn(1); + } + assert(!q.isZero()); + + var one = new BN(1).toRed(this); + var nOne = one.redNeg(); + + // Find quadratic non-residue + // NOTE: Max is such because of generalized Riemann hypothesis. + var lpow = this.m.subn(1).iushrn(1); + var z = this.m.bitLength(); + z = new BN(2 * z * z).toRed(this); + + while (this.pow(z, lpow).cmp(nOne) !== 0) { + z.redIAdd(nOne); + } + + var c = this.pow(z, q); + var r = this.pow(a, q.addn(1).iushrn(1)); + var t = this.pow(a, q); + var m = s; + while (t.cmp(one) !== 0) { + var tmp = t; + for (var i = 0; tmp.cmp(one) !== 0; i++) { + tmp = tmp.redSqr(); + } + assert(i < m); + var b = this.pow(c, new BN(1).iushln(m - i - 1)); + + r = r.redMul(b); + c = b.redSqr(); + t = t.redMul(c); + m = i; + } + + return r; + }; + + Red.prototype.invm = function invm (a) { + var inv = a._invmp(this.m); + if (inv.negative !== 0) { + inv.negative = 0; + return this.imod(inv).redNeg(); + } else { + return this.imod(inv); + } + }; + + Red.prototype.pow = function pow (a, num) { + if (num.isZero()) return new BN(1).toRed(this); + if (num.cmpn(1) === 0) return a.clone(); + + var windowSize = 4; + var wnd = new Array(1 << windowSize); + wnd[0] = new BN(1).toRed(this); + wnd[1] = a; + for (var i = 2; i < wnd.length; i++) { + wnd[i] = this.mul(wnd[i - 1], a); + } + + var res = wnd[0]; + var current = 0; + var currentLen = 0; + var start = num.bitLength() % 26; + if (start === 0) { + start = 26; + } + + for (i = num.length - 1; i >= 0; i--) { + var word = num.words[i]; + for (var j = start - 1; j >= 0; j--) { + var bit = (word >> j) & 1; + if (res !== wnd[0]) { + res = this.sqr(res); + } + + if (bit === 0 && current === 0) { + currentLen = 0; + continue; + } + + current <<= 1; + current |= bit; + currentLen++; + if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue; + + res = this.mul(res, wnd[current]); + currentLen = 0; + current = 0; + } + start = 26; + } + + return res; + }; + + Red.prototype.convertTo = function convertTo (num) { + var r = num.umod(this.m); + + return r === num ? r.clone() : r; + }; + + Red.prototype.convertFrom = function convertFrom (num) { + var res = num.clone(); + res.red = null; + return res; + }; + + // + // Montgomery method engine + // + + BN.mont = function mont (num) { + return new Mont(num); + }; + + function Mont (m) { + Red.call(this, m); + + this.shift = this.m.bitLength(); + if (this.shift % 26 !== 0) { + this.shift += 26 - (this.shift % 26); + } + + this.r = new BN(1).iushln(this.shift); + this.r2 = this.imod(this.r.sqr()); + this.rinv = this.r._invmp(this.m); + + this.minv = this.rinv.mul(this.r).isubn(1).div(this.m); + this.minv = this.minv.umod(this.r); + this.minv = this.r.sub(this.minv); + } + inherits(Mont, Red); + + Mont.prototype.convertTo = function convertTo (num) { + return this.imod(num.ushln(this.shift)); + }; + + Mont.prototype.convertFrom = function convertFrom (num) { + var r = this.imod(num.mul(this.rinv)); + r.red = null; + return r; + }; + + Mont.prototype.imul = function imul (a, b) { + if (a.isZero() || b.isZero()) { + a.words[0] = 0; + a.length = 1; + return a; + } + + var t = a.imul(b); + var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m); + var u = t.isub(c).iushrn(this.shift); + var res = u; + + if (u.cmp(this.m) >= 0) { + res = u.isub(this.m); + } else if (u.cmpn(0) < 0) { + res = u.iadd(this.m); + } + + return res._forceRed(this); + }; + + Mont.prototype.mul = function mul (a, b) { + if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this); + + var t = a.mul(b); + var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m); + var u = t.isub(c).iushrn(this.shift); + var res = u; + if (u.cmp(this.m) >= 0) { + res = u.isub(this.m); + } else if (u.cmpn(0) < 0) { + res = u.iadd(this.m); + } + + return res._forceRed(this); + }; + + Mont.prototype.invm = function invm (a) { + // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R + var res = this.imod(a._invmp(this.m).mul(this.r2)); + return res._forceRed(this); + }; +})(typeof module === 'undefined' || module, this); + +},{"buffer":110}],109:[function(require,module,exports){ +var r; + +module.exports = function rand(len) { + if (!r) + r = new Rand(null); + + return r.generate(len); +}; + +function Rand(rand) { + this.rand = rand; +} +module.exports.Rand = Rand; + +Rand.prototype.generate = function generate(len) { + return this._rand(len); +}; + +// Emulate crypto API using randy +Rand.prototype._rand = function _rand(n) { + if (this.rand.getBytes) + return this.rand.getBytes(n); + + var res = new Uint8Array(n); + for (var i = 0; i < res.length; i++) + res[i] = this.rand.getByte(); + return res; +}; + +if (typeof self === 'object') { + if (self.crypto && self.crypto.getRandomValues) { + // Modern browsers + Rand.prototype._rand = function _rand(n) { + var arr = new Uint8Array(n); + self.crypto.getRandomValues(arr); + return arr; + }; + } else if (self.msCrypto && self.msCrypto.getRandomValues) { + // IE + Rand.prototype._rand = function _rand(n) { + var arr = new Uint8Array(n); + self.msCrypto.getRandomValues(arr); + return arr; + }; + + // Safari's WebWorkers do not have `crypto` + } else if (typeof window === 'object') { + // Old junk + Rand.prototype._rand = function() { + throw new Error('Not implemented yet'); + }; + } +} else { + // Node.js or Web worker with no crypto support + try { + var crypto = require('crypto'); + if (typeof crypto.randomBytes !== 'function') + throw new Error('Not supported'); + + Rand.prototype._rand = function _rand(n) { + return crypto.randomBytes(n); + }; + } catch (e) { + } +} + +},{"crypto":110}],110:[function(require,module,exports){ + +},{}],111:[function(require,module,exports){ +// based on the aes implimentation in triple sec +// https://github.com/keybase/triplesec +// which is in turn based on the one from crypto-js +// https://code.google.com/p/crypto-js/ + +var Buffer = require('safe-buffer').Buffer + +function asUInt32Array (buf) { + if (!Buffer.isBuffer(buf)) buf = Buffer.from(buf) + + var len = (buf.length / 4) | 0 + var out = new Array(len) + + for (var i = 0; i < len; i++) { + out[i] = buf.readUInt32BE(i * 4) + } + + return out +} + +function scrubVec (v) { + for (var i = 0; i < v.length; v++) { + v[i] = 0 + } +} + +function cryptBlock (M, keySchedule, SUB_MIX, SBOX, nRounds) { + var SUB_MIX0 = SUB_MIX[0] + var SUB_MIX1 = SUB_MIX[1] + var SUB_MIX2 = SUB_MIX[2] + var SUB_MIX3 = SUB_MIX[3] + + var s0 = M[0] ^ keySchedule[0] + var s1 = M[1] ^ keySchedule[1] + var s2 = M[2] ^ keySchedule[2] + var s3 = M[3] ^ keySchedule[3] + var t0, t1, t2, t3 + var ksRow = 4 + + for (var round = 1; round < nRounds; round++) { + t0 = SUB_MIX0[s0 >>> 24] ^ SUB_MIX1[(s1 >>> 16) & 0xff] ^ SUB_MIX2[(s2 >>> 8) & 0xff] ^ SUB_MIX3[s3 & 0xff] ^ keySchedule[ksRow++] + t1 = SUB_MIX0[s1 >>> 24] ^ SUB_MIX1[(s2 >>> 16) & 0xff] ^ SUB_MIX2[(s3 >>> 8) & 0xff] ^ SUB_MIX3[s0 & 0xff] ^ keySchedule[ksRow++] + t2 = SUB_MIX0[s2 >>> 24] ^ SUB_MIX1[(s3 >>> 16) & 0xff] ^ SUB_MIX2[(s0 >>> 8) & 0xff] ^ SUB_MIX3[s1 & 0xff] ^ keySchedule[ksRow++] + t3 = SUB_MIX0[s3 >>> 24] ^ SUB_MIX1[(s0 >>> 16) & 0xff] ^ SUB_MIX2[(s1 >>> 8) & 0xff] ^ SUB_MIX3[s2 & 0xff] ^ keySchedule[ksRow++] + s0 = t0 + s1 = t1 + s2 = t2 + s3 = t3 + } + + t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++] + t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++] + t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++] + t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++] + t0 = t0 >>> 0 + t1 = t1 >>> 0 + t2 = t2 >>> 0 + t3 = t3 >>> 0 + + return [t0, t1, t2, t3] +} + +// AES constants +var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36] +var G = (function () { + // Compute double table + var d = new Array(256) + for (var j = 0; j < 256; j++) { + if (j < 128) { + d[j] = j << 1 + } else { + d[j] = (j << 1) ^ 0x11b + } + } + + var SBOX = [] + var INV_SBOX = [] + var SUB_MIX = [[], [], [], []] + var INV_SUB_MIX = [[], [], [], []] + + // Walk GF(2^8) + var x = 0 + var xi = 0 + for (var i = 0; i < 256; ++i) { + // Compute sbox + var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4) + sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63 + SBOX[x] = sx + INV_SBOX[sx] = x + + // Compute multiplication + var x2 = d[x] + var x4 = d[x2] + var x8 = d[x4] + + // Compute sub bytes, mix columns tables + var t = (d[sx] * 0x101) ^ (sx * 0x1010100) + SUB_MIX[0][x] = (t << 24) | (t >>> 8) + SUB_MIX[1][x] = (t << 16) | (t >>> 16) + SUB_MIX[2][x] = (t << 8) | (t >>> 24) + SUB_MIX[3][x] = t + + // Compute inv sub bytes, inv mix columns tables + t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100) + INV_SUB_MIX[0][sx] = (t << 24) | (t >>> 8) + INV_SUB_MIX[1][sx] = (t << 16) | (t >>> 16) + INV_SUB_MIX[2][sx] = (t << 8) | (t >>> 24) + INV_SUB_MIX[3][sx] = t + + if (x === 0) { + x = xi = 1 + } else { + x = x2 ^ d[d[d[x8 ^ x2]]] + xi ^= d[d[xi]] + } + } + + return { + SBOX: SBOX, + INV_SBOX: INV_SBOX, + SUB_MIX: SUB_MIX, + INV_SUB_MIX: INV_SUB_MIX + } +})() + +function AES (key) { + this._key = asUInt32Array(key) + this._reset() +} + +AES.blockSize = 4 * 4 +AES.keySize = 256 / 8 +AES.prototype.blockSize = AES.blockSize +AES.prototype.keySize = AES.keySize +AES.prototype._reset = function () { + var keyWords = this._key + var keySize = keyWords.length + var nRounds = keySize + 6 + var ksRows = (nRounds + 1) * 4 + + var keySchedule = [] + for (var k = 0; k < keySize; k++) { + keySchedule[k] = keyWords[k] + } + + for (k = keySize; k < ksRows; k++) { + var t = keySchedule[k - 1] + + if (k % keySize === 0) { + t = (t << 8) | (t >>> 24) + t = + (G.SBOX[t >>> 24] << 24) | + (G.SBOX[(t >>> 16) & 0xff] << 16) | + (G.SBOX[(t >>> 8) & 0xff] << 8) | + (G.SBOX[t & 0xff]) + + t ^= RCON[(k / keySize) | 0] << 24 + } else if (keySize > 6 && k % keySize === 4) { + t = + (G.SBOX[t >>> 24] << 24) | + (G.SBOX[(t >>> 16) & 0xff] << 16) | + (G.SBOX[(t >>> 8) & 0xff] << 8) | + (G.SBOX[t & 0xff]) + } + + keySchedule[k] = keySchedule[k - keySize] ^ t + } + + var invKeySchedule = [] + for (var ik = 0; ik < ksRows; ik++) { + var ksR = ksRows - ik + var tt = keySchedule[ksR - (ik % 4 ? 0 : 4)] + + if (ik < 4 || ksR <= 4) { + invKeySchedule[ik] = tt + } else { + invKeySchedule[ik] = + G.INV_SUB_MIX[0][G.SBOX[tt >>> 24]] ^ + G.INV_SUB_MIX[1][G.SBOX[(tt >>> 16) & 0xff]] ^ + G.INV_SUB_MIX[2][G.SBOX[(tt >>> 8) & 0xff]] ^ + G.INV_SUB_MIX[3][G.SBOX[tt & 0xff]] + } + } + + this._nRounds = nRounds + this._keySchedule = keySchedule + this._invKeySchedule = invKeySchedule +} + +AES.prototype.encryptBlockRaw = function (M) { + M = asUInt32Array(M) + return cryptBlock(M, this._keySchedule, G.SUB_MIX, G.SBOX, this._nRounds) +} + +AES.prototype.encryptBlock = function (M) { + var out = this.encryptBlockRaw(M) + var buf = Buffer.allocUnsafe(16) + buf.writeUInt32BE(out[0], 0) + buf.writeUInt32BE(out[1], 4) + buf.writeUInt32BE(out[2], 8) + buf.writeUInt32BE(out[3], 12) + return buf +} + +AES.prototype.decryptBlock = function (M) { + M = asUInt32Array(M) + + // swap + var m1 = M[1] + M[1] = M[3] + M[3] = m1 + + var out = cryptBlock(M, this._invKeySchedule, G.INV_SUB_MIX, G.INV_SBOX, this._nRounds) + var buf = Buffer.allocUnsafe(16) + buf.writeUInt32BE(out[0], 0) + buf.writeUInt32BE(out[3], 4) + buf.writeUInt32BE(out[2], 8) + buf.writeUInt32BE(out[1], 12) + return buf +} + +AES.prototype.scrub = function () { + scrubVec(this._keySchedule) + scrubVec(this._invKeySchedule) + scrubVec(this._key) +} + +module.exports.AES = AES + +},{"safe-buffer":742}],112:[function(require,module,exports){ +var aes = require('./aes') +var Buffer = require('safe-buffer').Buffer +var Transform = require('cipher-base') +var inherits = require('inherits') +var GHASH = require('./ghash') +var xor = require('buffer-xor') +var incr32 = require('./incr32') + +function xorTest (a, b) { + var out = 0 + if (a.length !== b.length) out++ + + var len = Math.min(a.length, b.length) + for (var i = 0; i < len; ++i) { + out += (a[i] ^ b[i]) + } + + return out +} + +function calcIv (self, iv, ck) { + if (iv.length === 12) { + self._finID = Buffer.concat([iv, Buffer.from([0, 0, 0, 1])]) + return Buffer.concat([iv, Buffer.from([0, 0, 0, 2])]) + } + var ghash = new GHASH(ck) + var len = iv.length + var toPad = len % 16 + ghash.update(iv) + if (toPad) { + toPad = 16 - toPad + ghash.update(Buffer.alloc(toPad, 0)) + } + ghash.update(Buffer.alloc(8, 0)) + var ivBits = len * 8 + var tail = Buffer.alloc(8) + tail.writeUIntBE(ivBits, 0, 8) + ghash.update(tail) + self._finID = ghash.state + var out = Buffer.from(self._finID) + incr32(out) + return out +} +function StreamCipher (mode, key, iv, decrypt) { + Transform.call(this) + + var h = Buffer.alloc(4, 0) + + this._cipher = new aes.AES(key) + var ck = this._cipher.encryptBlock(h) + this._ghash = new GHASH(ck) + iv = calcIv(this, iv, ck) + + this._prev = Buffer.from(iv) + this._cache = Buffer.allocUnsafe(0) + this._secCache = Buffer.allocUnsafe(0) + this._decrypt = decrypt + this._alen = 0 + this._len = 0 + this._mode = mode + + this._authTag = null + this._called = false +} + +inherits(StreamCipher, Transform) + +StreamCipher.prototype._update = function (chunk) { + if (!this._called && this._alen) { + var rump = 16 - (this._alen % 16) + if (rump < 16) { + rump = Buffer.alloc(rump, 0) + this._ghash.update(rump) + } + } + + this._called = true + var out = this._mode.encrypt(this, chunk) + if (this._decrypt) { + this._ghash.update(chunk) + } else { + this._ghash.update(out) + } + this._len += chunk.length + return out +} + +StreamCipher.prototype._final = function () { + if (this._decrypt && !this._authTag) throw new Error('Unsupported state or unable to authenticate data') + + var tag = xor(this._ghash.final(this._alen * 8, this._len * 8), this._cipher.encryptBlock(this._finID)) + if (this._decrypt && xorTest(tag, this._authTag)) throw new Error('Unsupported state or unable to authenticate data') + + this._authTag = tag + this._cipher.scrub() +} + +StreamCipher.prototype.getAuthTag = function getAuthTag () { + if (this._decrypt || !Buffer.isBuffer(this._authTag)) throw new Error('Attempting to get auth tag in unsupported state') + + return this._authTag +} + +StreamCipher.prototype.setAuthTag = function setAuthTag (tag) { + if (!this._decrypt) throw new Error('Attempting to set auth tag in unsupported state') + + this._authTag = tag +} + +StreamCipher.prototype.setAAD = function setAAD (buf) { + if (this._called) throw new Error('Attempting to set AAD in unsupported state') + + this._ghash.update(buf) + this._alen += buf.length +} + +module.exports = StreamCipher + +},{"./aes":111,"./ghash":116,"./incr32":117,"buffer-xor":144,"cipher-base":155,"inherits":396,"safe-buffer":742}],113:[function(require,module,exports){ +var ciphers = require('./encrypter') +var deciphers = require('./decrypter') +var modes = require('./modes/list.json') + +function getCiphers () { + return Object.keys(modes) +} + +exports.createCipher = exports.Cipher = ciphers.createCipher +exports.createCipheriv = exports.Cipheriv = ciphers.createCipheriv +exports.createDecipher = exports.Decipher = deciphers.createDecipher +exports.createDecipheriv = exports.Decipheriv = deciphers.createDecipheriv +exports.listCiphers = exports.getCiphers = getCiphers + +},{"./decrypter":114,"./encrypter":115,"./modes/list.json":125}],114:[function(require,module,exports){ +var AuthCipher = require('./authCipher') +var Buffer = require('safe-buffer').Buffer +var MODES = require('./modes') +var StreamCipher = require('./streamCipher') +var Transform = require('cipher-base') +var aes = require('./aes') +var ebtk = require('evp_bytestokey') +var inherits = require('inherits') + +function Decipher (mode, key, iv) { + Transform.call(this) + + this._cache = new Splitter() + this._last = void 0 + this._cipher = new aes.AES(key) + this._prev = Buffer.from(iv) + this._mode = mode + this._autopadding = true +} + +inherits(Decipher, Transform) + +Decipher.prototype._update = function (data) { + this._cache.add(data) + var chunk + var thing + var out = [] + while ((chunk = this._cache.get(this._autopadding))) { + thing = this._mode.decrypt(this, chunk) + out.push(thing) + } + return Buffer.concat(out) +} + +Decipher.prototype._final = function () { + var chunk = this._cache.flush() + if (this._autopadding) { + return unpad(this._mode.decrypt(this, chunk)) + } else if (chunk) { + throw new Error('data not multiple of block length') + } +} + +Decipher.prototype.setAutoPadding = function (setTo) { + this._autopadding = !!setTo + return this +} + +function Splitter () { + this.cache = Buffer.allocUnsafe(0) +} + +Splitter.prototype.add = function (data) { + this.cache = Buffer.concat([this.cache, data]) +} + +Splitter.prototype.get = function (autoPadding) { + var out + if (autoPadding) { + if (this.cache.length > 16) { + out = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + return out + } + } else { + if (this.cache.length >= 16) { + out = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + return out + } + } + + return null +} + +Splitter.prototype.flush = function () { + if (this.cache.length) return this.cache +} + +function unpad (last) { + var padded = last[15] + if (padded < 1 || padded > 16) { + throw new Error('unable to decrypt data') + } + var i = -1 + while (++i < padded) { + if (last[(i + (16 - padded))] !== padded) { + throw new Error('unable to decrypt data') + } + } + if (padded === 16) return + + return last.slice(0, 16 - padded) +} + +function createDecipheriv (suite, password, iv) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') + + if (typeof iv === 'string') iv = Buffer.from(iv) + if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length) + + if (typeof password === 'string') password = Buffer.from(password) + if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length) + + if (config.type === 'stream') { + return new StreamCipher(config.module, password, iv, true) + } else if (config.type === 'auth') { + return new AuthCipher(config.module, password, iv, true) + } + + return new Decipher(config.module, password, iv) +} + +function createDecipher (suite, password) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') + + var keys = ebtk(password, false, config.key, config.iv) + return createDecipheriv(suite, keys.key, keys.iv) +} + +exports.createDecipher = createDecipher +exports.createDecipheriv = createDecipheriv + +},{"./aes":111,"./authCipher":112,"./modes":124,"./streamCipher":127,"cipher-base":155,"evp_bytestokey":336,"inherits":396,"safe-buffer":742}],115:[function(require,module,exports){ +var MODES = require('./modes') +var AuthCipher = require('./authCipher') +var Buffer = require('safe-buffer').Buffer +var StreamCipher = require('./streamCipher') +var Transform = require('cipher-base') +var aes = require('./aes') +var ebtk = require('evp_bytestokey') +var inherits = require('inherits') + +function Cipher (mode, key, iv) { + Transform.call(this) + + this._cache = new Splitter() + this._cipher = new aes.AES(key) + this._prev = Buffer.from(iv) + this._mode = mode + this._autopadding = true +} + +inherits(Cipher, Transform) + +Cipher.prototype._update = function (data) { + this._cache.add(data) + var chunk + var thing + var out = [] + + while ((chunk = this._cache.get())) { + thing = this._mode.encrypt(this, chunk) + out.push(thing) + } + + return Buffer.concat(out) +} + +var PADDING = Buffer.alloc(16, 0x10) + +Cipher.prototype._final = function () { + var chunk = this._cache.flush() + if (this._autopadding) { + chunk = this._mode.encrypt(this, chunk) + this._cipher.scrub() + return chunk + } + + if (!chunk.equals(PADDING)) { + this._cipher.scrub() + throw new Error('data not multiple of block length') + } +} + +Cipher.prototype.setAutoPadding = function (setTo) { + this._autopadding = !!setTo + return this +} + +function Splitter () { + this.cache = Buffer.allocUnsafe(0) +} + +Splitter.prototype.add = function (data) { + this.cache = Buffer.concat([this.cache, data]) +} + +Splitter.prototype.get = function () { + if (this.cache.length > 15) { + var out = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + return out + } + return null +} + +Splitter.prototype.flush = function () { + var len = 16 - this.cache.length + var padBuff = Buffer.allocUnsafe(len) + + var i = -1 + while (++i < len) { + padBuff.writeUInt8(len, i) + } + + return Buffer.concat([this.cache, padBuff]) +} + +function createCipheriv (suite, password, iv) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') + + if (typeof password === 'string') password = Buffer.from(password) + if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length) + + if (typeof iv === 'string') iv = Buffer.from(iv) + if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length) + + if (config.type === 'stream') { + return new StreamCipher(config.module, password, iv) + } else if (config.type === 'auth') { + return new AuthCipher(config.module, password, iv) + } + + return new Cipher(config.module, password, iv) +} + +function createCipher (suite, password) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') + + var keys = ebtk(password, false, config.key, config.iv) + return createCipheriv(suite, keys.key, keys.iv) +} + +exports.createCipheriv = createCipheriv +exports.createCipher = createCipher + +},{"./aes":111,"./authCipher":112,"./modes":124,"./streamCipher":127,"cipher-base":155,"evp_bytestokey":336,"inherits":396,"safe-buffer":742}],116:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var ZEROES = Buffer.alloc(16, 0) + +function toArray (buf) { + return [ + buf.readUInt32BE(0), + buf.readUInt32BE(4), + buf.readUInt32BE(8), + buf.readUInt32BE(12) + ] +} + +function fromArray (out) { + var buf = Buffer.allocUnsafe(16) + buf.writeUInt32BE(out[0] >>> 0, 0) + buf.writeUInt32BE(out[1] >>> 0, 4) + buf.writeUInt32BE(out[2] >>> 0, 8) + buf.writeUInt32BE(out[3] >>> 0, 12) + return buf +} + +function GHASH (key) { + this.h = key + this.state = Buffer.alloc(16, 0) + this.cache = Buffer.allocUnsafe(0) +} + +// from http://bitwiseshiftleft.github.io/sjcl/doc/symbols/src/core_gcm.js.html +// by Juho Vähä-Herttua +GHASH.prototype.ghash = function (block) { + var i = -1 + while (++i < block.length) { + this.state[i] ^= block[i] + } + this._multiply() +} + +GHASH.prototype._multiply = function () { + var Vi = toArray(this.h) + var Zi = [0, 0, 0, 0] + var j, xi, lsbVi + var i = -1 + while (++i < 128) { + xi = (this.state[~~(i / 8)] & (1 << (7 - (i % 8)))) !== 0 + if (xi) { + // Z_i+1 = Z_i ^ V_i + Zi[0] ^= Vi[0] + Zi[1] ^= Vi[1] + Zi[2] ^= Vi[2] + Zi[3] ^= Vi[3] + } + + // Store the value of LSB(V_i) + lsbVi = (Vi[3] & 1) !== 0 + + // V_i+1 = V_i >> 1 + for (j = 3; j > 0; j--) { + Vi[j] = (Vi[j] >>> 1) | ((Vi[j - 1] & 1) << 31) + } + Vi[0] = Vi[0] >>> 1 + + // If LSB(V_i) is 1, V_i+1 = (V_i >> 1) ^ R + if (lsbVi) { + Vi[0] = Vi[0] ^ (0xe1 << 24) + } + } + this.state = fromArray(Zi) +} + +GHASH.prototype.update = function (buf) { + this.cache = Buffer.concat([this.cache, buf]) + var chunk + while (this.cache.length >= 16) { + chunk = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + this.ghash(chunk) + } +} + +GHASH.prototype.final = function (abl, bl) { + if (this.cache.length) { + this.ghash(Buffer.concat([this.cache, ZEROES], 16)) + } + + this.ghash(fromArray([0, abl, 0, bl])) + return this.state +} + +module.exports = GHASH + +},{"safe-buffer":742}],117:[function(require,module,exports){ +function incr32 (iv) { + var len = iv.length + var item + while (len--) { + item = iv.readUInt8(len) + if (item === 255) { + iv.writeUInt8(0, len) + } else { + item++ + iv.writeUInt8(item, len) + break + } + } +} +module.exports = incr32 + +},{}],118:[function(require,module,exports){ +var xor = require('buffer-xor') + +exports.encrypt = function (self, block) { + var data = xor(block, self._prev) + + self._prev = self._cipher.encryptBlock(data) + return self._prev +} + +exports.decrypt = function (self, block) { + var pad = self._prev + + self._prev = block + var out = self._cipher.decryptBlock(block) + + return xor(out, pad) +} + +},{"buffer-xor":144}],119:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var xor = require('buffer-xor') + +function encryptStart (self, data, decrypt) { + var len = data.length + var out = xor(data, self._cache) + self._cache = self._cache.slice(len) + self._prev = Buffer.concat([self._prev, decrypt ? data : out]) + return out +} + +exports.encrypt = function (self, data, decrypt) { + var out = Buffer.allocUnsafe(0) + var len + + while (data.length) { + if (self._cache.length === 0) { + self._cache = self._cipher.encryptBlock(self._prev) + self._prev = Buffer.allocUnsafe(0) + } + + if (self._cache.length <= data.length) { + len = self._cache.length + out = Buffer.concat([out, encryptStart(self, data.slice(0, len), decrypt)]) + data = data.slice(len) + } else { + out = Buffer.concat([out, encryptStart(self, data, decrypt)]) + break + } + } + + return out +} + +},{"buffer-xor":144,"safe-buffer":742}],120:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer + +function encryptByte (self, byteParam, decrypt) { + var pad + var i = -1 + var len = 8 + var out = 0 + var bit, value + while (++i < len) { + pad = self._cipher.encryptBlock(self._prev) + bit = (byteParam & (1 << (7 - i))) ? 0x80 : 0 + value = pad[0] ^ bit + out += ((value & 0x80) >> (i % 8)) + self._prev = shiftIn(self._prev, decrypt ? bit : value) + } + return out +} + +function shiftIn (buffer, value) { + var len = buffer.length + var i = -1 + var out = Buffer.allocUnsafe(buffer.length) + buffer = Buffer.concat([buffer, Buffer.from([value])]) + + while (++i < len) { + out[i] = buffer[i] << 1 | buffer[i + 1] >> (7) + } + + return out +} + +exports.encrypt = function (self, chunk, decrypt) { + var len = chunk.length + var out = Buffer.allocUnsafe(len) + var i = -1 + + while (++i < len) { + out[i] = encryptByte(self, chunk[i], decrypt) + } + + return out +} + +},{"safe-buffer":742}],121:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer + +function encryptByte (self, byteParam, decrypt) { + var pad = self._cipher.encryptBlock(self._prev) + var out = pad[0] ^ byteParam + + self._prev = Buffer.concat([ + self._prev.slice(1), + Buffer.from([decrypt ? byteParam : out]) + ]) + + return out +} + +exports.encrypt = function (self, chunk, decrypt) { + var len = chunk.length + var out = Buffer.allocUnsafe(len) + var i = -1 + + while (++i < len) { + out[i] = encryptByte(self, chunk[i], decrypt) + } + + return out +} + +},{"safe-buffer":742}],122:[function(require,module,exports){ +var xor = require('buffer-xor') +var Buffer = require('safe-buffer').Buffer +var incr32 = require('../incr32') + +function getBlock (self) { + var out = self._cipher.encryptBlockRaw(self._prev) + incr32(self._prev) + return out +} + +var blockSize = 16 +exports.encrypt = function (self, chunk) { + var chunkNum = Math.ceil(chunk.length / blockSize) + var start = self._cache.length + self._cache = Buffer.concat([ + self._cache, + Buffer.allocUnsafe(chunkNum * blockSize) + ]) + for (var i = 0; i < chunkNum; i++) { + var out = getBlock(self) + var offset = start + i * blockSize + self._cache.writeUInt32BE(out[0], offset + 0) + self._cache.writeUInt32BE(out[1], offset + 4) + self._cache.writeUInt32BE(out[2], offset + 8) + self._cache.writeUInt32BE(out[3], offset + 12) + } + var pad = self._cache.slice(0, chunk.length) + self._cache = self._cache.slice(chunk.length) + return xor(chunk, pad) +} + +},{"../incr32":117,"buffer-xor":144,"safe-buffer":742}],123:[function(require,module,exports){ +exports.encrypt = function (self, block) { + return self._cipher.encryptBlock(block) +} + +exports.decrypt = function (self, block) { + return self._cipher.decryptBlock(block) +} + +},{}],124:[function(require,module,exports){ +var modeModules = { + ECB: require('./ecb'), + CBC: require('./cbc'), + CFB: require('./cfb'), + CFB8: require('./cfb8'), + CFB1: require('./cfb1'), + OFB: require('./ofb'), + CTR: require('./ctr'), + GCM: require('./ctr') +} + +var modes = require('./list.json') + +for (var key in modes) { + modes[key].module = modeModules[modes[key].mode] +} + +module.exports = modes + +},{"./cbc":118,"./cfb":119,"./cfb1":120,"./cfb8":121,"./ctr":122,"./ecb":123,"./list.json":125,"./ofb":126}],125:[function(require,module,exports){ +module.exports={ + "aes-128-ecb": { + "cipher": "AES", + "key": 128, + "iv": 0, + "mode": "ECB", + "type": "block" + }, + "aes-192-ecb": { + "cipher": "AES", + "key": 192, + "iv": 0, + "mode": "ECB", + "type": "block" + }, + "aes-256-ecb": { + "cipher": "AES", + "key": 256, + "iv": 0, + "mode": "ECB", + "type": "block" + }, + "aes-128-cbc": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes-192-cbc": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes-256-cbc": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes128": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes192": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes256": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes-128-cfb": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CFB", + "type": "stream" + }, + "aes-192-cfb": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CFB", + "type": "stream" + }, + "aes-256-cfb": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CFB", + "type": "stream" + }, + "aes-128-cfb8": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CFB8", + "type": "stream" + }, + "aes-192-cfb8": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CFB8", + "type": "stream" + }, + "aes-256-cfb8": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CFB8", + "type": "stream" + }, + "aes-128-cfb1": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CFB1", + "type": "stream" + }, + "aes-192-cfb1": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CFB1", + "type": "stream" + }, + "aes-256-cfb1": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CFB1", + "type": "stream" + }, + "aes-128-ofb": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "OFB", + "type": "stream" + }, + "aes-192-ofb": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "OFB", + "type": "stream" + }, + "aes-256-ofb": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "OFB", + "type": "stream" + }, + "aes-128-ctr": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CTR", + "type": "stream" + }, + "aes-192-ctr": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CTR", + "type": "stream" + }, + "aes-256-ctr": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CTR", + "type": "stream" + }, + "aes-128-gcm": { + "cipher": "AES", + "key": 128, + "iv": 12, + "mode": "GCM", + "type": "auth" + }, + "aes-192-gcm": { + "cipher": "AES", + "key": 192, + "iv": 12, + "mode": "GCM", + "type": "auth" + }, + "aes-256-gcm": { + "cipher": "AES", + "key": 256, + "iv": 12, + "mode": "GCM", + "type": "auth" + } +} + +},{}],126:[function(require,module,exports){ +(function (Buffer){ +var xor = require('buffer-xor') + +function getBlock (self) { + self._prev = self._cipher.encryptBlock(self._prev) + return self._prev +} + +exports.encrypt = function (self, chunk) { + while (self._cache.length < chunk.length) { + self._cache = Buffer.concat([self._cache, getBlock(self)]) + } + + var pad = self._cache.slice(0, chunk.length) + self._cache = self._cache.slice(chunk.length) + return xor(chunk, pad) +} + +}).call(this,require("buffer").Buffer) +},{"buffer":146,"buffer-xor":144}],127:[function(require,module,exports){ +var aes = require('./aes') +var Buffer = require('safe-buffer').Buffer +var Transform = require('cipher-base') +var inherits = require('inherits') + +function StreamCipher (mode, key, iv, decrypt) { + Transform.call(this) + + this._cipher = new aes.AES(key) + this._prev = Buffer.from(iv) + this._cache = Buffer.allocUnsafe(0) + this._secCache = Buffer.allocUnsafe(0) + this._decrypt = decrypt + this._mode = mode +} + +inherits(StreamCipher, Transform) + +StreamCipher.prototype._update = function (chunk) { + return this._mode.encrypt(this, chunk, this._decrypt) +} + +StreamCipher.prototype._final = function () { + this._cipher.scrub() +} + +module.exports = StreamCipher + +},{"./aes":111,"cipher-base":155,"inherits":396,"safe-buffer":742}],128:[function(require,module,exports){ +var DES = require('browserify-des') +var aes = require('browserify-aes/browser') +var aesModes = require('browserify-aes/modes') +var desModes = require('browserify-des/modes') +var ebtk = require('evp_bytestokey') + +function createCipher (suite, password) { + suite = suite.toLowerCase() + + var keyLen, ivLen + if (aesModes[suite]) { + keyLen = aesModes[suite].key + ivLen = aesModes[suite].iv + } else if (desModes[suite]) { + keyLen = desModes[suite].key * 8 + ivLen = desModes[suite].iv + } else { + throw new TypeError('invalid suite type') + } + + var keys = ebtk(password, false, keyLen, ivLen) + return createCipheriv(suite, keys.key, keys.iv) +} + +function createDecipher (suite, password) { + suite = suite.toLowerCase() + + var keyLen, ivLen + if (aesModes[suite]) { + keyLen = aesModes[suite].key + ivLen = aesModes[suite].iv + } else if (desModes[suite]) { + keyLen = desModes[suite].key * 8 + ivLen = desModes[suite].iv + } else { + throw new TypeError('invalid suite type') + } + + var keys = ebtk(password, false, keyLen, ivLen) + return createDecipheriv(suite, keys.key, keys.iv) +} + +function createCipheriv (suite, key, iv) { + suite = suite.toLowerCase() + if (aesModes[suite]) return aes.createCipheriv(suite, key, iv) + if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite }) + + throw new TypeError('invalid suite type') +} + +function createDecipheriv (suite, key, iv) { + suite = suite.toLowerCase() + if (aesModes[suite]) return aes.createDecipheriv(suite, key, iv) + if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite, decrypt: true }) + + throw new TypeError('invalid suite type') +} + +function getCiphers () { + return Object.keys(desModes).concat(aes.getCiphers()) +} + +exports.createCipher = exports.Cipher = createCipher +exports.createCipheriv = exports.Cipheriv = createCipheriv +exports.createDecipher = exports.Decipher = createDecipher +exports.createDecipheriv = exports.Decipheriv = createDecipheriv +exports.listCiphers = exports.getCiphers = getCiphers + +},{"browserify-aes/browser":113,"browserify-aes/modes":124,"browserify-des":129,"browserify-des/modes":130,"evp_bytestokey":336}],129:[function(require,module,exports){ +var CipherBase = require('cipher-base') +var des = require('des.js') +var inherits = require('inherits') +var Buffer = require('safe-buffer').Buffer + +var modes = { + 'des-ede3-cbc': des.CBC.instantiate(des.EDE), + 'des-ede3': des.EDE, + 'des-ede-cbc': des.CBC.instantiate(des.EDE), + 'des-ede': des.EDE, + 'des-cbc': des.CBC.instantiate(des.DES), + 'des-ecb': des.DES +} +modes.des = modes['des-cbc'] +modes.des3 = modes['des-ede3-cbc'] +module.exports = DES +inherits(DES, CipherBase) +function DES (opts) { + CipherBase.call(this) + var modeName = opts.mode.toLowerCase() + var mode = modes[modeName] + var type + if (opts.decrypt) { + type = 'decrypt' + } else { + type = 'encrypt' + } + var key = opts.key + if (!Buffer.isBuffer(key)) { + key = Buffer.from(key) + } + if (modeName === 'des-ede' || modeName === 'des-ede-cbc') { + key = Buffer.concat([key, key.slice(0, 8)]) + } + var iv = opts.iv + if (!Buffer.isBuffer(iv)) { + iv = Buffer.from(iv) + } + this._des = mode.create({ + key: key, + iv: iv, + type: type + }) +} +DES.prototype._update = function (data) { + return Buffer.from(this._des.update(data)) +} +DES.prototype._final = function () { + return Buffer.from(this._des.final()) +} + +},{"cipher-base":155,"des.js":245,"inherits":396,"safe-buffer":742}],130:[function(require,module,exports){ +exports['des-ecb'] = { + key: 8, + iv: 0 +} +exports['des-cbc'] = exports.des = { + key: 8, + iv: 8 +} +exports['des-ede3-cbc'] = exports.des3 = { + key: 24, + iv: 8 +} +exports['des-ede3'] = { + key: 24, + iv: 0 +} +exports['des-ede-cbc'] = { + key: 16, + iv: 8 +} +exports['des-ede'] = { + key: 16, + iv: 0 +} + +},{}],131:[function(require,module,exports){ +(function (Buffer){ +var bn = require('bn.js'); +var randomBytes = require('randombytes'); +module.exports = crt; +function blind(priv) { + var r = getr(priv); + var blinder = r.toRed(bn.mont(priv.modulus)) + .redPow(new bn(priv.publicExponent)).fromRed(); + return { + blinder: blinder, + unblinder:r.invm(priv.modulus) + }; +} +function crt(msg, priv) { + var blinds = blind(priv); + var len = priv.modulus.byteLength(); + var mod = bn.mont(priv.modulus); + var blinded = new bn(msg).mul(blinds.blinder).umod(priv.modulus); + var c1 = blinded.toRed(bn.mont(priv.prime1)); + var c2 = blinded.toRed(bn.mont(priv.prime2)); + var qinv = priv.coefficient; + var p = priv.prime1; + var q = priv.prime2; + var m1 = c1.redPow(priv.exponent1); + var m2 = c2.redPow(priv.exponent2); + m1 = m1.fromRed(); + m2 = m2.fromRed(); + var h = m1.isub(m2).imul(qinv).umod(p); + h.imul(q); + m2.iadd(h); + return new Buffer(m2.imul(blinds.unblinder).umod(priv.modulus).toArray(false, len)); +} +crt.getr = getr; +function getr(priv) { + var len = priv.modulus.byteLength(); + var r = new bn(randomBytes(len)); + while (r.cmp(priv.modulus) >= 0 || !r.umod(priv.prime1) || !r.umod(priv.prime2)) { + r = new bn(randomBytes(len)); + } + return r; +} + +}).call(this,require("buffer").Buffer) +},{"bn.js":108,"buffer":146,"randombytes":724}],132:[function(require,module,exports){ +module.exports = require('./browser/algorithms.json') + +},{"./browser/algorithms.json":133}],133:[function(require,module,exports){ +module.exports={ + "sha224WithRSAEncryption": { + "sign": "rsa", + "hash": "sha224", + "id": "302d300d06096086480165030402040500041c" + }, + "RSA-SHA224": { + "sign": "ecdsa/rsa", + "hash": "sha224", + "id": "302d300d06096086480165030402040500041c" + }, + "sha256WithRSAEncryption": { + "sign": "rsa", + "hash": "sha256", + "id": "3031300d060960864801650304020105000420" + }, + "RSA-SHA256": { + "sign": "ecdsa/rsa", + "hash": "sha256", + "id": "3031300d060960864801650304020105000420" + }, + "sha384WithRSAEncryption": { + "sign": "rsa", + "hash": "sha384", + "id": "3041300d060960864801650304020205000430" + }, + "RSA-SHA384": { + "sign": "ecdsa/rsa", + "hash": "sha384", + "id": "3041300d060960864801650304020205000430" + }, + "sha512WithRSAEncryption": { + "sign": "rsa", + "hash": "sha512", + "id": "3051300d060960864801650304020305000440" + }, + "RSA-SHA512": { + "sign": "ecdsa/rsa", + "hash": "sha512", + "id": "3051300d060960864801650304020305000440" + }, + "RSA-SHA1": { + "sign": "rsa", + "hash": "sha1", + "id": "3021300906052b0e03021a05000414" + }, + "ecdsa-with-SHA1": { + "sign": "ecdsa", + "hash": "sha1", + "id": "" + }, + "sha256": { + "sign": "ecdsa", + "hash": "sha256", + "id": "" + }, + "sha224": { + "sign": "ecdsa", + "hash": "sha224", + "id": "" + }, + "sha384": { + "sign": "ecdsa", + "hash": "sha384", + "id": "" + }, + "sha512": { + "sign": "ecdsa", + "hash": "sha512", + "id": "" + }, + "DSA-SHA": { + "sign": "dsa", + "hash": "sha1", + "id": "" + }, + "DSA-SHA1": { + "sign": "dsa", + "hash": "sha1", + "id": "" + }, + "DSA": { + "sign": "dsa", + "hash": "sha1", + "id": "" + }, + "DSA-WITH-SHA224": { + "sign": "dsa", + "hash": "sha224", + "id": "" + }, + "DSA-SHA224": { + "sign": "dsa", + "hash": "sha224", + "id": "" + }, + "DSA-WITH-SHA256": { + "sign": "dsa", + "hash": "sha256", + "id": "" + }, + "DSA-SHA256": { + "sign": "dsa", + "hash": "sha256", + "id": "" + }, + "DSA-WITH-SHA384": { + "sign": "dsa", + "hash": "sha384", + "id": "" + }, + "DSA-SHA384": { + "sign": "dsa", + "hash": "sha384", + "id": "" + }, + "DSA-WITH-SHA512": { + "sign": "dsa", + "hash": "sha512", + "id": "" + }, + "DSA-SHA512": { + "sign": "dsa", + "hash": "sha512", + "id": "" + }, + "DSA-RIPEMD160": { + "sign": "dsa", + "hash": "rmd160", + "id": "" + }, + "ripemd160WithRSA": { + "sign": "rsa", + "hash": "rmd160", + "id": "3021300906052b2403020105000414" + }, + "RSA-RIPEMD160": { + "sign": "rsa", + "hash": "rmd160", + "id": "3021300906052b2403020105000414" + }, + "md5WithRSAEncryption": { + "sign": "rsa", + "hash": "md5", + "id": "3020300c06082a864886f70d020505000410" + }, + "RSA-MD5": { + "sign": "rsa", + "hash": "md5", + "id": "3020300c06082a864886f70d020505000410" + } +} + +},{}],134:[function(require,module,exports){ +module.exports={ + "1.3.132.0.10": "secp256k1", + "1.3.132.0.33": "p224", + "1.2.840.10045.3.1.1": "p192", + "1.2.840.10045.3.1.7": "p256", + "1.3.132.0.34": "p384", + "1.3.132.0.35": "p521" +} + +},{}],135:[function(require,module,exports){ +(function (Buffer){ +var createHash = require('create-hash') +var stream = require('stream') +var inherits = require('inherits') +var sign = require('./sign') +var verify = require('./verify') + +var algorithms = require('./algorithms.json') +Object.keys(algorithms).forEach(function (key) { + algorithms[key].id = new Buffer(algorithms[key].id, 'hex') + algorithms[key.toLowerCase()] = algorithms[key] +}) + +function Sign (algorithm) { + stream.Writable.call(this) + + var data = algorithms[algorithm] + if (!data) throw new Error('Unknown message digest') + + this._hashType = data.hash + this._hash = createHash(data.hash) + this._tag = data.id + this._signType = data.sign +} +inherits(Sign, stream.Writable) + +Sign.prototype._write = function _write (data, _, done) { + this._hash.update(data) + done() +} + +Sign.prototype.update = function update (data, enc) { + if (typeof data === 'string') data = new Buffer(data, enc) + + this._hash.update(data) + return this +} + +Sign.prototype.sign = function signMethod (key, enc) { + this.end() + var hash = this._hash.digest() + var sig = sign(hash, key, this._hashType, this._signType, this._tag) + + return enc ? sig.toString(enc) : sig +} + +function Verify (algorithm) { + stream.Writable.call(this) + + var data = algorithms[algorithm] + if (!data) throw new Error('Unknown message digest') + + this._hash = createHash(data.hash) + this._tag = data.id + this._signType = data.sign +} +inherits(Verify, stream.Writable) + +Verify.prototype._write = function _write (data, _, done) { + this._hash.update(data) + done() +} + +Verify.prototype.update = function update (data, enc) { + if (typeof data === 'string') data = new Buffer(data, enc) + + this._hash.update(data) + return this +} + +Verify.prototype.verify = function verifyMethod (key, sig, enc) { + if (typeof sig === 'string') sig = new Buffer(sig, enc) + + this.end() + var hash = this._hash.digest() + return verify(sig, hash, key, this._signType, this._tag) +} + +function createSign (algorithm) { + return new Sign(algorithm) +} + +function createVerify (algorithm) { + return new Verify(algorithm) +} + +module.exports = { + Sign: createSign, + Verify: createVerify, + createSign: createSign, + createVerify: createVerify +} + +}).call(this,require("buffer").Buffer) +},{"./algorithms.json":133,"./sign":136,"./verify":137,"buffer":146,"create-hash":239,"inherits":396,"stream":808}],136:[function(require,module,exports){ +(function (Buffer){ +// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js +var createHmac = require('create-hmac') +var crt = require('browserify-rsa') +var EC = require('elliptic').ec +var BN = require('bn.js') +var parseKeys = require('parse-asn1') +var curves = require('./curves.json') + +function sign (hash, key, hashType, signType, tag) { + var priv = parseKeys(key) + if (priv.curve) { + // rsa keys can be interpreted as ecdsa ones in openssl + if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type') + return ecSign(hash, priv) + } else if (priv.type === 'dsa') { + if (signType !== 'dsa') throw new Error('wrong private key type') + return dsaSign(hash, priv, hashType) + } else { + if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type') + } + hash = Buffer.concat([tag, hash]) + var len = priv.modulus.byteLength() + var pad = [ 0, 1 ] + while (hash.length + pad.length + 1 < len) pad.push(0xff) + pad.push(0x00) + var i = -1 + while (++i < hash.length) pad.push(hash[i]) + + var out = crt(pad, priv) + return out +} + +function ecSign (hash, priv) { + var curveId = curves[priv.curve.join('.')] + if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.')) + + var curve = new EC(curveId) + var key = curve.keyFromPrivate(priv.privateKey) + var out = key.sign(hash) + + return new Buffer(out.toDER()) +} + +function dsaSign (hash, priv, algo) { + var x = priv.params.priv_key + var p = priv.params.p + var q = priv.params.q + var g = priv.params.g + var r = new BN(0) + var k + var H = bits2int(hash, q).mod(q) + var s = false + var kv = getKey(x, q, hash, algo) + while (s === false) { + k = makeKey(q, kv, algo) + r = makeR(g, k, p, q) + s = k.invm(q).imul(H.add(x.mul(r))).mod(q) + if (s.cmpn(0) === 0) { + s = false + r = new BN(0) + } + } + return toDER(r, s) +} + +function toDER (r, s) { + r = r.toArray() + s = s.toArray() + + // Pad values + if (r[0] & 0x80) r = [ 0 ].concat(r) + if (s[0] & 0x80) s = [ 0 ].concat(s) + + var total = r.length + s.length + 4 + var res = [ 0x30, total, 0x02, r.length ] + res = res.concat(r, [ 0x02, s.length ], s) + return new Buffer(res) +} + +function getKey (x, q, hash, algo) { + x = new Buffer(x.toArray()) + if (x.length < q.byteLength()) { + var zeros = new Buffer(q.byteLength() - x.length) + zeros.fill(0) + x = Buffer.concat([ zeros, x ]) + } + var hlen = hash.length + var hbits = bits2octets(hash, q) + var v = new Buffer(hlen) + v.fill(1) + var k = new Buffer(hlen) + k.fill(0) + k = createHmac(algo, k).update(v).update(new Buffer([ 0 ])).update(x).update(hbits).digest() + v = createHmac(algo, k).update(v).digest() + k = createHmac(algo, k).update(v).update(new Buffer([ 1 ])).update(x).update(hbits).digest() + v = createHmac(algo, k).update(v).digest() + return { k: k, v: v } +} + +function bits2int (obits, q) { + var bits = new BN(obits) + var shift = (obits.length << 3) - q.bitLength() + if (shift > 0) bits.ishrn(shift) + return bits +} + +function bits2octets (bits, q) { + bits = bits2int(bits, q) + bits = bits.mod(q) + var out = new Buffer(bits.toArray()) + if (out.length < q.byteLength()) { + var zeros = new Buffer(q.byteLength() - out.length) + zeros.fill(0) + out = Buffer.concat([ zeros, out ]) + } + return out +} + +function makeKey (q, kv, algo) { + var t + var k + + do { + t = new Buffer(0) + + while (t.length * 8 < q.bitLength()) { + kv.v = createHmac(algo, kv.k).update(kv.v).digest() + t = Buffer.concat([ t, kv.v ]) + } + + k = bits2int(t, q) + kv.k = createHmac(algo, kv.k).update(kv.v).update(new Buffer([ 0 ])).digest() + kv.v = createHmac(algo, kv.k).update(kv.v).digest() + } while (k.cmp(q) !== -1) + + return k +} + +function makeR (g, k, p, q) { + return g.toRed(BN.mont(p)).redPow(k).fromRed().mod(q) +} + +module.exports = sign +module.exports.getKey = getKey +module.exports.makeKey = makeKey + +}).call(this,require("buffer").Buffer) +},{"./curves.json":134,"bn.js":108,"browserify-rsa":131,"buffer":146,"create-hmac":241,"elliptic":317,"parse-asn1":670}],137:[function(require,module,exports){ +(function (Buffer){ +// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js +var BN = require('bn.js') +var EC = require('elliptic').ec +var parseKeys = require('parse-asn1') +var curves = require('./curves.json') + +function verify (sig, hash, key, signType, tag) { + var pub = parseKeys(key) + if (pub.type === 'ec') { + // rsa keys can be interpreted as ecdsa ones in openssl + if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type') + return ecVerify(sig, hash, pub) + } else if (pub.type === 'dsa') { + if (signType !== 'dsa') throw new Error('wrong public key type') + return dsaVerify(sig, hash, pub) + } else { + if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type') + } + hash = Buffer.concat([tag, hash]) + var len = pub.modulus.byteLength() + var pad = [ 1 ] + var padNum = 0 + while (hash.length + pad.length + 2 < len) { + pad.push(0xff) + padNum++ + } + pad.push(0x00) + var i = -1 + while (++i < hash.length) { + pad.push(hash[i]) + } + pad = new Buffer(pad) + var red = BN.mont(pub.modulus) + sig = new BN(sig).toRed(red) + + sig = sig.redPow(new BN(pub.publicExponent)) + sig = new Buffer(sig.fromRed().toArray()) + var out = padNum < 8 ? 1 : 0 + len = Math.min(sig.length, pad.length) + if (sig.length !== pad.length) out = 1 + + i = -1 + while (++i < len) out |= sig[i] ^ pad[i] + return out === 0 +} + +function ecVerify (sig, hash, pub) { + var curveId = curves[pub.data.algorithm.curve.join('.')] + if (!curveId) throw new Error('unknown curve ' + pub.data.algorithm.curve.join('.')) + + var curve = new EC(curveId) + var pubkey = pub.data.subjectPrivateKey.data + + return curve.verify(hash, sig, pubkey) +} + +function dsaVerify (sig, hash, pub) { + var p = pub.data.p + var q = pub.data.q + var g = pub.data.g + var y = pub.data.pub_key + var unpacked = parseKeys.signature.decode(sig, 'der') + var s = unpacked.s + var r = unpacked.r + checkValue(s, q) + checkValue(r, q) + var montp = BN.mont(p) + var w = s.invm(q) + var v = g.toRed(montp) + .redPow(new BN(hash).mul(w).mod(q)) + .fromRed() + .mul(y.toRed(montp).redPow(r.mul(w).mod(q)).fromRed()) + .mod(p) + .mod(q) + return v.cmp(r) === 0 +} + +function checkValue (b, q) { + if (b.cmpn(0) <= 0) throw new Error('invalid sig') + if (b.cmp(q) >= q) throw new Error('invalid sig') +} + +module.exports = verify + +}).call(this,require("buffer").Buffer) +},{"./curves.json":134,"bn.js":108,"buffer":146,"elliptic":317,"parse-asn1":670}],138:[function(require,module,exports){ +var basex = require('base-x') +var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' + +module.exports = basex(ALPHABET) + +},{"base-x":54}],139:[function(require,module,exports){ +'use strict' + +var base58 = require('bs58') +var Buffer = require('safe-buffer').Buffer + +module.exports = function (checksumFn) { + // Encode a buffer as a base58-check encoded string + function encode (payload) { + var checksum = checksumFn(payload) + + return base58.encode(Buffer.concat([ + payload, + checksum + ], payload.length + 4)) + } + + function decodeRaw (buffer) { + var payload = buffer.slice(0, -4) + var checksum = buffer.slice(-4) + var newChecksum = checksumFn(payload) + + if (checksum[0] ^ newChecksum[0] | + checksum[1] ^ newChecksum[1] | + checksum[2] ^ newChecksum[2] | + checksum[3] ^ newChecksum[3]) return + + return payload + } + + // Decode a base58-check encoded string to a buffer, no result if checksum is wrong + function decodeUnsafe (string) { + var buffer = base58.decodeUnsafe(string) + if (!buffer) return + + return decodeRaw(buffer) + } + + function decode (string) { + var buffer = base58.decode(string) + var payload = decodeRaw(buffer, checksumFn) + if (!payload) throw new Error('Invalid checksum') + return payload + } + + return { + encode: encode, + decode: decode, + decodeUnsafe: decodeUnsafe + } +} + +},{"bs58":138,"safe-buffer":742}],140:[function(require,module,exports){ +'use strict' + +var createHash = require('create-hash') +var bs58checkBase = require('./base') + +// SHA256(SHA256(buffer)) +function sha256x2 (buffer) { + var tmp = createHash('sha256').update(buffer).digest() + return createHash('sha256').update(tmp).digest() +} + +module.exports = bs58checkBase(sha256x2) + +},{"./base":139,"create-hash":239}],141:[function(require,module,exports){ +arguments[4][139][0].apply(exports,arguments) +},{"bs58":138,"dup":139,"safe-buffer":742}],142:[function(require,module,exports){ +(function (Buffer){ +'use strict' + +var createHash = require('create-hash') +var bs58grscheckBase = require('./base') +var groestlhash = require('groestl-hash-js') + +// GROESTL512(GROESTL512(buffer)) +function groestl (buffer) { + return Buffer(groestlhash.groestl_2(buffer, 1, 1)) +} + +module.exports = bs58grscheckBase(groestl) + +}).call(this,require("buffer").Buffer) +},{"./base":141,"buffer":146,"create-hash":239,"groestl-hash-js":339}],143:[function(require,module,exports){ +module.exports = function(a, b) { + if (typeof a.compare === 'function') return a.compare(b) + if (a === b) return 0 + + var x = a.length + var y = b.length + + var i = 0 + var len = Math.min(x, y) + while (i < len) { + if (a[i] !== b[i]) break + + ++i + } + + if (i !== len) { + x = a[i] + y = b[i] + } + + if (x < y) return -1 + if (y < x) return 1 + return 0 +} + + +},{}],144:[function(require,module,exports){ +(function (Buffer){ +module.exports = function xor (a, b) { + var length = Math.min(a.length, b.length) + var buffer = new Buffer(length) + + for (var i = 0; i < length; ++i) { + buffer[i] = a[i] ^ b[i] + } + + return buffer +} + +}).call(this,require("buffer").Buffer) +},{"buffer":146}],145:[function(require,module,exports){ +module.exports = function xorInplace (a, b) { + var length = Math.min(a.length, b.length) + + for (var i = 0; i < length; ++i) { + a[i] = a[i] ^ b[i] + } + + return a.slice(0, length) +} + +},{}],146:[function(require,module,exports){ +(function (Buffer){ +/*! + * The buffer module from node.js, for the browser. + * + * @author Feross Aboukhadijeh + * @license MIT + */ +/* eslint-disable no-proto */ + +'use strict' + +var base64 = require('base64-js') +var ieee754 = require('ieee754') +var customInspectSymbol = + (typeof Symbol === 'function' && typeof Symbol.for === 'function') + ? Symbol.for('nodejs.util.inspect.custom') + : null + +exports.Buffer = Buffer +exports.SlowBuffer = SlowBuffer +exports.INSPECT_MAX_BYTES = 50 + +var K_MAX_LENGTH = 0x7fffffff +exports.kMaxLength = K_MAX_LENGTH + +/** + * If `Buffer.TYPED_ARRAY_SUPPORT`: + * === true Use Uint8Array implementation (fastest) + * === false Print warning and recommend using `buffer` v4.x which has an Object + * implementation (most compatible, even IE6) + * + * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, + * Opera 11.6+, iOS 4.2+. + * + * We report that the browser does not support typed arrays if the are not subclassable + * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` + * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support + * for __proto__ and has a buggy typed array implementation. + */ +Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() + +if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && + typeof console.error === 'function') { + console.error( + 'This browser lacks typed array (Uint8Array) support which is required by ' + + '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' + ) +} + +function typedArraySupport () { + // Can typed array instances can be augmented? + try { + var arr = new Uint8Array(1) + var proto = { foo: function () { return 42 } } + Object.setPrototypeOf(proto, Uint8Array.prototype) + Object.setPrototypeOf(arr, proto) + return arr.foo() === 42 + } catch (e) { + return false + } +} + +Object.defineProperty(Buffer.prototype, 'parent', { + enumerable: true, + get: function () { + if (!Buffer.isBuffer(this)) return undefined + return this.buffer + } +}) + +Object.defineProperty(Buffer.prototype, 'offset', { + enumerable: true, + get: function () { + if (!Buffer.isBuffer(this)) return undefined + return this.byteOffset + } +}) + +function createBuffer (length) { + if (length > K_MAX_LENGTH) { + throw new RangeError('The value "' + length + '" is invalid for option "size"') + } + // Return an augmented `Uint8Array` instance + var buf = new Uint8Array(length) + Object.setPrototypeOf(buf, Buffer.prototype) + return buf +} + +/** + * The Buffer constructor returns instances of `Uint8Array` that have their + * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of + * `Uint8Array`, so the returned instances will have all the node `Buffer` methods + * and the `Uint8Array` methods. Square bracket notation works as expected -- it + * returns a single octet. + * + * The `Uint8Array` prototype remains unmodified. + */ + +function Buffer (arg, encodingOrOffset, length) { + // Common case. + if (typeof arg === 'number') { + if (typeof encodingOrOffset === 'string') { + throw new TypeError( + 'The "string" argument must be of type string. Received type number' + ) + } + return allocUnsafe(arg) + } + return from(arg, encodingOrOffset, length) +} + +// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 +if (typeof Symbol !== 'undefined' && Symbol.species != null && + Buffer[Symbol.species] === Buffer) { + Object.defineProperty(Buffer, Symbol.species, { + value: null, + configurable: true, + enumerable: false, + writable: false + }) +} + +Buffer.poolSize = 8192 // not used by this implementation + +function from (value, encodingOrOffset, length) { + if (typeof value === 'string') { + return fromString(value, encodingOrOffset) + } + + if (ArrayBuffer.isView(value)) { + return fromArrayLike(value) + } + + if (value == null) { + throw new TypeError( + 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + + 'or Array-like Object. Received type ' + (typeof value) + ) + } + + if (isInstance(value, ArrayBuffer) || + (value && isInstance(value.buffer, ArrayBuffer))) { + return fromArrayBuffer(value, encodingOrOffset, length) + } + + if (typeof value === 'number') { + throw new TypeError( + 'The "value" argument must not be of type number. Received type number' + ) + } + + var valueOf = value.valueOf && value.valueOf() + if (valueOf != null && valueOf !== value) { + return Buffer.from(valueOf, encodingOrOffset, length) + } + + var b = fromObject(value) + if (b) return b + + if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null && + typeof value[Symbol.toPrimitive] === 'function') { + return Buffer.from( + value[Symbol.toPrimitive]('string'), encodingOrOffset, length + ) + } + + throw new TypeError( + 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + + 'or Array-like Object. Received type ' + (typeof value) + ) +} + +/** + * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError + * if value is a number. + * Buffer.from(str[, encoding]) + * Buffer.from(array) + * Buffer.from(buffer) + * Buffer.from(arrayBuffer[, byteOffset[, length]]) + **/ +Buffer.from = function (value, encodingOrOffset, length) { + return from(value, encodingOrOffset, length) +} + +// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: +// https://github.com/feross/buffer/pull/148 +Object.setPrototypeOf(Buffer.prototype, Uint8Array.prototype) +Object.setPrototypeOf(Buffer, Uint8Array) + +function assertSize (size) { + if (typeof size !== 'number') { + throw new TypeError('"size" argument must be of type number') + } else if (size < 0) { + throw new RangeError('The value "' + size + '" is invalid for option "size"') + } +} + +function alloc (size, fill, encoding) { + assertSize(size) + if (size <= 0) { + return createBuffer(size) + } + if (fill !== undefined) { + // Only pay attention to encoding if it's a string. This + // prevents accidentally sending in a number that would + // be interpretted as a start offset. + return typeof encoding === 'string' + ? createBuffer(size).fill(fill, encoding) + : createBuffer(size).fill(fill) + } + return createBuffer(size) +} + +/** + * Creates a new filled Buffer instance. + * alloc(size[, fill[, encoding]]) + **/ +Buffer.alloc = function (size, fill, encoding) { + return alloc(size, fill, encoding) +} + +function allocUnsafe (size) { + assertSize(size) + return createBuffer(size < 0 ? 0 : checked(size) | 0) +} + +/** + * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. + * */ +Buffer.allocUnsafe = function (size) { + return allocUnsafe(size) +} +/** + * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. + */ +Buffer.allocUnsafeSlow = function (size) { + return allocUnsafe(size) +} + +function fromString (string, encoding) { + if (typeof encoding !== 'string' || encoding === '') { + encoding = 'utf8' + } + + if (!Buffer.isEncoding(encoding)) { + throw new TypeError('Unknown encoding: ' + encoding) + } + + var length = byteLength(string, encoding) | 0 + var buf = createBuffer(length) + + var actual = buf.write(string, encoding) + + if (actual !== length) { + // Writing a hex string, for example, that contains invalid characters will + // cause everything after the first invalid character to be ignored. (e.g. + // 'abxxcd' will be treated as 'ab') + buf = buf.slice(0, actual) + } + + return buf +} + +function fromArrayLike (array) { + var length = array.length < 0 ? 0 : checked(array.length) | 0 + var buf = createBuffer(length) + for (var i = 0; i < length; i += 1) { + buf[i] = array[i] & 255 + } + return buf +} + +function fromArrayBuffer (array, byteOffset, length) { + if (byteOffset < 0 || array.byteLength < byteOffset) { + throw new RangeError('"offset" is outside of buffer bounds') + } + + if (array.byteLength < byteOffset + (length || 0)) { + throw new RangeError('"length" is outside of buffer bounds') + } + + var buf + if (byteOffset === undefined && length === undefined) { + buf = new Uint8Array(array) + } else if (length === undefined) { + buf = new Uint8Array(array, byteOffset) + } else { + buf = new Uint8Array(array, byteOffset, length) + } + + // Return an augmented `Uint8Array` instance + Object.setPrototypeOf(buf, Buffer.prototype) + + return buf +} + +function fromObject (obj) { + if (Buffer.isBuffer(obj)) { + var len = checked(obj.length) | 0 + var buf = createBuffer(len) + + if (buf.length === 0) { + return buf + } + + obj.copy(buf, 0, 0, len) + return buf + } + + if (obj.length !== undefined) { + if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { + return createBuffer(0) + } + return fromArrayLike(obj) + } + + if (obj.type === 'Buffer' && Array.isArray(obj.data)) { + return fromArrayLike(obj.data) + } +} + +function checked (length) { + // Note: cannot use `length < K_MAX_LENGTH` here because that fails when + // length is NaN (which is otherwise coerced to zero.) + if (length >= K_MAX_LENGTH) { + throw new RangeError('Attempt to allocate Buffer larger than maximum ' + + 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') + } + return length | 0 +} + +function SlowBuffer (length) { + if (+length != length) { // eslint-disable-line eqeqeq + length = 0 + } + return Buffer.alloc(+length) +} + +Buffer.isBuffer = function isBuffer (b) { + return b != null && b._isBuffer === true && + b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false +} + +Buffer.compare = function compare (a, b) { + if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength) + if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength) + if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { + throw new TypeError( + 'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array' + ) + } + + if (a === b) return 0 + + var x = a.length + var y = b.length + + for (var i = 0, len = Math.min(x, y); i < len; ++i) { + if (a[i] !== b[i]) { + x = a[i] + y = b[i] + break + } + } + + if (x < y) return -1 + if (y < x) return 1 + return 0 +} + +Buffer.isEncoding = function isEncoding (encoding) { + switch (String(encoding).toLowerCase()) { + case 'hex': + case 'utf8': + case 'utf-8': + case 'ascii': + case 'latin1': + case 'binary': + case 'base64': + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return true + default: + return false + } +} + +Buffer.concat = function concat (list, length) { + if (!Array.isArray(list)) { + throw new TypeError('"list" argument must be an Array of Buffers') + } + + if (list.length === 0) { + return Buffer.alloc(0) + } + + var i + if (length === undefined) { + length = 0 + for (i = 0; i < list.length; ++i) { + length += list[i].length + } + } + + var buffer = Buffer.allocUnsafe(length) + var pos = 0 + for (i = 0; i < list.length; ++i) { + var buf = list[i] + if (isInstance(buf, Uint8Array)) { + buf = Buffer.from(buf) + } + if (!Buffer.isBuffer(buf)) { + throw new TypeError('"list" argument must be an Array of Buffers') + } + buf.copy(buffer, pos) + pos += buf.length + } + return buffer +} + +function byteLength (string, encoding) { + if (Buffer.isBuffer(string)) { + return string.length + } + if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) { + return string.byteLength + } + if (typeof string !== 'string') { + throw new TypeError( + 'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' + + 'Received type ' + typeof string + ) + } + + var len = string.length + var mustMatch = (arguments.length > 2 && arguments[2] === true) + if (!mustMatch && len === 0) return 0 + + // Use a for loop to avoid recursion + var loweredCase = false + for (;;) { + switch (encoding) { + case 'ascii': + case 'latin1': + case 'binary': + return len + case 'utf8': + case 'utf-8': + return utf8ToBytes(string).length + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return len * 2 + case 'hex': + return len >>> 1 + case 'base64': + return base64ToBytes(string).length + default: + if (loweredCase) { + return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8 + } + encoding = ('' + encoding).toLowerCase() + loweredCase = true + } + } +} +Buffer.byteLength = byteLength + +function slowToString (encoding, start, end) { + var loweredCase = false + + // No need to verify that "this.length <= MAX_UINT32" since it's a read-only + // property of a typed array. + + // This behaves neither like String nor Uint8Array in that we set start/end + // to their upper/lower bounds if the value passed is out of range. + // undefined is handled specially as per ECMA-262 6th Edition, + // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. + if (start === undefined || start < 0) { + start = 0 + } + // Return early if start > this.length. Done here to prevent potential uint32 + // coercion fail below. + if (start > this.length) { + return '' + } + + if (end === undefined || end > this.length) { + end = this.length + } + + if (end <= 0) { + return '' + } + + // Force coersion to uint32. This will also coerce falsey/NaN values to 0. + end >>>= 0 + start >>>= 0 + + if (end <= start) { + return '' + } + + if (!encoding) encoding = 'utf8' + + while (true) { + switch (encoding) { + case 'hex': + return hexSlice(this, start, end) + + case 'utf8': + case 'utf-8': + return utf8Slice(this, start, end) + + case 'ascii': + return asciiSlice(this, start, end) + + case 'latin1': + case 'binary': + return latin1Slice(this, start, end) + + case 'base64': + return base64Slice(this, start, end) + + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return utf16leSlice(this, start, end) + + default: + if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) + encoding = (encoding + '').toLowerCase() + loweredCase = true + } + } +} + +// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) +// to detect a Buffer instance. It's not possible to use `instanceof Buffer` +// reliably in a browserify context because there could be multiple different +// copies of the 'buffer' package in use. This method works even for Buffer +// instances that were created from another copy of the `buffer` package. +// See: https://github.com/feross/buffer/issues/154 +Buffer.prototype._isBuffer = true + +function swap (b, n, m) { + var i = b[n] + b[n] = b[m] + b[m] = i +} + +Buffer.prototype.swap16 = function swap16 () { + var len = this.length + if (len % 2 !== 0) { + throw new RangeError('Buffer size must be a multiple of 16-bits') + } + for (var i = 0; i < len; i += 2) { + swap(this, i, i + 1) + } + return this +} + +Buffer.prototype.swap32 = function swap32 () { + var len = this.length + if (len % 4 !== 0) { + throw new RangeError('Buffer size must be a multiple of 32-bits') + } + for (var i = 0; i < len; i += 4) { + swap(this, i, i + 3) + swap(this, i + 1, i + 2) + } + return this +} + +Buffer.prototype.swap64 = function swap64 () { + var len = this.length + if (len % 8 !== 0) { + throw new RangeError('Buffer size must be a multiple of 64-bits') + } + for (var i = 0; i < len; i += 8) { + swap(this, i, i + 7) + swap(this, i + 1, i + 6) + swap(this, i + 2, i + 5) + swap(this, i + 3, i + 4) + } + return this +} + +Buffer.prototype.toString = function toString () { + var length = this.length + if (length === 0) return '' + if (arguments.length === 0) return utf8Slice(this, 0, length) + return slowToString.apply(this, arguments) +} + +Buffer.prototype.toLocaleString = Buffer.prototype.toString + +Buffer.prototype.equals = function equals (b) { + if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') + if (this === b) return true + return Buffer.compare(this, b) === 0 +} + +Buffer.prototype.inspect = function inspect () { + var str = '' + var max = exports.INSPECT_MAX_BYTES + str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim() + if (this.length > max) str += ' ... ' + return '' +} +if (customInspectSymbol) { + Buffer.prototype[customInspectSymbol] = Buffer.prototype.inspect +} + +Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { + if (isInstance(target, Uint8Array)) { + target = Buffer.from(target, target.offset, target.byteLength) + } + if (!Buffer.isBuffer(target)) { + throw new TypeError( + 'The "target" argument must be one of type Buffer or Uint8Array. ' + + 'Received type ' + (typeof target) + ) + } + + if (start === undefined) { + start = 0 + } + if (end === undefined) { + end = target ? target.length : 0 + } + if (thisStart === undefined) { + thisStart = 0 + } + if (thisEnd === undefined) { + thisEnd = this.length + } + + if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { + throw new RangeError('out of range index') + } + + if (thisStart >= thisEnd && start >= end) { + return 0 + } + if (thisStart >= thisEnd) { + return -1 + } + if (start >= end) { + return 1 + } + + start >>>= 0 + end >>>= 0 + thisStart >>>= 0 + thisEnd >>>= 0 + + if (this === target) return 0 + + var x = thisEnd - thisStart + var y = end - start + var len = Math.min(x, y) + + var thisCopy = this.slice(thisStart, thisEnd) + var targetCopy = target.slice(start, end) + + for (var i = 0; i < len; ++i) { + if (thisCopy[i] !== targetCopy[i]) { + x = thisCopy[i] + y = targetCopy[i] + break + } + } + + if (x < y) return -1 + if (y < x) return 1 + return 0 +} + +// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, +// OR the last index of `val` in `buffer` at offset <= `byteOffset`. +// +// Arguments: +// - buffer - a Buffer to search +// - val - a string, Buffer, or number +// - byteOffset - an index into `buffer`; will be clamped to an int32 +// - encoding - an optional encoding, relevant is val is a string +// - dir - true for indexOf, false for lastIndexOf +function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { + // Empty buffer means no match + if (buffer.length === 0) return -1 + + // Normalize byteOffset + if (typeof byteOffset === 'string') { + encoding = byteOffset + byteOffset = 0 + } else if (byteOffset > 0x7fffffff) { + byteOffset = 0x7fffffff + } else if (byteOffset < -0x80000000) { + byteOffset = -0x80000000 + } + byteOffset = +byteOffset // Coerce to Number. + if (numberIsNaN(byteOffset)) { + // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer + byteOffset = dir ? 0 : (buffer.length - 1) + } + + // Normalize byteOffset: negative offsets start from the end of the buffer + if (byteOffset < 0) byteOffset = buffer.length + byteOffset + if (byteOffset >= buffer.length) { + if (dir) return -1 + else byteOffset = buffer.length - 1 + } else if (byteOffset < 0) { + if (dir) byteOffset = 0 + else return -1 + } + + // Normalize val + if (typeof val === 'string') { + val = Buffer.from(val, encoding) + } + + // Finally, search either indexOf (if dir is true) or lastIndexOf + if (Buffer.isBuffer(val)) { + // Special case: looking for empty string/buffer always fails + if (val.length === 0) { + return -1 + } + return arrayIndexOf(buffer, val, byteOffset, encoding, dir) + } else if (typeof val === 'number') { + val = val & 0xFF // Search for a byte value [0-255] + if (typeof Uint8Array.prototype.indexOf === 'function') { + if (dir) { + return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) + } else { + return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) + } + } + return arrayIndexOf(buffer, [val], byteOffset, encoding, dir) + } + + throw new TypeError('val must be string, number or Buffer') +} + +function arrayIndexOf (arr, val, byteOffset, encoding, dir) { + var indexSize = 1 + var arrLength = arr.length + var valLength = val.length + + if (encoding !== undefined) { + encoding = String(encoding).toLowerCase() + if (encoding === 'ucs2' || encoding === 'ucs-2' || + encoding === 'utf16le' || encoding === 'utf-16le') { + if (arr.length < 2 || val.length < 2) { + return -1 + } + indexSize = 2 + arrLength /= 2 + valLength /= 2 + byteOffset /= 2 + } + } + + function read (buf, i) { + if (indexSize === 1) { + return buf[i] + } else { + return buf.readUInt16BE(i * indexSize) + } + } + + var i + if (dir) { + var foundIndex = -1 + for (i = byteOffset; i < arrLength; i++) { + if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { + if (foundIndex === -1) foundIndex = i + if (i - foundIndex + 1 === valLength) return foundIndex * indexSize + } else { + if (foundIndex !== -1) i -= i - foundIndex + foundIndex = -1 + } + } + } else { + if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength + for (i = byteOffset; i >= 0; i--) { + var found = true + for (var j = 0; j < valLength; j++) { + if (read(arr, i + j) !== read(val, j)) { + found = false + break + } + } + if (found) return i + } + } + + return -1 +} + +Buffer.prototype.includes = function includes (val, byteOffset, encoding) { + return this.indexOf(val, byteOffset, encoding) !== -1 +} + +Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { + return bidirectionalIndexOf(this, val, byteOffset, encoding, true) +} + +Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { + return bidirectionalIndexOf(this, val, byteOffset, encoding, false) +} + +function hexWrite (buf, string, offset, length) { + offset = Number(offset) || 0 + var remaining = buf.length - offset + if (!length) { + length = remaining + } else { + length = Number(length) + if (length > remaining) { + length = remaining + } + } + + var strLen = string.length + + if (length > strLen / 2) { + length = strLen / 2 + } + for (var i = 0; i < length; ++i) { + var parsed = parseInt(string.substr(i * 2, 2), 16) + if (numberIsNaN(parsed)) return i + buf[offset + i] = parsed + } + return i +} + +function utf8Write (buf, string, offset, length) { + return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) +} + +function asciiWrite (buf, string, offset, length) { + return blitBuffer(asciiToBytes(string), buf, offset, length) +} + +function latin1Write (buf, string, offset, length) { + return asciiWrite(buf, string, offset, length) +} + +function base64Write (buf, string, offset, length) { + return blitBuffer(base64ToBytes(string), buf, offset, length) +} + +function ucs2Write (buf, string, offset, length) { + return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) +} + +Buffer.prototype.write = function write (string, offset, length, encoding) { + // Buffer#write(string) + if (offset === undefined) { + encoding = 'utf8' + length = this.length + offset = 0 + // Buffer#write(string, encoding) + } else if (length === undefined && typeof offset === 'string') { + encoding = offset + length = this.length + offset = 0 + // Buffer#write(string, offset[, length][, encoding]) + } else if (isFinite(offset)) { + offset = offset >>> 0 + if (isFinite(length)) { + length = length >>> 0 + if (encoding === undefined) encoding = 'utf8' + } else { + encoding = length + length = undefined + } + } else { + throw new Error( + 'Buffer.write(string, encoding, offset[, length]) is no longer supported' + ) + } + + var remaining = this.length - offset + if (length === undefined || length > remaining) length = remaining + + if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { + throw new RangeError('Attempt to write outside buffer bounds') + } + + if (!encoding) encoding = 'utf8' + + var loweredCase = false + for (;;) { + switch (encoding) { + case 'hex': + return hexWrite(this, string, offset, length) + + case 'utf8': + case 'utf-8': + return utf8Write(this, string, offset, length) + + case 'ascii': + return asciiWrite(this, string, offset, length) + + case 'latin1': + case 'binary': + return latin1Write(this, string, offset, length) + + case 'base64': + // Warning: maxLength not taken into account in base64Write + return base64Write(this, string, offset, length) + + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return ucs2Write(this, string, offset, length) + + default: + if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) + encoding = ('' + encoding).toLowerCase() + loweredCase = true + } + } +} + +Buffer.prototype.toJSON = function toJSON () { + return { + type: 'Buffer', + data: Array.prototype.slice.call(this._arr || this, 0) + } +} + +function base64Slice (buf, start, end) { + if (start === 0 && end === buf.length) { + return base64.fromByteArray(buf) + } else { + return base64.fromByteArray(buf.slice(start, end)) + } +} + +function utf8Slice (buf, start, end) { + end = Math.min(buf.length, end) + var res = [] + + var i = start + while (i < end) { + var firstByte = buf[i] + var codePoint = null + var bytesPerSequence = (firstByte > 0xEF) ? 4 + : (firstByte > 0xDF) ? 3 + : (firstByte > 0xBF) ? 2 + : 1 + + if (i + bytesPerSequence <= end) { + var secondByte, thirdByte, fourthByte, tempCodePoint + + switch (bytesPerSequence) { + case 1: + if (firstByte < 0x80) { + codePoint = firstByte + } + break + case 2: + secondByte = buf[i + 1] + if ((secondByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) + if (tempCodePoint > 0x7F) { + codePoint = tempCodePoint + } + } + break + case 3: + secondByte = buf[i + 1] + thirdByte = buf[i + 2] + if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) + if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { + codePoint = tempCodePoint + } + } + break + case 4: + secondByte = buf[i + 1] + thirdByte = buf[i + 2] + fourthByte = buf[i + 3] + if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) + if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { + codePoint = tempCodePoint + } + } + } + } + + if (codePoint === null) { + // we did not generate a valid codePoint so insert a + // replacement char (U+FFFD) and advance only 1 byte + codePoint = 0xFFFD + bytesPerSequence = 1 + } else if (codePoint > 0xFFFF) { + // encode to utf16 (surrogate pair dance) + codePoint -= 0x10000 + res.push(codePoint >>> 10 & 0x3FF | 0xD800) + codePoint = 0xDC00 | codePoint & 0x3FF + } + + res.push(codePoint) + i += bytesPerSequence + } + + return decodeCodePointsArray(res) +} + +// Based on http://stackoverflow.com/a/22747272/680742, the browser with +// the lowest limit is Chrome, with 0x10000 args. +// We go 1 magnitude less, for safety +var MAX_ARGUMENTS_LENGTH = 0x1000 + +function decodeCodePointsArray (codePoints) { + var len = codePoints.length + if (len <= MAX_ARGUMENTS_LENGTH) { + return String.fromCharCode.apply(String, codePoints) // avoid extra slice() + } + + // Decode in chunks to avoid "call stack size exceeded". + var res = '' + var i = 0 + while (i < len) { + res += String.fromCharCode.apply( + String, + codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) + ) + } + return res +} + +function asciiSlice (buf, start, end) { + var ret = '' + end = Math.min(buf.length, end) + + for (var i = start; i < end; ++i) { + ret += String.fromCharCode(buf[i] & 0x7F) + } + return ret +} + +function latin1Slice (buf, start, end) { + var ret = '' + end = Math.min(buf.length, end) + + for (var i = start; i < end; ++i) { + ret += String.fromCharCode(buf[i]) + } + return ret +} + +function hexSlice (buf, start, end) { + var len = buf.length + + if (!start || start < 0) start = 0 + if (!end || end < 0 || end > len) end = len + + var out = '' + for (var i = start; i < end; ++i) { + out += hexSliceLookupTable[buf[i]] + } + return out +} + +function utf16leSlice (buf, start, end) { + var bytes = buf.slice(start, end) + var res = '' + for (var i = 0; i < bytes.length; i += 2) { + res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) + } + return res +} + +Buffer.prototype.slice = function slice (start, end) { + var len = this.length + start = ~~start + end = end === undefined ? len : ~~end + + if (start < 0) { + start += len + if (start < 0) start = 0 + } else if (start > len) { + start = len + } + + if (end < 0) { + end += len + if (end < 0) end = 0 + } else if (end > len) { + end = len + } + + if (end < start) end = start + + var newBuf = this.subarray(start, end) + // Return an augmented `Uint8Array` instance + Object.setPrototypeOf(newBuf, Buffer.prototype) + + return newBuf +} + +/* + * Need to make sure that buffer isn't trying to write out of bounds. + */ +function checkOffset (offset, ext, length) { + if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') + if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') +} + +Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) + + var val = this[offset] + var mul = 1 + var i = 0 + while (++i < byteLength && (mul *= 0x100)) { + val += this[offset + i] * mul + } + + return val +} + +Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + checkOffset(offset, byteLength, this.length) + } + + var val = this[offset + --byteLength] + var mul = 1 + while (byteLength > 0 && (mul *= 0x100)) { + val += this[offset + --byteLength] * mul + } + + return val +} + +Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 1, this.length) + return this[offset] +} + +Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + return this[offset] | (this[offset + 1] << 8) +} + +Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + return (this[offset] << 8) | this[offset + 1] +} + +Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + + return ((this[offset]) | + (this[offset + 1] << 8) | + (this[offset + 2] << 16)) + + (this[offset + 3] * 0x1000000) +} + +Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + + return (this[offset] * 0x1000000) + + ((this[offset + 1] << 16) | + (this[offset + 2] << 8) | + this[offset + 3]) +} + +Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) + + var val = this[offset] + var mul = 1 + var i = 0 + while (++i < byteLength && (mul *= 0x100)) { + val += this[offset + i] * mul + } + mul *= 0x80 + + if (val >= mul) val -= Math.pow(2, 8 * byteLength) + + return val +} + +Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) + + var i = byteLength + var mul = 1 + var val = this[offset + --i] + while (i > 0 && (mul *= 0x100)) { + val += this[offset + --i] * mul + } + mul *= 0x80 + + if (val >= mul) val -= Math.pow(2, 8 * byteLength) + + return val +} + +Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 1, this.length) + if (!(this[offset] & 0x80)) return (this[offset]) + return ((0xff - this[offset] + 1) * -1) +} + +Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + var val = this[offset] | (this[offset + 1] << 8) + return (val & 0x8000) ? val | 0xFFFF0000 : val +} + +Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + var val = this[offset + 1] | (this[offset] << 8) + return (val & 0x8000) ? val | 0xFFFF0000 : val +} + +Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + + return (this[offset]) | + (this[offset + 1] << 8) | + (this[offset + 2] << 16) | + (this[offset + 3] << 24) +} + +Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + + return (this[offset] << 24) | + (this[offset + 1] << 16) | + (this[offset + 2] << 8) | + (this[offset + 3]) +} + +Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + return ieee754.read(this, offset, true, 23, 4) +} + +Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + return ieee754.read(this, offset, false, 23, 4) +} + +Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 8, this.length) + return ieee754.read(this, offset, true, 52, 8) +} + +Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 8, this.length) + return ieee754.read(this, offset, false, 52, 8) +} + +function checkInt (buf, value, offset, ext, max, min) { + if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') + if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') + if (offset + ext > buf.length) throw new RangeError('Index out of range') +} + +Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + var maxBytes = Math.pow(2, 8 * byteLength) - 1 + checkInt(this, value, offset, byteLength, maxBytes, 0) + } + + var mul = 1 + var i = 0 + this[offset] = value & 0xFF + while (++i < byteLength && (mul *= 0x100)) { + this[offset + i] = (value / mul) & 0xFF + } + + return offset + byteLength +} + +Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + var maxBytes = Math.pow(2, 8 * byteLength) - 1 + checkInt(this, value, offset, byteLength, maxBytes, 0) + } + + var i = byteLength - 1 + var mul = 1 + this[offset + i] = value & 0xFF + while (--i >= 0 && (mul *= 0x100)) { + this[offset + i] = (value / mul) & 0xFF + } + + return offset + byteLength +} + +Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) + this[offset] = (value & 0xff) + return offset + 1 +} + +Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + return offset + 2 +} + +Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) + this[offset] = (value >>> 8) + this[offset + 1] = (value & 0xff) + return offset + 2 +} + +Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) + this[offset + 3] = (value >>> 24) + this[offset + 2] = (value >>> 16) + this[offset + 1] = (value >>> 8) + this[offset] = (value & 0xff) + return offset + 4 +} + +Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) + this[offset] = (value >>> 24) + this[offset + 1] = (value >>> 16) + this[offset + 2] = (value >>> 8) + this[offset + 3] = (value & 0xff) + return offset + 4 +} + +Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + var limit = Math.pow(2, (8 * byteLength) - 1) + + checkInt(this, value, offset, byteLength, limit - 1, -limit) + } + + var i = 0 + var mul = 1 + var sub = 0 + this[offset] = value & 0xFF + while (++i < byteLength && (mul *= 0x100)) { + if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { + sub = 1 + } + this[offset + i] = ((value / mul) >> 0) - sub & 0xFF + } + + return offset + byteLength +} + +Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + var limit = Math.pow(2, (8 * byteLength) - 1) + + checkInt(this, value, offset, byteLength, limit - 1, -limit) + } + + var i = byteLength - 1 + var mul = 1 + var sub = 0 + this[offset + i] = value & 0xFF + while (--i >= 0 && (mul *= 0x100)) { + if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { + sub = 1 + } + this[offset + i] = ((value / mul) >> 0) - sub & 0xFF + } + + return offset + byteLength +} + +Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) + if (value < 0) value = 0xff + value + 1 + this[offset] = (value & 0xff) + return offset + 1 +} + +Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + return offset + 2 +} + +Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) + this[offset] = (value >>> 8) + this[offset + 1] = (value & 0xff) + return offset + 2 +} + +Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + this[offset + 2] = (value >>> 16) + this[offset + 3] = (value >>> 24) + return offset + 4 +} + +Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) + if (value < 0) value = 0xffffffff + value + 1 + this[offset] = (value >>> 24) + this[offset + 1] = (value >>> 16) + this[offset + 2] = (value >>> 8) + this[offset + 3] = (value & 0xff) + return offset + 4 +} + +function checkIEEE754 (buf, value, offset, ext, max, min) { + if (offset + ext > buf.length) throw new RangeError('Index out of range') + if (offset < 0) throw new RangeError('Index out of range') +} + +function writeFloat (buf, value, offset, littleEndian, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) + } + ieee754.write(buf, value, offset, littleEndian, 23, 4) + return offset + 4 +} + +Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { + return writeFloat(this, value, offset, true, noAssert) +} + +Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { + return writeFloat(this, value, offset, false, noAssert) +} + +function writeDouble (buf, value, offset, littleEndian, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) + } + ieee754.write(buf, value, offset, littleEndian, 52, 8) + return offset + 8 +} + +Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { + return writeDouble(this, value, offset, true, noAssert) +} + +Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { + return writeDouble(this, value, offset, false, noAssert) +} + +// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) +Buffer.prototype.copy = function copy (target, targetStart, start, end) { + if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer') + if (!start) start = 0 + if (!end && end !== 0) end = this.length + if (targetStart >= target.length) targetStart = target.length + if (!targetStart) targetStart = 0 + if (end > 0 && end < start) end = start + + // Copy 0 bytes; we're done + if (end === start) return 0 + if (target.length === 0 || this.length === 0) return 0 + + // Fatal error conditions + if (targetStart < 0) { + throw new RangeError('targetStart out of bounds') + } + if (start < 0 || start >= this.length) throw new RangeError('Index out of range') + if (end < 0) throw new RangeError('sourceEnd out of bounds') + + // Are we oob? + if (end > this.length) end = this.length + if (target.length - targetStart < end - start) { + end = target.length - targetStart + start + } + + var len = end - start + + if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') { + // Use built-in when available, missing from IE11 + this.copyWithin(targetStart, start, end) + } else if (this === target && start < targetStart && targetStart < end) { + // descending copy from end + for (var i = len - 1; i >= 0; --i) { + target[i + targetStart] = this[i + start] + } + } else { + Uint8Array.prototype.set.call( + target, + this.subarray(start, end), + targetStart + ) + } + + return len +} + +// Usage: +// buffer.fill(number[, offset[, end]]) +// buffer.fill(buffer[, offset[, end]]) +// buffer.fill(string[, offset[, end]][, encoding]) +Buffer.prototype.fill = function fill (val, start, end, encoding) { + // Handle string cases: + if (typeof val === 'string') { + if (typeof start === 'string') { + encoding = start + start = 0 + end = this.length + } else if (typeof end === 'string') { + encoding = end + end = this.length + } + if (encoding !== undefined && typeof encoding !== 'string') { + throw new TypeError('encoding must be a string') + } + if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { + throw new TypeError('Unknown encoding: ' + encoding) + } + if (val.length === 1) { + var code = val.charCodeAt(0) + if ((encoding === 'utf8' && code < 128) || + encoding === 'latin1') { + // Fast path: If `val` fits into a single byte, use that numeric value. + val = code + } + } + } else if (typeof val === 'number') { + val = val & 255 + } else if (typeof val === 'boolean') { + val = Number(val) + } + + // Invalid ranges are not set to a default, so can range check early. + if (start < 0 || this.length < start || this.length < end) { + throw new RangeError('Out of range index') + } + + if (end <= start) { + return this + } + + start = start >>> 0 + end = end === undefined ? this.length : end >>> 0 + + if (!val) val = 0 + + var i + if (typeof val === 'number') { + for (i = start; i < end; ++i) { + this[i] = val + } + } else { + var bytes = Buffer.isBuffer(val) + ? val + : Buffer.from(val, encoding) + var len = bytes.length + if (len === 0) { + throw new TypeError('The value "' + val + + '" is invalid for argument "value"') + } + for (i = 0; i < end - start; ++i) { + this[i + start] = bytes[i % len] + } + } + + return this +} + +// HELPER FUNCTIONS +// ================ + +var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g + +function base64clean (str) { + // Node takes equal signs as end of the Base64 encoding + str = str.split('=')[0] + // Node strips out invalid characters like \n and \t from the string, base64-js does not + str = str.trim().replace(INVALID_BASE64_RE, '') + // Node converts strings with length < 2 to '' + if (str.length < 2) return '' + // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not + while (str.length % 4 !== 0) { + str = str + '=' + } + return str +} + +function utf8ToBytes (string, units) { + units = units || Infinity + var codePoint + var length = string.length + var leadSurrogate = null + var bytes = [] + + for (var i = 0; i < length; ++i) { + codePoint = string.charCodeAt(i) + + // is surrogate component + if (codePoint > 0xD7FF && codePoint < 0xE000) { + // last char was a lead + if (!leadSurrogate) { + // no lead yet + if (codePoint > 0xDBFF) { + // unexpected trail + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + continue + } else if (i + 1 === length) { + // unpaired lead + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + continue + } + + // valid lead + leadSurrogate = codePoint + + continue + } + + // 2 leads in a row + if (codePoint < 0xDC00) { + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + leadSurrogate = codePoint + continue + } + + // valid surrogate pair + codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 + } else if (leadSurrogate) { + // valid bmp char, but last char was a lead + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + } + + leadSurrogate = null + + // encode utf8 + if (codePoint < 0x80) { + if ((units -= 1) < 0) break + bytes.push(codePoint) + } else if (codePoint < 0x800) { + if ((units -= 2) < 0) break + bytes.push( + codePoint >> 0x6 | 0xC0, + codePoint & 0x3F | 0x80 + ) + } else if (codePoint < 0x10000) { + if ((units -= 3) < 0) break + bytes.push( + codePoint >> 0xC | 0xE0, + codePoint >> 0x6 & 0x3F | 0x80, + codePoint & 0x3F | 0x80 + ) + } else if (codePoint < 0x110000) { + if ((units -= 4) < 0) break + bytes.push( + codePoint >> 0x12 | 0xF0, + codePoint >> 0xC & 0x3F | 0x80, + codePoint >> 0x6 & 0x3F | 0x80, + codePoint & 0x3F | 0x80 + ) + } else { + throw new Error('Invalid code point') + } + } + + return bytes +} + +function asciiToBytes (str) { + var byteArray = [] + for (var i = 0; i < str.length; ++i) { + // Node's code seems to be doing this and not & 0x7F.. + byteArray.push(str.charCodeAt(i) & 0xFF) + } + return byteArray +} + +function utf16leToBytes (str, units) { + var c, hi, lo + var byteArray = [] + for (var i = 0; i < str.length; ++i) { + if ((units -= 2) < 0) break + + c = str.charCodeAt(i) + hi = c >> 8 + lo = c % 256 + byteArray.push(lo) + byteArray.push(hi) + } + + return byteArray +} + +function base64ToBytes (str) { + return base64.toByteArray(base64clean(str)) +} + +function blitBuffer (src, dst, offset, length) { + for (var i = 0; i < length; ++i) { + if ((i + offset >= dst.length) || (i >= src.length)) break + dst[i + offset] = src[i] + } + return i +} + +// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass +// the `instanceof` check but they should be treated as of that type. +// See: https://github.com/feross/buffer/issues/166 +function isInstance (obj, type) { + return obj instanceof type || + (obj != null && obj.constructor != null && obj.constructor.name != null && + obj.constructor.name === type.name) +} +function numberIsNaN (obj) { + // For IE11 support + return obj !== obj // eslint-disable-line no-self-compare +} + +// Create lookup table for `toString('hex')` +// See: https://github.com/feross/buffer/issues/219 +var hexSliceLookupTable = (function () { + var alphabet = '0123456789abcdef' + var table = new Array(256) + for (var i = 0; i < 16; ++i) { + var i16 = i * 16 + for (var j = 0; j < 16; ++j) { + table[i16 + j] = alphabet[i] + alphabet[j] + } + } + return table +})() + +}).call(this,require("buffer").Buffer) +},{"base64-js":56,"buffer":146,"ieee754":395}],147:[function(require,module,exports){ +/** + * @license + * https://github.com/bitcoincashjs/cashaddr + * Copyright (c) 2017-2018 Emilio Almansi + * Distributed under the MIT software license, see the accompanying + * file LICENSE or http://www.opensource.org/licenses/mit-license.php. + */ + +'use strict'; + +var validate = require('./validation').validate; + +/** + * Base32 encoding and decoding. + * + * @module base32 + */ + +/** + * Charset containing the 32 symbols used in the base32 encoding. + * @private + */ +var CHARSET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l'; + +/** + * Inverted index mapping each symbol into its index within the charset. + * @private + */ +var CHARSET_INVERSE_INDEX = { + 'q': 0, 'p': 1, 'z': 2, 'r': 3, 'y': 4, '9': 5, 'x': 6, '8': 7, + 'g': 8, 'f': 9, '2': 10, 't': 11, 'v': 12, 'd': 13, 'w': 14, '0': 15, + 's': 16, '3': 17, 'j': 18, 'n': 19, '5': 20, '4': 21, 'k': 22, 'h': 23, + 'c': 24, 'e': 25, '6': 26, 'm': 27, 'u': 28, 'a': 29, '7': 30, 'l': 31, +}; + +/** + * Encodes the given array of 5-bit integers as a base32-encoded string. + * + * @static + * @param {Uint8Array} data Array of integers between 0 and 31 inclusive. + * @returns {string} + * @throws {ValidationError} + */ +function encode(data) { + validate(data instanceof Uint8Array, 'Invalid data: ' + data + '.'); + var base32 = ''; + for (var i = 0; i < data.length; ++i) { + var value = data[i]; + validate(0 <= value && value < 32, 'Invalid value: ' + value + '.'); + base32 += CHARSET[value]; + } + return base32; +} + +/** + * Decodes the given base32-encoded string into an array of 5-bit integers. + * + * @static + * @param {string} string + * @returns {Uint8Array} + * @throws {ValidationError} + */ +function decode(string) { + validate(typeof string === 'string', 'Invalid base32-encoded string: ' + string + '.'); + var data = new Uint8Array(string.length); + for (var i = 0; i < string.length; ++i) { + var value = string[i]; + validate(value in CHARSET_INVERSE_INDEX, 'Invalid value: ' + value + '.'); + data[i] = CHARSET_INVERSE_INDEX[value]; + } + return data; +} + +module.exports = { + encode: encode, + decode: decode, +}; + +},{"./validation":150}],148:[function(require,module,exports){ +/** + * @license + * https://github.com/bitcoincashjs/cashaddr + * Copyright (c) 2017-2018 Emilio Almansi + * Distributed under the MIT software license, see the accompanying + * file LICENSE or http://www.opensource.org/licenses/mit-license.php. + */ + +'use strict'; + +var base32 = require('./base32'); +var bigInt = require('big-integer'); +var convertBits = require('./convertBits'); +var validation = require('./validation'); +var validate = validation.validate; + +/** + * Encoding and decoding of the new Cash Address format for Bitcoin Cash.
+ * Compliant with the original cashaddr specification: + * {@link https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md} + * @module cashaddr + */ + +/** + * Encodes a hash from a given type into a Bitcoin Cash address with the given prefix. + * + * @static + * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. + * @param {string} type Type of address to generate. Either 'P2PKH' or 'P2SH'. + * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers. + * @returns {string} + * @throws {ValidationError} + */ +function encode(prefix, type, hash) { + validate(typeof prefix === 'string' && isValidPrefix(prefix), 'Invalid prefix: ' + prefix + '.'); + validate(typeof type === 'string', 'Invalid type: ' + type + '.'); + validate(hash instanceof Uint8Array, 'Invalid hash: ' + hash + '.'); + var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1)); + var versionByte = getTypeBits(type) + getHashSizeBits(hash); + var payloadData = toUint5Array(concat(Uint8Array.of(versionByte), hash)); + var checksumData = concat(concat(prefixData, payloadData), new Uint8Array(8)); + var payload = concat(payloadData, checksumToUint5Array(polymod(checksumData))); + return prefix + ':' + base32.encode(payload); +} + +/** + * Decodes the given address into its constituting prefix, type and hash. See [#encode()]{@link encode}. + * + * @static + * @param {string} address Address to decode. E.g.: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a'. + * @returns {object} + * @throws {ValidationError} + */ +function decode(address) { + validate(typeof address === 'string' && hasSingleCase(address), 'Invalid address: ' + address + '.'); + var pieces = address.toLowerCase().split(':'); + validate(pieces.length === 2, 'Missing prefix: ' + address + '.'); + var prefix = pieces[0]; + var payload = base32.decode(pieces[1]); + validate(validChecksum(prefix, payload), 'Invalid checksum: ' + address + '.'); + var payloadData = fromUint5Array(payload.slice(0, -8)); + var versionByte = payloadData[0]; + var hash = payloadData.slice(1); + validate(getHashSize(versionByte) === hash.length * 8, 'Invalid hash size: ' + address + '.'); + var type = getType(versionByte); + return { + prefix: prefix, + type: type, + hash: hash, + }; +} + +/** + * Error thrown when encoding or decoding fail due to invalid input. + * + * @constructor ValidationError + * @param {string} message Error description. + */ +var ValidationError = validation.ValidationError; + +/** + * Valid address prefixes. + * + * @private + */ +var VALID_PREFIXES = ['bitcoincash', 'bchtest', 'bchreg', 'simpleledger', 'slptest', 'slpreg']; + +/** + * Checks whether a string is a valid prefix; ie., it has a single letter case + * and is one of 'bitcoincash', 'bchtest', or 'bchreg'. + * + * @private + * @param {string} prefix + * @returns {boolean} + */ +function isValidPrefix(prefix) { + return hasSingleCase(prefix) && VALID_PREFIXES.indexOf(prefix.toLowerCase()) !== -1; +} + +/** + * Derives an array from the given prefix to be used in the computation + * of the address' checksum. + * + * @private + * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. + * @returns {Uint8Array} + */ +function prefixToUint5Array(prefix) { + var result = new Uint8Array(prefix.length); + for (var i = 0; i < prefix.length; ++i) { + result[i] = prefix[i].charCodeAt(0) & 31; + } + return result; +} + +/** + * Returns an array representation of the given checksum to be encoded + * within the address' payload. + * + * @private + * @param {BigInteger} checksum Computed checksum. + * @returns {Uint8Array} + */ +function checksumToUint5Array(checksum) { + var result = new Uint8Array(8); + for (var i = 0; i < 8; ++i) { + result[7 - i] = checksum.and(31).toJSNumber(); + checksum = checksum.shiftRight(5); + } + return result; +} + +/** + * Returns the bit representation of the given type within the version + * byte. + * + * @private + * @param {string} type Address type. Either 'P2PKH' or 'P2SH'. + * @returns {number} + * @throws {ValidationError} + */ +function getTypeBits(type) { + switch (type) { + case 'P2PKH': + return 0; + case 'P2SH': + return 8; + default: + throw new ValidationError('Invalid type: ' + type + '.'); + } +} + +/** + * Retrieves the address type from its bit representation within the + * version byte. + * + * @private + * @param {number} versionByte + * @returns {string} + * @throws {ValidationError} + */ +function getType(versionByte) { + switch (versionByte & 120) { + case 0: + return 'P2PKH'; + case 8: + return 'P2SH'; + default: + throw new ValidationError('Invalid address type in version byte: ' + versionByte + '.'); + } +} + +/** + * Returns the bit representation of the length in bits of the given + * hash within the version byte. + * + * @private + * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers. + * @returns {number} + * @throws {ValidationError} + */ +function getHashSizeBits(hash) { + switch (hash.length * 8) { + case 160: + return 0; + case 192: + return 1; + case 224: + return 2; + case 256: + return 3; + case 320: + return 4; + case 384: + return 5; + case 448: + return 6; + case 512: + return 7; + default: + throw new ValidationError('Invalid hash size: ' + hash.length + '.'); + } +} + +/** + * Retrieves the the length in bits of the encoded hash from its bit + * representation within the version byte. + * + * @private + * @param {number} versionByte + * @returns {number} + */ +function getHashSize(versionByte) { + switch (versionByte & 7) { + case 0: + return 160; + case 1: + return 192; + case 2: + return 224; + case 3: + return 256; + case 4: + return 320; + case 5: + return 384; + case 6: + return 448; + case 7: + return 512; + } +} + +/** + * Converts an array of 8-bit integers into an array of 5-bit integers, + * right-padding with zeroes if necessary. + * + * @private + * @param {Uint8Array} data + * @returns {Uint8Array} + */ +function toUint5Array(data) { + return convertBits(data, 8, 5); +} + +/** + * Converts an array of 5-bit integers back into an array of 8-bit integers, + * removing extra zeroes left from padding if necessary. + * Throws a {@link ValidationError} if input is not a zero-padded array of 8-bit integers. + * + * @private + * @param {Uint8Array} data + * @returns {Uint8Array} + * @throws {ValidationError} + */ +function fromUint5Array(data) { + return convertBits(data, 5, 8, true); +} + +/** + * Returns the concatenation a and b. + * + * @private + * @param {Uint8Array} a + * @param {Uint8Array} b + * @returns {Uint8Array} + * @throws {ValidationError} + */ +function concat(a, b) { + var ab = new Uint8Array(a.length + b.length); + ab.set(a); + ab.set(b, a.length); + return ab; +} + +/** + * Computes a checksum from the given input data as specified for the CashAddr + * format: https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md. + * + * @private + * @param {Uint8Array} data Array of 5-bit integers over which the checksum is to be computed. + * @returns {BigInteger} + */ +function polymod(data) { + var GENERATOR = [0x98f2bc8e61, 0x79b76d99e2, 0xf33e5fb3c4, 0xae2eabe2a8, 0x1e4f43e470]; + var checksum = bigInt(1); + for (var i = 0; i < data.length; ++i) { + var value = data[i]; + var topBits = checksum.shiftRight(35); + checksum = checksum.and(0x07ffffffff).shiftLeft(5).xor(value); + for (var j = 0; j < GENERATOR.length; ++j) { + if (topBits.shiftRight(j).and(1).equals(1)) { + checksum = checksum.xor(GENERATOR[j]); + } + } + } + return checksum.xor(1); +} + +/** + * Verify that the payload has not been corrupted by checking that the + * checksum is valid. + * + * @private + * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. + * @param {Uint8Array} payload Array of 5-bit integers containing the address' payload. + * @returns {boolean} + */ +function validChecksum(prefix, payload) { + var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1)); + var checksumData = concat(prefixData, payload); + return polymod(checksumData).equals(0); +} + +/** + * Returns true if, and only if, the given string contains either uppercase + * or lowercase letters, but not both. + * + * @private + * @param {string} string Input string. + * @returns {boolean} + */ +function hasSingleCase(string) { + return string === string.toLowerCase() || string === string.toUpperCase(); +} + +module.exports = { + encode: encode, + decode: decode, + ValidationError: ValidationError, +}; + +},{"./base32":147,"./convertBits":149,"./validation":150,"big-integer":60}],149:[function(require,module,exports){ +// Copyright (c) 2017-2018 Emilio Almansi +// Copyright (c) 2017 Pieter Wuille +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +'use strict'; + +var validate = require('./validation').validate; + +/** + * Converts an array of integers made up of 'from' bits into an + * array of integers made up of 'to' bits. The output array is + * zero-padded if necessary, unless strict mode is true. + * Throws a {@link ValidationError} if input is invalid. + * Original by Pieter Wuille: https://github.com/sipa/bech32. + * + * @param {Uint8Array} data Array of integers made up of 'from' bits. + * @param {number} from Length in bits of elements in the input array. + * @param {number} to Length in bits of elements in the output array. + * @param {bool} strictMode Require the conversion to be completed without padding. + * @returns {Uint8Array} + */ +module.exports = function(data, from, to, strictMode) { + var length = strictMode + ? Math.floor(data.length * from / to) + : Math.ceil(data.length * from / to); + var mask = (1 << to) - 1; + var result = new Uint8Array(length); + var index = 0; + var accumulator = 0; + var bits = 0; + for (var i = 0; i < data.length; ++i) { + var value = data[i]; + validate(0 <= value && (value >> from) === 0, 'Invalid value: ' + value + '.'); + accumulator = (accumulator << from) | value; + bits += from; + while (bits >= to) { + bits -= to; + result[index] = (accumulator >> bits) & mask; + ++index; + } + } + if (!strictMode) { + if (bits > 0) { + result[index] = (accumulator << (to - bits)) & mask; + ++index; + } + } else { + validate( + bits < from && ((accumulator << (to - bits)) & mask) === 0, + 'Input cannot be converted to ' + to + ' bits without padding, but strict mode was used.' + ); + } + return result; +}; + +},{"./validation":150}],150:[function(require,module,exports){ +/** + * @license + * https://github.com/bitcoincashjs/cashaddr + * Copyright (c) 2017-2018 Emilio Almansi + * Distributed under the MIT software license, see the accompanying + * file LICENSE or http://www.opensource.org/licenses/mit-license.php. + */ + +'use strict'; + +/** + * Validation utility. + * + * @module validation + */ + +/** + * Error thrown when encoding or decoding fail due to invalid input. + * + * @constructor ValidationError + * @param {string} message Error description. + */ +function ValidationError(message) { + var error = new Error(); + this.name = error.name = 'ValidationError'; + this.message = error.message = message; + this.stack = error.stack; +} + +ValidationError.prototype = Object.create(Error.prototype); + +/** + * Validates a given condition, throwing a {@link ValidationError} if + * the given condition does not hold. + * + * @static + * @param {boolean} condition Condition to validate. + * @param {string} message Error message in case the condition does not hold. + */ +function validate(condition, message) { + if (!condition) { + throw new ValidationError(message); + } +} + +module.exports = { + ValidationError: ValidationError, + validate: validate, +}; + +},{}],151:[function(require,module,exports){ +arguments[4][147][0].apply(exports,arguments) +},{"./validation":154,"dup":147}],152:[function(require,module,exports){ +/** + * @license + * https://github.com/bitcoincashjs/cashaddr + * Copyright (c) 2017-2018 Emilio Almansi + * Distributed under the MIT software license, see the accompanying + * file LICENSE or http://www.opensource.org/licenses/mit-license.php. + */ + +'use strict'; + +var base32 = require('./base32'); +var bigInt = require('big-integer'); +var convertBits = require('./convertBits'); +var validation = require('./validation'); +var validate = validation.validate; + +/** + * Encoding and decoding of the new Cash Address format for Bitcoin Cash.
+ * Compliant with the original cashaddr specification: + * {@link https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md} + * @module cashaddr + */ + +/** + * Encodes a hash from a given type into a Bitcoin Cash address with the given prefix. + * + * @static + * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. + * @param {string} type Type of address to generate. Either 'P2PKH' or 'P2SH'. + * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers. + * @returns {string} + * @throws {ValidationError} + */ +function encode(prefix, type, hash) { + validate(typeof prefix === 'string' && isValidPrefix(prefix), 'Invalid prefix: ' + prefix + '.'); + validate(typeof type === 'string', 'Invalid type: ' + type + '.'); + validate(hash instanceof Uint8Array, 'Invalid hash: ' + hash + '.'); + var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1)); + var versionByte = getTypeBits(type) + getHashSizeBits(hash); + var payloadData = toUint5Array(concat(new Uint8Array([versionByte]), hash)); + var checksumData = concat(concat(prefixData, payloadData), new Uint8Array(8)); + var payload = concat(payloadData, checksumToUint5Array(polymod(checksumData))); + return prefix + ':' + base32.encode(payload); +} + +/** + * Decodes the given address into its constituting prefix, type and hash. See [#encode()]{@link encode}. + * + * @static + * @param {string} address Address to decode. E.g.: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a'. + * @returns {object} + * @throws {ValidationError} + */ +function decode(address) { + validate(typeof address === 'string' && hasSingleCase(address), 'Invalid address: ' + address + '.'); + var pieces = address.toLowerCase().split(':'); + validate(pieces.length === 2, 'Missing prefix: ' + address + '.'); + var prefix = pieces[0]; + var payload = base32.decode(pieces[1]); + validate(validChecksum(prefix, payload), 'Invalid checksum: ' + address + '.'); + var payloadData = fromUint5Array(payload.subarray(0, -8)); + var versionByte = payloadData[0]; + var hash = payloadData.subarray(1); + validate(getHashSize(versionByte) === hash.length * 8, 'Invalid hash size: ' + address + '.'); + var type = getType(versionByte); + return { + prefix: prefix, + type: type, + hash: hash, + }; +} + +/** + * Error thrown when encoding or decoding fail due to invalid input. + * + * @constructor ValidationError + * @param {string} message Error description. + */ +var ValidationError = validation.ValidationError; + +/** + * Valid address prefixes. + * + * @private + */ +var VALID_PREFIXES = ['bitcoincash', 'bchtest', 'bchreg']; + +/** + * Checks whether a string is a valid prefix; ie., it has a single letter case + * and is one of 'bitcoincash', 'bchtest', or 'bchreg'. + * + * @private + * @param {string} prefix + * @returns {boolean} + */ +function isValidPrefix(prefix) { + return hasSingleCase(prefix) && VALID_PREFIXES.indexOf(prefix.toLowerCase()) !== -1; +} + +/** + * Derives an array from the given prefix to be used in the computation + * of the address' checksum. + * + * @private + * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. + * @returns {Uint8Array} + */ +function prefixToUint5Array(prefix) { + var result = new Uint8Array(prefix.length); + for (var i = 0; i < prefix.length; ++i) { + result[i] = prefix[i].charCodeAt(0) & 31; + } + return result; +} + +/** + * Returns an array representation of the given checksum to be encoded + * within the address' payload. + * + * @private + * @param {BigInteger} checksum Computed checksum. + * @returns {Uint8Array} + */ +function checksumToUint5Array(checksum) { + var result = new Uint8Array(8); + for (var i = 0; i < 8; ++i) { + result[7 - i] = checksum.and(31).toJSNumber(); + checksum = checksum.shiftRight(5); + } + return result; +} + +/** + * Returns the bit representation of the given type within the version + * byte. + * + * @private + * @param {string} type Address type. Either 'P2PKH' or 'P2SH'. + * @returns {number} + * @throws {ValidationError} + */ +function getTypeBits(type) { + switch (type) { + case 'P2PKH': + return 0; + case 'P2SH': + return 8; + default: + throw new ValidationError('Invalid type: ' + type + '.'); + } +} + +/** + * Retrieves the address type from its bit representation within the + * version byte. + * + * @private + * @param {number} versionByte + * @returns {string} + * @throws {ValidationError} + */ +function getType(versionByte) { + switch (versionByte & 120) { + case 0: + return 'P2PKH'; + case 8: + return 'P2SH'; + default: + throw new ValidationError('Invalid address type in version byte: ' + versionByte + '.'); + } +} + +/** + * Returns the bit representation of the length in bits of the given + * hash within the version byte. + * + * @private + * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers. + * @returns {number} + * @throws {ValidationError} + */ +function getHashSizeBits(hash) { + switch (hash.length * 8) { + case 160: + return 0; + case 192: + return 1; + case 224: + return 2; + case 256: + return 3; + case 320: + return 4; + case 384: + return 5; + case 448: + return 6; + case 512: + return 7; + default: + throw new ValidationError('Invalid hash size: ' + hash.length + '.'); + } +} + +/** + * Retrieves the the length in bits of the encoded hash from its bit + * representation within the version byte. + * + * @private + * @param {number} versionByte + * @returns {number} + */ +function getHashSize(versionByte) { + switch (versionByte & 7) { + case 0: + return 160; + case 1: + return 192; + case 2: + return 224; + case 3: + return 256; + case 4: + return 320; + case 5: + return 384; + case 6: + return 448; + case 7: + return 512; + } +} + +/** + * Converts an array of 8-bit integers into an array of 5-bit integers, + * right-padding with zeroes if necessary. + * + * @private + * @param {Uint8Array} data + * @returns {Uint8Array} + */ +function toUint5Array(data) { + return convertBits(data, 8, 5); +} + +/** + * Converts an array of 5-bit integers back into an array of 8-bit integers, + * removing extra zeroes left from padding if necessary. + * Throws a {@link ValidationError} if input is not a zero-padded array of 8-bit integers. + * + * @private + * @param {Uint8Array} data + * @returns {Uint8Array} + * @throws {ValidationError} + */ +function fromUint5Array(data) { + return convertBits(data, 5, 8, true); +} + +/** + * Returns the concatenation a and b. + * + * @private + * @param {Uint8Array} a + * @param {Uint8Array} b + * @returns {Uint8Array} + * @throws {ValidationError} + */ +function concat(a, b) { + var ab = new Uint8Array(a.length + b.length); + ab.set(a); + ab.set(b, a.length); + return ab; +} + +/** + * Computes a checksum from the given input data as specified for the CashAddr + * format: https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md. + * + * @private + * @param {Uint8Array} data Array of 5-bit integers over which the checksum is to be computed. + * @returns {BigInteger} + */ +function polymod(data) { + var GENERATOR = [0x98f2bc8e61, 0x79b76d99e2, 0xf33e5fb3c4, 0xae2eabe2a8, 0x1e4f43e470]; + var checksum = bigInt(1); + for (var i = 0; i < data.length; ++i) { + var value = data[i]; + var topBits = checksum.shiftRight(35); + checksum = checksum.and(0x07ffffffff).shiftLeft(5).xor(value); + for (var j = 0; j < GENERATOR.length; ++j) { + if (topBits.shiftRight(j).and(1).equals(1)) { + checksum = checksum.xor(GENERATOR[j]); + } + } + } + return checksum.xor(1); +} + +/** + * Verify that the payload has not been corrupted by checking that the + * checksum is valid. + * + * @private + * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. + * @param {Uint8Array} payload Array of 5-bit integers containing the address' payload. + * @returns {boolean} + */ +function validChecksum(prefix, payload) { + var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1)); + var checksumData = concat(prefixData, payload); + return polymod(checksumData).equals(0); +} + +/** + * Returns true if, and only if, the given string contains either uppercase + * or lowercase letters, but not both. + * + * @private + * @param {string} string Input string. + * @returns {boolean} + */ +function hasSingleCase(string) { + return string === string.toLowerCase() || string === string.toUpperCase(); +} + +module.exports = { + encode: encode, + decode: decode, + ValidationError: ValidationError, +}; + +},{"./base32":151,"./convertBits":153,"./validation":154,"big-integer":60}],153:[function(require,module,exports){ +arguments[4][149][0].apply(exports,arguments) +},{"./validation":154,"dup":149}],154:[function(require,module,exports){ +arguments[4][150][0].apply(exports,arguments) +},{"dup":150}],155:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var Transform = require('stream').Transform +var StringDecoder = require('string_decoder').StringDecoder +var inherits = require('inherits') + +function CipherBase (hashMode) { + Transform.call(this) + this.hashMode = typeof hashMode === 'string' + if (this.hashMode) { + this[hashMode] = this._finalOrDigest + } else { + this.final = this._finalOrDigest + } + if (this._final) { + this.__final = this._final + this._final = null + } + this._decoder = null + this._encoding = null +} +inherits(CipherBase, Transform) + +CipherBase.prototype.update = function (data, inputEnc, outputEnc) { + if (typeof data === 'string') { + data = Buffer.from(data, inputEnc) + } + + var outData = this._update(data) + if (this.hashMode) return this + + if (outputEnc) { + outData = this._toString(outData, outputEnc) + } + + return outData +} + +CipherBase.prototype.setAutoPadding = function () {} +CipherBase.prototype.getAuthTag = function () { + throw new Error('trying to get auth tag in unsupported state') +} + +CipherBase.prototype.setAuthTag = function () { + throw new Error('trying to set auth tag in unsupported state') +} + +CipherBase.prototype.setAAD = function () { + throw new Error('trying to set aad in unsupported state') +} + +CipherBase.prototype._transform = function (data, _, next) { + var err + try { + if (this.hashMode) { + this._update(data) + } else { + this.push(this._update(data)) + } + } catch (e) { + err = e + } finally { + next(err) + } +} +CipherBase.prototype._flush = function (done) { + var err + try { + this.push(this.__final()) + } catch (e) { + err = e + } + + done(err) +} +CipherBase.prototype._finalOrDigest = function (outputEnc) { + var outData = this.__final() || Buffer.alloc(0) + if (outputEnc) { + outData = this._toString(outData, outputEnc, true) + } + return outData +} + +CipherBase.prototype._toString = function (value, enc, fin) { + if (!this._decoder) { + this._decoder = new StringDecoder(enc) + this._encoding = enc + } + + if (this._encoding !== enc) throw new Error('can\'t switch encodings') + + var out = this._decoder.write(value) + if (fin) { + out += this._decoder.end() + } + + return out +} + +module.exports = CipherBase + +},{"inherits":396,"safe-buffer":742,"stream":808,"string_decoder":809}],156:[function(require,module,exports){ +require('../modules/es6.object.to-string'); +require('../modules/es6.string.iterator'); +require('../modules/web.dom.iterable'); +require('../modules/es6.map'); +module.exports = require('../modules/_core').Map; + +},{"../modules/_core":169,"../modules/es6.map":219,"../modules/es6.object.to-string":220,"../modules/es6.string.iterator":221,"../modules/web.dom.iterable":222}],157:[function(require,module,exports){ +module.exports = function (it) { + if (typeof it != 'function') throw TypeError(it + ' is not a function!'); + return it; +}; + +},{}],158:[function(require,module,exports){ +module.exports = function () { /* empty */ }; + +},{}],159:[function(require,module,exports){ +module.exports = function (it, Constructor, name, forbiddenField) { + if (!(it instanceof Constructor) || (forbiddenField !== undefined && forbiddenField in it)) { + throw TypeError(name + ': incorrect invocation!'); + } return it; +}; + +},{}],160:[function(require,module,exports){ +var isObject = require('./_is-object'); +module.exports = function (it) { + if (!isObject(it)) throw TypeError(it + ' is not an object!'); + return it; +}; + +},{"./_is-object":186}],161:[function(require,module,exports){ +// false -> Array#indexOf +// true -> Array#includes +var toIObject = require('./_to-iobject'); +var toLength = require('./_to-length'); +var toAbsoluteIndex = require('./_to-absolute-index'); +module.exports = function (IS_INCLUDES) { + return function ($this, el, fromIndex) { + var O = toIObject($this); + var length = toLength(O.length); + var index = toAbsoluteIndex(fromIndex, length); + var value; + // Array#includes uses SameValueZero equality algorithm + // eslint-disable-next-line no-self-compare + if (IS_INCLUDES && el != el) while (length > index) { + value = O[index++]; + // eslint-disable-next-line no-self-compare + if (value != value) return true; + // Array#indexOf ignores holes, Array#includes - not + } else for (;length > index; index++) if (IS_INCLUDES || index in O) { + if (O[index] === el) return IS_INCLUDES || index || 0; + } return !IS_INCLUDES && -1; + }; +}; + +},{"./_to-absolute-index":208,"./_to-iobject":210,"./_to-length":211}],162:[function(require,module,exports){ +// 0 -> Array#forEach +// 1 -> Array#map +// 2 -> Array#filter +// 3 -> Array#some +// 4 -> Array#every +// 5 -> Array#find +// 6 -> Array#findIndex +var ctx = require('./_ctx'); +var IObject = require('./_iobject'); +var toObject = require('./_to-object'); +var toLength = require('./_to-length'); +var asc = require('./_array-species-create'); +module.exports = function (TYPE, $create) { + var IS_MAP = TYPE == 1; + var IS_FILTER = TYPE == 2; + var IS_SOME = TYPE == 3; + var IS_EVERY = TYPE == 4; + var IS_FIND_INDEX = TYPE == 6; + var NO_HOLES = TYPE == 5 || IS_FIND_INDEX; + var create = $create || asc; + return function ($this, callbackfn, that) { + var O = toObject($this); + var self = IObject(O); + var f = ctx(callbackfn, that, 3); + var length = toLength(self.length); + var index = 0; + var result = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined; + var val, res; + for (;length > index; index++) if (NO_HOLES || index in self) { + val = self[index]; + res = f(val, index, O); + if (TYPE) { + if (IS_MAP) result[index] = res; // map + else if (res) switch (TYPE) { + case 3: return true; // some + case 5: return val; // find + case 6: return index; // findIndex + case 2: result.push(val); // filter + } else if (IS_EVERY) return false; // every + } + } + return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result; + }; +}; + +},{"./_array-species-create":164,"./_ctx":170,"./_iobject":183,"./_to-length":211,"./_to-object":212}],163:[function(require,module,exports){ +var isObject = require('./_is-object'); +var isArray = require('./_is-array'); +var SPECIES = require('./_wks')('species'); + +module.exports = function (original) { + var C; + if (isArray(original)) { + C = original.constructor; + // cross-realm fallback + if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined; + if (isObject(C)) { + C = C[SPECIES]; + if (C === null) C = undefined; + } + } return C === undefined ? Array : C; +}; + +},{"./_is-array":185,"./_is-object":186,"./_wks":216}],164:[function(require,module,exports){ +// 9.4.2.3 ArraySpeciesCreate(originalArray, length) +var speciesConstructor = require('./_array-species-constructor'); + +module.exports = function (original, length) { + return new (speciesConstructor(original))(length); +}; + +},{"./_array-species-constructor":163}],165:[function(require,module,exports){ +// getting tag from 19.1.3.6 Object.prototype.toString() +var cof = require('./_cof'); +var TAG = require('./_wks')('toStringTag'); +// ES3 wrong here +var ARG = cof(function () { return arguments; }()) == 'Arguments'; + +// fallback for IE11 Script Access Denied error +var tryGet = function (it, key) { + try { + return it[key]; + } catch (e) { /* empty */ } +}; + +module.exports = function (it) { + var O, T, B; + return it === undefined ? 'Undefined' : it === null ? 'Null' + // @@toStringTag case + : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T + // builtinTag case + : ARG ? cof(O) + // ES3 arguments fallback + : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B; +}; + +},{"./_cof":166,"./_wks":216}],166:[function(require,module,exports){ +var toString = {}.toString; + +module.exports = function (it) { + return toString.call(it).slice(8, -1); +}; + +},{}],167:[function(require,module,exports){ +'use strict'; +var dP = require('./_object-dp').f; +var create = require('./_object-create'); +var redefineAll = require('./_redefine-all'); +var ctx = require('./_ctx'); +var anInstance = require('./_an-instance'); +var forOf = require('./_for-of'); +var $iterDefine = require('./_iter-define'); +var step = require('./_iter-step'); +var setSpecies = require('./_set-species'); +var DESCRIPTORS = require('./_descriptors'); +var fastKey = require('./_meta').fastKey; +var validate = require('./_validate-collection'); +var SIZE = DESCRIPTORS ? '_s' : 'size'; + +var getEntry = function (that, key) { + // fast case + var index = fastKey(key); + var entry; + if (index !== 'F') return that._i[index]; + // frozen object case + for (entry = that._f; entry; entry = entry.n) { + if (entry.k == key) return entry; + } +}; + +module.exports = { + getConstructor: function (wrapper, NAME, IS_MAP, ADDER) { + var C = wrapper(function (that, iterable) { + anInstance(that, C, NAME, '_i'); + that._t = NAME; // collection type + that._i = create(null); // index + that._f = undefined; // first entry + that._l = undefined; // last entry + that[SIZE] = 0; // size + if (iterable != undefined) forOf(iterable, IS_MAP, that[ADDER], that); + }); + redefineAll(C.prototype, { + // 23.1.3.1 Map.prototype.clear() + // 23.2.3.2 Set.prototype.clear() + clear: function clear() { + for (var that = validate(this, NAME), data = that._i, entry = that._f; entry; entry = entry.n) { + entry.r = true; + if (entry.p) entry.p = entry.p.n = undefined; + delete data[entry.i]; + } + that._f = that._l = undefined; + that[SIZE] = 0; + }, + // 23.1.3.3 Map.prototype.delete(key) + // 23.2.3.4 Set.prototype.delete(value) + 'delete': function (key) { + var that = validate(this, NAME); + var entry = getEntry(that, key); + if (entry) { + var next = entry.n; + var prev = entry.p; + delete that._i[entry.i]; + entry.r = true; + if (prev) prev.n = next; + if (next) next.p = prev; + if (that._f == entry) that._f = next; + if (that._l == entry) that._l = prev; + that[SIZE]--; + } return !!entry; + }, + // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined) + // 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined) + forEach: function forEach(callbackfn /* , that = undefined */) { + validate(this, NAME); + var f = ctx(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3); + var entry; + while (entry = entry ? entry.n : this._f) { + f(entry.v, entry.k, this); + // revert to the last existing entry + while (entry && entry.r) entry = entry.p; + } + }, + // 23.1.3.7 Map.prototype.has(key) + // 23.2.3.7 Set.prototype.has(value) + has: function has(key) { + return !!getEntry(validate(this, NAME), key); + } + }); + if (DESCRIPTORS) dP(C.prototype, 'size', { + get: function () { + return validate(this, NAME)[SIZE]; + } + }); + return C; + }, + def: function (that, key, value) { + var entry = getEntry(that, key); + var prev, index; + // change existing entry + if (entry) { + entry.v = value; + // create new entry + } else { + that._l = entry = { + i: index = fastKey(key, true), // <- index + k: key, // <- key + v: value, // <- value + p: prev = that._l, // <- previous entry + n: undefined, // <- next entry + r: false // <- removed + }; + if (!that._f) that._f = entry; + if (prev) prev.n = entry; + that[SIZE]++; + // add to index + if (index !== 'F') that._i[index] = entry; + } return that; + }, + getEntry: getEntry, + setStrong: function (C, NAME, IS_MAP) { + // add .keys, .values, .entries, [@@iterator] + // 23.1.3.4, 23.1.3.8, 23.1.3.11, 23.1.3.12, 23.2.3.5, 23.2.3.8, 23.2.3.10, 23.2.3.11 + $iterDefine(C, NAME, function (iterated, kind) { + this._t = validate(iterated, NAME); // target + this._k = kind; // kind + this._l = undefined; // previous + }, function () { + var that = this; + var kind = that._k; + var entry = that._l; + // revert to the last existing entry + while (entry && entry.r) entry = entry.p; + // get next entry + if (!that._t || !(that._l = entry = entry ? entry.n : that._t._f)) { + // or finish the iteration + that._t = undefined; + return step(1); + } + // return step by kind + if (kind == 'keys') return step(0, entry.k); + if (kind == 'values') return step(0, entry.v); + return step(0, [entry.k, entry.v]); + }, IS_MAP ? 'entries' : 'values', !IS_MAP, true); + + // add [@@species], 23.1.2.2, 23.2.2.2 + setSpecies(NAME); + } +}; + +},{"./_an-instance":159,"./_ctx":170,"./_descriptors":172,"./_for-of":177,"./_iter-define":189,"./_iter-step":190,"./_meta":193,"./_object-create":194,"./_object-dp":195,"./_redefine-all":201,"./_set-species":203,"./_validate-collection":215}],168:[function(require,module,exports){ +'use strict'; +var global = require('./_global'); +var $export = require('./_export'); +var meta = require('./_meta'); +var fails = require('./_fails'); +var hide = require('./_hide'); +var redefineAll = require('./_redefine-all'); +var forOf = require('./_for-of'); +var anInstance = require('./_an-instance'); +var isObject = require('./_is-object'); +var setToStringTag = require('./_set-to-string-tag'); +var dP = require('./_object-dp').f; +var each = require('./_array-methods')(0); +var DESCRIPTORS = require('./_descriptors'); + +module.exports = function (NAME, wrapper, methods, common, IS_MAP, IS_WEAK) { + var Base = global[NAME]; + var C = Base; + var ADDER = IS_MAP ? 'set' : 'add'; + var proto = C && C.prototype; + var O = {}; + if (!DESCRIPTORS || typeof C != 'function' || !(IS_WEAK || proto.forEach && !fails(function () { + new C().entries().next(); + }))) { + // create collection constructor + C = common.getConstructor(wrapper, NAME, IS_MAP, ADDER); + redefineAll(C.prototype, methods); + meta.NEED = true; + } else { + C = wrapper(function (target, iterable) { + anInstance(target, C, NAME, '_c'); + target._c = new Base(); + if (iterable != undefined) forOf(iterable, IS_MAP, target[ADDER], target); + }); + each('add,clear,delete,forEach,get,has,set,keys,values,entries,toJSON'.split(','), function (KEY) { + var IS_ADDER = KEY == 'add' || KEY == 'set'; + if (KEY in proto && !(IS_WEAK && KEY == 'clear')) hide(C.prototype, KEY, function (a, b) { + anInstance(this, C, KEY); + if (!IS_ADDER && IS_WEAK && !isObject(a)) return KEY == 'get' ? undefined : false; + var result = this._c[KEY](a === 0 ? 0 : a, b); + return IS_ADDER ? this : result; + }); + }); + IS_WEAK || dP(C.prototype, 'size', { + get: function () { + return this._c.size; + } + }); + } + + setToStringTag(C, NAME); + + O[NAME] = C; + $export($export.G + $export.W + $export.F, O); + + if (!IS_WEAK) common.setStrong(C, NAME, IS_MAP); + + return C; +}; + +},{"./_an-instance":159,"./_array-methods":162,"./_descriptors":172,"./_export":175,"./_fails":176,"./_for-of":177,"./_global":178,"./_hide":180,"./_is-object":186,"./_meta":193,"./_object-dp":195,"./_redefine-all":201,"./_set-to-string-tag":204}],169:[function(require,module,exports){ +var core = module.exports = { version: '2.6.11' }; +if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef + +},{}],170:[function(require,module,exports){ +// optional / simple context binding +var aFunction = require('./_a-function'); +module.exports = function (fn, that, length) { + aFunction(fn); + if (that === undefined) return fn; + switch (length) { + case 1: return function (a) { + return fn.call(that, a); + }; + case 2: return function (a, b) { + return fn.call(that, a, b); + }; + case 3: return function (a, b, c) { + return fn.call(that, a, b, c); + }; + } + return function (/* ...args */) { + return fn.apply(that, arguments); + }; +}; + +},{"./_a-function":157}],171:[function(require,module,exports){ +// 7.2.1 RequireObjectCoercible(argument) +module.exports = function (it) { + if (it == undefined) throw TypeError("Can't call method on " + it); + return it; +}; + +},{}],172:[function(require,module,exports){ +// Thank's IE8 for his funny defineProperty +module.exports = !require('./_fails')(function () { + return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7; +}); + +},{"./_fails":176}],173:[function(require,module,exports){ +var isObject = require('./_is-object'); +var document = require('./_global').document; +// typeof document.createElement is 'object' in old IE +var is = isObject(document) && isObject(document.createElement); +module.exports = function (it) { + return is ? document.createElement(it) : {}; +}; + +},{"./_global":178,"./_is-object":186}],174:[function(require,module,exports){ +// IE 8- don't enum bug keys +module.exports = ( + 'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf' +).split(','); + +},{}],175:[function(require,module,exports){ +var global = require('./_global'); +var core = require('./_core'); +var ctx = require('./_ctx'); +var hide = require('./_hide'); +var has = require('./_has'); +var PROTOTYPE = 'prototype'; + +var $export = function (type, name, source) { + var IS_FORCED = type & $export.F; + var IS_GLOBAL = type & $export.G; + var IS_STATIC = type & $export.S; + var IS_PROTO = type & $export.P; + var IS_BIND = type & $export.B; + var IS_WRAP = type & $export.W; + var exports = IS_GLOBAL ? core : core[name] || (core[name] = {}); + var expProto = exports[PROTOTYPE]; + var target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE]; + var key, own, out; + if (IS_GLOBAL) source = name; + for (key in source) { + // contains in native + own = !IS_FORCED && target && target[key] !== undefined; + if (own && has(exports, key)) continue; + // export native or passed + out = own ? target[key] : source[key]; + // prevent global pollution for namespaces + exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key] + // bind timers to global for call from export context + : IS_BIND && own ? ctx(out, global) + // wrap global constructors for prevent change them in library + : IS_WRAP && target[key] == out ? (function (C) { + var F = function (a, b, c) { + if (this instanceof C) { + switch (arguments.length) { + case 0: return new C(); + case 1: return new C(a); + case 2: return new C(a, b); + } return new C(a, b, c); + } return C.apply(this, arguments); + }; + F[PROTOTYPE] = C[PROTOTYPE]; + return F; + // make static versions for prototype methods + })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out; + // export proto methods to core.%CONSTRUCTOR%.methods.%NAME% + if (IS_PROTO) { + (exports.virtual || (exports.virtual = {}))[key] = out; + // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME% + if (type & $export.R && expProto && !expProto[key]) hide(expProto, key, out); + } + } +}; +// type bitmap +$export.F = 1; // forced +$export.G = 2; // global +$export.S = 4; // static +$export.P = 8; // proto +$export.B = 16; // bind +$export.W = 32; // wrap +$export.U = 64; // safe +$export.R = 128; // real proto method for `library` +module.exports = $export; + +},{"./_core":169,"./_ctx":170,"./_global":178,"./_has":179,"./_hide":180}],176:[function(require,module,exports){ +module.exports = function (exec) { + try { + return !!exec(); + } catch (e) { + return true; + } +}; + +},{}],177:[function(require,module,exports){ +var ctx = require('./_ctx'); +var call = require('./_iter-call'); +var isArrayIter = require('./_is-array-iter'); +var anObject = require('./_an-object'); +var toLength = require('./_to-length'); +var getIterFn = require('./core.get-iterator-method'); +var BREAK = {}; +var RETURN = {}; +var exports = module.exports = function (iterable, entries, fn, that, ITERATOR) { + var iterFn = ITERATOR ? function () { return iterable; } : getIterFn(iterable); + var f = ctx(fn, that, entries ? 2 : 1); + var index = 0; + var length, step, iterator, result; + if (typeof iterFn != 'function') throw TypeError(iterable + ' is not iterable!'); + // fast case for arrays with default iterator + if (isArrayIter(iterFn)) for (length = toLength(iterable.length); length > index; index++) { + result = entries ? f(anObject(step = iterable[index])[0], step[1]) : f(iterable[index]); + if (result === BREAK || result === RETURN) return result; + } else for (iterator = iterFn.call(iterable); !(step = iterator.next()).done;) { + result = call(iterator, f, step.value, entries); + if (result === BREAK || result === RETURN) return result; + } +}; +exports.BREAK = BREAK; +exports.RETURN = RETURN; + +},{"./_an-object":160,"./_ctx":170,"./_is-array-iter":184,"./_iter-call":187,"./_to-length":211,"./core.get-iterator-method":217}],178:[function(require,module,exports){ +// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028 +var global = module.exports = typeof window != 'undefined' && window.Math == Math + ? window : typeof self != 'undefined' && self.Math == Math ? self + // eslint-disable-next-line no-new-func + : Function('return this')(); +if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef + +},{}],179:[function(require,module,exports){ +var hasOwnProperty = {}.hasOwnProperty; +module.exports = function (it, key) { + return hasOwnProperty.call(it, key); +}; + +},{}],180:[function(require,module,exports){ +var dP = require('./_object-dp'); +var createDesc = require('./_property-desc'); +module.exports = require('./_descriptors') ? function (object, key, value) { + return dP.f(object, key, createDesc(1, value)); +} : function (object, key, value) { + object[key] = value; + return object; +}; + +},{"./_descriptors":172,"./_object-dp":195,"./_property-desc":200}],181:[function(require,module,exports){ +var document = require('./_global').document; +module.exports = document && document.documentElement; + +},{"./_global":178}],182:[function(require,module,exports){ +module.exports = !require('./_descriptors') && !require('./_fails')(function () { + return Object.defineProperty(require('./_dom-create')('div'), 'a', { get: function () { return 7; } }).a != 7; +}); + +},{"./_descriptors":172,"./_dom-create":173,"./_fails":176}],183:[function(require,module,exports){ +// fallback for non-array-like ES3 and non-enumerable old V8 strings +var cof = require('./_cof'); +// eslint-disable-next-line no-prototype-builtins +module.exports = Object('z').propertyIsEnumerable(0) ? Object : function (it) { + return cof(it) == 'String' ? it.split('') : Object(it); +}; + +},{"./_cof":166}],184:[function(require,module,exports){ +// check on default Array iterator +var Iterators = require('./_iterators'); +var ITERATOR = require('./_wks')('iterator'); +var ArrayProto = Array.prototype; + +module.exports = function (it) { + return it !== undefined && (Iterators.Array === it || ArrayProto[ITERATOR] === it); +}; + +},{"./_iterators":191,"./_wks":216}],185:[function(require,module,exports){ +// 7.2.2 IsArray(argument) +var cof = require('./_cof'); +module.exports = Array.isArray || function isArray(arg) { + return cof(arg) == 'Array'; +}; + +},{"./_cof":166}],186:[function(require,module,exports){ +module.exports = function (it) { + return typeof it === 'object' ? it !== null : typeof it === 'function'; +}; + +},{}],187:[function(require,module,exports){ +// call something on iterator step with safe closing on error +var anObject = require('./_an-object'); +module.exports = function (iterator, fn, value, entries) { + try { + return entries ? fn(anObject(value)[0], value[1]) : fn(value); + // 7.4.6 IteratorClose(iterator, completion) + } catch (e) { + var ret = iterator['return']; + if (ret !== undefined) anObject(ret.call(iterator)); + throw e; + } +}; + +},{"./_an-object":160}],188:[function(require,module,exports){ +'use strict'; +var create = require('./_object-create'); +var descriptor = require('./_property-desc'); +var setToStringTag = require('./_set-to-string-tag'); +var IteratorPrototype = {}; + +// 25.1.2.1.1 %IteratorPrototype%[@@iterator]() +require('./_hide')(IteratorPrototype, require('./_wks')('iterator'), function () { return this; }); + +module.exports = function (Constructor, NAME, next) { + Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) }); + setToStringTag(Constructor, NAME + ' Iterator'); +}; + +},{"./_hide":180,"./_object-create":194,"./_property-desc":200,"./_set-to-string-tag":204,"./_wks":216}],189:[function(require,module,exports){ +'use strict'; +var LIBRARY = require('./_library'); +var $export = require('./_export'); +var redefine = require('./_redefine'); +var hide = require('./_hide'); +var Iterators = require('./_iterators'); +var $iterCreate = require('./_iter-create'); +var setToStringTag = require('./_set-to-string-tag'); +var getPrototypeOf = require('./_object-gpo'); +var ITERATOR = require('./_wks')('iterator'); +var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next` +var FF_ITERATOR = '@@iterator'; +var KEYS = 'keys'; +var VALUES = 'values'; + +var returnThis = function () { return this; }; + +module.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) { + $iterCreate(Constructor, NAME, next); + var getMethod = function (kind) { + if (!BUGGY && kind in proto) return proto[kind]; + switch (kind) { + case KEYS: return function keys() { return new Constructor(this, kind); }; + case VALUES: return function values() { return new Constructor(this, kind); }; + } return function entries() { return new Constructor(this, kind); }; + }; + var TAG = NAME + ' Iterator'; + var DEF_VALUES = DEFAULT == VALUES; + var VALUES_BUG = false; + var proto = Base.prototype; + var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT]; + var $default = $native || getMethod(DEFAULT); + var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined; + var $anyNative = NAME == 'Array' ? proto.entries || $native : $native; + var methods, key, IteratorPrototype; + // Fix native + if ($anyNative) { + IteratorPrototype = getPrototypeOf($anyNative.call(new Base())); + if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) { + // Set @@toStringTag to native iterators + setToStringTag(IteratorPrototype, TAG, true); + // fix for some old engines + if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') hide(IteratorPrototype, ITERATOR, returnThis); + } + } + // fix Array#{values, @@iterator}.name in V8 / FF + if (DEF_VALUES && $native && $native.name !== VALUES) { + VALUES_BUG = true; + $default = function values() { return $native.call(this); }; + } + // Define iterator + if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) { + hide(proto, ITERATOR, $default); + } + // Plug for library + Iterators[NAME] = $default; + Iterators[TAG] = returnThis; + if (DEFAULT) { + methods = { + values: DEF_VALUES ? $default : getMethod(VALUES), + keys: IS_SET ? $default : getMethod(KEYS), + entries: $entries + }; + if (FORCED) for (key in methods) { + if (!(key in proto)) redefine(proto, key, methods[key]); + } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods); + } + return methods; +}; + +},{"./_export":175,"./_hide":180,"./_iter-create":188,"./_iterators":191,"./_library":192,"./_object-gpo":197,"./_redefine":202,"./_set-to-string-tag":204,"./_wks":216}],190:[function(require,module,exports){ +module.exports = function (done, value) { + return { value: value, done: !!done }; +}; + +},{}],191:[function(require,module,exports){ +module.exports = {}; + +},{}],192:[function(require,module,exports){ +module.exports = true; + +},{}],193:[function(require,module,exports){ +var META = require('./_uid')('meta'); +var isObject = require('./_is-object'); +var has = require('./_has'); +var setDesc = require('./_object-dp').f; +var id = 0; +var isExtensible = Object.isExtensible || function () { + return true; +}; +var FREEZE = !require('./_fails')(function () { + return isExtensible(Object.preventExtensions({})); +}); +var setMeta = function (it) { + setDesc(it, META, { value: { + i: 'O' + ++id, // object ID + w: {} // weak collections IDs + } }); +}; +var fastKey = function (it, create) { + // return primitive with prefix + if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it; + if (!has(it, META)) { + // can't set metadata to uncaught frozen object + if (!isExtensible(it)) return 'F'; + // not necessary to add metadata + if (!create) return 'E'; + // add missing metadata + setMeta(it); + // return object ID + } return it[META].i; +}; +var getWeak = function (it, create) { + if (!has(it, META)) { + // can't set metadata to uncaught frozen object + if (!isExtensible(it)) return true; + // not necessary to add metadata + if (!create) return false; + // add missing metadata + setMeta(it); + // return hash weak collections IDs + } return it[META].w; +}; +// add metadata on freeze-family methods calling +var onFreeze = function (it) { + if (FREEZE && meta.NEED && isExtensible(it) && !has(it, META)) setMeta(it); + return it; +}; +var meta = module.exports = { + KEY: META, + NEED: false, + fastKey: fastKey, + getWeak: getWeak, + onFreeze: onFreeze +}; + +},{"./_fails":176,"./_has":179,"./_is-object":186,"./_object-dp":195,"./_uid":214}],194:[function(require,module,exports){ +// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties]) +var anObject = require('./_an-object'); +var dPs = require('./_object-dps'); +var enumBugKeys = require('./_enum-bug-keys'); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); +var Empty = function () { /* empty */ }; +var PROTOTYPE = 'prototype'; + +// Create object with fake `null` prototype: use iframe Object with cleared prototype +var createDict = function () { + // Thrash, waste and sodomy: IE GC bug + var iframe = require('./_dom-create')('iframe'); + var i = enumBugKeys.length; + var lt = '<'; + var gt = '>'; + var iframeDocument; + iframe.style.display = 'none'; + require('./_html').appendChild(iframe); + iframe.src = 'javascript:'; // eslint-disable-line no-script-url + // createDict = iframe.contentWindow.Object; + // html.removeChild(iframe); + iframeDocument = iframe.contentWindow.document; + iframeDocument.open(); + iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt); + iframeDocument.close(); + createDict = iframeDocument.F; + while (i--) delete createDict[PROTOTYPE][enumBugKeys[i]]; + return createDict(); +}; + +module.exports = Object.create || function create(O, Properties) { + var result; + if (O !== null) { + Empty[PROTOTYPE] = anObject(O); + result = new Empty(); + Empty[PROTOTYPE] = null; + // add "__proto__" for Object.getPrototypeOf polyfill + result[IE_PROTO] = O; + } else result = createDict(); + return Properties === undefined ? result : dPs(result, Properties); +}; + +},{"./_an-object":160,"./_dom-create":173,"./_enum-bug-keys":174,"./_html":181,"./_object-dps":196,"./_shared-key":205}],195:[function(require,module,exports){ +var anObject = require('./_an-object'); +var IE8_DOM_DEFINE = require('./_ie8-dom-define'); +var toPrimitive = require('./_to-primitive'); +var dP = Object.defineProperty; + +exports.f = require('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes) { + anObject(O); + P = toPrimitive(P, true); + anObject(Attributes); + if (IE8_DOM_DEFINE) try { + return dP(O, P, Attributes); + } catch (e) { /* empty */ } + if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!'); + if ('value' in Attributes) O[P] = Attributes.value; + return O; +}; + +},{"./_an-object":160,"./_descriptors":172,"./_ie8-dom-define":182,"./_to-primitive":213}],196:[function(require,module,exports){ +var dP = require('./_object-dp'); +var anObject = require('./_an-object'); +var getKeys = require('./_object-keys'); + +module.exports = require('./_descriptors') ? Object.defineProperties : function defineProperties(O, Properties) { + anObject(O); + var keys = getKeys(Properties); + var length = keys.length; + var i = 0; + var P; + while (length > i) dP.f(O, P = keys[i++], Properties[P]); + return O; +}; + +},{"./_an-object":160,"./_descriptors":172,"./_object-dp":195,"./_object-keys":199}],197:[function(require,module,exports){ +// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O) +var has = require('./_has'); +var toObject = require('./_to-object'); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); +var ObjectProto = Object.prototype; + +module.exports = Object.getPrototypeOf || function (O) { + O = toObject(O); + if (has(O, IE_PROTO)) return O[IE_PROTO]; + if (typeof O.constructor == 'function' && O instanceof O.constructor) { + return O.constructor.prototype; + } return O instanceof Object ? ObjectProto : null; +}; + +},{"./_has":179,"./_shared-key":205,"./_to-object":212}],198:[function(require,module,exports){ +var has = require('./_has'); +var toIObject = require('./_to-iobject'); +var arrayIndexOf = require('./_array-includes')(false); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); + +module.exports = function (object, names) { + var O = toIObject(object); + var i = 0; + var result = []; + var key; + for (key in O) if (key != IE_PROTO) has(O, key) && result.push(key); + // Don't enum bug & hidden keys + while (names.length > i) if (has(O, key = names[i++])) { + ~arrayIndexOf(result, key) || result.push(key); + } + return result; +}; + +},{"./_array-includes":161,"./_has":179,"./_shared-key":205,"./_to-iobject":210}],199:[function(require,module,exports){ +// 19.1.2.14 / 15.2.3.14 Object.keys(O) +var $keys = require('./_object-keys-internal'); +var enumBugKeys = require('./_enum-bug-keys'); + +module.exports = Object.keys || function keys(O) { + return $keys(O, enumBugKeys); +}; + +},{"./_enum-bug-keys":174,"./_object-keys-internal":198}],200:[function(require,module,exports){ +module.exports = function (bitmap, value) { + return { + enumerable: !(bitmap & 1), + configurable: !(bitmap & 2), + writable: !(bitmap & 4), + value: value + }; +}; + +},{}],201:[function(require,module,exports){ +var hide = require('./_hide'); +module.exports = function (target, src, safe) { + for (var key in src) { + if (safe && target[key]) target[key] = src[key]; + else hide(target, key, src[key]); + } return target; +}; + +},{"./_hide":180}],202:[function(require,module,exports){ +module.exports = require('./_hide'); + +},{"./_hide":180}],203:[function(require,module,exports){ +'use strict'; +var global = require('./_global'); +var core = require('./_core'); +var dP = require('./_object-dp'); +var DESCRIPTORS = require('./_descriptors'); +var SPECIES = require('./_wks')('species'); + +module.exports = function (KEY) { + var C = typeof core[KEY] == 'function' ? core[KEY] : global[KEY]; + if (DESCRIPTORS && C && !C[SPECIES]) dP.f(C, SPECIES, { + configurable: true, + get: function () { return this; } + }); +}; + +},{"./_core":169,"./_descriptors":172,"./_global":178,"./_object-dp":195,"./_wks":216}],204:[function(require,module,exports){ +var def = require('./_object-dp').f; +var has = require('./_has'); +var TAG = require('./_wks')('toStringTag'); + +module.exports = function (it, tag, stat) { + if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag }); +}; + +},{"./_has":179,"./_object-dp":195,"./_wks":216}],205:[function(require,module,exports){ +var shared = require('./_shared')('keys'); +var uid = require('./_uid'); +module.exports = function (key) { + return shared[key] || (shared[key] = uid(key)); +}; + +},{"./_shared":206,"./_uid":214}],206:[function(require,module,exports){ +var core = require('./_core'); +var global = require('./_global'); +var SHARED = '__core-js_shared__'; +var store = global[SHARED] || (global[SHARED] = {}); + +(module.exports = function (key, value) { + return store[key] || (store[key] = value !== undefined ? value : {}); +})('versions', []).push({ + version: core.version, + mode: require('./_library') ? 'pure' : 'global', + copyright: '© 2019 Denis Pushkarev (zloirock.ru)' +}); + +},{"./_core":169,"./_global":178,"./_library":192}],207:[function(require,module,exports){ +var toInteger = require('./_to-integer'); +var defined = require('./_defined'); +// true -> String#at +// false -> String#codePointAt +module.exports = function (TO_STRING) { + return function (that, pos) { + var s = String(defined(that)); + var i = toInteger(pos); + var l = s.length; + var a, b; + if (i < 0 || i >= l) return TO_STRING ? '' : undefined; + a = s.charCodeAt(i); + return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff + ? TO_STRING ? s.charAt(i) : a + : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000; + }; +}; + +},{"./_defined":171,"./_to-integer":209}],208:[function(require,module,exports){ +var toInteger = require('./_to-integer'); +var max = Math.max; +var min = Math.min; +module.exports = function (index, length) { + index = toInteger(index); + return index < 0 ? max(index + length, 0) : min(index, length); +}; + +},{"./_to-integer":209}],209:[function(require,module,exports){ +// 7.1.4 ToInteger +var ceil = Math.ceil; +var floor = Math.floor; +module.exports = function (it) { + return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it); +}; + +},{}],210:[function(require,module,exports){ +// to indexed object, toObject with fallback for non-array-like ES3 strings +var IObject = require('./_iobject'); +var defined = require('./_defined'); +module.exports = function (it) { + return IObject(defined(it)); +}; + +},{"./_defined":171,"./_iobject":183}],211:[function(require,module,exports){ +// 7.1.15 ToLength +var toInteger = require('./_to-integer'); +var min = Math.min; +module.exports = function (it) { + return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991 +}; + +},{"./_to-integer":209}],212:[function(require,module,exports){ +// 7.1.13 ToObject(argument) +var defined = require('./_defined'); +module.exports = function (it) { + return Object(defined(it)); +}; + +},{"./_defined":171}],213:[function(require,module,exports){ +// 7.1.1 ToPrimitive(input [, PreferredType]) +var isObject = require('./_is-object'); +// instead of the ES6 spec version, we didn't implement @@toPrimitive case +// and the second argument - flag - preferred type is a string +module.exports = function (it, S) { + if (!isObject(it)) return it; + var fn, val; + if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val; + if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + throw TypeError("Can't convert object to primitive value"); +}; + +},{"./_is-object":186}],214:[function(require,module,exports){ +var id = 0; +var px = Math.random(); +module.exports = function (key) { + return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36)); +}; + +},{}],215:[function(require,module,exports){ +var isObject = require('./_is-object'); +module.exports = function (it, TYPE) { + if (!isObject(it) || it._t !== TYPE) throw TypeError('Incompatible receiver, ' + TYPE + ' required!'); + return it; +}; + +},{"./_is-object":186}],216:[function(require,module,exports){ +var store = require('./_shared')('wks'); +var uid = require('./_uid'); +var Symbol = require('./_global').Symbol; +var USE_SYMBOL = typeof Symbol == 'function'; + +var $exports = module.exports = function (name) { + return store[name] || (store[name] = + USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name)); +}; + +$exports.store = store; + +},{"./_global":178,"./_shared":206,"./_uid":214}],217:[function(require,module,exports){ +var classof = require('./_classof'); +var ITERATOR = require('./_wks')('iterator'); +var Iterators = require('./_iterators'); +module.exports = require('./_core').getIteratorMethod = function (it) { + if (it != undefined) return it[ITERATOR] + || it['@@iterator'] + || Iterators[classof(it)]; +}; + +},{"./_classof":165,"./_core":169,"./_iterators":191,"./_wks":216}],218:[function(require,module,exports){ +'use strict'; +var addToUnscopables = require('./_add-to-unscopables'); +var step = require('./_iter-step'); +var Iterators = require('./_iterators'); +var toIObject = require('./_to-iobject'); + +// 22.1.3.4 Array.prototype.entries() +// 22.1.3.13 Array.prototype.keys() +// 22.1.3.29 Array.prototype.values() +// 22.1.3.30 Array.prototype[@@iterator]() +module.exports = require('./_iter-define')(Array, 'Array', function (iterated, kind) { + this._t = toIObject(iterated); // target + this._i = 0; // next index + this._k = kind; // kind +// 22.1.5.2.1 %ArrayIteratorPrototype%.next() +}, function () { + var O = this._t; + var kind = this._k; + var index = this._i++; + if (!O || index >= O.length) { + this._t = undefined; + return step(1); + } + if (kind == 'keys') return step(0, index); + if (kind == 'values') return step(0, O[index]); + return step(0, [index, O[index]]); +}, 'values'); + +// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7) +Iterators.Arguments = Iterators.Array; + +addToUnscopables('keys'); +addToUnscopables('values'); +addToUnscopables('entries'); + +},{"./_add-to-unscopables":158,"./_iter-define":189,"./_iter-step":190,"./_iterators":191,"./_to-iobject":210}],219:[function(require,module,exports){ +'use strict'; +var strong = require('./_collection-strong'); +var validate = require('./_validate-collection'); +var MAP = 'Map'; + +// 23.1 Map Objects +module.exports = require('./_collection')(MAP, function (get) { + return function Map() { return get(this, arguments.length > 0 ? arguments[0] : undefined); }; +}, { + // 23.1.3.6 Map.prototype.get(key) + get: function get(key) { + var entry = strong.getEntry(validate(this, MAP), key); + return entry && entry.v; + }, + // 23.1.3.9 Map.prototype.set(key, value) + set: function set(key, value) { + return strong.def(validate(this, MAP), key === 0 ? 0 : key, value); + } +}, strong, true); + +},{"./_collection":168,"./_collection-strong":167,"./_validate-collection":215}],220:[function(require,module,exports){ +arguments[4][110][0].apply(exports,arguments) +},{"dup":110}],221:[function(require,module,exports){ +'use strict'; +var $at = require('./_string-at')(true); + +// 21.1.3.27 String.prototype[@@iterator]() +require('./_iter-define')(String, 'String', function (iterated) { + this._t = String(iterated); // target + this._i = 0; // next index +// 21.1.5.2.1 %StringIteratorPrototype%.next() +}, function () { + var O = this._t; + var index = this._i; + var point; + if (index >= O.length) return { value: undefined, done: true }; + point = $at(O, index); + this._i += point.length; + return { value: point, done: false }; +}); + +},{"./_iter-define":189,"./_string-at":207}],222:[function(require,module,exports){ +require('./es6.array.iterator'); +var global = require('./_global'); +var hide = require('./_hide'); +var Iterators = require('./_iterators'); +var TO_STRING_TAG = require('./_wks')('toStringTag'); + +var DOMIterables = ('CSSRuleList,CSSStyleDeclaration,CSSValueList,ClientRectList,DOMRectList,DOMStringList,' + + 'DOMTokenList,DataTransferItemList,FileList,HTMLAllCollection,HTMLCollection,HTMLFormElement,HTMLSelectElement,' + + 'MediaList,MimeTypeArray,NamedNodeMap,NodeList,PaintRequestList,Plugin,PluginArray,SVGLengthList,SVGNumberList,' + + 'SVGPathSegList,SVGPointList,SVGStringList,SVGTransformList,SourceBufferList,StyleSheetList,TextTrackCueList,' + + 'TextTrackList,TouchList').split(','); + +for (var i = 0; i < DOMIterables.length; i++) { + var NAME = DOMIterables[i]; + var Collection = global[NAME]; + var proto = Collection && Collection.prototype; + if (proto && !proto[TO_STRING_TAG]) hide(proto, TO_STRING_TAG, NAME); + Iterators[NAME] = Iterators.Array; +} + +},{"./_global":178,"./_hide":180,"./_iterators":191,"./_wks":216,"./es6.array.iterator":218}],223:[function(require,module,exports){ +(function (Buffer){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. + +function isArray(arg) { + if (Array.isArray) { + return Array.isArray(arg); + } + return objectToString(arg) === '[object Array]'; +} +exports.isArray = isArray; + +function isBoolean(arg) { + return typeof arg === 'boolean'; +} +exports.isBoolean = isBoolean; + +function isNull(arg) { + return arg === null; +} +exports.isNull = isNull; + +function isNullOrUndefined(arg) { + return arg == null; +} +exports.isNullOrUndefined = isNullOrUndefined; + +function isNumber(arg) { + return typeof arg === 'number'; +} +exports.isNumber = isNumber; + +function isString(arg) { + return typeof arg === 'string'; +} +exports.isString = isString; + +function isSymbol(arg) { + return typeof arg === 'symbol'; +} +exports.isSymbol = isSymbol; + +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; + +function isRegExp(re) { + return objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; + +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; + +function isDate(d) { + return objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; + +function isError(e) { + return (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; + +function isFunction(arg) { + return typeof arg === 'function'; +} +exports.isFunction = isFunction; + +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; +} +exports.isPrimitive = isPrimitive; + +exports.isBuffer = Buffer.isBuffer; + +function objectToString(o) { + return Object.prototype.toString.call(o); +} + +}).call(this,{"isBuffer":require("../../insert-module-globals/node_modules/is-buffer/index.js")}) +},{"../../insert-module-globals/node_modules/is-buffer/index.js":397}],224:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +module.exports = (0, _define_crc2.default)('crc1', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = ~~previous; + var accum = 0; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + accum += byte; + } + + crc += accum % 256; + return crc % 256; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],225:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=crc-16 --generate=c` +var TABLE = [0x0000, 0xc0c1, 0xc181, 0x0140, 0xc301, 0x03c0, 0x0280, 0xc241, 0xc601, 0x06c0, 0x0780, 0xc741, 0x0500, 0xc5c1, 0xc481, 0x0440, 0xcc01, 0x0cc0, 0x0d80, 0xcd41, 0x0f00, 0xcfc1, 0xce81, 0x0e40, 0x0a00, 0xcac1, 0xcb81, 0x0b40, 0xc901, 0x09c0, 0x0880, 0xc841, 0xd801, 0x18c0, 0x1980, 0xd941, 0x1b00, 0xdbc1, 0xda81, 0x1a40, 0x1e00, 0xdec1, 0xdf81, 0x1f40, 0xdd01, 0x1dc0, 0x1c80, 0xdc41, 0x1400, 0xd4c1, 0xd581, 0x1540, 0xd701, 0x17c0, 0x1680, 0xd641, 0xd201, 0x12c0, 0x1380, 0xd341, 0x1100, 0xd1c1, 0xd081, 0x1040, 0xf001, 0x30c0, 0x3180, 0xf141, 0x3300, 0xf3c1, 0xf281, 0x3240, 0x3600, 0xf6c1, 0xf781, 0x3740, 0xf501, 0x35c0, 0x3480, 0xf441, 0x3c00, 0xfcc1, 0xfd81, 0x3d40, 0xff01, 0x3fc0, 0x3e80, 0xfe41, 0xfa01, 0x3ac0, 0x3b80, 0xfb41, 0x3900, 0xf9c1, 0xf881, 0x3840, 0x2800, 0xe8c1, 0xe981, 0x2940, 0xeb01, 0x2bc0, 0x2a80, 0xea41, 0xee01, 0x2ec0, 0x2f80, 0xef41, 0x2d00, 0xedc1, 0xec81, 0x2c40, 0xe401, 0x24c0, 0x2580, 0xe541, 0x2700, 0xe7c1, 0xe681, 0x2640, 0x2200, 0xe2c1, 0xe381, 0x2340, 0xe101, 0x21c0, 0x2080, 0xe041, 0xa001, 0x60c0, 0x6180, 0xa141, 0x6300, 0xa3c1, 0xa281, 0x6240, 0x6600, 0xa6c1, 0xa781, 0x6740, 0xa501, 0x65c0, 0x6480, 0xa441, 0x6c00, 0xacc1, 0xad81, 0x6d40, 0xaf01, 0x6fc0, 0x6e80, 0xae41, 0xaa01, 0x6ac0, 0x6b80, 0xab41, 0x6900, 0xa9c1, 0xa881, 0x6840, 0x7800, 0xb8c1, 0xb981, 0x7940, 0xbb01, 0x7bc0, 0x7a80, 0xba41, 0xbe01, 0x7ec0, 0x7f80, 0xbf41, 0x7d00, 0xbdc1, 0xbc81, 0x7c40, 0xb401, 0x74c0, 0x7580, 0xb541, 0x7700, 0xb7c1, 0xb681, 0x7640, 0x7200, 0xb2c1, 0xb381, 0x7340, 0xb101, 0x71c0, 0x7080, 0xb041, 0x5000, 0x90c1, 0x9181, 0x5140, 0x9301, 0x53c0, 0x5280, 0x9241, 0x9601, 0x56c0, 0x5780, 0x9741, 0x5500, 0x95c1, 0x9481, 0x5440, 0x9c01, 0x5cc0, 0x5d80, 0x9d41, 0x5f00, 0x9fc1, 0x9e81, 0x5e40, 0x5a00, 0x9ac1, 0x9b81, 0x5b40, 0x9901, 0x59c0, 0x5880, 0x9841, 0x8801, 0x48c0, 0x4980, 0x8941, 0x4b00, 0x8bc1, 0x8a81, 0x4a40, 0x4e00, 0x8ec1, 0x8f81, 0x4f40, 0x8d01, 0x4dc0, 0x4c80, 0x8c41, 0x4400, 0x84c1, 0x8581, 0x4540, 0x8701, 0x47c0, 0x4680, 0x8641, 0x8201, 0x42c0, 0x4380, 0x8341, 0x4100, 0x81c1, 0x8081, 0x4040]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('crc-16', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = ~~previous; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = (TABLE[(crc ^ byte) & 0xff] ^ crc >> 8) & 0xffff; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],226:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=ccitt --generate=c` +var TABLE = [0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('ccitt', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = typeof previous !== 'undefined' ? ~~previous : 0xffff; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = (TABLE[(crc >> 8 ^ byte) & 0xff] ^ crc << 8) & 0xffff; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],227:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=kermit --generate=c` +var TABLE = [0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('kermit', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = typeof previous !== 'undefined' ? ~~previous : 0x0000; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = (TABLE[(crc ^ byte) & 0xff] ^ crc >> 8) & 0xffff; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],228:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=crc-16-modbus --generate=c` +var TABLE = [0x0000, 0xc0c1, 0xc181, 0x0140, 0xc301, 0x03c0, 0x0280, 0xc241, 0xc601, 0x06c0, 0x0780, 0xc741, 0x0500, 0xc5c1, 0xc481, 0x0440, 0xcc01, 0x0cc0, 0x0d80, 0xcd41, 0x0f00, 0xcfc1, 0xce81, 0x0e40, 0x0a00, 0xcac1, 0xcb81, 0x0b40, 0xc901, 0x09c0, 0x0880, 0xc841, 0xd801, 0x18c0, 0x1980, 0xd941, 0x1b00, 0xdbc1, 0xda81, 0x1a40, 0x1e00, 0xdec1, 0xdf81, 0x1f40, 0xdd01, 0x1dc0, 0x1c80, 0xdc41, 0x1400, 0xd4c1, 0xd581, 0x1540, 0xd701, 0x17c0, 0x1680, 0xd641, 0xd201, 0x12c0, 0x1380, 0xd341, 0x1100, 0xd1c1, 0xd081, 0x1040, 0xf001, 0x30c0, 0x3180, 0xf141, 0x3300, 0xf3c1, 0xf281, 0x3240, 0x3600, 0xf6c1, 0xf781, 0x3740, 0xf501, 0x35c0, 0x3480, 0xf441, 0x3c00, 0xfcc1, 0xfd81, 0x3d40, 0xff01, 0x3fc0, 0x3e80, 0xfe41, 0xfa01, 0x3ac0, 0x3b80, 0xfb41, 0x3900, 0xf9c1, 0xf881, 0x3840, 0x2800, 0xe8c1, 0xe981, 0x2940, 0xeb01, 0x2bc0, 0x2a80, 0xea41, 0xee01, 0x2ec0, 0x2f80, 0xef41, 0x2d00, 0xedc1, 0xec81, 0x2c40, 0xe401, 0x24c0, 0x2580, 0xe541, 0x2700, 0xe7c1, 0xe681, 0x2640, 0x2200, 0xe2c1, 0xe381, 0x2340, 0xe101, 0x21c0, 0x2080, 0xe041, 0xa001, 0x60c0, 0x6180, 0xa141, 0x6300, 0xa3c1, 0xa281, 0x6240, 0x6600, 0xa6c1, 0xa781, 0x6740, 0xa501, 0x65c0, 0x6480, 0xa441, 0x6c00, 0xacc1, 0xad81, 0x6d40, 0xaf01, 0x6fc0, 0x6e80, 0xae41, 0xaa01, 0x6ac0, 0x6b80, 0xab41, 0x6900, 0xa9c1, 0xa881, 0x6840, 0x7800, 0xb8c1, 0xb981, 0x7940, 0xbb01, 0x7bc0, 0x7a80, 0xba41, 0xbe01, 0x7ec0, 0x7f80, 0xbf41, 0x7d00, 0xbdc1, 0xbc81, 0x7c40, 0xb401, 0x74c0, 0x7580, 0xb541, 0x7700, 0xb7c1, 0xb681, 0x7640, 0x7200, 0xb2c1, 0xb381, 0x7340, 0xb101, 0x71c0, 0x7080, 0xb041, 0x5000, 0x90c1, 0x9181, 0x5140, 0x9301, 0x53c0, 0x5280, 0x9241, 0x9601, 0x56c0, 0x5780, 0x9741, 0x5500, 0x95c1, 0x9481, 0x5440, 0x9c01, 0x5cc0, 0x5d80, 0x9d41, 0x5f00, 0x9fc1, 0x9e81, 0x5e40, 0x5a00, 0x9ac1, 0x9b81, 0x5b40, 0x9901, 0x59c0, 0x5880, 0x9841, 0x8801, 0x48c0, 0x4980, 0x8941, 0x4b00, 0x8bc1, 0x8a81, 0x4a40, 0x4e00, 0x8ec1, 0x8f81, 0x4f40, 0x8d01, 0x4dc0, 0x4c80, 0x8c41, 0x4400, 0x84c1, 0x8581, 0x4540, 0x8701, 0x47c0, 0x4680, 0x8641, 0x8201, 0x42c0, 0x4380, 0x8341, 0x4100, 0x81c1, 0x8081, 0x4040]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('crc-16-modbus', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = typeof previous !== 'undefined' ? ~~previous : 0xffff; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = (TABLE[(crc ^ byte) & 0xff] ^ crc >> 8) & 0xffff; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],229:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +module.exports = (0, _define_crc2.default)('xmodem', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = typeof previous !== 'undefined' ? ~~previous : 0x0; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + var code = crc >>> 8 & 0xFF; + + code ^= byte & 0xFF; + code ^= code >>> 4; + crc = crc << 8 & 0xFFFF; + crc ^= code; + code = code << 5 & 0xFFFF; + crc ^= code; + code = code << 7 & 0xFFFF; + crc ^= code; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],230:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-drive --model=crc-24 --generate=c` +var TABLE = [0x000000, 0x864cfb, 0x8ad50d, 0x0c99f6, 0x93e6e1, 0x15aa1a, 0x1933ec, 0x9f7f17, 0xa18139, 0x27cdc2, 0x2b5434, 0xad18cf, 0x3267d8, 0xb42b23, 0xb8b2d5, 0x3efe2e, 0xc54e89, 0x430272, 0x4f9b84, 0xc9d77f, 0x56a868, 0xd0e493, 0xdc7d65, 0x5a319e, 0x64cfb0, 0xe2834b, 0xee1abd, 0x685646, 0xf72951, 0x7165aa, 0x7dfc5c, 0xfbb0a7, 0x0cd1e9, 0x8a9d12, 0x8604e4, 0x00481f, 0x9f3708, 0x197bf3, 0x15e205, 0x93aefe, 0xad50d0, 0x2b1c2b, 0x2785dd, 0xa1c926, 0x3eb631, 0xb8faca, 0xb4633c, 0x322fc7, 0xc99f60, 0x4fd39b, 0x434a6d, 0xc50696, 0x5a7981, 0xdc357a, 0xd0ac8c, 0x56e077, 0x681e59, 0xee52a2, 0xe2cb54, 0x6487af, 0xfbf8b8, 0x7db443, 0x712db5, 0xf7614e, 0x19a3d2, 0x9fef29, 0x9376df, 0x153a24, 0x8a4533, 0x0c09c8, 0x00903e, 0x86dcc5, 0xb822eb, 0x3e6e10, 0x32f7e6, 0xb4bb1d, 0x2bc40a, 0xad88f1, 0xa11107, 0x275dfc, 0xdced5b, 0x5aa1a0, 0x563856, 0xd074ad, 0x4f0bba, 0xc94741, 0xc5deb7, 0x43924c, 0x7d6c62, 0xfb2099, 0xf7b96f, 0x71f594, 0xee8a83, 0x68c678, 0x645f8e, 0xe21375, 0x15723b, 0x933ec0, 0x9fa736, 0x19ebcd, 0x8694da, 0x00d821, 0x0c41d7, 0x8a0d2c, 0xb4f302, 0x32bff9, 0x3e260f, 0xb86af4, 0x2715e3, 0xa15918, 0xadc0ee, 0x2b8c15, 0xd03cb2, 0x567049, 0x5ae9bf, 0xdca544, 0x43da53, 0xc596a8, 0xc90f5e, 0x4f43a5, 0x71bd8b, 0xf7f170, 0xfb6886, 0x7d247d, 0xe25b6a, 0x641791, 0x688e67, 0xeec29c, 0x3347a4, 0xb50b5f, 0xb992a9, 0x3fde52, 0xa0a145, 0x26edbe, 0x2a7448, 0xac38b3, 0x92c69d, 0x148a66, 0x181390, 0x9e5f6b, 0x01207c, 0x876c87, 0x8bf571, 0x0db98a, 0xf6092d, 0x7045d6, 0x7cdc20, 0xfa90db, 0x65efcc, 0xe3a337, 0xef3ac1, 0x69763a, 0x578814, 0xd1c4ef, 0xdd5d19, 0x5b11e2, 0xc46ef5, 0x42220e, 0x4ebbf8, 0xc8f703, 0x3f964d, 0xb9dab6, 0xb54340, 0x330fbb, 0xac70ac, 0x2a3c57, 0x26a5a1, 0xa0e95a, 0x9e1774, 0x185b8f, 0x14c279, 0x928e82, 0x0df195, 0x8bbd6e, 0x872498, 0x016863, 0xfad8c4, 0x7c943f, 0x700dc9, 0xf64132, 0x693e25, 0xef72de, 0xe3eb28, 0x65a7d3, 0x5b59fd, 0xdd1506, 0xd18cf0, 0x57c00b, 0xc8bf1c, 0x4ef3e7, 0x426a11, 0xc426ea, 0x2ae476, 0xaca88d, 0xa0317b, 0x267d80, 0xb90297, 0x3f4e6c, 0x33d79a, 0xb59b61, 0x8b654f, 0x0d29b4, 0x01b042, 0x87fcb9, 0x1883ae, 0x9ecf55, 0x9256a3, 0x141a58, 0xefaaff, 0x69e604, 0x657ff2, 0xe33309, 0x7c4c1e, 0xfa00e5, 0xf69913, 0x70d5e8, 0x4e2bc6, 0xc8673d, 0xc4fecb, 0x42b230, 0xddcd27, 0x5b81dc, 0x57182a, 0xd154d1, 0x26359f, 0xa07964, 0xace092, 0x2aac69, 0xb5d37e, 0x339f85, 0x3f0673, 0xb94a88, 0x87b4a6, 0x01f85d, 0x0d61ab, 0x8b2d50, 0x145247, 0x921ebc, 0x9e874a, 0x18cbb1, 0xe37b16, 0x6537ed, 0x69ae1b, 0xefe2e0, 0x709df7, 0xf6d10c, 0xfa48fa, 0x7c0401, 0x42fa2f, 0xc4b6d4, 0xc82f22, 0x4e63d9, 0xd11cce, 0x575035, 0x5bc9c3, 0xdd8538]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('crc-24', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = typeof previous !== 'undefined' ? ~~previous : 0xb704ce; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = (TABLE[(crc >> 16 ^ byte) & 0xff] ^ crc << 8) & 0xffffff; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],231:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=crc-32 --generate=c` +var TABLE = [0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('crc-32', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = previous === 0 ? 0 : ~~previous ^ -1; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = TABLE[(crc ^ byte) & 0xff] ^ crc >>> 8; + } + + return crc ^ -1; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],232:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=crc-8 --generate=c` +var TABLE = [0x00, 0x07, 0x0e, 0x09, 0x1c, 0x1b, 0x12, 0x15, 0x38, 0x3f, 0x36, 0x31, 0x24, 0x23, 0x2a, 0x2d, 0x70, 0x77, 0x7e, 0x79, 0x6c, 0x6b, 0x62, 0x65, 0x48, 0x4f, 0x46, 0x41, 0x54, 0x53, 0x5a, 0x5d, 0xe0, 0xe7, 0xee, 0xe9, 0xfc, 0xfb, 0xf2, 0xf5, 0xd8, 0xdf, 0xd6, 0xd1, 0xc4, 0xc3, 0xca, 0xcd, 0x90, 0x97, 0x9e, 0x99, 0x8c, 0x8b, 0x82, 0x85, 0xa8, 0xaf, 0xa6, 0xa1, 0xb4, 0xb3, 0xba, 0xbd, 0xc7, 0xc0, 0xc9, 0xce, 0xdb, 0xdc, 0xd5, 0xd2, 0xff, 0xf8, 0xf1, 0xf6, 0xe3, 0xe4, 0xed, 0xea, 0xb7, 0xb0, 0xb9, 0xbe, 0xab, 0xac, 0xa5, 0xa2, 0x8f, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9d, 0x9a, 0x27, 0x20, 0x29, 0x2e, 0x3b, 0x3c, 0x35, 0x32, 0x1f, 0x18, 0x11, 0x16, 0x03, 0x04, 0x0d, 0x0a, 0x57, 0x50, 0x59, 0x5e, 0x4b, 0x4c, 0x45, 0x42, 0x6f, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7d, 0x7a, 0x89, 0x8e, 0x87, 0x80, 0x95, 0x92, 0x9b, 0x9c, 0xb1, 0xb6, 0xbf, 0xb8, 0xad, 0xaa, 0xa3, 0xa4, 0xf9, 0xfe, 0xf7, 0xf0, 0xe5, 0xe2, 0xeb, 0xec, 0xc1, 0xc6, 0xcf, 0xc8, 0xdd, 0xda, 0xd3, 0xd4, 0x69, 0x6e, 0x67, 0x60, 0x75, 0x72, 0x7b, 0x7c, 0x51, 0x56, 0x5f, 0x58, 0x4d, 0x4a, 0x43, 0x44, 0x19, 0x1e, 0x17, 0x10, 0x05, 0x02, 0x0b, 0x0c, 0x21, 0x26, 0x2f, 0x28, 0x3d, 0x3a, 0x33, 0x34, 0x4e, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5c, 0x5b, 0x76, 0x71, 0x78, 0x7f, 0x6a, 0x6d, 0x64, 0x63, 0x3e, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2c, 0x2b, 0x06, 0x01, 0x08, 0x0f, 0x1a, 0x1d, 0x14, 0x13, 0xae, 0xa9, 0xa0, 0xa7, 0xb2, 0xb5, 0xbc, 0xbb, 0x96, 0x91, 0x98, 0x9f, 0x8a, 0x8d, 0x84, 0x83, 0xde, 0xd9, 0xd0, 0xd7, 0xc2, 0xc5, 0xcc, 0xcb, 0xe6, 0xe1, 0xe8, 0xef, 0xfa, 0xfd, 0xf4, 0xf3]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('crc-8', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = ~~previous; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = TABLE[(crc ^ byte) & 0xff] & 0xff; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],233:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=dallas-1-wire --generate=c` +var TABLE = [0x00, 0x5e, 0xbc, 0xe2, 0x61, 0x3f, 0xdd, 0x83, 0xc2, 0x9c, 0x7e, 0x20, 0xa3, 0xfd, 0x1f, 0x41, 0x9d, 0xc3, 0x21, 0x7f, 0xfc, 0xa2, 0x40, 0x1e, 0x5f, 0x01, 0xe3, 0xbd, 0x3e, 0x60, 0x82, 0xdc, 0x23, 0x7d, 0x9f, 0xc1, 0x42, 0x1c, 0xfe, 0xa0, 0xe1, 0xbf, 0x5d, 0x03, 0x80, 0xde, 0x3c, 0x62, 0xbe, 0xe0, 0x02, 0x5c, 0xdf, 0x81, 0x63, 0x3d, 0x7c, 0x22, 0xc0, 0x9e, 0x1d, 0x43, 0xa1, 0xff, 0x46, 0x18, 0xfa, 0xa4, 0x27, 0x79, 0x9b, 0xc5, 0x84, 0xda, 0x38, 0x66, 0xe5, 0xbb, 0x59, 0x07, 0xdb, 0x85, 0x67, 0x39, 0xba, 0xe4, 0x06, 0x58, 0x19, 0x47, 0xa5, 0xfb, 0x78, 0x26, 0xc4, 0x9a, 0x65, 0x3b, 0xd9, 0x87, 0x04, 0x5a, 0xb8, 0xe6, 0xa7, 0xf9, 0x1b, 0x45, 0xc6, 0x98, 0x7a, 0x24, 0xf8, 0xa6, 0x44, 0x1a, 0x99, 0xc7, 0x25, 0x7b, 0x3a, 0x64, 0x86, 0xd8, 0x5b, 0x05, 0xe7, 0xb9, 0x8c, 0xd2, 0x30, 0x6e, 0xed, 0xb3, 0x51, 0x0f, 0x4e, 0x10, 0xf2, 0xac, 0x2f, 0x71, 0x93, 0xcd, 0x11, 0x4f, 0xad, 0xf3, 0x70, 0x2e, 0xcc, 0x92, 0xd3, 0x8d, 0x6f, 0x31, 0xb2, 0xec, 0x0e, 0x50, 0xaf, 0xf1, 0x13, 0x4d, 0xce, 0x90, 0x72, 0x2c, 0x6d, 0x33, 0xd1, 0x8f, 0x0c, 0x52, 0xb0, 0xee, 0x32, 0x6c, 0x8e, 0xd0, 0x53, 0x0d, 0xef, 0xb1, 0xf0, 0xae, 0x4c, 0x12, 0x91, 0xcf, 0x2d, 0x73, 0xca, 0x94, 0x76, 0x28, 0xab, 0xf5, 0x17, 0x49, 0x08, 0x56, 0xb4, 0xea, 0x69, 0x37, 0xd5, 0x8b, 0x57, 0x09, 0xeb, 0xb5, 0x36, 0x68, 0x8a, 0xd4, 0x95, 0xcb, 0x29, 0x77, 0xf4, 0xaa, 0x48, 0x16, 0xe9, 0xb7, 0x55, 0x0b, 0x88, 0xd6, 0x34, 0x6a, 0x2b, 0x75, 0x97, 0xc9, 0x4a, 0x14, 0xf6, 0xa8, 0x74, 0x2a, 0xc8, 0x96, 0x15, 0x4b, 0xa9, 0xf7, 0xb6, 0xe8, 0x0a, 0x54, 0xd7, 0x89, 0x6b, 0x35]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('dallas-1-wire', function (buf, previous) { + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = ~~previous; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = TABLE[(crc ^ byte) & 0xff] & 0xff; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],234:[function(require,module,exports){ +'use strict'; + +var _buffer = require('buffer'); + +var _create_buffer = require('./create_buffer'); + +var _create_buffer2 = _interopRequireDefault(_create_buffer); + +var _define_crc = require('./define_crc'); + +var _define_crc2 = _interopRequireDefault(_define_crc); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Generated by `./pycrc.py --algorithm=table-driven --model=jam --generate=c` +var TABLE = [0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d]; + +if (typeof Int32Array !== 'undefined') TABLE = new Int32Array(TABLE); + +module.exports = (0, _define_crc2.default)('jam', function (buf) { + var previous = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : -1; + + if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf); + + var crc = previous === 0 ? 0 : ~~previous; + + for (var index = 0; index < buf.length; index++) { + var byte = buf[index]; + crc = TABLE[(crc ^ byte) & 0xff] ^ crc >>> 8; + } + + return crc; +}); +},{"./create_buffer":235,"./define_crc":236,"buffer":146}],235:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +var _buffer = require('buffer'); + +var createBuffer = _buffer.Buffer.from && _buffer.Buffer.alloc && _buffer.Buffer.allocUnsafe && _buffer.Buffer.allocUnsafeSlow ? _buffer.Buffer.from + +// support for Node < 5.10 +: function (val) { + return new _buffer.Buffer(val); +}; + +exports.default = createBuffer; +},{"buffer":146}],236:[function(require,module,exports){ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +exports.default = function (model, calc) { + var fn = function fn(buf, previous) { + return calc(buf, previous) >>> 0; + }; + fn.signed = calc; + fn.unsigned = fn; + fn.model = model; + + return fn; +}; +},{}],237:[function(require,module,exports){ +'use strict'; + +module.exports = { + crc1: require('./crc1'), + crc8: require('./crc8'), + crc81wire: require('./crc8_1wire'), + crc16: require('./crc16'), + crc16ccitt: require('./crc16_ccitt'), + crc16modbus: require('./crc16_modbus'), + crc16xmodem: require('./crc16_xmodem'), + crc16kermit: require('./crc16_kermit'), + crc24: require('./crc24'), + crc32: require('./crc32'), + crcjam: require('./crcjam') +}; +},{"./crc1":224,"./crc16":225,"./crc16_ccitt":226,"./crc16_kermit":227,"./crc16_modbus":228,"./crc16_xmodem":229,"./crc24":230,"./crc32":231,"./crc8":232,"./crc8_1wire":233,"./crcjam":234}],238:[function(require,module,exports){ +(function (Buffer){ +var elliptic = require('elliptic') +var BN = require('bn.js') + +module.exports = function createECDH (curve) { + return new ECDH(curve) +} + +var aliases = { + secp256k1: { + name: 'secp256k1', + byteLength: 32 + }, + secp224r1: { + name: 'p224', + byteLength: 28 + }, + prime256v1: { + name: 'p256', + byteLength: 32 + }, + prime192v1: { + name: 'p192', + byteLength: 24 + }, + ed25519: { + name: 'ed25519', + byteLength: 32 + }, + secp384r1: { + name: 'p384', + byteLength: 48 + }, + secp521r1: { + name: 'p521', + byteLength: 66 + } +} + +aliases.p224 = aliases.secp224r1 +aliases.p256 = aliases.secp256r1 = aliases.prime256v1 +aliases.p192 = aliases.secp192r1 = aliases.prime192v1 +aliases.p384 = aliases.secp384r1 +aliases.p521 = aliases.secp521r1 + +function ECDH (curve) { + this.curveType = aliases[curve] + if (!this.curveType) { + this.curveType = { + name: curve + } + } + this.curve = new elliptic.ec(this.curveType.name) // eslint-disable-line new-cap + this.keys = void 0 +} + +ECDH.prototype.generateKeys = function (enc, format) { + this.keys = this.curve.genKeyPair() + return this.getPublicKey(enc, format) +} + +ECDH.prototype.computeSecret = function (other, inenc, enc) { + inenc = inenc || 'utf8' + if (!Buffer.isBuffer(other)) { + other = new Buffer(other, inenc) + } + var otherPub = this.curve.keyFromPublic(other).getPublic() + var out = otherPub.mul(this.keys.getPrivate()).getX() + return formatReturnValue(out, enc, this.curveType.byteLength) +} + +ECDH.prototype.getPublicKey = function (enc, format) { + var key = this.keys.getPublic(format === 'compressed', true) + if (format === 'hybrid') { + if (key[key.length - 1] % 2) { + key[0] = 7 + } else { + key[0] = 6 + } + } + return formatReturnValue(key, enc) +} + +ECDH.prototype.getPrivateKey = function (enc) { + return formatReturnValue(this.keys.getPrivate(), enc) +} + +ECDH.prototype.setPublicKey = function (pub, enc) { + enc = enc || 'utf8' + if (!Buffer.isBuffer(pub)) { + pub = new Buffer(pub, enc) + } + this.keys._importPublic(pub) + return this +} + +ECDH.prototype.setPrivateKey = function (priv, enc) { + enc = enc || 'utf8' + if (!Buffer.isBuffer(priv)) { + priv = new Buffer(priv, enc) + } + + var _priv = new BN(priv) + _priv = _priv.toString(16) + this.keys = this.curve.genKeyPair() + this.keys._importPrivate(_priv) + return this +} + +function formatReturnValue (bn, enc, len) { + if (!Array.isArray(bn)) { + bn = bn.toArray() + } + var buf = new Buffer(bn) + if (len && buf.length < len) { + var zeros = new Buffer(len - buf.length) + zeros.fill(0) + buf = Buffer.concat([zeros, buf]) + } + if (!enc) { + return buf + } else { + return buf.toString(enc) + } +} + +}).call(this,require("buffer").Buffer) +},{"bn.js":108,"buffer":146,"elliptic":317}],239:[function(require,module,exports){ +'use strict' +var inherits = require('inherits') +var MD5 = require('md5.js') +var RIPEMD160 = require('ripemd160') +var sha = require('sha.js') +var Base = require('cipher-base') + +function Hash (hash) { + Base.call(this, 'digest') + + this._hash = hash +} + +inherits(Hash, Base) + +Hash.prototype._update = function (data) { + this._hash.update(data) +} + +Hash.prototype._final = function () { + return this._hash.digest() +} + +module.exports = function createHash (alg) { + alg = alg.toLowerCase() + if (alg === 'md5') return new MD5() + if (alg === 'rmd160' || alg === 'ripemd160') return new RIPEMD160() + + return new Hash(sha(alg)) +} + +},{"cipher-base":155,"inherits":396,"md5.js":637,"ripemd160":740,"sha.js":770}],240:[function(require,module,exports){ +var MD5 = require('md5.js') + +module.exports = function (buffer) { + return new MD5().update(buffer).digest() +} + +},{"md5.js":637}],241:[function(require,module,exports){ +'use strict' +var inherits = require('inherits') +var Legacy = require('./legacy') +var Base = require('cipher-base') +var Buffer = require('safe-buffer').Buffer +var md5 = require('create-hash/md5') +var RIPEMD160 = require('ripemd160') + +var sha = require('sha.js') + +var ZEROS = Buffer.alloc(128) + +function Hmac (alg, key) { + Base.call(this, 'digest') + if (typeof key === 'string') { + key = Buffer.from(key) + } + + var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64 + + this._alg = alg + this._key = key + if (key.length > blocksize) { + var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) + key = hash.update(key).digest() + } else if (key.length < blocksize) { + key = Buffer.concat([key, ZEROS], blocksize) + } + + var ipad = this._ipad = Buffer.allocUnsafe(blocksize) + var opad = this._opad = Buffer.allocUnsafe(blocksize) + + for (var i = 0; i < blocksize; i++) { + ipad[i] = key[i] ^ 0x36 + opad[i] = key[i] ^ 0x5C + } + this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) + this._hash.update(ipad) +} + +inherits(Hmac, Base) + +Hmac.prototype._update = function (data) { + this._hash.update(data) +} + +Hmac.prototype._final = function () { + var h = this._hash.digest() + var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg) + return hash.update(this._opad).update(h).digest() +} + +module.exports = function createHmac (alg, key) { + alg = alg.toLowerCase() + if (alg === 'rmd160' || alg === 'ripemd160') { + return new Hmac('rmd160', key) + } + if (alg === 'md5') { + return new Legacy(md5, key) + } + return new Hmac(alg, key) +} + +},{"./legacy":242,"cipher-base":155,"create-hash/md5":240,"inherits":396,"ripemd160":740,"safe-buffer":742,"sha.js":770}],242:[function(require,module,exports){ +'use strict' +var inherits = require('inherits') +var Buffer = require('safe-buffer').Buffer + +var Base = require('cipher-base') + +var ZEROS = Buffer.alloc(128) +var blocksize = 64 + +function Hmac (alg, key) { + Base.call(this, 'digest') + if (typeof key === 'string') { + key = Buffer.from(key) + } + + this._alg = alg + this._key = key + + if (key.length > blocksize) { + key = alg(key) + } else if (key.length < blocksize) { + key = Buffer.concat([key, ZEROS], blocksize) + } + + var ipad = this._ipad = Buffer.allocUnsafe(blocksize) + var opad = this._opad = Buffer.allocUnsafe(blocksize) + + for (var i = 0; i < blocksize; i++) { + ipad[i] = key[i] ^ 0x36 + opad[i] = key[i] ^ 0x5C + } + + this._hash = [ipad] +} + +inherits(Hmac, Base) + +Hmac.prototype._update = function (data) { + this._hash.push(data) +} + +Hmac.prototype._final = function () { + var h = this._alg(Buffer.concat(this._hash)) + return this._alg(Buffer.concat([this._opad, h])) +} +module.exports = Hmac + +},{"cipher-base":155,"inherits":396,"safe-buffer":742}],243:[function(require,module,exports){ +'use strict' + +exports.randomBytes = exports.rng = exports.pseudoRandomBytes = exports.prng = require('randombytes') +exports.createHash = exports.Hash = require('create-hash') +exports.createHmac = exports.Hmac = require('create-hmac') + +var algos = require('browserify-sign/algos') +var algoKeys = Object.keys(algos) +var hashes = ['sha1', 'sha224', 'sha256', 'sha384', 'sha512', 'md5', 'rmd160'].concat(algoKeys) +exports.getHashes = function () { + return hashes +} + +var p = require('pbkdf2') +exports.pbkdf2 = p.pbkdf2 +exports.pbkdf2Sync = p.pbkdf2Sync + +var aes = require('browserify-cipher') + +exports.Cipher = aes.Cipher +exports.createCipher = aes.createCipher +exports.Cipheriv = aes.Cipheriv +exports.createCipheriv = aes.createCipheriv +exports.Decipher = aes.Decipher +exports.createDecipher = aes.createDecipher +exports.Decipheriv = aes.Decipheriv +exports.createDecipheriv = aes.createDecipheriv +exports.getCiphers = aes.getCiphers +exports.listCiphers = aes.listCiphers + +var dh = require('diffie-hellman') + +exports.DiffieHellmanGroup = dh.DiffieHellmanGroup +exports.createDiffieHellmanGroup = dh.createDiffieHellmanGroup +exports.getDiffieHellman = dh.getDiffieHellman +exports.createDiffieHellman = dh.createDiffieHellman +exports.DiffieHellman = dh.DiffieHellman + +var sign = require('browserify-sign') + +exports.createSign = sign.createSign +exports.Sign = sign.Sign +exports.createVerify = sign.createVerify +exports.Verify = sign.Verify + +exports.createECDH = require('create-ecdh') + +var publicEncrypt = require('public-encrypt') + +exports.publicEncrypt = publicEncrypt.publicEncrypt +exports.privateEncrypt = publicEncrypt.privateEncrypt +exports.publicDecrypt = publicEncrypt.publicDecrypt +exports.privateDecrypt = publicEncrypt.privateDecrypt + +// the least I can do is make error messages for the rest of the node.js/crypto api. +// ;[ +// 'createCredentials' +// ].forEach(function (name) { +// exports[name] = function () { +// throw new Error([ +// 'sorry, ' + name + ' is not implemented yet', +// 'we accept pull requests', +// 'https://github.com/crypto-browserify/crypto-browserify' +// ].join('\n')) +// } +// }) + +var rf = require('randomfill') + +exports.randomFill = rf.randomFill +exports.randomFillSync = rf.randomFillSync + +exports.createCredentials = function () { + throw new Error([ + 'sorry, createCredentials is not implemented yet', + 'we accept pull requests', + 'https://github.com/crypto-browserify/crypto-browserify' + ].join('\n')) +} + +exports.constants = { + 'DH_CHECK_P_NOT_SAFE_PRIME': 2, + 'DH_CHECK_P_NOT_PRIME': 1, + 'DH_UNABLE_TO_CHECK_GENERATOR': 4, + 'DH_NOT_SUITABLE_GENERATOR': 8, + 'NPN_ENABLED': 1, + 'ALPN_ENABLED': 1, + 'RSA_PKCS1_PADDING': 1, + 'RSA_SSLV23_PADDING': 2, + 'RSA_NO_PADDING': 3, + 'RSA_PKCS1_OAEP_PADDING': 4, + 'RSA_X931_PADDING': 5, + 'RSA_PKCS1_PSS_PADDING': 6, + 'POINT_CONVERSION_COMPRESSED': 2, + 'POINT_CONVERSION_UNCOMPRESSED': 4, + 'POINT_CONVERSION_HYBRID': 6 +} + +},{"browserify-cipher":128,"browserify-sign":135,"browserify-sign/algos":132,"create-ecdh":238,"create-hash":239,"create-hmac":241,"diffie-hellman":251,"pbkdf2":672,"public-encrypt":713,"randombytes":724,"randomfill":725}],244:[function(require,module,exports){ +(function (Buffer){ +var Cursor = function(buffer) +{ + if (!(this instanceof Cursor)) + { + return new Cursor(buffer); + } + + if (!(buffer instanceof Buffer)) + { + buffer = new Buffer(buffer); + } + + this._setBuffer(buffer); + this.rewind(); +}; + +Cursor.prototype._setBuffer = function(buffer) +{ + this._buffer = buffer; + this.length = buffer.length; +}; + +Cursor.prototype.buffer = function() +{ + return this._buffer; +}; + +Cursor.prototype.tap = function(cb) +{ + cb(this); + return this; +}; + +Cursor.prototype.clone = function(newIndex) +{ + var c = new this.constructor(this.buffer()); + c.seek(arguments.length === 0 ? this.tell() : newIndex); + + return c; +}; + +Cursor.prototype.tell = function() +{ + return this._index; +}; + +Cursor.prototype.seek = function(op, index) +{ + if (arguments.length == 1) + { + index = op; + op = '='; + } + + if (op == '+') + { + this._index += index; + } + else if (op == '-') + { + this._index -= index; + } + else + { + this._index = index; + } + + return this; +}; + +Cursor.prototype.rewind = function() +{ + return this.seek(0); +}; + +Cursor.prototype.eof = function() +{ + return this.tell() == this.buffer().length; +}; + +Cursor.prototype.write = function(string, length, encoding) +{ + return this.seek('+', this.buffer().write(string, this.tell(), length, encoding)); +}; + +Cursor.prototype.fill = function(value, length) +{ + if (arguments.length == 1) + { + length = this.buffer().length - this.tell(); + } + + this.buffer().fill(value, this.tell(), this.tell() + length); + this.seek('+', length); + + return this; +}; + +Cursor.prototype.slice = function(length) +{ + if (arguments.length === 0) + { + length = this.length - this.tell(); + } + + var c = new this.constructor(this.buffer().slice(this.tell(), this.tell() + length)); + this.seek('+', length); + + return c; +}; + +Cursor.prototype.copyFrom = function(source) +{ + var buf = source instanceof Buffer ? source: source.buffer(); + buf.copy(this.buffer(), this.tell(), 0, buf.length); + this.seek('+', buf.length); + + return this; +}; + +Cursor.prototype.concat = function(list) +{ + for (var i in list) + { + if (list[i] instanceof Cursor) + { + list[i] = list[i].buffer(); + } + } + + list.unshift(this.buffer()); + + var b = Buffer.concat(list); + this._setBuffer(b); + + return this; +}; + +Cursor.prototype.toString = function(encoding, length) +{ + if (arguments.length === 0) + { + encoding = 'utf8'; + length = this.buffer().length - this.tell(); + } + else if (arguments.length === 1) + { + length = this.buffer().length - this.tell(); + } + + var val = this.buffer().toString(encoding, this.tell(), this.tell() + length); + this.seek('+', length); + + return val; +}; + +[ + [1, ['readInt8', 'readUInt8']], + [2, ['readInt16BE', 'readInt16LE', 'readUInt16BE', 'readUInt16LE']], + [4, ['readInt32BE', 'readInt32LE', 'readUInt32BE', 'readUInt32LE', 'readFloatBE', 'readFloatLE']], + [8, ['readDoubleBE', 'readDoubleLE']] +].forEach(function(arr) +{ + arr[1].forEach(function(method) + { + Cursor.prototype[method] = function() + { + var val = this.buffer()[method](this.tell()); + this.seek('+', arr[0]); + + return val; + }; + }); +}); + +[ + [1, ['writeInt8', 'writeUInt8']], + [2, ['writeInt16BE', 'writeInt16LE', 'writeUInt16BE', 'writeUInt16LE']], + [4, ['writeInt32BE', 'writeInt32LE', 'writeUInt32BE', 'writeUInt32LE', 'writeFloatBE', 'writeFloatLE']], + [8, ['writeDoubleBE', 'writeDoubleLE']] +].forEach(function(arr) +{ + arr[1].forEach(function(method) + { + Cursor.prototype[method] = function(val) + { + val = this.buffer()[method](val, this.tell()); + this.seek('+', arr[0]); + + return this; + }; + }); +}); + +//basic extend functionality to facilitate +//writing your own cursor while still providing +//access to low level r/w functionality +Cursor.extend = function(C, proto) +{ + var parent = this; + + if (arguments.length === 1) + { + proto = C; + C = null; + } + + proto = proto || {}; + + C = C || function ctor(buffer) + { + if (!(this instanceof C)) + { + return new C(buffer); + } + + parent.call(this, buffer); + }; + + require('util').inherits(C, parent); + + C.extend = parent.extend; + C.define = parent.define; + + for (var i in proto) + { + C.define(i, proto[i]); + } + + return C; +}; + +Cursor.define = function(name, fn) +{ + var proto = this.prototype[name]; + + this.prototype[name] = proto && function() + { + this.__super = proto; + return fn.apply(this, arguments); + } || fn; +}; + +module.exports = Cursor; + +}).call(this,require("buffer").Buffer) +},{"buffer":146,"util":824}],245:[function(require,module,exports){ +'use strict'; + +exports.utils = require('./des/utils'); +exports.Cipher = require('./des/cipher'); +exports.DES = require('./des/des'); +exports.CBC = require('./des/cbc'); +exports.EDE = require('./des/ede'); + +},{"./des/cbc":246,"./des/cipher":247,"./des/des":248,"./des/ede":249,"./des/utils":250}],246:[function(require,module,exports){ +'use strict'; + +var assert = require('minimalistic-assert'); +var inherits = require('inherits'); + +var proto = {}; + +function CBCState(iv) { + assert.equal(iv.length, 8, 'Invalid IV length'); + + this.iv = new Array(8); + for (var i = 0; i < this.iv.length; i++) + this.iv[i] = iv[i]; +} + +function instantiate(Base) { + function CBC(options) { + Base.call(this, options); + this._cbcInit(); + } + inherits(CBC, Base); + + var keys = Object.keys(proto); + for (var i = 0; i < keys.length; i++) { + var key = keys[i]; + CBC.prototype[key] = proto[key]; + } + + CBC.create = function create(options) { + return new CBC(options); + }; + + return CBC; +} + +exports.instantiate = instantiate; + +proto._cbcInit = function _cbcInit() { + var state = new CBCState(this.options.iv); + this._cbcState = state; +}; + +proto._update = function _update(inp, inOff, out, outOff) { + var state = this._cbcState; + var superProto = this.constructor.super_.prototype; + + var iv = state.iv; + if (this.type === 'encrypt') { + for (var i = 0; i < this.blockSize; i++) + iv[i] ^= inp[inOff + i]; + + superProto._update.call(this, iv, 0, out, outOff); + + for (var i = 0; i < this.blockSize; i++) + iv[i] = out[outOff + i]; + } else { + superProto._update.call(this, inp, inOff, out, outOff); + + for (var i = 0; i < this.blockSize; i++) + out[outOff + i] ^= iv[i]; + + for (var i = 0; i < this.blockSize; i++) + iv[i] = inp[inOff + i]; + } +}; + +},{"inherits":396,"minimalistic-assert":640}],247:[function(require,module,exports){ +'use strict'; + +var assert = require('minimalistic-assert'); + +function Cipher(options) { + this.options = options; + + this.type = this.options.type; + this.blockSize = 8; + this._init(); + + this.buffer = new Array(this.blockSize); + this.bufferOff = 0; +} +module.exports = Cipher; + +Cipher.prototype._init = function _init() { + // Might be overrided +}; + +Cipher.prototype.update = function update(data) { + if (data.length === 0) + return []; + + if (this.type === 'decrypt') + return this._updateDecrypt(data); + else + return this._updateEncrypt(data); +}; + +Cipher.prototype._buffer = function _buffer(data, off) { + // Append data to buffer + var min = Math.min(this.buffer.length - this.bufferOff, data.length - off); + for (var i = 0; i < min; i++) + this.buffer[this.bufferOff + i] = data[off + i]; + this.bufferOff += min; + + // Shift next + return min; +}; + +Cipher.prototype._flushBuffer = function _flushBuffer(out, off) { + this._update(this.buffer, 0, out, off); + this.bufferOff = 0; + return this.blockSize; +}; + +Cipher.prototype._updateEncrypt = function _updateEncrypt(data) { + var inputOff = 0; + var outputOff = 0; + + var count = ((this.bufferOff + data.length) / this.blockSize) | 0; + var out = new Array(count * this.blockSize); + + if (this.bufferOff !== 0) { + inputOff += this._buffer(data, inputOff); + + if (this.bufferOff === this.buffer.length) + outputOff += this._flushBuffer(out, outputOff); + } + + // Write blocks + var max = data.length - ((data.length - inputOff) % this.blockSize); + for (; inputOff < max; inputOff += this.blockSize) { + this._update(data, inputOff, out, outputOff); + outputOff += this.blockSize; + } + + // Queue rest + for (; inputOff < data.length; inputOff++, this.bufferOff++) + this.buffer[this.bufferOff] = data[inputOff]; + + return out; +}; + +Cipher.prototype._updateDecrypt = function _updateDecrypt(data) { + var inputOff = 0; + var outputOff = 0; + + var count = Math.ceil((this.bufferOff + data.length) / this.blockSize) - 1; + var out = new Array(count * this.blockSize); + + // TODO(indutny): optimize it, this is far from optimal + for (; count > 0; count--) { + inputOff += this._buffer(data, inputOff); + outputOff += this._flushBuffer(out, outputOff); + } + + // Buffer rest of the input + inputOff += this._buffer(data, inputOff); + + return out; +}; + +Cipher.prototype.final = function final(buffer) { + var first; + if (buffer) + first = this.update(buffer); + + var last; + if (this.type === 'encrypt') + last = this._finalEncrypt(); + else + last = this._finalDecrypt(); + + if (first) + return first.concat(last); + else + return last; +}; + +Cipher.prototype._pad = function _pad(buffer, off) { + if (off === 0) + return false; + + while (off < buffer.length) + buffer[off++] = 0; + + return true; +}; + +Cipher.prototype._finalEncrypt = function _finalEncrypt() { + if (!this._pad(this.buffer, this.bufferOff)) + return []; + + var out = new Array(this.blockSize); + this._update(this.buffer, 0, out, 0); + return out; +}; + +Cipher.prototype._unpad = function _unpad(buffer) { + return buffer; +}; + +Cipher.prototype._finalDecrypt = function _finalDecrypt() { + assert.equal(this.bufferOff, this.blockSize, 'Not enough data to decrypt'); + var out = new Array(this.blockSize); + this._flushBuffer(out, 0); + + return this._unpad(out); +}; + +},{"minimalistic-assert":640}],248:[function(require,module,exports){ +'use strict'; + +var assert = require('minimalistic-assert'); +var inherits = require('inherits'); + +var utils = require('./utils'); +var Cipher = require('./cipher'); + +function DESState() { + this.tmp = new Array(2); + this.keys = null; +} + +function DES(options) { + Cipher.call(this, options); + + var state = new DESState(); + this._desState = state; + + this.deriveKeys(state, options.key); +} +inherits(DES, Cipher); +module.exports = DES; + +DES.create = function create(options) { + return new DES(options); +}; + +var shiftTable = [ + 1, 1, 2, 2, 2, 2, 2, 2, + 1, 2, 2, 2, 2, 2, 2, 1 +]; + +DES.prototype.deriveKeys = function deriveKeys(state, key) { + state.keys = new Array(16 * 2); + + assert.equal(key.length, this.blockSize, 'Invalid key length'); + + var kL = utils.readUInt32BE(key, 0); + var kR = utils.readUInt32BE(key, 4); + + utils.pc1(kL, kR, state.tmp, 0); + kL = state.tmp[0]; + kR = state.tmp[1]; + for (var i = 0; i < state.keys.length; i += 2) { + var shift = shiftTable[i >>> 1]; + kL = utils.r28shl(kL, shift); + kR = utils.r28shl(kR, shift); + utils.pc2(kL, kR, state.keys, i); + } +}; + +DES.prototype._update = function _update(inp, inOff, out, outOff) { + var state = this._desState; + + var l = utils.readUInt32BE(inp, inOff); + var r = utils.readUInt32BE(inp, inOff + 4); + + // Initial Permutation + utils.ip(l, r, state.tmp, 0); + l = state.tmp[0]; + r = state.tmp[1]; + + if (this.type === 'encrypt') + this._encrypt(state, l, r, state.tmp, 0); + else + this._decrypt(state, l, r, state.tmp, 0); + + l = state.tmp[0]; + r = state.tmp[1]; + + utils.writeUInt32BE(out, l, outOff); + utils.writeUInt32BE(out, r, outOff + 4); +}; + +DES.prototype._pad = function _pad(buffer, off) { + var value = buffer.length - off; + for (var i = off; i < buffer.length; i++) + buffer[i] = value; + + return true; +}; + +DES.prototype._unpad = function _unpad(buffer) { + var pad = buffer[buffer.length - 1]; + for (var i = buffer.length - pad; i < buffer.length; i++) + assert.equal(buffer[i], pad); + + return buffer.slice(0, buffer.length - pad); +}; + +DES.prototype._encrypt = function _encrypt(state, lStart, rStart, out, off) { + var l = lStart; + var r = rStart; + + // Apply f() x16 times + for (var i = 0; i < state.keys.length; i += 2) { + var keyL = state.keys[i]; + var keyR = state.keys[i + 1]; + + // f(r, k) + utils.expand(r, state.tmp, 0); + + keyL ^= state.tmp[0]; + keyR ^= state.tmp[1]; + var s = utils.substitute(keyL, keyR); + var f = utils.permute(s); + + var t = r; + r = (l ^ f) >>> 0; + l = t; + } + + // Reverse Initial Permutation + utils.rip(r, l, out, off); +}; + +DES.prototype._decrypt = function _decrypt(state, lStart, rStart, out, off) { + var l = rStart; + var r = lStart; + + // Apply f() x16 times + for (var i = state.keys.length - 2; i >= 0; i -= 2) { + var keyL = state.keys[i]; + var keyR = state.keys[i + 1]; + + // f(r, k) + utils.expand(l, state.tmp, 0); + + keyL ^= state.tmp[0]; + keyR ^= state.tmp[1]; + var s = utils.substitute(keyL, keyR); + var f = utils.permute(s); + + var t = l; + l = (r ^ f) >>> 0; + r = t; + } + + // Reverse Initial Permutation + utils.rip(l, r, out, off); +}; + +},{"./cipher":247,"./utils":250,"inherits":396,"minimalistic-assert":640}],249:[function(require,module,exports){ +'use strict'; + +var assert = require('minimalistic-assert'); +var inherits = require('inherits'); + +var Cipher = require('./cipher'); +var DES = require('./des'); + +function EDEState(type, key) { + assert.equal(key.length, 24, 'Invalid key length'); + + var k1 = key.slice(0, 8); + var k2 = key.slice(8, 16); + var k3 = key.slice(16, 24); + + if (type === 'encrypt') { + this.ciphers = [ + DES.create({ type: 'encrypt', key: k1 }), + DES.create({ type: 'decrypt', key: k2 }), + DES.create({ type: 'encrypt', key: k3 }) + ]; + } else { + this.ciphers = [ + DES.create({ type: 'decrypt', key: k3 }), + DES.create({ type: 'encrypt', key: k2 }), + DES.create({ type: 'decrypt', key: k1 }) + ]; + } +} + +function EDE(options) { + Cipher.call(this, options); + + var state = new EDEState(this.type, this.options.key); + this._edeState = state; +} +inherits(EDE, Cipher); + +module.exports = EDE; + +EDE.create = function create(options) { + return new EDE(options); +}; + +EDE.prototype._update = function _update(inp, inOff, out, outOff) { + var state = this._edeState; + + state.ciphers[0]._update(inp, inOff, out, outOff); + state.ciphers[1]._update(out, outOff, out, outOff); + state.ciphers[2]._update(out, outOff, out, outOff); +}; + +EDE.prototype._pad = DES.prototype._pad; +EDE.prototype._unpad = DES.prototype._unpad; + +},{"./cipher":247,"./des":248,"inherits":396,"minimalistic-assert":640}],250:[function(require,module,exports){ +'use strict'; + +exports.readUInt32BE = function readUInt32BE(bytes, off) { + var res = (bytes[0 + off] << 24) | + (bytes[1 + off] << 16) | + (bytes[2 + off] << 8) | + bytes[3 + off]; + return res >>> 0; +}; + +exports.writeUInt32BE = function writeUInt32BE(bytes, value, off) { + bytes[0 + off] = value >>> 24; + bytes[1 + off] = (value >>> 16) & 0xff; + bytes[2 + off] = (value >>> 8) & 0xff; + bytes[3 + off] = value & 0xff; +}; + +exports.ip = function ip(inL, inR, out, off) { + var outL = 0; + var outR = 0; + + for (var i = 6; i >= 0; i -= 2) { + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inR >>> (j + i)) & 1; + } + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inL >>> (j + i)) & 1; + } + } + + for (var i = 6; i >= 0; i -= 2) { + for (var j = 1; j <= 25; j += 8) { + outR <<= 1; + outR |= (inR >>> (j + i)) & 1; + } + for (var j = 1; j <= 25; j += 8) { + outR <<= 1; + outR |= (inL >>> (j + i)) & 1; + } + } + + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; + +exports.rip = function rip(inL, inR, out, off) { + var outL = 0; + var outR = 0; + + for (var i = 0; i < 4; i++) { + for (var j = 24; j >= 0; j -= 8) { + outL <<= 1; + outL |= (inR >>> (j + i)) & 1; + outL <<= 1; + outL |= (inL >>> (j + i)) & 1; + } + } + for (var i = 4; i < 8; i++) { + for (var j = 24; j >= 0; j -= 8) { + outR <<= 1; + outR |= (inR >>> (j + i)) & 1; + outR <<= 1; + outR |= (inL >>> (j + i)) & 1; + } + } + + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; + +exports.pc1 = function pc1(inL, inR, out, off) { + var outL = 0; + var outR = 0; + + // 7, 15, 23, 31, 39, 47, 55, 63 + // 6, 14, 22, 30, 39, 47, 55, 63 + // 5, 13, 21, 29, 39, 47, 55, 63 + // 4, 12, 20, 28 + for (var i = 7; i >= 5; i--) { + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inR >> (j + i)) & 1; + } + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inL >> (j + i)) & 1; + } + } + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inR >> (j + i)) & 1; + } + + // 1, 9, 17, 25, 33, 41, 49, 57 + // 2, 10, 18, 26, 34, 42, 50, 58 + // 3, 11, 19, 27, 35, 43, 51, 59 + // 36, 44, 52, 60 + for (var i = 1; i <= 3; i++) { + for (var j = 0; j <= 24; j += 8) { + outR <<= 1; + outR |= (inR >> (j + i)) & 1; + } + for (var j = 0; j <= 24; j += 8) { + outR <<= 1; + outR |= (inL >> (j + i)) & 1; + } + } + for (var j = 0; j <= 24; j += 8) { + outR <<= 1; + outR |= (inL >> (j + i)) & 1; + } + + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; + +exports.r28shl = function r28shl(num, shift) { + return ((num << shift) & 0xfffffff) | (num >>> (28 - shift)); +}; + +var pc2table = [ + // inL => outL + 14, 11, 17, 4, 27, 23, 25, 0, + 13, 22, 7, 18, 5, 9, 16, 24, + 2, 20, 12, 21, 1, 8, 15, 26, + + // inR => outR + 15, 4, 25, 19, 9, 1, 26, 16, + 5, 11, 23, 8, 12, 7, 17, 0, + 22, 3, 10, 14, 6, 20, 27, 24 +]; + +exports.pc2 = function pc2(inL, inR, out, off) { + var outL = 0; + var outR = 0; + + var len = pc2table.length >>> 1; + for (var i = 0; i < len; i++) { + outL <<= 1; + outL |= (inL >>> pc2table[i]) & 0x1; + } + for (var i = len; i < pc2table.length; i++) { + outR <<= 1; + outR |= (inR >>> pc2table[i]) & 0x1; + } + + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; + +exports.expand = function expand(r, out, off) { + var outL = 0; + var outR = 0; + + outL = ((r & 1) << 5) | (r >>> 27); + for (var i = 23; i >= 15; i -= 4) { + outL <<= 6; + outL |= (r >>> i) & 0x3f; + } + for (var i = 11; i >= 3; i -= 4) { + outR |= (r >>> i) & 0x3f; + outR <<= 6; + } + outR |= ((r & 0x1f) << 1) | (r >>> 31); + + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; + +var sTable = [ + 14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1, + 3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8, + 4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7, + 15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13, + + 15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14, + 9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5, + 0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2, + 5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9, + + 10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10, + 1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1, + 13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7, + 11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12, + + 7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3, + 1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9, + 10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8, + 15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14, + + 2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1, + 8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6, + 4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13, + 15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3, + + 12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5, + 0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8, + 9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10, + 7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13, + + 4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10, + 3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6, + 1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7, + 10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12, + + 13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4, + 10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2, + 7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13, + 0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11 +]; + +exports.substitute = function substitute(inL, inR) { + var out = 0; + for (var i = 0; i < 4; i++) { + var b = (inL >>> (18 - i * 6)) & 0x3f; + var sb = sTable[i * 0x40 + b]; + + out <<= 4; + out |= sb; + } + for (var i = 0; i < 4; i++) { + var b = (inR >>> (18 - i * 6)) & 0x3f; + var sb = sTable[4 * 0x40 + i * 0x40 + b]; + + out <<= 4; + out |= sb; + } + return out >>> 0; +}; + +var permuteTable = [ + 16, 25, 12, 11, 3, 20, 4, 15, 31, 17, 9, 6, 27, 14, 1, 22, + 30, 24, 8, 18, 0, 5, 29, 23, 13, 19, 2, 26, 10, 21, 28, 7 +]; + +exports.permute = function permute(num) { + var out = 0; + for (var i = 0; i < permuteTable.length; i++) { + out <<= 1; + out |= (num >>> permuteTable[i]) & 0x1; + } + return out >>> 0; +}; + +exports.padSplit = function padSplit(num, size, group) { + var str = num.toString(2); + while (str.length < size) + str = '0' + str; + + var out = []; + for (var i = 0; i < size; i += group) + out.push(str.slice(i, i + group)); + return out.join(' '); +}; + +},{}],251:[function(require,module,exports){ +(function (Buffer){ +var generatePrime = require('./lib/generatePrime') +var primes = require('./lib/primes.json') + +var DH = require('./lib/dh') + +function getDiffieHellman (mod) { + var prime = new Buffer(primes[mod].prime, 'hex') + var gen = new Buffer(primes[mod].gen, 'hex') + + return new DH(prime, gen) +} + +var ENCODINGS = { + 'binary': true, 'hex': true, 'base64': true +} + +function createDiffieHellman (prime, enc, generator, genc) { + if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) { + return createDiffieHellman(prime, 'binary', enc, generator) + } + + enc = enc || 'binary' + genc = genc || 'binary' + generator = generator || new Buffer([2]) + + if (!Buffer.isBuffer(generator)) { + generator = new Buffer(generator, genc) + } + + if (typeof prime === 'number') { + return new DH(generatePrime(prime, generator), generator, true) + } + + if (!Buffer.isBuffer(prime)) { + prime = new Buffer(prime, enc) + } + + return new DH(prime, generator, true) +} + +exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman +exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman + +}).call(this,require("buffer").Buffer) +},{"./lib/dh":252,"./lib/generatePrime":253,"./lib/primes.json":254,"buffer":146}],252:[function(require,module,exports){ +(function (Buffer){ +var BN = require('bn.js'); +var MillerRabin = require('miller-rabin'); +var millerRabin = new MillerRabin(); +var TWENTYFOUR = new BN(24); +var ELEVEN = new BN(11); +var TEN = new BN(10); +var THREE = new BN(3); +var SEVEN = new BN(7); +var primes = require('./generatePrime'); +var randomBytes = require('randombytes'); +module.exports = DH; + +function setPublicKey(pub, enc) { + enc = enc || 'utf8'; + if (!Buffer.isBuffer(pub)) { + pub = new Buffer(pub, enc); + } + this._pub = new BN(pub); + return this; +} + +function setPrivateKey(priv, enc) { + enc = enc || 'utf8'; + if (!Buffer.isBuffer(priv)) { + priv = new Buffer(priv, enc); + } + this._priv = new BN(priv); + return this; +} + +var primeCache = {}; +function checkPrime(prime, generator) { + var gen = generator.toString('hex'); + var hex = [gen, prime.toString(16)].join('_'); + if (hex in primeCache) { + return primeCache[hex]; + } + var error = 0; + + if (prime.isEven() || + !primes.simpleSieve || + !primes.fermatTest(prime) || + !millerRabin.test(prime)) { + //not a prime so +1 + error += 1; + + if (gen === '02' || gen === '05') { + // we'd be able to check the generator + // it would fail so +8 + error += 8; + } else { + //we wouldn't be able to test the generator + // so +4 + error += 4; + } + primeCache[hex] = error; + return error; + } + if (!millerRabin.test(prime.shrn(1))) { + //not a safe prime + error += 2; + } + var rem; + switch (gen) { + case '02': + if (prime.mod(TWENTYFOUR).cmp(ELEVEN)) { + // unsuidable generator + error += 8; + } + break; + case '05': + rem = prime.mod(TEN); + if (rem.cmp(THREE) && rem.cmp(SEVEN)) { + // prime mod 10 needs to equal 3 or 7 + error += 8; + } + break; + default: + error += 4; + } + primeCache[hex] = error; + return error; +} + +function DH(prime, generator, malleable) { + this.setGenerator(generator); + this.__prime = new BN(prime); + this._prime = BN.mont(this.__prime); + this._primeLen = prime.length; + this._pub = undefined; + this._priv = undefined; + this._primeCode = undefined; + if (malleable) { + this.setPublicKey = setPublicKey; + this.setPrivateKey = setPrivateKey; + } else { + this._primeCode = 8; + } +} +Object.defineProperty(DH.prototype, 'verifyError', { + enumerable: true, + get: function () { + if (typeof this._primeCode !== 'number') { + this._primeCode = checkPrime(this.__prime, this.__gen); + } + return this._primeCode; + } +}); +DH.prototype.generateKeys = function () { + if (!this._priv) { + this._priv = new BN(randomBytes(this._primeLen)); + } + this._pub = this._gen.toRed(this._prime).redPow(this._priv).fromRed(); + return this.getPublicKey(); +}; + +DH.prototype.computeSecret = function (other) { + other = new BN(other); + other = other.toRed(this._prime); + var secret = other.redPow(this._priv).fromRed(); + var out = new Buffer(secret.toArray()); + var prime = this.getPrime(); + if (out.length < prime.length) { + var front = new Buffer(prime.length - out.length); + front.fill(0); + out = Buffer.concat([front, out]); + } + return out; +}; + +DH.prototype.getPublicKey = function getPublicKey(enc) { + return formatReturnValue(this._pub, enc); +}; + +DH.prototype.getPrivateKey = function getPrivateKey(enc) { + return formatReturnValue(this._priv, enc); +}; + +DH.prototype.getPrime = function (enc) { + return formatReturnValue(this.__prime, enc); +}; + +DH.prototype.getGenerator = function (enc) { + return formatReturnValue(this._gen, enc); +}; + +DH.prototype.setGenerator = function (gen, enc) { + enc = enc || 'utf8'; + if (!Buffer.isBuffer(gen)) { + gen = new Buffer(gen, enc); + } + this.__gen = gen; + this._gen = new BN(gen); + return this; +}; + +function formatReturnValue(bn, enc) { + var buf = new Buffer(bn.toArray()); + if (!enc) { + return buf; + } else { + return buf.toString(enc); + } +} + +}).call(this,require("buffer").Buffer) +},{"./generatePrime":253,"bn.js":108,"buffer":146,"miller-rabin":639,"randombytes":724}],253:[function(require,module,exports){ +var randomBytes = require('randombytes'); +module.exports = findPrime; +findPrime.simpleSieve = simpleSieve; +findPrime.fermatTest = fermatTest; +var BN = require('bn.js'); +var TWENTYFOUR = new BN(24); +var MillerRabin = require('miller-rabin'); +var millerRabin = new MillerRabin(); +var ONE = new BN(1); +var TWO = new BN(2); +var FIVE = new BN(5); +var SIXTEEN = new BN(16); +var EIGHT = new BN(8); +var TEN = new BN(10); +var THREE = new BN(3); +var SEVEN = new BN(7); +var ELEVEN = new BN(11); +var FOUR = new BN(4); +var TWELVE = new BN(12); +var primes = null; + +function _getPrimes() { + if (primes !== null) + return primes; + + var limit = 0x100000; + var res = []; + res[0] = 2; + for (var i = 1, k = 3; k < limit; k += 2) { + var sqrt = Math.ceil(Math.sqrt(k)); + for (var j = 0; j < i && res[j] <= sqrt; j++) + if (k % res[j] === 0) + break; + + if (i !== j && res[j] <= sqrt) + continue; + + res[i++] = k; + } + primes = res; + return res; +} + +function simpleSieve(p) { + var primes = _getPrimes(); + + for (var i = 0; i < primes.length; i++) + if (p.modn(primes[i]) === 0) { + if (p.cmpn(primes[i]) === 0) { + return true; + } else { + return false; + } + } + + return true; +} + +function fermatTest(p) { + var red = BN.mont(p); + return TWO.toRed(red).redPow(p.subn(1)).fromRed().cmpn(1) === 0; +} + +function findPrime(bits, gen) { + if (bits < 16) { + // this is what openssl does + if (gen === 2 || gen === 5) { + return new BN([0x8c, 0x7b]); + } else { + return new BN([0x8c, 0x27]); + } + } + gen = new BN(gen); + + var num, n2; + + while (true) { + num = new BN(randomBytes(Math.ceil(bits / 8))); + while (num.bitLength() > bits) { + num.ishrn(1); + } + if (num.isEven()) { + num.iadd(ONE); + } + if (!num.testn(1)) { + num.iadd(TWO); + } + if (!gen.cmp(TWO)) { + while (num.mod(TWENTYFOUR).cmp(ELEVEN)) { + num.iadd(FOUR); + } + } else if (!gen.cmp(FIVE)) { + while (num.mod(TEN).cmp(THREE)) { + num.iadd(FOUR); + } + } + n2 = num.shrn(1); + if (simpleSieve(n2) && simpleSieve(num) && + fermatTest(n2) && fermatTest(num) && + millerRabin.test(n2) && millerRabin.test(num)) { + return num; + } + } + +} + +},{"bn.js":108,"miller-rabin":639,"randombytes":724}],254:[function(require,module,exports){ +module.exports={ + "modp1": { + "gen": "02", + "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a63a3620ffffffffffffffff" + }, + "modp2": { + "gen": "02", + "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece65381ffffffffffffffff" + }, + "modp5": { + "gen": "02", + "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca237327ffffffffffffffff" + }, + "modp14": { + "gen": "02", + "prime": "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" + }, + "modp15": { + "gen": "02", + "prime": "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" + }, + "modp16": { + "gen": "02", + "prime": "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" + }, + "modp17": { + "gen": "02", + "prime": "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" + }, + "modp18": { + "gen": "02", + "prime": "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" + } +} +},{}],255:[function(require,module,exports){ +var assert = require('assert') +var BigInteger = require('bigi') + +var Point = require('./point') + +function Curve (p, a, b, Gx, Gy, n, h) { + this.p = p + this.a = a + this.b = b + this.G = Point.fromAffine(this, Gx, Gy) + this.n = n + this.h = h + + this.infinity = new Point(this, null, null, BigInteger.ZERO) + + // result caching + this.pOverFour = p.add(BigInteger.ONE).shiftRight(2) + + // determine size of p in bytes + this.pLength = Math.floor((this.p.bitLength() + 7) / 8) +} + +Curve.prototype.pointFromX = function (isOdd, x) { + var alpha = x.pow(3).add(this.a.multiply(x)).add(this.b).mod(this.p) + var beta = alpha.modPow(this.pOverFour, this.p) // XXX: not compatible with all curves + + var y = beta + if (beta.isEven() ^ !isOdd) { + y = this.p.subtract(y) // -y % p + } + + return Point.fromAffine(this, x, y) +} + +Curve.prototype.isInfinity = function (Q) { + if (Q === this.infinity) return true + + return Q.z.signum() === 0 && Q.y.signum() !== 0 +} + +Curve.prototype.isOnCurve = function (Q) { + if (this.isInfinity(Q)) return true + + var x = Q.affineX + var y = Q.affineY + var a = this.a + var b = this.b + var p = this.p + + // Check that xQ and yQ are integers in the interval [0, p - 1] + if (x.signum() < 0 || x.compareTo(p) >= 0) return false + if (y.signum() < 0 || y.compareTo(p) >= 0) return false + + // and check that y^2 = x^3 + ax + b (mod p) + var lhs = y.square().mod(p) + var rhs = x.pow(3).add(a.multiply(x)).add(b).mod(p) + return lhs.equals(rhs) +} + +/** + * Validate an elliptic curve point. + * + * See SEC 1, section 3.2.2.1: Elliptic Curve Public Key Validation Primitive + */ +Curve.prototype.validate = function (Q) { + // Check Q != O + assert(!this.isInfinity(Q), 'Point is at infinity') + assert(this.isOnCurve(Q), 'Point is not on the curve') + + // Check nQ = O (where Q is a scalar multiple of G) + var nQ = Q.multiply(this.n) + assert(this.isInfinity(nQ), 'Point is not a scalar multiple of G') + + return true +} + +module.exports = Curve + +},{"./point":259,"assert":26,"bigi":63}],256:[function(require,module,exports){ +module.exports={ + "secp128r1": { + "p": "fffffffdffffffffffffffffffffffff", + "a": "fffffffdfffffffffffffffffffffffc", + "b": "e87579c11079f43dd824993c2cee5ed3", + "n": "fffffffe0000000075a30d1b9038a115", + "h": "01", + "Gx": "161ff7528b899b2d0c28607ca52c5b86", + "Gy": "cf5ac8395bafeb13c02da292dded7a83" + }, + "secp160k1": { + "p": "fffffffffffffffffffffffffffffffeffffac73", + "a": "00", + "b": "07", + "n": "0100000000000000000001b8fa16dfab9aca16b6b3", + "h": "01", + "Gx": "3b4c382ce37aa192a4019e763036f4f5dd4d7ebb", + "Gy": "938cf935318fdced6bc28286531733c3f03c4fee" + }, + "secp160r1": { + "p": "ffffffffffffffffffffffffffffffff7fffffff", + "a": "ffffffffffffffffffffffffffffffff7ffffffc", + "b": "1c97befc54bd7a8b65acf89f81d4d4adc565fa45", + "n": "0100000000000000000001f4c8f927aed3ca752257", + "h": "01", + "Gx": "4a96b5688ef573284664698968c38bb913cbfc82", + "Gy": "23a628553168947d59dcc912042351377ac5fb32" + }, + "secp192k1": { + "p": "fffffffffffffffffffffffffffffffffffffffeffffee37", + "a": "00", + "b": "03", + "n": "fffffffffffffffffffffffe26f2fc170f69466a74defd8d", + "h": "01", + "Gx": "db4ff10ec057e9ae26b07d0280b7f4341da5d1b1eae06c7d", + "Gy": "9b2f2f6d9c5628a7844163d015be86344082aa88d95e2f9d" + }, + "secp192r1": { + "p": "fffffffffffffffffffffffffffffffeffffffffffffffff", + "a": "fffffffffffffffffffffffffffffffefffffffffffffffc", + "b": "64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", + "n": "ffffffffffffffffffffffff99def836146bc9b1b4d22831", + "h": "01", + "Gx": "188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012", + "Gy": "07192b95ffc8da78631011ed6b24cdd573f977a11e794811" + }, + "secp256k1": { + "p": "fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", + "a": "00", + "b": "07", + "n": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141", + "h": "01", + "Gx": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798", + "Gy": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8" + }, + "secp256r1": { + "p": "ffffffff00000001000000000000000000000000ffffffffffffffffffffffff", + "a": "ffffffff00000001000000000000000000000000fffffffffffffffffffffffc", + "b": "5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b", + "n": "ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551", + "h": "01", + "Gx": "6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296", + "Gy": "4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5" + } +} + +},{}],257:[function(require,module,exports){ +var Point = require('./point') +var Curve = require('./curve') + +var getCurveByName = require('./names') + +module.exports = { + Curve: Curve, + Point: Point, + getCurveByName: getCurveByName +} + +},{"./curve":255,"./names":258,"./point":259}],258:[function(require,module,exports){ +var BigInteger = require('bigi') + +var curves = require('./curves.json') +var Curve = require('./curve') + +function getCurveByName (name) { + var curve = curves[name] + if (!curve) return null + + var p = new BigInteger(curve.p, 16) + var a = new BigInteger(curve.a, 16) + var b = new BigInteger(curve.b, 16) + var n = new BigInteger(curve.n, 16) + var h = new BigInteger(curve.h, 16) + var Gx = new BigInteger(curve.Gx, 16) + var Gy = new BigInteger(curve.Gy, 16) + + return new Curve(p, a, b, Gx, Gy, n, h) +} + +module.exports = getCurveByName + +},{"./curve":255,"./curves.json":256,"bigi":63}],259:[function(require,module,exports){ +var assert = require('assert') +var Buffer = require('safe-buffer').Buffer +var BigInteger = require('bigi') + +var THREE = BigInteger.valueOf(3) + +function Point (curve, x, y, z) { + assert.notStrictEqual(z, undefined, 'Missing Z coordinate') + + this.curve = curve + this.x = x + this.y = y + this.z = z + this._zInv = null + + this.compressed = true +} + +Object.defineProperty(Point.prototype, 'zInv', { + get: function () { + if (this._zInv === null) { + this._zInv = this.z.modInverse(this.curve.p) + } + + return this._zInv + } +}) + +Object.defineProperty(Point.prototype, 'affineX', { + get: function () { + return this.x.multiply(this.zInv).mod(this.curve.p) + } +}) + +Object.defineProperty(Point.prototype, 'affineY', { + get: function () { + return this.y.multiply(this.zInv).mod(this.curve.p) + } +}) + +Point.fromAffine = function (curve, x, y) { + return new Point(curve, x, y, BigInteger.ONE) +} + +Point.prototype.equals = function (other) { + if (other === this) return true + if (this.curve.isInfinity(this)) return this.curve.isInfinity(other) + if (this.curve.isInfinity(other)) return this.curve.isInfinity(this) + + // u = Y2 * Z1 - Y1 * Z2 + var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p) + + if (u.signum() !== 0) return false + + // v = X2 * Z1 - X1 * Z2 + var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p) + + return v.signum() === 0 +} + +Point.prototype.negate = function () { + var y = this.curve.p.subtract(this.y) + + return new Point(this.curve, this.x, y, this.z) +} + +Point.prototype.add = function (b) { + if (this.curve.isInfinity(this)) return b + if (this.curve.isInfinity(b)) return this + + var x1 = this.x + var y1 = this.y + var x2 = b.x + var y2 = b.y + + // u = Y2 * Z1 - Y1 * Z2 + var u = y2.multiply(this.z).subtract(y1.multiply(b.z)).mod(this.curve.p) + // v = X2 * Z1 - X1 * Z2 + var v = x2.multiply(this.z).subtract(x1.multiply(b.z)).mod(this.curve.p) + + if (v.signum() === 0) { + if (u.signum() === 0) { + return this.twice() // this == b, so double + } + + return this.curve.infinity // this = -b, so infinity + } + + var v2 = v.square() + var v3 = v2.multiply(v) + var x1v2 = x1.multiply(v2) + var zu2 = u.square().multiply(this.z) + + // x3 = v * (z2 * (z1 * u^2 - 2 * x1 * v^2) - v^3) + var x3 = zu2.subtract(x1v2.shiftLeft(1)).multiply(b.z).subtract(v3).multiply(v).mod(this.curve.p) + // y3 = z2 * (3 * x1 * u * v^2 - y1 * v^3 - z1 * u^3) + u * v^3 + var y3 = x1v2.multiply(THREE).multiply(u).subtract(y1.multiply(v3)).subtract(zu2.multiply(u)).multiply(b.z).add(u.multiply(v3)).mod(this.curve.p) + // z3 = v^3 * z1 * z2 + var z3 = v3.multiply(this.z).multiply(b.z).mod(this.curve.p) + + return new Point(this.curve, x3, y3, z3) +} + +Point.prototype.twice = function () { + if (this.curve.isInfinity(this)) return this + if (this.y.signum() === 0) return this.curve.infinity + + var x1 = this.x + var y1 = this.y + + var y1z1 = y1.multiply(this.z).mod(this.curve.p) + var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p) + var a = this.curve.a + + // w = 3 * x1^2 + a * z1^2 + var w = x1.square().multiply(THREE) + + if (a.signum() !== 0) { + w = w.add(this.z.square().multiply(a)) + } + + w = w.mod(this.curve.p) + // x3 = 2 * y1 * z1 * (w^2 - 8 * x1 * y1^2 * z1) + var x3 = w.square().subtract(x1.shiftLeft(3).multiply(y1sqz1)).shiftLeft(1).multiply(y1z1).mod(this.curve.p) + // y3 = 4 * y1^2 * z1 * (3 * w * x1 - 2 * y1^2 * z1) - w^3 + var y3 = w.multiply(THREE).multiply(x1).subtract(y1sqz1.shiftLeft(1)).shiftLeft(2).multiply(y1sqz1).subtract(w.pow(3)).mod(this.curve.p) + // z3 = 8 * (y1 * z1)^3 + var z3 = y1z1.pow(3).shiftLeft(3).mod(this.curve.p) + + return new Point(this.curve, x3, y3, z3) +} + +// Simple NAF (Non-Adjacent Form) multiplication algorithm +// TODO: modularize the multiplication algorithm +Point.prototype.multiply = function (k) { + if (this.curve.isInfinity(this)) return this + if (k.signum() === 0) return this.curve.infinity + + var e = k + var h = e.multiply(THREE) + + var neg = this.negate() + var R = this + + for (var i = h.bitLength() - 2; i > 0; --i) { + var hBit = h.testBit(i) + var eBit = e.testBit(i) + + R = R.twice() + + if (hBit !== eBit) { + R = R.add(hBit ? this : neg) + } + } + + return R +} + +// Compute this*j + x*k (simultaneous multiplication) +Point.prototype.multiplyTwo = function (j, x, k) { + var i = Math.max(j.bitLength(), k.bitLength()) - 1 + var R = this.curve.infinity + var both = this.add(x) + + while (i >= 0) { + var jBit = j.testBit(i) + var kBit = k.testBit(i) + + R = R.twice() + + if (jBit) { + if (kBit) { + R = R.add(both) + } else { + R = R.add(this) + } + } else if (kBit) { + R = R.add(x) + } + --i + } + + return R +} + +Point.prototype.getEncoded = function (compressed) { + if (compressed == null) compressed = this.compressed + if (this.curve.isInfinity(this)) return Buffer.alloc(1, 0) // Infinity point encoded is simply '00' + + var x = this.affineX + var y = this.affineY + var byteLength = this.curve.pLength + var buffer + + // 0x02/0x03 | X + if (compressed) { + buffer = Buffer.allocUnsafe(1 + byteLength) + buffer.writeUInt8(y.isEven() ? 0x02 : 0x03, 0) + + // 0x04 | X | Y + } else { + buffer = Buffer.allocUnsafe(1 + byteLength + byteLength) + buffer.writeUInt8(0x04, 0) + + y.toBuffer(byteLength).copy(buffer, 1 + byteLength) + } + + x.toBuffer(byteLength).copy(buffer, 1) + + return buffer +} + +Point.decodeFrom = function (curve, buffer) { + var type = buffer.readUInt8(0) + var compressed = (type !== 4) + + var byteLength = Math.floor((curve.p.bitLength() + 7) / 8) + var x = BigInteger.fromBuffer(buffer.slice(1, 1 + byteLength)) + + var Q + if (compressed) { + assert.equal(buffer.length, byteLength + 1, 'Invalid sequence length') + assert(type === 0x02 || type === 0x03, 'Invalid sequence tag') + + var isOdd = (type === 0x03) + Q = curve.pointFromX(isOdd, x) + } else { + assert.equal(buffer.length, 1 + byteLength + byteLength, 'Invalid sequence length') + + var y = BigInteger.fromBuffer(buffer.slice(1 + byteLength)) + Q = Point.fromAffine(curve, x, y) + } + + Q.compressed = compressed + return Q +} + +Point.prototype.toString = function () { + if (this.curve.isInfinity(this)) return '(INFINITY)' + + return '(' + this.affineX.toString() + ',' + this.affineY.toString() + ')' +} + +module.exports = Point + +},{"assert":26,"bigi":63,"safe-buffer":742}],260:[function(require,module,exports){ +(function (Buffer){ +"use strict"; +Object.defineProperty(exports, "__esModule", { value: true }); +const createHmac = require("create-hmac"); +const nacl = require("tweetnacl"); +const utils_1 = require("./utils"); +const ED25519_CURVE = 'ed25519 seed'; +const HARDENED_OFFSET = 0x80000000; +exports.getMasterKeyFromSeed = (seed) => { + const hmac = createHmac('sha512', ED25519_CURVE); + const I = hmac.update(Buffer.from(seed, 'hex')).digest(); + const IL = I.slice(0, 32); + const IR = I.slice(32); + return { + key: IL, + chainCode: IR, + }; +}; +const CKDPriv = ({ key, chainCode }, index) => { + const indexBuffer = Buffer.allocUnsafe(4); + indexBuffer.writeUInt32BE(index, 0); + const data = Buffer.concat([Buffer.alloc(1, 0), key, indexBuffer]); + const I = createHmac('sha512', chainCode) + .update(data) + .digest(); + const IL = I.slice(0, 32); + const IR = I.slice(32); + return { + key: IL, + chainCode: IR, + }; +}; +exports.getPublicKey = (privateKey, withZeroByte = true) => { + const keyPair = nacl.sign.keyPair.fromSeed(privateKey); + const signPk = keyPair.secretKey.subarray(32); + const zero = Buffer.alloc(1, 0); + return withZeroByte ? + Buffer.concat([zero, Buffer.from(signPk)]) : + Buffer.from(signPk); +}; +exports.isValidPath = (path) => { + if (!utils_1.pathRegex.test(path)) { + return false; + } + return !path + .split('/') + .slice(1) + .map(utils_1.replaceDerive) + .some(isNaN); +}; +exports.derivePath = (path, seed) => { + if (!exports.isValidPath(path)) { + throw new Error('Invalid derivation path'); + } + const { key, chainCode } = exports.getMasterKeyFromSeed(seed); + const segments = path + .split('/') + .slice(1) + .map(utils_1.replaceDerive) + .map(el => parseInt(el, 10)); + return segments.reduce((parentKeys, segment) => CKDPriv(parentKeys, segment + HARDENED_OFFSET), { key, chainCode }); +}; + +}).call(this,require("buffer").Buffer) +},{"./utils":261,"buffer":146,"create-hmac":262,"tweetnacl":813}],261:[function(require,module,exports){ +"use strict"; +Object.defineProperty(exports, "__esModule", { value: true }); +exports.pathRegex = new RegExp("^m(\\/[0-9]+')+$"); +exports.replaceDerive = (val) => val.replace("'", ''); + +},{}],262:[function(require,module,exports){ +arguments[4][241][0].apply(exports,arguments) +},{"./legacy":263,"cipher-base":155,"create-hash/md5":240,"dup":241,"inherits":396,"ripemd160":740,"safe-buffer":742,"sha.js":770}],263:[function(require,module,exports){ +arguments[4][242][0].apply(exports,arguments) +},{"cipher-base":155,"dup":242,"inherits":396,"safe-buffer":742}],264:[function(require,module,exports){ +//const { generateMnemonic, getSeedFromMnemonic } = require('./src/Mnemonic') +const { getMultiSignAddress, getAddress, getDid } = require('./src/Address') +//const Transaction = require('./src/Transaction') +const { + getMasterPrivateKey, + getMasterPublicKey, + getBip32ExtendedPrivateKey, + getBip32ExtendedPublicKey, + getAccountExtendedPrivateKey, + getAccountExtendedPublicKey, + getDerivedPrivateKey, + getDerivedPublicKey, + getSinglePrivateKey, + getSinglePublicKey, + getPublicKeyFromPrivateKey, + generateSubPrivateKey, + generateSubPublicKey, + getIdChainMasterPublicKey, + generateIdChainSubPrivateKey, + generateIdChainSubPublicKey, + sign, + verify, +} = require('./src/Api') + +module.exports = { + //generateMnemonic, + //getSeedFromMnemonic, + getMultiSignAddress, + getAddress, + getDid, + getMasterPrivateKey, + getMasterPublicKey, + getBip32ExtendedPrivateKey, + getBip32ExtendedPublicKey, + getAccountExtendedPrivateKey, + getAccountExtendedPublicKey, + getDerivedPrivateKey, + getDerivedPublicKey, + getSinglePrivateKey, + getSinglePublicKey, + getPublicKeyFromPrivateKey, + generateSubPrivateKey, + generateSubPublicKey, + getIdChainMasterPublicKey, + generateIdChainSubPrivateKey, + generateIdChainSubPublicKey, + sign, + verify, + //Transaction, +} + +},{"./src/Address":314,"./src/Api":315}],265:[function(require,module,exports){ +(function (global,Buffer){ +'use strict'; + +var bitcore = module.exports; + +// module information +bitcore.version = 'v' + require('./package.json').version; +bitcore.versionGuard = function(version) { + if (version !== undefined) { + var message = 'More than one instance of bitcore-lib found. ' + + 'Please make sure to require bitcore-lib and check that submodules do' + + ' not also include their own bitcore-lib dependency.'; + throw new Error(message); + } +}; +bitcore.versionGuard(global._bitcore); +global._bitcore = bitcore.version; + +// crypto +bitcore.crypto = {}; +bitcore.crypto.BN = require('./lib/crypto/bn'); +bitcore.crypto.ECDSA = require('./lib/crypto/ecdsa'); +bitcore.crypto.Hash = require('./lib/crypto/hash'); +bitcore.crypto.Random = require('./lib/crypto/random'); +bitcore.crypto.Point = require('./lib/crypto/point'); +bitcore.crypto.Signature = require('./lib/crypto/signature'); + +// encoding +bitcore.encoding = {}; +bitcore.encoding.Base58 = require('./lib/encoding/base58'); +bitcore.encoding.Base58Check = require('./lib/encoding/base58check'); +bitcore.encoding.BufferReader = require('./lib/encoding/bufferreader'); +bitcore.encoding.BufferWriter = require('./lib/encoding/bufferwriter'); +bitcore.encoding.Varint = require('./lib/encoding/varint'); + +// utilities +bitcore.util = {}; +bitcore.util.buffer = require('./lib/util/buffer'); +bitcore.util.js = require('./lib/util/js'); +bitcore.util.preconditions = require('./lib/util/preconditions'); + +// errors thrown by the library +bitcore.errors = require('./lib/errors'); + +// main bitcoin library +bitcore.Address = require('./lib/address'); +bitcore.Block = require('./lib/block'); +bitcore.MerkleBlock = require('./lib/block/merkleblock'); +bitcore.BlockHeader = require('./lib/block/blockheader'); +bitcore.HDPrivateKey = require('./lib/hdprivatekey.js'); +bitcore.HDPublicKey = require('./lib/hdpublickey.js'); +bitcore.Networks = require('./lib/networks'); +bitcore.Opcode = require('./lib/opcode'); +bitcore.PrivateKey = require('./lib/privatekey'); +bitcore.PublicKey = require('./lib/publickey'); +bitcore.Script = require('./lib/script'); +bitcore.Transaction = require('./lib/transaction'); +bitcore.URI = require('./lib/uri'); +bitcore.Unit = require('./lib/unit'); + +// dependencies, subject to change +bitcore.deps = {}; +bitcore.deps.bnjs = require('bn.js'); +bitcore.deps.bs58 = require('bs58'); +bitcore.deps.Buffer = Buffer; +bitcore.deps.elliptic = require('elliptic'); +bitcore.deps._ = require('lodash'); + +// Internal usage, exposed for testing/advanced tweaking +bitcore.Transaction.sighash = require('./lib/transaction/sighash'); + +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer) +},{"./lib/address":266,"./lib/block":269,"./lib/block/blockheader":268,"./lib/block/merkleblock":270,"./lib/crypto/bn":271,"./lib/crypto/ecdsa":272,"./lib/crypto/hash":273,"./lib/crypto/point":274,"./lib/crypto/random":275,"./lib/crypto/signature":276,"./lib/encoding/base58":277,"./lib/encoding/base58check":278,"./lib/encoding/bufferreader":279,"./lib/encoding/bufferwriter":280,"./lib/encoding/varint":281,"./lib/errors":282,"./lib/hdprivatekey.js":284,"./lib/hdpublickey.js":285,"./lib/networks":286,"./lib/opcode":287,"./lib/privatekey":288,"./lib/publickey":289,"./lib/script":290,"./lib/transaction":293,"./lib/transaction/sighash":301,"./lib/unit":306,"./lib/uri":307,"./lib/util/buffer":308,"./lib/util/js":309,"./lib/util/preconditions":310,"./package.json":312,"bn.js":108,"bs58":138,"buffer":146,"elliptic":317,"lodash":311}],266:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('./util/preconditions'); +var errors = require('./errors'); +var Base58Check = require('./encoding/base58check'); +var Networks = require('./networks'); +var Hash = require('./crypto/hash'); +var JSUtil = require('./util/js'); +var PublicKey = require('./publickey'); + +/** + * Instantiate an address from an address String or Buffer, a public key or script hash Buffer, + * or an instance of {@link PublicKey} or {@link Script}. + * + * This is an immutable class, and if the first parameter provided to this constructor is an + * `Address` instance, the same argument will be returned. + * + * An address has two key properties: `network` and `type`. The type is either + * `Address.PayToPublicKeyHash` (value is the `'pubkeyhash'` string) + * or `Address.PayToScriptHash` (the string `'scripthash'`). The network is an instance of {@link Network}. + * You can quickly check whether an address is of a given kind by using the methods + * `isPayToPublicKeyHash` and `isPayToScriptHash` + * + * @example + * ```javascript + * // validate that an input field is valid + * var error = Address.getValidationError(input, 'testnet'); + * if (!error) { + * var address = Address(input, 'testnet'); + * } else { + * // invalid network or checksum (typo?) + * var message = error.messsage; + * } + * + * // get an address from a public key + * var address = Address(publicKey, 'testnet').toString(); + * ``` + * + * @param {*} data - The encoded data in various formats + * @param {Network|String|number=} network - The network: 'livenet' or 'testnet' + * @param {string=} type - The type of address: 'script' or 'pubkey' + * @returns {Address} A new valid and frozen instance of an Address + * @constructor + */ +function Address(data, network, type) { + /* jshint maxcomplexity: 12 */ + /* jshint maxstatements: 20 */ + + if (!(this instanceof Address)) { + return new Address(data, network, type); + } + + if (_.isArray(data) && _.isNumber(network)) { + return Address.createMultisig(data, network, type); + } + + if (data instanceof Address) { + // Immutable instance + return data; + } + + $.checkArgument(data, 'First argument is required, please include address data.', 'guide/address.html'); + + if (network && !Networks.get(network)) { + throw new TypeError('Second argument must be "livenet" or "testnet".'); + } + + if (type && (type !== Address.PayToPublicKeyHash && type !== Address.PayToScriptHash)) { + throw new TypeError('Third argument must be "pubkeyhash" or "scripthash".'); + } + + var info = this._classifyArguments(data, network, type); + + // set defaults if not set + info.network = info.network || Networks.get(network) || Networks.defaultNetwork; + info.type = info.type || type || Address.PayToPublicKeyHash; + + JSUtil.defineImmutable(this, { + hashBuffer: info.hashBuffer, + network: info.network, + type: info.type + }); + + return this; +} + +/** + * Internal function used to split different kinds of arguments of the constructor + * @param {*} data - The encoded data in various formats + * @param {Network|String|number=} network - The network: 'livenet' or 'testnet' + * @param {string=} type - The type of address: 'script' or 'pubkey' + * @returns {Object} An "info" object with "type", "network", and "hashBuffer" + */ +Address.prototype._classifyArguments = function(data, network, type) { + /* jshint maxcomplexity: 10 */ + // transform and validate input data + if ((data instanceof Buffer || data instanceof Uint8Array) && data.length === 20) { + return Address._transformHash(data); + } else if ((data instanceof Buffer || data instanceof Uint8Array) && data.length === 21) { + return Address._transformBuffer(data, network, type); + } else if (data instanceof PublicKey) { + return Address._transformPublicKey(data); + } else if (data instanceof Script) { + return Address._transformScript(data, network); + } else if (typeof(data) === 'string') { + return Address._transformString(data, network, type); + } else if (_.isObject(data)) { + return Address._transformObject(data); + } else { + throw new TypeError('First argument is an unrecognized data format.'); + } +}; + +/** @static */ +Address.PayToPublicKeyHash = 'pubkeyhash'; +/** @static */ +Address.PayToScriptHash = 'scripthash'; + +/** + * @param {Buffer} hash - An instance of a hash Buffer + * @returns {Object} An object with keys: hashBuffer + * @private + */ +Address._transformHash = function(hash) { + var info = {}; + if (!(hash instanceof Buffer) && !(hash instanceof Uint8Array)) { + throw new TypeError('Address supplied is not a buffer.'); + } + if (hash.length !== 20) { + throw new TypeError('Address hashbuffers must be exactly 20 bytes.'); + } + info.hashBuffer = hash; + return info; +}; + +/** + * Deserializes an address serialized through `Address#toObject()` + * @param {Object} data + * @param {string} data.hash - the hash that this address encodes + * @param {string} data.type - either 'pubkeyhash' or 'scripthash' + * @param {Network=} data.network - the name of the network associated + * @return {Address} + */ +Address._transformObject = function(data) { + $.checkArgument(data.hash || data.hashBuffer, 'Must provide a `hash` or `hashBuffer` property'); + $.checkArgument(data.type, 'Must provide a `type` property'); + return { + hashBuffer: data.hash ? Buffer.from(data.hash, 'hex') : data.hashBuffer, + network: Networks.get(data.network) || Networks.defaultNetwork, + type: data.type + }; +}; + +/** + * Internal function to discover the network and type based on the first data byte + * + * @param {Buffer} buffer - An instance of a hex encoded address Buffer + * @returns {Object} An object with keys: network and type + * @private + */ +Address._classifyFromVersion = function(buffer) { + var version = {}; + + var pubkeyhashNetwork = Networks.get(buffer[0], 'pubkeyhash'); + var scripthashNetwork = Networks.get(buffer[0], 'scripthash'); + + if (pubkeyhashNetwork) { + version.network = pubkeyhashNetwork; + version.type = Address.PayToPublicKeyHash; + } else if (scripthashNetwork) { + version.network = scripthashNetwork; + version.type = Address.PayToScriptHash; + } + + return version; +}; + +/** + * Internal function to transform a bitcoin address buffer + * + * @param {Buffer} buffer - An instance of a hex encoded address Buffer + * @param {string=} network - The network: 'livenet' or 'testnet' + * @param {string=} type - The type: 'pubkeyhash' or 'scripthash' + * @returns {Object} An object with keys: hashBuffer, network and type + * @private + */ +Address._transformBuffer = function(buffer, network, type) { + /* jshint maxcomplexity: 9 */ + var info = {}; + if (!(buffer instanceof Buffer) && !(buffer instanceof Uint8Array)) { + throw new TypeError('Address supplied is not a buffer.'); + } + if (buffer.length !== 1 + 20) { + throw new TypeError('Address buffers must be exactly 21 bytes.'); + } + + var networkObj = Networks.get(network); + var bufferVersion = Address._classifyFromVersion(buffer); + + if (network && !networkObj) { + throw new TypeError('Unknown network'); + } + + if (!bufferVersion.network || (networkObj && networkObj !== bufferVersion.network)) { + throw new TypeError('Address has mismatched network type.'); + } + + if (!bufferVersion.type || (type && type !== bufferVersion.type)) { + throw new TypeError('Address has mismatched type.'); + } + + info.hashBuffer = buffer.slice(1); + info.network = bufferVersion.network; + info.type = bufferVersion.type; + return info; +}; + +/** + * Internal function to transform a {@link PublicKey} + * + * @param {PublicKey} pubkey - An instance of PublicKey + * @returns {Object} An object with keys: hashBuffer, type + * @private + */ +Address._transformPublicKey = function(pubkey) { + var info = {}; + if (!(pubkey instanceof PublicKey)) { + throw new TypeError('Address must be an instance of PublicKey.'); + } + info.hashBuffer = Hash.sha256ripemd160(pubkey.toBuffer()); + info.type = Address.PayToPublicKeyHash; + return info; +}; + +/** + * Internal function to transform a {@link Script} into a `info` object. + * + * @param {Script} script - An instance of Script + * @returns {Object} An object with keys: hashBuffer, type + * @private + */ +Address._transformScript = function(script, network) { + $.checkArgument(script instanceof Script, 'script must be a Script instance'); + var info = script.getAddressInfo(network); + if (!info) { + throw new errors.Script.CantDeriveAddress(script); + } + return info; +}; + +/** + * Creates a P2SH address from a set of public keys and a threshold. + * + * The addresses will be sorted lexicographically, as that is the trend in bitcoin. + * To create an address from unsorted public keys, use the {@link Script#buildMultisigOut} + * interface. + * + * @param {Array} publicKeys - a set of public keys to create an address + * @param {number} threshold - the number of signatures needed to release the funds + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @param {boolean=} nestedWitness - if the address uses a nested p2sh witness + * @return {Address} + */ +Address.createMultisig = function(publicKeys, threshold, network, nestedWitness) { + network = network || publicKeys[0].network || Networks.defaultNetwork; + var redeemScript = Script.buildMultisigOut(publicKeys, threshold); + if (nestedWitness) { + return Address.payingTo(Script.buildWitnessMultisigOutFromScript(redeemScript), network); + } + return Address.payingTo(redeemScript, network); +}; + +/** + * Internal function to transform a bitcoin address string + * + * @param {string} data + * @param {String|Network=} network - either a Network instance, 'livenet', or 'testnet' + * @param {string=} type - The type: 'pubkeyhash' or 'scripthash' + * @returns {Object} An object with keys: hashBuffer, network and type + * @private + */ +Address._transformString = function(data, network, type) { + if (typeof(data) !== 'string') { + throw new TypeError('data parameter supplied is not a string.'); + } + data = data.trim(); + var addressBuffer = Base58Check.decode(data); + var info = Address._transformBuffer(addressBuffer, network, type); + return info; +}; + +/** + * Instantiate an address from a PublicKey instance + * + * @param {PublicKey} data + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @returns {Address} A new valid and frozen instance of an Address + */ +Address.fromPublicKey = function(data, network) { + var info = Address._transformPublicKey(data); + network = network || Networks.defaultNetwork; + return new Address(info.hashBuffer, network, info.type); +}; + +/** + * Instantiate an address from a ripemd160 public key hash + * + * @param {Buffer} hash - An instance of buffer of the hash + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @returns {Address} A new valid and frozen instance of an Address + */ +Address.fromPublicKeyHash = function(hash, network) { + var info = Address._transformHash(hash); + return new Address(info.hashBuffer, network, Address.PayToPublicKeyHash); +}; + +/** + * Instantiate an address from a ripemd160 script hash + * + * @param {Buffer} hash - An instance of buffer of the hash + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @returns {Address} A new valid and frozen instance of an Address + */ +Address.fromScriptHash = function(hash, network) { + $.checkArgument(hash, 'hash parameter is required'); + var info = Address._transformHash(hash); + return new Address(info.hashBuffer, network, Address.PayToScriptHash); +}; + +/** + * Builds a p2sh address paying to script. This will hash the script and + * use that to create the address. + * If you want to extract an address associated with a script instead, + * see {{Address#fromScript}} + * + * @param {Script} script - An instance of Script + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @returns {Address} A new valid and frozen instance of an Address + */ +Address.payingTo = function(script, network) { + $.checkArgument(script, 'script is required'); + $.checkArgument(script instanceof Script, 'script must be instance of Script'); + return Address.fromScriptHash(Hash.sha256ripemd160(script.toBuffer()), network); +}; + +/** + * Extract address from a Script. The script must be of one + * of the following types: p2pkh input, p2pkh output, p2sh input + * or p2sh output. + * This will analyze the script and extract address information from it. + * If you want to transform any script to a p2sh Address paying + * to that script's hash instead, use {{Address#payingTo}} + * + * @param {Script} script - An instance of Script + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @returns {Address} A new valid and frozen instance of an Address + */ +Address.fromScript = function(script, network) { + $.checkArgument(script instanceof Script, 'script must be a Script instance'); + var info = Address._transformScript(script, network); + return new Address(info.hashBuffer, network, info.type); +}; + +/** + * Instantiate an address from a buffer of the address + * + * @param {Buffer} buffer - An instance of buffer of the address + * @param {String|Network=} network - either a Network instance, 'livenet', or 'testnet' + * @param {string=} type - The type of address: 'script' or 'pubkey' + * @returns {Address} A new valid and frozen instance of an Address + */ +Address.fromBuffer = function(buffer, network, type) { + var info = Address._transformBuffer(buffer, network, type); + return new Address(info.hashBuffer, info.network, info.type); +}; + +/** + * Instantiate an address from an address string + * + * @param {string} str - An string of the bitcoin address + * @param {String|Network=} network - either a Network instance, 'livenet', or 'testnet' + * @param {string=} type - The type of address: 'script' or 'pubkey' + * @returns {Address} A new valid and frozen instance of an Address + */ +Address.fromString = function(str, network, type) { + var info = Address._transformString(str, network, type); + return new Address(info.hashBuffer, info.network, info.type); +}; + +/** + * Instantiate an address from an Object + * + * @param {string} json - An JSON string or Object with keys: hash, network and type + * @returns {Address} A new valid instance of an Address + */ +Address.fromObject = function fromObject(obj) { + $.checkState( + JSUtil.isHexa(obj.hash), + 'Unexpected hash property, "' + obj.hash + '", expected to be hex.' + ); + var hashBuffer = Buffer.from(obj.hash, 'hex'); + return new Address(hashBuffer, obj.network, obj.type); +}; + +/** + * Will return a validation error if exists + * + * @example + * ```javascript + * // a network mismatch error + * var error = Address.getValidationError('15vkcKf7gB23wLAnZLmbVuMiiVDc1Nm4a2', 'testnet'); + * ``` + * + * @param {string} data - The encoded data + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @param {string} type - The type of address: 'script' or 'pubkey' + * @returns {null|Error} The corresponding error message + */ +Address.getValidationError = function(data, network, type) { + var error; + try { + /* jshint nonew: false */ + new Address(data, network, type); + } catch (e) { + error = e; + } + return error; +}; + +/** + * Will return a boolean if an address is valid + * + * @example + * ```javascript + * assert(Address.isValid('15vkcKf7gB23wLAnZLmbVuMiiVDc1Nm4a2', 'livenet')); + * ``` + * + * @param {string} data - The encoded data + * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' + * @param {string} type - The type of address: 'script' or 'pubkey' + * @returns {boolean} The corresponding error message + */ +Address.isValid = function(data, network, type) { + return !Address.getValidationError(data, network, type); +}; + +/** + * Returns true if an address is of pay to public key hash type + * @return boolean + */ +Address.prototype.isPayToPublicKeyHash = function() { + return this.type === Address.PayToPublicKeyHash; +}; + +/** + * Returns true if an address is of pay to script hash type + * @return boolean + */ +Address.prototype.isPayToScriptHash = function() { + return this.type === Address.PayToScriptHash; +}; + +/** + * Will return a buffer representation of the address + * + * @returns {Buffer} Bitcoin address buffer + */ +Address.prototype.toBuffer = function() { + var version = Buffer.from([this.network[this.type]]); + return Buffer.concat([version, this.hashBuffer]); +}; + +/** + * @returns {Object} A plain object with the address information + */ +Address.prototype.toObject = Address.prototype.toJSON = function toObject() { + return { + hash: this.hashBuffer.toString('hex'), + type: this.type, + network: this.network.toString() + }; +}; + +/** + * Will return a the string representation of the address + * + * @returns {string} Bitcoin address + */ +Address.prototype.toString = function() { + return Base58Check.encode(this.toBuffer()); +}; + +/** + * Will return a string formatted for the console + * + * @returns {string} Bitcoin address + */ +Address.prototype.inspect = function() { + return ''; +}; + +module.exports = Address; + +var Script = require('./script'); + +}).call(this,require("buffer").Buffer) +},{"./crypto/hash":273,"./encoding/base58check":278,"./errors":282,"./networks":286,"./publickey":289,"./script":290,"./util/js":309,"./util/preconditions":310,"buffer":146,"lodash":311}],267:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var BlockHeader = require('./blockheader'); +var BN = require('../crypto/bn'); +var BufferUtil = require('../util/buffer'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var Transaction = require('../transaction'); +var $ = require('../util/preconditions'); + +/** + * Instantiate a Block from a Buffer, JSON object, or Object with + * the properties of the Block + * + * @param {*} - A Buffer, JSON string, or Object + * @returns {Block} + * @constructor + */ +function Block(arg) { + if (!(this instanceof Block)) { + return new Block(arg); + } + _.extend(this, Block._from(arg)); + return this; +} + +// https://github.com/bitcoin/bitcoin/blob/b5fa132329f0377d787a4a21c1686609c2bfaece/src/primitives/block.h#L14 +Block.MAX_BLOCK_SIZE = 1000000; + +/** + * @param {*} - A Buffer, JSON string or Object + * @returns {Object} - An object representing block data + * @throws {TypeError} - If the argument was not recognized + * @private + */ +Block._from = function _from(arg) { + var info = {}; + if (BufferUtil.isBuffer(arg)) { + info = Block._fromBufferReader(BufferReader(arg)); + } else if (_.isObject(arg)) { + info = Block._fromObject(arg); + } else { + throw new TypeError('Unrecognized argument for Block'); + } + return info; +}; + +/** + * @param {Object} - A plain JavaScript object + * @returns {Object} - An object representing block data + * @private + */ +Block._fromObject = function _fromObject(data) { + var transactions = []; + data.transactions.forEach(function(tx) { + if (tx instanceof Transaction) { + transactions.push(tx); + } else { + transactions.push(Transaction().fromObject(tx)); + } + }); + var info = { + header: BlockHeader.fromObject(data.header), + transactions: transactions + }; + return info; +}; + +/** + * @param {Object} - A plain JavaScript object + * @returns {Block} - An instance of block + */ +Block.fromObject = function fromObject(obj) { + var info = Block._fromObject(obj); + return new Block(info); +}; + +/** + * @param {BufferReader} - Block data + * @returns {Object} - An object representing the block data + * @private + */ +Block._fromBufferReader = function _fromBufferReader(br) { + var info = {}; + $.checkState(!br.finished(), 'No block data received'); + info.header = BlockHeader.fromBufferReader(br); + var transactions = br.readVarintNum(); + info.transactions = []; + for (var i = 0; i < transactions; i++) { + info.transactions.push(Transaction().fromBufferReader(br)); + } + return info; +}; + +/** + * @param {BufferReader} - A buffer reader of the block + * @returns {Block} - An instance of block + */ +Block.fromBufferReader = function fromBufferReader(br) { + $.checkArgument(br, 'br is required'); + var info = Block._fromBufferReader(br); + return new Block(info); +}; + +/** + * @param {Buffer} - A buffer of the block + * @returns {Block} - An instance of block + */ +Block.fromBuffer = function fromBuffer(buf) { + return Block.fromBufferReader(new BufferReader(buf)); +}; + +/** + * @param {string} - str - A hex encoded string of the block + * @returns {Block} - A hex encoded string of the block + */ +Block.fromString = function fromString(str) { + var buf = Buffer.from(str, 'hex'); + return Block.fromBuffer(buf); +}; + +/** + * @param {Binary} - Raw block binary data or buffer + * @returns {Block} - An instance of block + */ +Block.fromRawBlock = function fromRawBlock(data) { + if (!BufferUtil.isBuffer(data)) { + data = Buffer.from(data, 'binary'); + } + var br = BufferReader(data); + br.pos = Block.Values.START_OF_BLOCK; + var info = Block._fromBufferReader(br); + return new Block(info); +}; + +/** + * @returns {Object} - A plain object with the block properties + */ +Block.prototype.toObject = Block.prototype.toJSON = function toObject() { + var transactions = []; + this.transactions.forEach(function(tx) { + transactions.push(tx.toObject()); + }); + return { + header: this.header.toObject(), + transactions: transactions + }; +}; + +/** + * @returns {Buffer} - A buffer of the block + */ +Block.prototype.toBuffer = function toBuffer() { + return this.toBufferWriter().concat(); +}; + +/** + * @returns {string} - A hex encoded string of the block + */ +Block.prototype.toString = function toString() { + return this.toBuffer().toString('hex'); +}; + +/** + * @param {BufferWriter} - An existing instance of BufferWriter + * @returns {BufferWriter} - An instance of BufferWriter representation of the Block + */ +Block.prototype.toBufferWriter = function toBufferWriter(bw) { + if (!bw) { + bw = new BufferWriter(); + } + bw.write(this.header.toBuffer()); + bw.writeVarintNum(this.transactions.length); + for (var i = 0; i < this.transactions.length; i++) { + this.transactions[i].toBufferWriter(bw); + } + return bw; +}; + +/** + * Will iterate through each transaction and return an array of hashes + * @returns {Array} - An array with transaction hashes + */ +Block.prototype.getTransactionHashes = function getTransactionHashes() { + var hashes = []; + if (this.transactions.length === 0) { + return [Block.Values.NULL_HASH]; + } + for (var t = 0; t < this.transactions.length; t++) { + hashes.push(this.transactions[t]._getHash()); + } + return hashes; +}; + +/** + * Will build a merkle tree of all the transactions, ultimately arriving at + * a single point, the merkle root. + * @link https://en.bitcoin.it/wiki/Protocol_specification#Merkle_Trees + * @returns {Array} - An array with each level of the tree after the other. + */ +Block.prototype.getMerkleTree = function getMerkleTree() { + + var tree = this.getTransactionHashes(); + + var j = 0; + for (var size = this.transactions.length; size > 1; size = Math.floor((size + 1) / 2)) { + for (var i = 0; i < size; i += 2) { + var i2 = Math.min(i + 1, size - 1); + var buf = Buffer.concat([tree[j + i], tree[j + i2]]); + tree.push(Hash.sha256sha256(buf)); + } + j += size; + } + + return tree; +}; + +/** + * Calculates the merkleRoot from the transactions. + * @returns {Buffer} - A buffer of the merkle root hash + */ +Block.prototype.getMerkleRoot = function getMerkleRoot() { + var tree = this.getMerkleTree(); + return tree[tree.length - 1]; +}; + +/** + * Verifies that the transactions in the block match the header merkle root + * @returns {Boolean} - If the merkle roots match + */ +Block.prototype.validMerkleRoot = function validMerkleRoot() { + + var h = new BN(this.header.merkleRoot.toString('hex'), 'hex'); + var c = new BN(this.getMerkleRoot().toString('hex'), 'hex'); + + if (h.cmp(c) !== 0) { + return false; + } + + return true; +}; + +/** + * @returns {Buffer} - The little endian hash buffer of the header + */ +Block.prototype._getHash = function() { + return this.header._getHash(); +}; + +var idProperty = { + configurable: false, + enumerable: true, + /** + * @returns {string} - The big endian hash buffer of the header + */ + get: function() { + if (!this._id) { + this._id = this.header.id; + } + return this._id; + }, + set: _.noop +}; +Object.defineProperty(Block.prototype, 'id', idProperty); +Object.defineProperty(Block.prototype, 'hash', idProperty); + +/** + * @returns {string} - A string formatted for the console + */ +Block.prototype.inspect = function inspect() { + return ''; +}; + +Block.Values = { + START_OF_BLOCK: 8, // Start of block in raw block data + NULL_HASH: Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex') +}; + +module.exports = Block; + +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":271,"../crypto/hash":273,"../encoding/bufferreader":279,"../encoding/bufferwriter":280,"../transaction":293,"../util/buffer":308,"../util/preconditions":310,"./blockheader":268,"buffer":146,"lodash":311}],268:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var BN = require('../crypto/bn'); +var BufferUtil = require('../util/buffer'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var JSUtil = require('../util/js'); +var $ = require('../util/preconditions'); + +var GENESIS_BITS = 0x1d00ffff; + +/** + * Instantiate a BlockHeader from a Buffer, JSON object, or Object with + * the properties of the BlockHeader + * + * @param {*} - A Buffer, JSON string, or Object + * @returns {BlockHeader} - An instance of block header + * @constructor + */ +var BlockHeader = function BlockHeader(arg) { + if (!(this instanceof BlockHeader)) { + return new BlockHeader(arg); + } + var info = BlockHeader._from(arg); + this.version = info.version; + this.prevHash = info.prevHash; + this.merkleRoot = info.merkleRoot; + this.time = info.time; + this.timestamp = info.time; + this.bits = info.bits; + this.nonce = info.nonce; + + if (info.hash) { + $.checkState( + this.hash === info.hash, + 'Argument object hash property does not match block hash.' + ); + } + + return this; +}; + +/** + * @param {*} - A Buffer, JSON string or Object + * @returns {Object} - An object representing block header data + * @throws {TypeError} - If the argument was not recognized + * @private + */ +BlockHeader._from = function _from(arg) { + var info = {}; + if (BufferUtil.isBuffer(arg)) { + info = BlockHeader._fromBufferReader(BufferReader(arg)); + } else if (_.isObject(arg)) { + info = BlockHeader._fromObject(arg); + } else { + throw new TypeError('Unrecognized argument for BlockHeader'); + } + return info; +}; + +/** + * @param {Object} - A JSON string + * @returns {Object} - An object representing block header data + * @private + */ +BlockHeader._fromObject = function _fromObject(data) { + $.checkArgument(data, 'data is required'); + var prevHash = data.prevHash; + var merkleRoot = data.merkleRoot; + if (_.isString(data.prevHash)) { + prevHash = BufferUtil.reverse(Buffer.from(data.prevHash, 'hex')); + } + if (_.isString(data.merkleRoot)) { + merkleRoot = BufferUtil.reverse(Buffer.from(data.merkleRoot, 'hex')); + } + var info = { + hash: data.hash, + version: data.version, + prevHash: prevHash, + merkleRoot: merkleRoot, + time: data.time, + timestamp: data.time, + bits: data.bits, + nonce: data.nonce + }; + return info; +}; + +/** + * @param {Object} - A plain JavaScript object + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromObject = function fromObject(obj) { + var info = BlockHeader._fromObject(obj); + return new BlockHeader(info); +}; + +/** + * @param {Binary} - Raw block binary data or buffer + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromRawBlock = function fromRawBlock(data) { + if (!BufferUtil.isBuffer(data)) { + data = Buffer.from(data, 'binary'); + } + var br = BufferReader(data); + br.pos = BlockHeader.Constants.START_OF_HEADER; + var info = BlockHeader._fromBufferReader(br); + return new BlockHeader(info); +}; + +/** + * @param {Buffer} - A buffer of the block header + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromBuffer = function fromBuffer(buf) { + var info = BlockHeader._fromBufferReader(BufferReader(buf)); + return new BlockHeader(info); +}; + +/** + * @param {string} - A hex encoded buffer of the block header + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromString = function fromString(str) { + var buf = Buffer.from(str, 'hex'); + return BlockHeader.fromBuffer(buf); +}; + +/** + * @param {BufferReader} - A BufferReader of the block header + * @returns {Object} - An object representing block header data + * @private + */ +BlockHeader._fromBufferReader = function _fromBufferReader(br) { + var info = {}; + info.version = br.readInt32LE(); + info.prevHash = br.read(32); + info.merkleRoot = br.read(32); + info.time = br.readUInt32LE(); + info.bits = br.readUInt32LE(); + info.nonce = br.readUInt32LE(); + return info; +}; + +/** + * @param {BufferReader} - A BufferReader of the block header + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromBufferReader = function fromBufferReader(br) { + var info = BlockHeader._fromBufferReader(br); + return new BlockHeader(info); +}; + +/** + * @returns {Object} - A plain object of the BlockHeader + */ +BlockHeader.prototype.toObject = BlockHeader.prototype.toJSON = function toObject() { + return { + hash: this.hash, + version: this.version, + prevHash: BufferUtil.reverse(this.prevHash).toString('hex'), + merkleRoot: BufferUtil.reverse(this.merkleRoot).toString('hex'), + time: this.time, + bits: this.bits, + nonce: this.nonce + }; +}; + +/** + * @returns {Buffer} - A Buffer of the BlockHeader + */ +BlockHeader.prototype.toBuffer = function toBuffer() { + return this.toBufferWriter().concat(); +}; + +/** + * @returns {string} - A hex encoded string of the BlockHeader + */ +BlockHeader.prototype.toString = function toString() { + return this.toBuffer().toString('hex'); +}; + +/** + * @param {BufferWriter} - An existing instance BufferWriter + * @returns {BufferWriter} - An instance of BufferWriter representation of the BlockHeader + */ +BlockHeader.prototype.toBufferWriter = function toBufferWriter(bw) { + if (!bw) { + bw = new BufferWriter(); + } + bw.writeInt32LE(this.version); + bw.write(this.prevHash); + bw.write(this.merkleRoot); + bw.writeUInt32LE(this.time); + bw.writeUInt32LE(this.bits); + bw.writeUInt32LE(this.nonce); + return bw; +}; + +/** + * Returns the target difficulty for this block + * @param {Number} bits + * @returns {BN} An instance of BN with the decoded difficulty bits + */ +BlockHeader.prototype.getTargetDifficulty = function getTargetDifficulty(bits) { + bits = bits || this.bits; + + var target = new BN(bits & 0xffffff); + var mov = 8 * ((bits >>> 24) - 3); + while (mov-- > 0) { + target = target.mul(new BN(2)); + } + return target; +}; + +/** + * @link https://en.bitcoin.it/wiki/Difficulty + * @return {Number} + */ +BlockHeader.prototype.getDifficulty = function getDifficulty() { + var difficulty1TargetBN = this.getTargetDifficulty(GENESIS_BITS).mul(new BN(Math.pow(10, 8))); + var currentTargetBN = this.getTargetDifficulty(); + + var difficultyString = difficulty1TargetBN.div(currentTargetBN).toString(10); + var decimalPos = difficultyString.length - 8; + difficultyString = difficultyString.slice(0, decimalPos) + '.' + difficultyString.slice(decimalPos); + + return parseFloat(difficultyString); +}; + +/** + * @returns {Buffer} - The little endian hash buffer of the header + */ +BlockHeader.prototype._getHash = function hash() { + var buf = this.toBuffer(); + return Hash.sha256sha256(buf); +}; + +var idProperty = { + configurable: false, + enumerable: true, + /** + * @returns {string} - The big endian hash buffer of the header + */ + get: function() { + if (!this._id) { + this._id = BufferReader(this._getHash()).readReverse().toString('hex'); + } + return this._id; + }, + set: _.noop +}; +Object.defineProperty(BlockHeader.prototype, 'id', idProperty); +Object.defineProperty(BlockHeader.prototype, 'hash', idProperty); + +/** + * @returns {Boolean} - If timestamp is not too far in the future + */ +BlockHeader.prototype.validTimestamp = function validTimestamp() { + var currentTime = Math.round(new Date().getTime() / 1000); + if (this.time > currentTime + BlockHeader.Constants.MAX_TIME_OFFSET) { + return false; + } + return true; +}; + +/** + * @returns {Boolean} - If the proof-of-work hash satisfies the target difficulty + */ +BlockHeader.prototype.validProofOfWork = function validProofOfWork() { + var pow = new BN(this.id, 'hex'); + var target = this.getTargetDifficulty(); + + if (pow.cmp(target) > 0) { + return false; + } + return true; +}; + +/** + * @returns {string} - A string formatted for the console + */ +BlockHeader.prototype.inspect = function inspect() { + return ''; +}; + +BlockHeader.Constants = { + START_OF_HEADER: 8, // Start buffer position in raw block data + MAX_TIME_OFFSET: 2 * 60 * 60, // The max a timestamp can be in the future + LARGEST_HASH: new BN('10000000000000000000000000000000000000000000000000000000000000000', 'hex') +}; + +module.exports = BlockHeader; + +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":271,"../crypto/hash":273,"../encoding/bufferreader":279,"../encoding/bufferwriter":280,"../util/buffer":308,"../util/js":309,"../util/preconditions":310,"buffer":146,"lodash":311}],269:[function(require,module,exports){ +module.exports = require('./block'); + +module.exports.BlockHeader = require('./blockheader'); +module.exports.MerkleBlock = require('./merkleblock'); + +},{"./block":267,"./blockheader":268,"./merkleblock":270}],270:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var BlockHeader = require('./blockheader'); +var BufferUtil = require('../util/buffer'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var JSUtil = require('../util/js'); +var Transaction = require('../transaction'); +var errors = require('../errors'); +var $ = require('../util/preconditions'); + +/** + * Instantiate a MerkleBlock from a Buffer, JSON object, or Object with + * the properties of the Block + * + * @param {*} - A Buffer, JSON string, or Object representing a MerkleBlock + * @returns {MerkleBlock} + * @constructor + */ +function MerkleBlock(arg) { + /* jshint maxstatements: 18 */ + + if (!(this instanceof MerkleBlock)) { + return new MerkleBlock(arg); + } + + var info = {}; + if (BufferUtil.isBuffer(arg)) { + info = MerkleBlock._fromBufferReader(BufferReader(arg)); + } else if (_.isObject(arg)) { + var header; + if(arg.header instanceof BlockHeader) { + header = arg.header; + } else { + header = BlockHeader.fromObject(arg.header); + } + info = { + /** + * @name MerkleBlock#header + * @type {BlockHeader} + */ + header: header, + /** + * @name MerkleBlock#numTransactions + * @type {Number} + */ + numTransactions: arg.numTransactions, + /** + * @name MerkleBlock#hashes + * @type {String[]} + */ + hashes: arg.hashes, + /** + * @name MerkleBlock#flags + * @type {Number[]} + */ + flags: arg.flags + }; + } else { + throw new TypeError('Unrecognized argument for MerkleBlock'); + } + _.extend(this,info); + this._flagBitsUsed = 0; + this._hashesUsed = 0; + + return this; +} + +/** + * @param {Buffer} - MerkleBlock data in a Buffer object + * @returns {MerkleBlock} - A MerkleBlock object + */ +MerkleBlock.fromBuffer = function fromBuffer(buf) { + return MerkleBlock.fromBufferReader(BufferReader(buf)); +}; + +/** + * @param {BufferReader} - MerkleBlock data in a BufferReader object + * @returns {MerkleBlock} - A MerkleBlock object + */ +MerkleBlock.fromBufferReader = function fromBufferReader(br) { + return new MerkleBlock(MerkleBlock._fromBufferReader(br)); +}; + +/** + * @returns {Buffer} - A buffer of the block + */ +MerkleBlock.prototype.toBuffer = function toBuffer() { + return this.toBufferWriter().concat(); +}; + +/** + * @param {BufferWriter} - An existing instance of BufferWriter + * @returns {BufferWriter} - An instance of BufferWriter representation of the MerkleBlock + */ +MerkleBlock.prototype.toBufferWriter = function toBufferWriter(bw) { + if (!bw) { + bw = new BufferWriter(); + } + bw.write(this.header.toBuffer()); + bw.writeUInt32LE(this.numTransactions); + bw.writeVarintNum(this.hashes.length); + for (var i = 0; i < this.hashes.length; i++) { + bw.write(Buffer.from(this.hashes[i], 'hex')); + } + bw.writeVarintNum(this.flags.length); + for (i = 0; i < this.flags.length; i++) { + bw.writeUInt8(this.flags[i]); + } + return bw; +}; + +/** + * @returns {Object} - A plain object with the MerkleBlock properties + */ +MerkleBlock.prototype.toObject = MerkleBlock.prototype.toJSON = function toObject() { + return { + header: this.header.toObject(), + numTransactions: this.numTransactions, + hashes: this.hashes, + flags: this.flags + }; +}; + +/** + * Verify that the MerkleBlock is valid + * @returns {Boolean} - True/False whether this MerkleBlock is Valid + */ +MerkleBlock.prototype.validMerkleTree = function validMerkleTree() { + $.checkState(_.isArray(this.flags), 'MerkleBlock flags is not an array'); + $.checkState(_.isArray(this.hashes), 'MerkleBlock hashes is not an array'); + + // Can't have more hashes than numTransactions + if(this.hashes.length > this.numTransactions) { + return false; + } + + // Can't have more flag bits than num hashes + if(this.flags.length * 8 < this.hashes.length) { + return false; + } + + var height = this._calcTreeHeight(); + var opts = { hashesUsed: 0, flagBitsUsed: 0 }; + var root = this._traverseMerkleTree(height, 0, opts); + if(opts.hashesUsed !== this.hashes.length) { + return false; + } + return BufferUtil.equals(root, this.header.merkleRoot); +}; + +/** + * Return a list of all the txs hash that match the filter + * @returns {Array} - txs hash that match the filter + */ +MerkleBlock.prototype.filterdTxsHash = function filterdTxsHash() { + $.checkState(_.isArray(this.flags), 'MerkleBlock flags is not an array'); + $.checkState(_.isArray(this.hashes), 'MerkleBlock hashes is not an array'); + + // Can't have more hashes than numTransactions + if(this.hashes.length > this.numTransactions) { + throw new errors.MerkleBlock.InvalidMerkleTree(); + } + + // Can't have more flag bits than num hashes + if(this.flags.length * 8 < this.hashes.length) { + throw new errors.MerkleBlock.InvalidMerkleTree(); + } + + // If there is only one hash the filter do not match any txs in the block + if(this.hashes.length === 1) { + return []; + }; + + var height = this._calcTreeHeight(); + var opts = { hashesUsed: 0, flagBitsUsed: 0 }; + var txs = this._traverseMerkleTree(height, 0, opts, true); + if(opts.hashesUsed !== this.hashes.length) { + throw new errors.MerkleBlock.InvalidMerkleTree(); + } + return txs; +}; + +/** + * Traverse a the tree in this MerkleBlock, validating it along the way + * Modeled after Bitcoin Core merkleblock.cpp TraverseAndExtract() + * @param {Number} - depth - Current height + * @param {Number} - pos - Current position in the tree + * @param {Object} - opts - Object with values that need to be mutated throughout the traversal + * @param {Boolean} - checkForTxs - if true return opts.txs else return the Merkle Hash + * @param {Number} - opts.flagBitsUsed - Number of flag bits used, should start at 0 + * @param {Number} - opts.hashesUsed - Number of hashes used, should start at 0 + * @param {Array} - opts.txs - Will finish populated by transactions found during traversal that match the filter + * @returns {Buffer|null} - Buffer containing the Merkle Hash for that height + * @returns {Array} - transactions found during traversal that match the filter + * @private + */ +MerkleBlock.prototype._traverseMerkleTree = function traverseMerkleTree(depth, pos, opts, checkForTxs) { + /* jshint maxcomplexity: 12*/ + /* jshint maxstatements: 20 */ + + opts = opts || {}; + opts.txs = opts.txs || []; + opts.flagBitsUsed = opts.flagBitsUsed || 0; + opts.hashesUsed = opts.hashesUsed || 0; + var checkForTxs = checkForTxs || false; + + if(opts.flagBitsUsed > this.flags.length * 8) { + return null; + } + var isParentOfMatch = (this.flags[opts.flagBitsUsed >> 3] >>> (opts.flagBitsUsed++ & 7)) & 1; + if(depth === 0 || !isParentOfMatch) { + if(opts.hashesUsed >= this.hashes.length) { + return null; + } + var hash = this.hashes[opts.hashesUsed++]; + if(depth === 0 && isParentOfMatch) { + opts.txs.push(hash); + } + return Buffer.from(hash, 'hex'); + } else { + var left = this._traverseMerkleTree(depth-1, pos*2, opts); + var right = left; + if(pos*2+1 < this._calcTreeWidth(depth-1)) { + right = this._traverseMerkleTree(depth-1, pos*2+1, opts); + } + if (checkForTxs){ + return opts.txs; + } else { + return Hash.sha256sha256(new Buffer.concat([left, right])); + }; + } +}; + +/** Calculates the width of a merkle tree at a given height. + * Modeled after Bitcoin Core merkleblock.h CalcTreeWidth() + * @param {Number} - Height at which we want the tree width + * @returns {Number} - Width of the tree at a given height + * @private + */ +MerkleBlock.prototype._calcTreeWidth = function calcTreeWidth(height) { + return (this.numTransactions + (1 << height) - 1) >> height; +}; + +/** Calculates the height of the merkle tree in this MerkleBlock + * @param {Number} - Height at which we want the tree width + * @returns {Number} - Height of the merkle tree in this MerkleBlock + * @private + */ +MerkleBlock.prototype._calcTreeHeight = function calcTreeHeight() { + var height = 0; + while (this._calcTreeWidth(height) > 1) { + height++; + } + return height; +}; + +/** + * @param {Transaction|String} - Transaction or Transaction ID Hash + * @returns {Boolean} - return true/false if this MerkleBlock has the TX or not + * @private + */ +MerkleBlock.prototype.hasTransaction = function hasTransaction(tx) { + $.checkArgument(!_.isUndefined(tx), 'tx cannot be undefined'); + $.checkArgument(tx instanceof Transaction || typeof tx === 'string', + 'Invalid tx given, tx must be a "string" or "Transaction"'); + + var hash = tx; + if(tx instanceof Transaction) { + // We need to reverse the id hash for the lookup + hash = BufferUtil.reverse(Buffer.from(tx.id, 'hex')).toString('hex'); + } + + var txs = []; + var height = this._calcTreeHeight(); + this._traverseMerkleTree(height, 0, { txs: txs }); + return txs.indexOf(hash) !== -1; +}; + +/** + * @param {Buffer} - MerkleBlock data + * @returns {Object} - An Object representing merkleblock data + * @private + */ +MerkleBlock._fromBufferReader = function _fromBufferReader(br) { + $.checkState(!br.finished(), 'No merkleblock data received'); + var info = {}; + info.header = BlockHeader.fromBufferReader(br); + info.numTransactions = br.readUInt32LE(); + var numHashes = br.readVarintNum(); + info.hashes = []; + for (var i = 0; i < numHashes; i++) { + info.hashes.push(br.read(32).toString('hex')); + } + var numFlags = br.readVarintNum(); + info.flags = []; + for (i = 0; i < numFlags; i++) { + info.flags.push(br.readUInt8()); + } + return info; +}; + +/** + * @param {Object} - A plain JavaScript object + * @returns {Block} - An instance of block + */ +MerkleBlock.fromObject = function fromObject(obj) { + return new MerkleBlock(obj); +}; + +module.exports = MerkleBlock; + +}).call(this,require("buffer").Buffer) +},{"../crypto/hash":273,"../encoding/bufferreader":279,"../encoding/bufferwriter":280,"../errors":282,"../transaction":293,"../util/buffer":308,"../util/js":309,"../util/preconditions":310,"./blockheader":268,"buffer":146,"lodash":311}],271:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var BN = require('bn.js'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); + +var reversebuf = function(buf) { + var buf2 = Buffer.alloc(buf.length); + for (var i = 0; i < buf.length; i++) { + buf2[i] = buf[buf.length - 1 - i]; + } + return buf2; +}; + +BN.Zero = new BN(0); +BN.One = new BN(1); +BN.Minus1 = new BN(-1); + +BN.fromNumber = function(n) { + $.checkArgument(_.isNumber(n)); + return new BN(n); +}; + +BN.fromString = function(str, base) { + $.checkArgument(_.isString(str)); + return new BN(str, base); +}; + +BN.fromBuffer = function(buf, opts) { + if (typeof opts !== 'undefined' && opts.endian === 'little') { + buf = reversebuf(buf); + } + var hex = buf.toString('hex'); + var bn = new BN(hex, 16); + return bn; +}; + +/** + * Instantiate a BigNumber from a "signed magnitude buffer" + * (a buffer where the most significant bit represents the sign (0 = positive, -1 = negative)) + */ +BN.fromSM = function(buf, opts) { + var ret; + if (buf.length === 0) { + return BN.fromBuffer(Buffer.from([0])); + } + + var endian = 'big'; + if (opts) { + endian = opts.endian; + } + if (endian === 'little') { + buf = reversebuf(buf); + } + + if (buf[0] & 0x80) { + buf[0] = buf[0] & 0x7f; + ret = BN.fromBuffer(buf); + ret.neg().copy(ret); + } else { + ret = BN.fromBuffer(buf); + } + return ret; +}; + + +BN.prototype.toNumber = function() { + return parseInt(this.toString(10), 10); +}; + +BN.prototype.toBuffer = function(opts) { + var buf, hex; + if (opts && opts.size) { + hex = this.toString(16, 2); + var natlen = hex.length / 2; + buf = Buffer.from(hex, 'hex'); + + if (natlen === opts.size) { + buf = buf; + } else if (natlen > opts.size) { + buf = BN.trim(buf, natlen); + } else if (natlen < opts.size) { + buf = BN.pad(buf, natlen, opts.size); + } + } else { + hex = this.toString(16, 2); + buf = Buffer.from(hex, 'hex'); + } + + if (typeof opts !== 'undefined' && opts.endian === 'little') { + buf = reversebuf(buf); + } + + return buf; +}; + +BN.prototype.toSMBigEndian = function() { + var buf; + if (this.cmp(BN.Zero) === -1) { + buf = this.neg().toBuffer(); + if (buf[0] & 0x80) { + buf = Buffer.concat([Buffer.from([0x80]), buf]); + } else { + buf[0] = buf[0] | 0x80; + } + } else { + buf = this.toBuffer(); + if (buf[0] & 0x80) { + buf = Buffer.concat([Buffer.from([0x00]), buf]); + } + } + + if (buf.length === 1 & buf[0] === 0) { + buf = Buffer.from([]); + } + return buf; +}; + +BN.prototype.toSM = function(opts) { + var endian = opts ? opts.endian : 'big'; + var buf = this.toSMBigEndian(); + + if (endian === 'little') { + buf = reversebuf(buf); + } + return buf; +}; + +/** + * Create a BN from a "ScriptNum": + * This is analogous to the constructor for CScriptNum in bitcoind. Many ops in + * bitcoind's script interpreter use CScriptNum, which is not really a proper + * bignum. Instead, an error is thrown if trying to input a number bigger than + * 4 bytes. We copy that behavior here. A third argument, `size`, is provided to + * extend the hard limit of 4 bytes, as some usages require more than 4 bytes. + */ +BN.fromScriptNumBuffer = function(buf, fRequireMinimal, size) { + var nMaxNumSize = size || 4; + $.checkArgument(buf.length <= nMaxNumSize, new Error('script number overflow')); + if (fRequireMinimal && buf.length > 0) { + // Check that the number is encoded with the minimum possible + // number of bytes. + // + // If the most-significant-byte - excluding the sign bit - is zero + // then we're not minimal. Note how this test also rejects the + // negative-zero encoding, 0x80. + if ((buf[buf.length - 1] & 0x7f) === 0) { + // One exception: if there's more than one byte and the most + // significant bit of the second-most-significant-byte is set + // it would conflict with the sign bit. An example of this case + // is +-255, which encode to 0xff00 and 0xff80 respectively. + // (big-endian). + if (buf.length <= 1 || (buf[buf.length - 2] & 0x80) === 0) { + throw new Error('non-minimally encoded script number'); + } + } + } + return BN.fromSM(buf, { + endian: 'little' + }); +}; + +/** + * The corollary to the above, with the notable exception that we do not throw + * an error if the output is larger than four bytes. (Which can happen if + * performing a numerical operation that results in an overflow to more than 4 + * bytes). + */ +BN.prototype.toScriptNumBuffer = function() { + return this.toSM({ + endian: 'little' + }); +}; + +BN.trim = function(buf, natlen) { + return buf.slice(natlen - buf.length, buf.length); +}; + +BN.pad = function(buf, natlen, size) { + var rbuf = Buffer.alloc(size); + for (var i = 0; i < buf.length; i++) { + rbuf[rbuf.length - 1 - i] = buf[buf.length - 1 - i]; + } + for (i = 0; i < size - natlen; i++) { + rbuf[i] = 0; + } + return rbuf; +}; + +module.exports = BN; + +}).call(this,require("buffer").Buffer) +},{"../util/preconditions":310,"bn.js":108,"buffer":146,"lodash":311}],272:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var BN = require('./bn'); +var Point = require('./point'); +var Signature = require('./signature'); +var PublicKey = require('../publickey'); +var Random = require('./random'); +var Hash = require('./hash'); +var BufferUtil = require('../util/buffer'); +var _ = require('lodash'); +var $ = require('../util/preconditions'); + +var ECDSA = function ECDSA(obj) { + if (!(this instanceof ECDSA)) { + return new ECDSA(obj); + } + if (obj) { + this.set(obj); + } +}; + +/* jshint maxcomplexity: 9 */ +ECDSA.prototype.set = function(obj) { + this.hashbuf = obj.hashbuf || this.hashbuf; + this.endian = obj.endian || this.endian; //the endianness of hashbuf + this.privkey = obj.privkey || this.privkey; + this.pubkey = obj.pubkey || (this.privkey ? this.privkey.publicKey : this.pubkey); + this.sig = obj.sig || this.sig; + this.k = obj.k || this.k; + this.verified = obj.verified || this.verified; + return this; +}; + +ECDSA.prototype.privkey2pubkey = function() { + this.pubkey = this.privkey.toPublicKey(); +}; + +ECDSA.prototype.calci = function() { + for (var i = 0; i < 4; i++) { + this.sig.i = i; + var Qprime; + try { + Qprime = this.toPublicKey(); + } catch (e) { + console.error(e); + continue; + } + + if (Qprime.point.eq(this.pubkey.point)) { + this.sig.compressed = this.pubkey.compressed; + return this; + } + } + + this.sig.i = undefined; + throw new Error('Unable to find valid recovery factor'); +}; + +ECDSA.fromString = function(str) { + var obj = JSON.parse(str); + return new ECDSA(obj); +}; + +ECDSA.prototype.randomK = function() { + var N = Point.getN(); + var k; + do { + k = BN.fromBuffer(Random.getRandomBuffer(32)); + } while (!(k.lt(N) && k.gt(BN.Zero))); + this.k = k; + return this; +}; + + +// https://tools.ietf.org/html/rfc6979#section-3.2 +ECDSA.prototype.deterministicK = function(badrs) { + /* jshint maxstatements: 25 */ + // if r or s were invalid when this function was used in signing, + // we do not want to actually compute r, s here for efficiency, so, + // we can increment badrs. explained at end of RFC 6979 section 3.2 + if (_.isUndefined(badrs)) { + badrs = 0; + } + var v = Buffer.alloc(32); + v.fill(0x01); + var k = Buffer.alloc(32); + k.fill(0x00); + var x = this.privkey.bn.toBuffer({ + size: 32 + }); + var hashbuf = this.endian === 'little' ? BufferUtil.reverse(this.hashbuf) : this.hashbuf + k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00]), x, hashbuf]), k); + v = Hash.sha256hmac(v, k); + k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x01]), x, hashbuf]), k); + v = Hash.sha256hmac(v, k); + v = Hash.sha256hmac(v, k); + var T = BN.fromBuffer(v); + var N = Point.getN(); + + // also explained in 3.2, we must ensure T is in the proper range (0, N) + for (var i = 0; i < badrs || !(T.lt(N) && T.gt(BN.Zero)); i++) { + k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00])]), k); + v = Hash.sha256hmac(v, k); + v = Hash.sha256hmac(v, k); + T = BN.fromBuffer(v); + } + + this.k = T; + return this; +}; + +// Information about public key recovery: +// https://bitcointalk.org/index.php?topic=6430.0 +// http://stackoverflow.com/questions/19665491/how-do-i-get-an-ecdsa-public-key-from-just-a-bitcoin-signature-sec1-4-1-6-k +ECDSA.prototype.toPublicKey = function() { + /* jshint maxstatements: 25 */ + var i = this.sig.i; + $.checkArgument(i === 0 || i === 1 || i === 2 || i === 3, new Error('i must be equal to 0, 1, 2, or 3')); + + var e = BN.fromBuffer(this.hashbuf); + var r = this.sig.r; + var s = this.sig.s; + + // A set LSB signifies that the y-coordinate is odd + var isYOdd = i & 1; + + // The more significant bit specifies whether we should use the + // first or second candidate key. + var isSecondKey = i >> 1; + + var n = Point.getN(); + var G = Point.getG(); + + // 1.1 Let x = r + jn + var x = isSecondKey ? r.add(n) : r; + var R = Point.fromX(isYOdd, x); + + // 1.4 Check that nR is at infinity + var nR = R.mul(n); + + if (!nR.isInfinity()) { + throw new Error('nR is not a valid curve point'); + } + + // Compute -e from e + var eNeg = e.neg().umod(n); + + // 1.6.1 Compute Q = r^-1 (sR - eG) + // Q = r^-1 (sR + -eG) + var rInv = r.invm(n); + + //var Q = R.multiplyTwo(s, G, eNeg).mul(rInv); + var Q = R.mul(s).add(G.mul(eNeg)).mul(rInv); + + var pubkey = PublicKey.fromPoint(Q, this.sig.compressed); + + return pubkey; +}; + +ECDSA.prototype.sigError = function() { + /* jshint maxstatements: 25 */ + if (!BufferUtil.isBuffer(this.hashbuf) || this.hashbuf.length !== 32) { + return 'hashbuf must be a 32 byte buffer'; + } + + var r = this.sig.r; + var s = this.sig.s; + if (!(r.gt(BN.Zero) && r.lt(Point.getN())) || !(s.gt(BN.Zero) && s.lt(Point.getN()))) { + return 'r and s not in range'; + } + + var e = BN.fromBuffer(this.hashbuf, this.endian ? { + endian: this.endian + } : undefined); + var n = Point.getN(); + var sinv = s.invm(n); + var u1 = sinv.mul(e).umod(n); + var u2 = sinv.mul(r).umod(n); + + var p = Point.getG().mulAdd(u1, this.pubkey.point, u2); + if (p.isInfinity()) { + return 'p is infinity'; + } + + if (p.getX().umod(n).cmp(r) !== 0) { + return 'Invalid signature'; + } else { + return false; + } +}; + +ECDSA.toLowS = function(s) { + //enforce low s + //see BIP 62, "low S values in signatures" + if (s.gt(BN.fromBuffer(Buffer.from('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex')))) { + s = Point.getN().sub(s); + } + return s; +}; + +ECDSA.prototype._findSignature = function(d, e) { + var N = Point.getN(); + var G = Point.getG(); + // try different values of k until r, s are valid + var badrs = 0; + var k, Q, r, s; + do { + if (!this.k || badrs > 0) { + this.deterministicK(badrs); + } + badrs++; + k = this.k; + Q = G.mul(k); + r = Q.x.umod(N); + s = k.invm(N).mul(e.add(d.mul(r))).umod(N); + } while (r.cmp(BN.Zero) <= 0 || s.cmp(BN.Zero) <= 0); + + s = ECDSA.toLowS(s); + return { + s: s, + r: r + }; + +}; + +ECDSA.prototype.sign = function() { + var hashbuf = this.hashbuf; + var privkey = this.privkey; + var d = privkey.bn; + + $.checkState(hashbuf && privkey && d, new Error('invalid parameters')); + $.checkState(BufferUtil.isBuffer(hashbuf) && hashbuf.length === 32, new Error('hashbuf must be a 32 byte buffer')); + + var e = BN.fromBuffer(hashbuf, this.endian ? { + endian: this.endian + } : undefined); + + var obj = this._findSignature(d, e); + obj.compressed = this.pubkey.compressed; + + this.sig = new Signature(obj); + return this; +}; + +ECDSA.prototype.signRandomK = function() { + this.randomK(); + return this.sign(); +}; + +ECDSA.prototype.toString = function() { + var obj = {}; + if (this.hashbuf) { + obj.hashbuf = this.hashbuf.toString('hex'); + } + if (this.privkey) { + obj.privkey = this.privkey.toString(); + } + if (this.pubkey) { + obj.pubkey = this.pubkey.toString(); + } + if (this.sig) { + obj.sig = this.sig.toString(); + } + if (this.k) { + obj.k = this.k.toString(); + } + return JSON.stringify(obj); +}; + +ECDSA.prototype.verify = function() { + if (!this.sigError()) { + this.verified = true; + } else { + this.verified = false; + } + return this; +}; + +ECDSA.sign = function(hashbuf, privkey, endian) { + return ECDSA().set({ + hashbuf: hashbuf, + endian: endian, + privkey: privkey + }).sign().sig; +}; + +ECDSA.verify = function(hashbuf, sig, pubkey, endian) { + return ECDSA().set({ + hashbuf: hashbuf, + endian: endian, + sig: sig, + pubkey: pubkey + }).verify().verified; +}; + +module.exports = ECDSA; + +}).call(this,require("buffer").Buffer) +},{"../publickey":289,"../util/buffer":308,"../util/preconditions":310,"./bn":271,"./hash":273,"./point":274,"./random":275,"./signature":276,"buffer":146,"lodash":311}],273:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var crypto = require('crypto'); +var BufferUtil = require('../util/buffer'); +var $ = require('../util/preconditions'); + +var Hash = module.exports; + +Hash.sha1 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('sha1').update(buf).digest(); +}; + +Hash.sha1.blocksize = 512; + +Hash.sha256 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('sha256').update(buf).digest(); +}; + +Hash.sha256.blocksize = 512; + +Hash.sha256sha256 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return Hash.sha256(Hash.sha256(buf)); +}; + +Hash.ripemd160 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('ripemd160').update(buf).digest(); +}; + +Hash.sha256ripemd160 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return Hash.ripemd160(Hash.sha256(buf)); +}; + +Hash.sha512 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('sha512').update(buf).digest(); +}; + +Hash.sha512.blocksize = 1024; + +Hash.hmac = function(hashf, data, key) { + //http://en.wikipedia.org/wiki/Hash-based_message_authentication_code + //http://tools.ietf.org/html/rfc4868#section-2 + $.checkArgument(BufferUtil.isBuffer(data)); + $.checkArgument(BufferUtil.isBuffer(key)); + $.checkArgument(hashf.blocksize); + + var blocksize = hashf.blocksize / 8; + + if (key.length > blocksize) { + key = hashf(key); + } else if (key < blocksize) { + var fill = Buffer.alloc(blocksize); + fill.fill(0); + key.copy(fill); + key = fill; + } + + var o_key = Buffer.alloc(blocksize); + o_key.fill(0x5c); + + var i_key = Buffer.alloc(blocksize); + i_key.fill(0x36); + + var o_key_pad = Buffer.alloc(blocksize); + var i_key_pad = Buffer.alloc(blocksize); + for (var i = 0; i < blocksize; i++) { + o_key_pad[i] = o_key[i] ^ key[i]; + i_key_pad[i] = i_key[i] ^ key[i]; + } + + return hashf(Buffer.concat([o_key_pad, hashf(Buffer.concat([i_key_pad, data]))])); +}; + +Hash.sha256hmac = function(data, key) { + return Hash.hmac(Hash.sha256, data, key); +}; + +Hash.sha512hmac = function(data, key) { + return Hash.hmac(Hash.sha512, data, key); +}; + +}).call(this,require("buffer").Buffer) +},{"../util/buffer":308,"../util/preconditions":310,"buffer":146,"crypto":243}],274:[function(require,module,exports){ +(function (Buffer){ +'use strict' + +var BN = require('./bn') +var BufferUtil = require('../util/buffer') + +var EC = require('elliptic').ec +var ec = new EC('p256') +var ecPoint = ec.curve.point.bind(ec.curve) +var ecPointFromX = ec.curve.pointFromX.bind(ec.curve) + +/** + * + * Instantiate a valid secp256k1 Point from the X and Y coordinates. + * + * @param {BN|String} x - The X coordinate + * @param {BN|String} y - The Y coordinate + * @link https://github.com/indutny/elliptic + * @augments elliptic.curve.point + * @throws {Error} A validation error if exists + * @returns {Point} An instance of Point + * @constructor + */ +var Point = function Point(x, y, isRed) { + try { + var point = ecPoint(x, y, isRed) + } catch (e) { + throw new Error('Invalid Point') + } + point.validate() + return point +} + +Point.prototype = Object.getPrototypeOf(ec.curve.point()) + +/** + * + * Instantiate a valid secp256k1 Point from only the X coordinate + * + * @param {boolean} odd - If the Y coordinate is odd + * @param {BN|String} x - The X coordinate + * @throws {Error} A validation error if exists + * @returns {Point} An instance of Point + */ +Point.fromX = function fromX(odd, x) { + try { + var point = ecPointFromX(x, odd) + } catch (e) { + throw new Error('Invalid X') + } + point.validate() + return point +} + +/** + * + * Will return a secp256k1 ECDSA base point. + * + * @link https://en.bitcoin.it/wiki/Secp256k1 + * @returns {Point} An instance of the base point. + */ +Point.getG = function getG() { + return ec.curve.g +} + +/** + * + * Will return the max of range of valid private keys as governed by the secp256k1 ECDSA standard. + * + * @link https://en.bitcoin.it/wiki/Private_key#Range_of_valid_ECDSA_private_keys + * @returns {BN} A BN instance of the number of points on the curve + */ +Point.getN = function getN() { + return new BN(ec.curve.n.toArray()) +} + +Point.prototype._getX = Point.prototype.getX + +/** + * + * Will return the X coordinate of the Point + * + * @returns {BN} A BN instance of the X coordinate + */ +Point.prototype.getX = function getX() { + return new BN(this._getX().toArray()) +} + +Point.prototype._getY = Point.prototype.getY + +/** + * + * Will return the Y coordinate of the Point + * + * @returns {BN} A BN instance of the Y coordinate + */ +Point.prototype.getY = function getY() { + return new BN(this._getY().toArray()) +} + +/** + * + * Will determine if the point is valid + * + * @link https://www.iacr.org/archive/pkc2003/25670211/25670211.pdf + * @param {Point} An instance of Point + * @throws {Error} A validation error if exists + * @returns {Point} An instance of the same Point + */ +Point.prototype.validate = function validate() { + if (this.isInfinity()) { + throw new Error('Point cannot be equal to Infinity') + } + + var p2 + try { + p2 = ecPointFromX(this.getX(), this.getY().isOdd()) + } catch (e) { + throw new Error('Point does not lie on the curve') + } + + if (p2.y.cmp(this.y) !== 0) { + throw new Error('Invalid y value for curve.') + } + + //todo: needs test case + if (!this.mul(Point.getN()).isInfinity()) { + throw new Error('Point times N must be infinity') + } + + return this +} + +Point.pointToCompressed = function pointToCompressed(point) { + var xbuf = point.getX().toBuffer({ size: 32 }) + var ybuf = point.getY().toBuffer({ size: 32 }) + + var prefix + var odd = ybuf[ybuf.length - 1] % 2 + if (odd) { + prefix = Buffer.from([0x03]) + } else { + prefix = Buffer.from([0x02]) + } + return BufferUtil.concat([prefix, xbuf]) +} + +module.exports = Point + +}).call(this,require("buffer").Buffer) +},{"../util/buffer":308,"./bn":271,"buffer":146,"elliptic":317}],275:[function(require,module,exports){ +(function (process,Buffer){ +'use strict'; + +function Random() { +} + +/* secure random bytes that sometimes throws an error due to lack of entropy */ +Random.getRandomBuffer = function(size) { + if (process.browser) + return Random.getRandomBufferBrowser(size); + else + return Random.getRandomBufferNode(size); +}; + +Random.getRandomBufferNode = function(size) { + var crypto = require('crypto'); + return crypto.randomBytes(size); +}; + +Random.getRandomBufferBrowser = function(size) { + if (!window.crypto && !window.msCrypto) + throw new Error('window.crypto not available'); + + if (window.crypto && window.crypto.getRandomValues) + var crypto = window.crypto; + else if (window.msCrypto && window.msCrypto.getRandomValues) //internet explorer + var crypto = window.msCrypto; + else + throw new Error('window.crypto.getRandomValues not available'); + + var bbuf = new Uint8Array(size); + crypto.getRandomValues(bbuf); + var buf = Buffer.from(bbuf); + + return buf; +}; + +/* insecure random bytes, but it never fails */ +Random.getPseudoRandomBuffer = function(size) { + var b32 = 0x100000000; + var b = Buffer.alloc(size); + var r; + + for (var i = 0; i <= size; i++) { + var j = Math.floor(i / 4); + var k = i - j * 4; + if (k === 0) { + r = Math.random() * b32; + b[i] = r & 0xff; + } else { + b[i] = (r = r >>> 8) & 0xff; + } + } + + return b; +}; + +module.exports = Random; + +}).call(this,require('_process'),require("buffer").Buffer) +},{"_process":678,"buffer":146,"crypto":243}],276:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var BN = require('./bn'); +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); + +var Signature = function Signature(r, s) { + if (!(this instanceof Signature)) { + return new Signature(r, s); + } + if (r instanceof BN) { + this.set({ + r: r, + s: s + }); + } else if (r) { + var obj = r; + this.set(obj); + } +}; + +/* jshint maxcomplexity: 7 */ +Signature.prototype.set = function(obj) { + this.r = obj.r || this.r || undefined; + this.s = obj.s || this.s || undefined; + + this.i = typeof obj.i !== 'undefined' ? obj.i : this.i; //public key recovery parameter in range [0, 3] + this.compressed = typeof obj.compressed !== 'undefined' ? + obj.compressed : this.compressed; //whether the recovered pubkey is compressed + this.nhashtype = obj.nhashtype || this.nhashtype || undefined; + return this; +}; + +Signature.fromCompact = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf), 'Argument is expected to be a Buffer'); + + var sig = new Signature(); + + var compressed = true; + var i = buf.slice(0, 1)[0] - 27 - 4; + if (i < 0) { + compressed = false; + i = i + 4; + } + + var b2 = buf.slice(1, 33); + var b3 = buf.slice(33, 65); + + $.checkArgument(i === 0 || i === 1 || i === 2 || i === 3, new Error('i must be 0, 1, 2, or 3')); + $.checkArgument(b2.length === 32, new Error('r must be 32 bytes')); + $.checkArgument(b3.length === 32, new Error('s must be 32 bytes')); + + sig.compressed = compressed; + sig.i = i; + sig.r = BN.fromBuffer(b2); + sig.s = BN.fromBuffer(b3); + + return sig; +}; + +Signature.fromDER = Signature.fromBuffer = function(buf, strict) { + var obj = Signature.parseDER(buf, strict); + var sig = new Signature(); + + sig.r = obj.r; + sig.s = obj.s; + + return sig; +}; + +// The format used in a tx +Signature.fromTxFormat = function(buf) { + var nhashtype = buf.readUInt8(buf.length - 1); + var derbuf = buf.slice(0, buf.length - 1); + var sig = new Signature.fromDER(derbuf, false); + sig.nhashtype = nhashtype; + return sig; +}; + +Signature.fromString = function(str) { + var buf = Buffer.from(str, 'hex'); + return Signature.fromDER(buf); +}; + + +/** + * In order to mimic the non-strict DER encoding of OpenSSL, set strict = false. + */ +Signature.parseDER = function(buf, strict) { + $.checkArgument(BufferUtil.isBuffer(buf), new Error('DER formatted signature should be a buffer')); + if (_.isUndefined(strict)) { + strict = true; + } + + var header = buf[0]; + $.checkArgument(header === 0x30, new Error('Header byte should be 0x30')); + + var length = buf[1]; + var buflength = buf.slice(2).length; + $.checkArgument(!strict || length === buflength, new Error('Length byte should length of what follows')); + + length = length < buflength ? length : buflength; + + var rheader = buf[2 + 0]; + $.checkArgument(rheader === 0x02, new Error('Integer byte for r should be 0x02')); + + var rlength = buf[2 + 1]; + var rbuf = buf.slice(2 + 2, 2 + 2 + rlength); + var r = BN.fromBuffer(rbuf); + var rneg = buf[2 + 1 + 1] === 0x00 ? true : false; + $.checkArgument(rlength === rbuf.length, new Error('Length of r incorrect')); + + var sheader = buf[2 + 2 + rlength + 0]; + $.checkArgument(sheader === 0x02, new Error('Integer byte for s should be 0x02')); + + var slength = buf[2 + 2 + rlength + 1]; + var sbuf = buf.slice(2 + 2 + rlength + 2, 2 + 2 + rlength + 2 + slength); + var s = BN.fromBuffer(sbuf); + var sneg = buf[2 + 2 + rlength + 2 + 2] === 0x00 ? true : false; + $.checkArgument(slength === sbuf.length, new Error('Length of s incorrect')); + + var sumlength = 2 + 2 + rlength + 2 + slength; + $.checkArgument(length === sumlength - 2, new Error('Length of signature incorrect')); + + var obj = { + header: header, + length: length, + rheader: rheader, + rlength: rlength, + rneg: rneg, + rbuf: rbuf, + r: r, + sheader: sheader, + slength: slength, + sneg: sneg, + sbuf: sbuf, + s: s + }; + + return obj; +}; + + +Signature.prototype.toCompact = function(i, compressed) { + i = typeof i === 'number' ? i : this.i; + compressed = typeof compressed === 'boolean' ? compressed : this.compressed; + + if (!(i === 0 || i === 1 || i === 2 || i === 3)) { + throw new Error('i must be equal to 0, 1, 2, or 3'); + } + + var val = i + 27 + 4; + if (compressed === false) { + val = val - 4; + } + var b1 = Buffer.from([val]); + var b2 = this.r.toBuffer({ + size: 32 + }); + var b3 = this.s.toBuffer({ + size: 32 + }); + return Buffer.concat([b1, b2, b3]); +}; + +Signature.prototype.toBuffer = Signature.prototype.toDER = function() { + var rnbuf = this.r.toBuffer(); + var snbuf = this.s.toBuffer(); + + var rneg = rnbuf[0] & 0x80 ? true : false; + var sneg = snbuf[0] & 0x80 ? true : false; + + var rbuf = rneg ? Buffer.concat([Buffer.from([0x00]), rnbuf]) : rnbuf; + var sbuf = sneg ? Buffer.concat([Buffer.from([0x00]), snbuf]) : snbuf; + + var rlength = rbuf.length; + var slength = sbuf.length; + var length = 2 + rlength + 2 + slength; + var rheader = 0x02; + var sheader = 0x02; + var header = 0x30; + + var der = Buffer.concat([Buffer.from([header, length, rheader, rlength]), rbuf, Buffer.from([sheader, slength]), sbuf]); + return der; +}; + +Signature.prototype.toString = function() { + var buf = this.toDER(); + return buf.toString('hex'); +}; + +/** + * This function is translated from bitcoind's IsDERSignature and is used in + * the script interpreter. This "DER" format actually includes an extra byte, + * the nhashtype, at the end. It is really the tx format, not DER format. + * + * A canonical signature exists of: [30] [total len] [02] [len R] [R] [02] [len S] [S] [hashtype] + * Where R and S are not negative (their first byte has its highest bit not set), and not + * excessively padded (do not start with a 0 byte, unless an otherwise negative number follows, + * in which case a single 0 byte is necessary and even required). + * + * See https://bitcointalk.org/index.php?topic=8392.msg127623#msg127623 + */ +Signature.isTxDER = function(buf) { + if (buf.length < 9) { + // Non-canonical signature: too short + return false; + } + if (buf.length > 73) { + // Non-canonical signature: too long + return false; + } + if (buf[0] !== 0x30) { + // Non-canonical signature: wrong type + return false; + } + if (buf[1] !== buf.length - 3) { + // Non-canonical signature: wrong length marker + return false; + } + var nLenR = buf[3]; + if (5 + nLenR >= buf.length) { + // Non-canonical signature: S length misplaced + return false; + } + var nLenS = buf[5 + nLenR]; + if ((nLenR + nLenS + 7) !== buf.length) { + // Non-canonical signature: R+S length mismatch + return false; + } + + var R = buf.slice(4); + if (buf[4 - 2] !== 0x02) { + // Non-canonical signature: R value type mismatch + return false; + } + if (nLenR === 0) { + // Non-canonical signature: R length is zero + return false; + } + if (R[0] & 0x80) { + // Non-canonical signature: R value negative + return false; + } + if (nLenR > 1 && (R[0] === 0x00) && !(R[1] & 0x80)) { + // Non-canonical signature: R value excessively padded + return false; + } + + var S = buf.slice(6 + nLenR); + if (buf[6 + nLenR - 2] !== 0x02) { + // Non-canonical signature: S value type mismatch + return false; + } + if (nLenS === 0) { + // Non-canonical signature: S length is zero + return false; + } + if (S[0] & 0x80) { + // Non-canonical signature: S value negative + return false; + } + if (nLenS > 1 && (S[0] === 0x00) && !(S[1] & 0x80)) { + // Non-canonical signature: S value excessively padded + return false; + } + return true; +}; + +/** + * Compares to bitcoind's IsLowDERSignature + * See also ECDSA signature algorithm which enforces this. + * See also BIP 62, "low S values in signatures" + */ +Signature.prototype.hasLowS = function() { + if (this.s.lt(new BN(1)) || + this.s.gt(new BN('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex'))) { + return false; + } + return true; +}; + +/** + * @returns true if the nhashtype is exactly equal to one of the standard options or combinations thereof. + * Translated from bitcoind's IsDefinedHashtypeSignature + */ +Signature.prototype.hasDefinedHashtype = function() { + if (!JSUtil.isNaturalNumber(this.nhashtype)) { + return false; + } + // accept with or without Signature.SIGHASH_ANYONECANPAY by ignoring the bit + var temp = this.nhashtype & ~Signature.SIGHASH_ANYONECANPAY; + if (temp < Signature.SIGHASH_ALL || temp > Signature.SIGHASH_SINGLE) { + return false; + } + return true; +}; + +Signature.prototype.toTxFormat = function() { + var derbuf = this.toDER(); + var buf = Buffer.alloc(1); + buf.writeUInt8(this.nhashtype, 0); + return Buffer.concat([derbuf, buf]); +}; + +Signature.SIGHASH_ALL = 0x01; +Signature.SIGHASH_NONE = 0x02; +Signature.SIGHASH_SINGLE = 0x03; +Signature.SIGHASH_ANYONECANPAY = 0x80; + +module.exports = Signature; + +}).call(this,require("buffer").Buffer) +},{"../util/buffer":308,"../util/js":309,"../util/preconditions":310,"./bn":271,"buffer":146,"lodash":311}],277:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var bs58 = require('bs58'); +var buffer = require('buffer'); + +var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'.split(''); + +var Base58 = function Base58(obj) { + /* jshint maxcomplexity: 8 */ + if (!(this instanceof Base58)) { + return new Base58(obj); + } + if (Buffer.isBuffer(obj)) { + var buf = obj; + this.fromBuffer(buf); + } else if (typeof obj === 'string') { + var str = obj; + this.fromString(str); + } else if (obj) { + this.set(obj); + } +}; + +Base58.validCharacters = function validCharacters(chars) { + if (buffer.Buffer.isBuffer(chars)) { + chars = chars.toString(); + } + return _.every(_.map(chars, function(char) { return _.includes(ALPHABET, char); })); +}; + +Base58.prototype.set = function(obj) { + this.buf = obj.buf || this.buf || undefined; + return this; +}; + +Base58.encode = function(buf) { + if (!buffer.Buffer.isBuffer(buf)) { + throw new Error('Input should be a buffer'); + } + return bs58.encode(buf); +}; + +Base58.decode = function(str) { + if (typeof str !== 'string') { + throw new Error('Input should be a string'); + } + return Buffer.from(bs58.decode(str)); +}; + +Base58.prototype.fromBuffer = function(buf) { + this.buf = buf; + return this; +}; + +Base58.prototype.fromString = function(str) { + var buf = Base58.decode(str); + this.buf = buf; + return this; +}; + +Base58.prototype.toBuffer = function() { + return this.buf; +}; + +Base58.prototype.toString = function() { + return Base58.encode(this.buf); +}; + +module.exports = Base58; + +}).call(this,require("buffer").Buffer) +},{"bs58":138,"buffer":146,"lodash":311}],278:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var Base58 = require('./base58'); +var buffer = require('buffer'); +var sha256sha256 = require('../crypto/hash').sha256sha256; + +var Base58Check = function Base58Check(obj) { + if (!(this instanceof Base58Check)) + return new Base58Check(obj); + if (Buffer.isBuffer(obj)) { + var buf = obj; + this.fromBuffer(buf); + } else if (typeof obj === 'string') { + var str = obj; + this.fromString(str); + } else if (obj) { + this.set(obj); + } +}; + +Base58Check.prototype.set = function(obj) { + this.buf = obj.buf || this.buf || undefined; + return this; +}; + +Base58Check.validChecksum = function validChecksum(data, checksum) { + if (_.isString(data)) { + data = new buffer.Buffer(Base58.decode(data)); + } + if (_.isString(checksum)) { + checksum = new buffer.Buffer(Base58.decode(checksum)); + } + if (!checksum) { + checksum = data.slice(-4); + data = data.slice(0, -4); + } + return Base58Check.checksum(data).toString('hex') === checksum.toString('hex'); +}; + +Base58Check.decode = function(s) { + if (typeof s !== 'string') + throw new Error('Input must be a string'); + + var buf = Buffer.from(Base58.decode(s)); + + if (buf.length < 4) + throw new Error("Input string too short"); + + var data = buf.slice(0, -4); + var csum = buf.slice(-4); + + var hash = sha256sha256(data); + var hash4 = hash.slice(0, 4); + + if (csum.toString('hex') !== hash4.toString('hex')) + throw new Error("Checksum mismatch"); + + return data; +}; + +Base58Check.checksum = function(buffer) { + return sha256sha256(buffer).slice(0, 4); +}; + +Base58Check.encode = function(buf) { + if (!Buffer.isBuffer(buf)) + throw new Error('Input must be a buffer'); + var checkedBuf = Buffer.alloc(buf.length + 4); + var hash = Base58Check.checksum(buf); + buf.copy(checkedBuf); + hash.copy(checkedBuf, buf.length); + return Base58.encode(checkedBuf); +}; + +Base58Check.prototype.fromBuffer = function(buf) { + this.buf = buf; + return this; +}; + +Base58Check.prototype.fromString = function(str) { + var buf = Base58Check.decode(str); + this.buf = buf; + return this; +}; + +Base58Check.prototype.toBuffer = function() { + return this.buf; +}; + +Base58Check.prototype.toString = function() { + return Base58Check.encode(this.buf); +}; + +module.exports = Base58Check; + +}).call(this,require("buffer").Buffer) +},{"../crypto/hash":273,"./base58":277,"buffer":146,"lodash":311}],279:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var BufferUtil = require('../util/buffer'); +var BN = require('../crypto/bn'); + +var BufferReader = function BufferReader(buf) { + if (!(this instanceof BufferReader)) { + return new BufferReader(buf); + } + if (_.isUndefined(buf)) { + return; + } + if (Buffer.isBuffer(buf)) { + this.set({ + buf: buf + }); + } else if (_.isString(buf)) { + this.set({ + buf: Buffer.from(buf, 'hex'), + }); + } else if (_.isObject(buf)) { + var obj = buf; + this.set(obj); + } else { + throw new TypeError('Unrecognized argument for BufferReader'); + } +}; + +BufferReader.prototype.set = function(obj) { + this.buf = obj.buf || this.buf || undefined; + this.pos = obj.pos || this.pos || 0; + return this; +}; + +BufferReader.prototype.eof = function() { + return this.pos >= this.buf.length; +}; + +BufferReader.prototype.finished = BufferReader.prototype.eof; + +BufferReader.prototype.read = function(len) { + $.checkArgument(!_.isUndefined(len), 'Must specify a length'); + var buf = this.buf.slice(this.pos, this.pos + len); + this.pos = this.pos + len; + return buf; +}; + +BufferReader.prototype.readAll = function() { + var buf = this.buf.slice(this.pos, this.buf.length); + this.pos = this.buf.length; + return buf; +}; + +BufferReader.prototype.readUInt8 = function() { + var val = this.buf.readUInt8(this.pos); + this.pos = this.pos + 1; + return val; +}; + +BufferReader.prototype.readUInt16BE = function() { + var val = this.buf.readUInt16BE(this.pos); + this.pos = this.pos + 2; + return val; +}; + +BufferReader.prototype.readUInt16LE = function() { + var val = this.buf.readUInt16LE(this.pos); + this.pos = this.pos + 2; + return val; +}; + +BufferReader.prototype.readUInt32BE = function() { + var val = this.buf.readUInt32BE(this.pos); + this.pos = this.pos + 4; + return val; +}; + +BufferReader.prototype.readUInt32LE = function() { + var val = this.buf.readUInt32LE(this.pos); + this.pos = this.pos + 4; + return val; +}; + +BufferReader.prototype.readInt32LE = function() { + var val = this.buf.readInt32LE(this.pos); + this.pos = this.pos + 4; + return val; +}; + +BufferReader.prototype.readUInt64BEBN = function() { + var buf = this.buf.slice(this.pos, this.pos + 8); + var bn = BN.fromBuffer(buf); + this.pos = this.pos + 8; + return bn; +}; + +BufferReader.prototype.readUInt64LEBN = function() { + var second = this.buf.readUInt32LE(this.pos); + var first = this.buf.readUInt32LE(this.pos + 4); + var combined = (first * 0x100000000) + second; + // Instantiating an instance of BN with a number is faster than with an + // array or string. However, the maximum safe number for a double precision + // floating point is 2 ^ 52 - 1 (0x1fffffffffffff), thus we can safely use + // non-floating point numbers less than this amount (52 bits). And in the case + // that the number is larger, we can instatiate an instance of BN by passing + // an array from the buffer (slower) and specifying the endianness. + var bn; + if (combined <= 0x1fffffffffffff) { + bn = new BN(combined); + } else { + var data = Array.prototype.slice.call(this.buf, this.pos, this.pos + 8); + bn = new BN(data, 10, 'le'); + } + this.pos = this.pos + 8; + return bn; +}; + +BufferReader.prototype.readVarintNum = function() { + var first = this.readUInt8(); + switch (first) { + case 0xFD: + return this.readUInt16LE(); + case 0xFE: + return this.readUInt32LE(); + case 0xFF: + var bn = this.readUInt64LEBN(); + var n = bn.toNumber(); + if (n <= Math.pow(2, 53)) { + return n; + } else { + throw new Error('number too large to retain precision - use readVarintBN'); + } + break; + default: + return first; + } +}; + +/** + * reads a length prepended buffer + */ +BufferReader.prototype.readVarLengthBuffer = function() { + var len = this.readVarintNum(); + var buf = this.read(len); + $.checkState(buf.length === len, 'Invalid length while reading varlength buffer. ' + + 'Expected to read: ' + len + ' and read ' + buf.length); + return buf; +}; + +BufferReader.prototype.readVarintBuf = function() { + var first = this.buf.readUInt8(this.pos); + switch (first) { + case 0xFD: + return this.read(1 + 2); + case 0xFE: + return this.read(1 + 4); + case 0xFF: + return this.read(1 + 8); + default: + return this.read(1); + } +}; + +BufferReader.prototype.readVarintBN = function() { + var first = this.readUInt8(); + switch (first) { + case 0xFD: + return new BN(this.readUInt16LE()); + case 0xFE: + return new BN(this.readUInt32LE()); + case 0xFF: + return this.readUInt64LEBN(); + default: + return new BN(first); + } +}; + +BufferReader.prototype.reverse = function() { + var buf = Buffer.alloc(this.buf.length); + for (var i = 0; i < buf.length; i++) { + buf[i] = this.buf[this.buf.length - 1 - i]; + } + this.buf = buf; + return this; +}; + +BufferReader.prototype.readReverse = function(len) { + if (_.isUndefined(len)) { + len = this.buf.length; + } + var buf = this.buf.slice(this.pos, this.pos + len); + this.pos = this.pos + len; + return BufferUtil.reverse(buf); +}; + +module.exports = BufferReader; + +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":271,"../util/buffer":308,"../util/preconditions":310,"buffer":146,"lodash":311}],280:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var bufferUtil = require('../util/buffer'); +var assert = require('assert'); + +var BufferWriter = function BufferWriter(obj) { + if (!(this instanceof BufferWriter)) + return new BufferWriter(obj); + this.bufLen = 0; + if (obj) + this.set(obj); + else + this.bufs = []; +}; + +BufferWriter.prototype.set = function(obj) { + this.bufs = obj.bufs || this.bufs || []; + this.bufLen = this.bufs.reduce(function(prev, buf){ return prev + buf.length; }, 0); + return this; +}; + +BufferWriter.prototype.toBuffer = function() { + return this.concat(); +}; + +BufferWriter.prototype.concat = function() { + return Buffer.concat(this.bufs, this.bufLen); +}; + +BufferWriter.prototype.write = function(buf) { + assert(bufferUtil.isBuffer(buf)); + this.bufs.push(buf); + this.bufLen += buf.length; + return this; +}; + +BufferWriter.prototype.writeReverse = function(buf) { + assert(bufferUtil.isBuffer(buf)); + this.bufs.push(bufferUtil.reverse(buf)); + this.bufLen += buf.length; + return this; +}; + +BufferWriter.prototype.writeUInt8 = function(n) { + var buf = Buffer.alloc(1); + buf.writeUInt8(n, 0); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeUInt16BE = function(n) { + var buf = Buffer.alloc(2); + buf.writeUInt16BE(n, 0); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeUInt16LE = function(n) { + var buf = Buffer.alloc(2); + buf.writeUInt16LE(n, 0); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeUInt32BE = function(n) { + var buf = Buffer.alloc(4); + buf.writeUInt32BE(n, 0); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeInt32LE = function(n) { + var buf = Buffer.alloc(4); + buf.writeInt32LE(n, 0); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeUInt32LE = function(n) { + var buf = Buffer.alloc(4); + buf.writeUInt32LE(n, 0); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeUInt64BEBN = function(bn) { + var buf = bn.toBuffer({size: 8}); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeUInt64LEBN = function(bn) { + var buf = bn.toBuffer({size: 8}); + this.writeReverse(buf); + return this; +}; + +BufferWriter.prototype.writeVarintNum = function(n) { + var buf = BufferWriter.varintBufNum(n); + this.write(buf); + return this; +}; + +BufferWriter.prototype.writeVarintBN = function(bn) { + var buf = BufferWriter.varintBufBN(bn); + this.write(buf); + return this; +}; + +BufferWriter.varintBufNum = function(n) { + var buf = undefined; + if (n < 253) { + buf = Buffer.alloc(1); + buf.writeUInt8(n, 0); + } else if (n < 0x10000) { + buf = Buffer.alloc(1 + 2); + buf.writeUInt8(253, 0); + buf.writeUInt16LE(n, 1); + } else if (n < 0x100000000) { + buf = Buffer.alloc(1 + 4); + buf.writeUInt8(254, 0); + buf.writeUInt32LE(n, 1); + } else { + buf = Buffer.alloc(1 + 8); + buf.writeUInt8(255, 0); + buf.writeInt32LE(n & -1, 1); + buf.writeUInt32LE(Math.floor(n / 0x100000000), 5); + } + return buf; +}; + +BufferWriter.varintBufBN = function(bn) { + var buf = undefined; + var n = bn.toNumber(); + if (n < 253) { + buf = Buffer.alloc(1); + buf.writeUInt8(n, 0); + } else if (n < 0x10000) { + buf = Buffer.alloc(1 + 2); + buf.writeUInt8(253, 0); + buf.writeUInt16LE(n, 1); + } else if (n < 0x100000000) { + buf = Buffer.alloc(1 + 4); + buf.writeUInt8(254, 0); + buf.writeUInt32LE(n, 1); + } else { + var bw = new BufferWriter(); + bw.writeUInt8(255); + bw.writeUInt64LEBN(bn); + var buf = bw.concat(); + } + return buf; +}; + +module.exports = BufferWriter; + +}).call(this,require("buffer").Buffer) +},{"../util/buffer":308,"assert":26,"buffer":146}],281:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var BufferWriter = require('./bufferwriter'); +var BufferReader = require('./bufferreader'); +var BN = require('../crypto/bn'); + +var Varint = function Varint(buf) { + if (!(this instanceof Varint)) + return new Varint(buf); + if (Buffer.isBuffer(buf)) { + this.buf = buf; + } else if (typeof buf === 'number') { + var num = buf; + this.fromNumber(num); + } else if (buf instanceof BN) { + var bn = buf; + this.fromBN(bn); + } else if (buf) { + var obj = buf; + this.set(obj); + } +}; + +Varint.prototype.set = function(obj) { + this.buf = obj.buf || this.buf; + return this; +}; + +Varint.prototype.fromString = function(str) { + this.set({ + buf: Buffer.from(str, 'hex') + }); + return this; +}; + +Varint.prototype.toString = function() { + return this.buf.toString('hex'); +}; + +Varint.prototype.fromBuffer = function(buf) { + this.buf = buf; + return this; +}; + +Varint.prototype.fromBufferReader = function(br) { + this.buf = br.readVarintBuf(); + return this; +}; + +Varint.prototype.fromBN = function(bn) { + this.buf = BufferWriter().writeVarintBN(bn).concat(); + return this; +}; + +Varint.prototype.fromNumber = function(num) { + this.buf = BufferWriter().writeVarintNum(num).concat(); + return this; +}; + +Varint.prototype.toBuffer = function() { + return this.buf; +}; + +Varint.prototype.toBN = function() { + return BufferReader(this.buf).readVarintBN(); +}; + +Varint.prototype.toNumber = function() { + return BufferReader(this.buf).readVarintNum(); +}; + +module.exports = Varint; + +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":271,"./bufferreader":279,"./bufferwriter":280,"buffer":146}],282:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); + +function format(message, args) { + return message + .replace('{0}', args[0]) + .replace('{1}', args[1]) + .replace('{2}', args[2]); +} +var traverseNode = function(parent, errorDefinition) { + var NodeError = function() { + if (_.isString(errorDefinition.message)) { + this.message = format(errorDefinition.message, arguments); + } else if (_.isFunction(errorDefinition.message)) { + this.message = errorDefinition.message.apply(null, arguments); + } else { + throw new Error('Invalid error definition for ' + errorDefinition.name); + } + this.stack = this.message + '\n' + (new Error()).stack; + }; + NodeError.prototype = Object.create(parent.prototype); + NodeError.prototype.name = parent.prototype.name + errorDefinition.name; + parent[errorDefinition.name] = NodeError; + if (errorDefinition.errors) { + childDefinitions(NodeError, errorDefinition.errors); + } + return NodeError; +}; + +/* jshint latedef: false */ +var childDefinitions = function(parent, childDefinitions) { + _.each(childDefinitions, function(childDefinition) { + traverseNode(parent, childDefinition); + }); +}; +/* jshint latedef: true */ + +var traverseRoot = function(parent, errorsDefinition) { + childDefinitions(parent, errorsDefinition); + return parent; +}; + + +var bitcore = {}; +bitcore.Error = function() { + this.message = 'Internal error'; + this.stack = this.message + '\n' + (new Error()).stack; +}; +bitcore.Error.prototype = Object.create(Error.prototype); +bitcore.Error.prototype.name = 'bitcore.Error'; + + +var data = require('./spec'); +traverseRoot(bitcore.Error, data); + +module.exports = bitcore.Error; + +module.exports.extend = function(spec) { + return traverseNode(bitcore.Error, spec); +}; + +},{"./spec":283,"lodash":311}],283:[function(require,module,exports){ +'use strict'; + +var docsURL = 'http://bitcore.io/'; + +module.exports = [{ + name: 'InvalidB58Char', + message: 'Invalid Base58 character: {0} in {1}' +}, { + name: 'InvalidB58Checksum', + message: 'Invalid Base58 checksum for {0}' +}, { + name: 'InvalidNetwork', + message: 'Invalid version for network: got {0}' +}, { + name: 'InvalidState', + message: 'Invalid state: {0}' +}, { + name: 'NotImplemented', + message: 'Function {0} was not implemented yet' +}, { + name: 'InvalidNetworkArgument', + message: 'Invalid network: must be "livenet" or "testnet", got {0}' +}, { + name: 'InvalidArgument', + message: function() { + return 'Invalid Argument' + (arguments[0] ? (': ' + arguments[0]) : '') + + (arguments[1] ? (' Documentation: ' + docsURL + arguments[1]) : ''); + } +}, { + name: 'AbstractMethodInvoked', + message: 'Abstract Method Invocation: {0}' +}, { + name: 'InvalidArgumentType', + message: function() { + return 'Invalid Argument for ' + arguments[2] + ', expected ' + arguments[1] + ' but got ' + typeof arguments[0]; + } +}, { + name: 'Unit', + message: 'Internal Error on Unit {0}', + errors: [{ + 'name': 'UnknownCode', + 'message': 'Unrecognized unit code: {0}' + }, { + 'name': 'InvalidRate', + 'message': 'Invalid exchange rate: {0}' + }] +}, { + name: 'MerkleBlock', + message: 'Internal Error on MerkleBlock {0}', + errors: [{ + 'name': 'InvalidMerkleTree', + 'message': 'This MerkleBlock contain an invalid Merkle Tree' + }] +}, { + name: 'Transaction', + message: 'Internal Error on Transaction {0}', + errors: [{ + name: 'Input', + message: 'Internal Error on Input {0}', + errors: [{ + name: 'MissingScript', + message: 'Need a script to create an input' + }, { + name: 'UnsupportedScript', + message: 'Unsupported input script type: {0}' + }, { + name: 'MissingPreviousOutput', + message: 'No previous output information.' + }] + }, { + name: 'NeedMoreInfo', + message: '{0}' + }, { + name: 'InvalidSorting', + message: 'The sorting function provided did not return the change output as one of the array elements' + }, { + name: 'InvalidOutputAmountSum', + message: '{0}' + }, { + name: 'MissingSignatures', + message: 'Some inputs have not been fully signed' + }, { + name: 'InvalidIndex', + message: 'Invalid index: {0} is not between 0, {1}' + }, { + name: 'UnableToVerifySignature', + message: 'Unable to verify signature: {0}' + }, { + name: 'DustOutputs', + message: 'Dust amount detected in one output' + }, { + name: 'InvalidSatoshis', + message: 'Output satoshis are invalid', + }, { + name: 'FeeError', + message: 'Internal Error on Fee {0}', + errors: [{ + name: 'TooSmall', + message: 'Fee is too small: {0}', + }, { + name: 'TooLarge', + message: 'Fee is too large: {0}', + }, { + name: 'Different', + message: 'Unspent value is different from specified fee: {0}', + }] + }, { + name: 'ChangeAddressMissing', + message: 'Change address is missing' + }, { + name: 'BlockHeightTooHigh', + message: 'Block Height can be at most 2^32 -1' + }, { + name: 'NLockTimeOutOfRange', + message: 'Block Height can only be between 0 and 499 999 999' + }, { + name: 'LockTimeTooEarly', + message: 'Lock Time can\'t be earlier than UNIX date 500 000 000' + }] +}, { + name: 'Script', + message: 'Internal Error on Script {0}', + errors: [{ + name: 'UnrecognizedAddress', + message: 'Expected argument {0} to be an address' + }, { + name: 'CantDeriveAddress', + message: 'Can\'t derive address associated with script {0}, needs to be p2pkh in, p2pkh out, p2sh in, or p2sh out.' + }, { + name: 'InvalidBuffer', + message: 'Invalid script buffer: can\'t parse valid script from given buffer {0}' + }] +}, { + name: 'HDPrivateKey', + message: 'Internal Error on HDPrivateKey {0}', + errors: [{ + name: 'InvalidDerivationArgument', + message: 'Invalid derivation argument {0}, expected string, or number and boolean' + }, { + name: 'InvalidEntropyArgument', + message: 'Invalid entropy: must be an hexa string or binary buffer, got {0}', + errors: [{ + name: 'TooMuchEntropy', + message: 'Invalid entropy: more than 512 bits is non standard, got "{0}"' + }, { + name: 'NotEnoughEntropy', + message: 'Invalid entropy: at least 128 bits needed, got "{0}"' + }] + }, { + name: 'InvalidLength', + message: 'Invalid length for xprivkey string in {0}' + }, { + name: 'InvalidPath', + message: 'Invalid derivation path: {0}' + }, { + name: 'UnrecognizedArgument', + message: 'Invalid argument: creating a HDPrivateKey requires a string, buffer, json or object, got "{0}"' + }] +}, { + name: 'HDPublicKey', + message: 'Internal Error on HDPublicKey {0}', + errors: [{ + name: 'ArgumentIsPrivateExtended', + message: 'Argument is an extended private key: {0}' + }, { + name: 'InvalidDerivationArgument', + message: 'Invalid derivation argument: got {0}' + }, { + name: 'InvalidLength', + message: 'Invalid length for xpubkey: got "{0}"' + }, { + name: 'InvalidPath', + message: 'Invalid derivation path, it should look like: "m/1/100", got "{0}"' + }, { + name: 'InvalidIndexCantDeriveHardened', + message: 'Invalid argument: creating a hardened path requires an HDPrivateKey' + }, { + name: 'MustSupplyArgument', + message: 'Must supply an argument to create a HDPublicKey' + }, { + name: 'UnrecognizedArgument', + message: 'Invalid argument for creation, must be string, json, buffer, or object' + }] +}]; + +},{}],284:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + + +var assert = require('assert'); +var buffer = require('buffer'); +var _ = require('lodash'); +var $ = require('./util/preconditions'); + +var BN = require('./crypto/bn'); +var Base58 = require('./encoding/base58'); +var Base58Check = require('./encoding/base58check'); +var Hash = require('./crypto/hash'); +var Network = require('./networks'); +var Point = require('./crypto/point'); +var PrivateKey = require('./privatekey'); +var Random = require('./crypto/random'); + +var errors = require('./errors'); +var hdErrors = errors.HDPrivateKey; +var BufferUtil = require('./util/buffer'); +var JSUtil = require('./util/js'); + +var MINIMUM_ENTROPY_BITS = 128; +var BITS_TO_BYTES = 1 / 8; +var MAXIMUM_ENTROPY_BITS = 512; + + +/** + * Represents an instance of an hierarchically derived private key. + * + * More info on https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki + * + * @constructor + * @param {string|Buffer|Object} arg + */ +function HDPrivateKey(arg) { + /* jshint maxcomplexity: 10 */ + if (arg instanceof HDPrivateKey) { + return arg; + } + if (!(this instanceof HDPrivateKey)) { + return new HDPrivateKey(arg); + } + if (!arg) { + return this._generateRandomly(); + } + + if (Network.get(arg)) { + return this._generateRandomly(arg); + } else if (_.isString(arg) || BufferUtil.isBuffer(arg)) { + if (HDPrivateKey.isValidSerialized(arg)) { + this._buildFromSerialized(arg); + } else if (JSUtil.isValidJSON(arg)) { + this._buildFromJSON(arg); + } else if (BufferUtil.isBuffer(arg) && HDPrivateKey.isValidSerialized(arg.toString())) { + this._buildFromSerialized(arg.toString()); + } else { + throw HDPrivateKey.getSerializedError(arg); + } + } else if (_.isObject(arg)) { + this._buildFromObject(arg); + } else { + throw new hdErrors.UnrecognizedArgument(arg); + } +} + +/** + * Verifies that a given path is valid. + * + * @param {string|number} arg + * @param {boolean?} hardened + * @return {boolean} + */ +HDPrivateKey.isValidPath = function(arg, hardened) { + if (_.isString(arg)) { + var indexes = HDPrivateKey._getDerivationIndexes(arg); + return indexes !== null && _.every(indexes, HDPrivateKey.isValidPath); + } + + if (_.isNumber(arg)) { + if (arg < HDPrivateKey.Hardened && hardened === true) { + arg += HDPrivateKey.Hardened; + } + return arg >= 0 && arg < HDPrivateKey.MaxIndex; + } + + return false; +}; + +/** + * Internal function that splits a string path into a derivation index array. + * It will return null if the string path is malformed. + * It does not validate if indexes are in bounds. + * + * @param {string} path + * @return {Array} + */ +HDPrivateKey._getDerivationIndexes = function(path) { + var steps = path.split('/'); + + // Special cases: + if (_.includes(HDPrivateKey.RootElementAlias, path)) { + return []; + } + + if (!_.includes(HDPrivateKey.RootElementAlias, steps[0])) { + return null; + } + + var indexes = steps.slice(1).map(function(step) { + var isHardened = step.slice(-1) === '\''; + if (isHardened) { + step = step.slice(0, -1); + } + if (!step || step[0] === '-') { + return NaN; + } + var index = +step; // cast to number + if (isHardened) { + index += HDPrivateKey.Hardened; + } + + return index; + }); + + return _.some(indexes, isNaN) ? null : indexes; +}; + +/** + * WARNING: This method is deprecated. Use deriveChild or deriveNonCompliantChild instead. This is not BIP32 compliant + * + * + * Get a derived child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same private key), "m/0/1/40/2'/1000", where the ' quote means a hardened + * derivation. + * + * If the first argument is a number, the child with that index will be + * derived. If the second argument is truthy, the hardened version will be + * derived. See the example usage for clarification. + * + * @example + * ```javascript + * var parent = new HDPrivateKey('xprv...'); + * var child_0_1_2h = parent.derive(0).derive(1).derive(2, true); + * var copy_of_child_0_1_2h = parent.derive("m/0/1/2'"); + * assert(child_0_1_2h.xprivkey === copy_of_child_0_1_2h); + * ``` + * + * @param {string|number} arg + * @param {boolean?} hardened + */ +HDPrivateKey.prototype.derive = function(arg, hardened) { + return this.deriveNonCompliantChild(arg, hardened); +}; + +/** + * WARNING: This method will not be officially supported until v1.0.0. + * + * + * Get a derived child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same private key), "m/0/1/40/2'/1000", where the ' quote means a hardened + * derivation. + * + * If the first argument is a number, the child with that index will be + * derived. If the second argument is truthy, the hardened version will be + * derived. See the example usage for clarification. + * + * WARNING: The `nonCompliant` option should NOT be used, except for older implementation + * that used a derivation strategy that used a non-zero padded private key. + * + * @example + * ```javascript + * var parent = new HDPrivateKey('xprv...'); + * var child_0_1_2h = parent.deriveChild(0).deriveChild(1).deriveChild(2, true); + * var copy_of_child_0_1_2h = parent.deriveChild("m/0/1/2'"); + * assert(child_0_1_2h.xprivkey === copy_of_child_0_1_2h); + * ``` + * + * @param {string|number} arg + * @param {boolean?} hardened + */ +HDPrivateKey.prototype.deriveChild = function(arg, hardened) { + if (_.isNumber(arg)) { + return this._deriveWithNumber(arg, hardened); + } else if (_.isString(arg)) { + return this._deriveFromString(arg); + } else { + throw new hdErrors.InvalidDerivationArgument(arg); + } +}; + +/** + * WARNING: This method will not be officially supported until v1.0.0 + * + * + * WARNING: If this is a new implementation you should NOT use this method, you should be using + * `derive` instead. + * + * This method is explicitly for use and compatibility with an implementation that + * was not compliant with BIP32 regarding the derivation algorithm. The private key + * must be 32 bytes hashing, and this implementation will use the non-zero padded + * serialization of a private key, such that it's still possible to derive the privateKey + * to recover those funds. + * + * @param {string|number} arg + * @param {boolean?} hardened + */ +HDPrivateKey.prototype.deriveNonCompliantChild = function(arg, hardened) { + if (_.isNumber(arg)) { + return this._deriveWithNumber(arg, hardened, true); + } else if (_.isString(arg)) { + return this._deriveFromString(arg, true); + } else { + throw new hdErrors.InvalidDerivationArgument(arg); + } +}; + +HDPrivateKey.prototype._deriveWithNumber = function(index, hardened, nonCompliant) { + /* jshint maxstatements: 20 */ + /* jshint maxcomplexity: 10 */ + if (!HDPrivateKey.isValidPath(index, hardened)) { + throw new hdErrors.InvalidPath(index); + } + + hardened = index >= HDPrivateKey.Hardened ? true : hardened; + if (index < HDPrivateKey.Hardened && hardened === true) { + index += HDPrivateKey.Hardened; + } + + var indexBuffer = BufferUtil.integerAsBuffer(index); + var data; + if (hardened && nonCompliant) { + // The private key serialization in this case will not be exactly 32 bytes and can be + // any value less, and the value is not zero-padded. + var nonZeroPadded = this.privateKey.bn.toBuffer(); + data = BufferUtil.concat([new buffer.Buffer([0]), nonZeroPadded, indexBuffer]); + } else if (hardened) { + // This will use a 32 byte zero padded serialization of the private key + var privateKeyBuffer = this.privateKey.bn.toBuffer({size: 32}); + assert(privateKeyBuffer.length === 32, 'length of private key buffer is expected to be 32 bytes'); + data = BufferUtil.concat([new buffer.Buffer([0]), privateKeyBuffer, indexBuffer]); + } else { + data = BufferUtil.concat([this.publicKey.toBuffer(), indexBuffer]); + } + var hash = Hash.sha512hmac(data, this._buffers.chainCode); + var leftPart = BN.fromBuffer(hash.slice(0, 32), { + size: 32 + }); + var chainCode = hash.slice(32, 64); + + var privateKey = leftPart.add(this.privateKey.toBigNumber()).umod(Point.getN()).toBuffer({ + size: 32 + }); + + if (!PrivateKey.isValid(privateKey)) { + // Index at this point is already hardened, we can pass null as the hardened arg + return this._deriveWithNumber(index + 1, null, nonCompliant); + } + + var derived = new HDPrivateKey({ + network: this.network, + depth: this.depth + 1, + parentFingerPrint: this.fingerPrint, + childIndex: index, + chainCode: chainCode, + privateKey: privateKey + }); + + return derived; +}; + +HDPrivateKey.prototype._deriveFromString = function(path, nonCompliant) { + if (!HDPrivateKey.isValidPath(path)) { + throw new hdErrors.InvalidPath(path); + } + + var indexes = HDPrivateKey._getDerivationIndexes(path); + var derived = indexes.reduce(function(prev, index) { + return prev._deriveWithNumber(index, null, nonCompliant); + }, this); + + return derived; +}; + +/** + * Verifies that a given serialized private key in base58 with checksum format + * is valid. + * + * @param {string|Buffer} data - the serialized private key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {boolean} + */ +HDPrivateKey.isValidSerialized = function(data, network) { + return !HDPrivateKey.getSerializedError(data, network); +}; + +/** + * Checks what's the error that causes the validation of a serialized private key + * in base58 with checksum to fail. + * + * @param {string|Buffer} data - the serialized private key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {errors.InvalidArgument|null} + */ +HDPrivateKey.getSerializedError = function(data, network) { + /* jshint maxcomplexity: 10 */ + if (!(_.isString(data) || BufferUtil.isBuffer(data))) { + return new hdErrors.UnrecognizedArgument('Expected string or buffer'); + } + if (!Base58.validCharacters(data)) { + return new errors.InvalidB58Char('(unknown)', data); + } + try { + data = Base58Check.decode(data); + } catch (e) { + return new errors.InvalidB58Checksum(data); + } + if (data.length !== HDPrivateKey.DataLength) { + return new hdErrors.InvalidLength(data); + } + if (!_.isUndefined(network)) { + var error = HDPrivateKey._validateNetwork(data, network); + if (error) { + return error; + } + } + return null; +}; + +HDPrivateKey._validateNetwork = function(data, networkArg) { + var network = Network.get(networkArg); + if (!network) { + return new errors.InvalidNetworkArgument(networkArg); + } + var version = data.slice(0, 4); + if (BufferUtil.integerFromBuffer(version) !== network.xprivkey) { + return new errors.InvalidNetwork(version); + } + return null; +}; + +HDPrivateKey.fromString = function(arg) { + $.checkArgument(_.isString(arg), 'No valid string was provided'); + return new HDPrivateKey(arg); +}; + +HDPrivateKey.fromObject = function(arg) { + $.checkArgument(_.isObject(arg), 'No valid argument was provided'); + return new HDPrivateKey(arg); +}; + +HDPrivateKey.prototype._buildFromJSON = function(arg) { + return this._buildFromObject(JSON.parse(arg)); +}; + +HDPrivateKey.prototype._buildFromObject = function(arg) { + /* jshint maxcomplexity: 12 */ + // TODO: Type validation + var buffers = { + version: arg.network ? BufferUtil.integerAsBuffer(Network.get(arg.network).xprivkey) : arg.version, + depth: _.isNumber(arg.depth) ? BufferUtil.integerAsSingleByteBuffer(arg.depth) : arg.depth, + parentFingerPrint: _.isNumber(arg.parentFingerPrint) ? BufferUtil.integerAsBuffer(arg.parentFingerPrint) : arg.parentFingerPrint, + childIndex: _.isNumber(arg.childIndex) ? BufferUtil.integerAsBuffer(arg.childIndex) : arg.childIndex, + chainCode: _.isString(arg.chainCode) ? BufferUtil.hexToBuffer(arg.chainCode) : arg.chainCode, + privateKey: (_.isString(arg.privateKey) && JSUtil.isHexa(arg.privateKey)) ? BufferUtil.hexToBuffer(arg.privateKey) : arg.privateKey, + checksum: arg.checksum ? (arg.checksum.length ? arg.checksum : BufferUtil.integerAsBuffer(arg.checksum)) : undefined + }; + return this._buildFromBuffers(buffers); +}; + +HDPrivateKey.prototype._buildFromSerialized = function(arg) { + var decoded = Base58Check.decode(arg); + var buffers = { + version: decoded.slice(HDPrivateKey.VersionStart, HDPrivateKey.VersionEnd), + depth: decoded.slice(HDPrivateKey.DepthStart, HDPrivateKey.DepthEnd), + parentFingerPrint: decoded.slice(HDPrivateKey.ParentFingerPrintStart, + HDPrivateKey.ParentFingerPrintEnd), + childIndex: decoded.slice(HDPrivateKey.ChildIndexStart, HDPrivateKey.ChildIndexEnd), + chainCode: decoded.slice(HDPrivateKey.ChainCodeStart, HDPrivateKey.ChainCodeEnd), + privateKey: decoded.slice(HDPrivateKey.PrivateKeyStart, HDPrivateKey.PrivateKeyEnd), + checksum: decoded.slice(HDPrivateKey.ChecksumStart, HDPrivateKey.ChecksumEnd), + xprivkey: arg + }; + return this._buildFromBuffers(buffers); +}; + +HDPrivateKey.prototype._generateRandomly = function(network) { + return HDPrivateKey.fromSeed(Random.getRandomBuffer(64), network); +}; + +/** + * Generate a private key from a seed, as described in BIP32 + * + * @param {string|Buffer} hexa + * @param {*} network + * @return HDPrivateKey + */ +HDPrivateKey.fromSeed = function(hexa, network) { + /* jshint maxcomplexity: 8 */ + if (JSUtil.isHexaString(hexa)) { + hexa = BufferUtil.hexToBuffer(hexa); + } + if (!Buffer.isBuffer(hexa)) { + throw new hdErrors.InvalidEntropyArgument(hexa); + } + if (hexa.length < MINIMUM_ENTROPY_BITS * BITS_TO_BYTES) { + throw new hdErrors.InvalidEntropyArgument.NotEnoughEntropy(hexa); + } + if (hexa.length > MAXIMUM_ENTROPY_BITS * BITS_TO_BYTES) { + throw new hdErrors.InvalidEntropyArgument.TooMuchEntropy(hexa); + } + var hash = Hash.sha512hmac(hexa, new buffer.Buffer('Bitcoin seed')); + + return new HDPrivateKey({ + network: Network.get(network) || Network.defaultNetwork, + depth: 0, + parentFingerPrint: 0, + childIndex: 0, + privateKey: hash.slice(0, 32), + chainCode: hash.slice(32, 64) + }); +}; + + + +HDPrivateKey.prototype._calcHDPublicKey = function() { + if (!this._hdPublicKey) { + var HDPublicKey = require('./hdpublickey'); + this._hdPublicKey = new HDPublicKey(this); + } +}; + +/** + * Receives a object with buffers in all the properties and populates the + * internal structure + * + * @param {Object} arg + * @param {buffer.Buffer} arg.version + * @param {buffer.Buffer} arg.depth + * @param {buffer.Buffer} arg.parentFingerPrint + * @param {buffer.Buffer} arg.childIndex + * @param {buffer.Buffer} arg.chainCode + * @param {buffer.Buffer} arg.privateKey + * @param {buffer.Buffer} arg.checksum + * @param {string=} arg.xprivkey - if set, don't recalculate the base58 + * representation + * @return {HDPrivateKey} this + */ +HDPrivateKey.prototype._buildFromBuffers = function(arg) { + /* jshint maxcomplexity: 8 */ + /* jshint maxstatements: 20 */ + + HDPrivateKey._validateBufferArguments(arg); + + JSUtil.defineImmutable(this, { + _buffers: arg + }); + + var sequence = [ + arg.version, arg.depth, arg.parentFingerPrint, arg.childIndex, arg.chainCode, + BufferUtil.emptyBuffer(1), arg.privateKey + ]; + var concat = buffer.Buffer.concat(sequence); + if (!arg.checksum || !arg.checksum.length) { + arg.checksum = Base58Check.checksum(concat); + } else { + if (arg.checksum.toString() !== Base58Check.checksum(concat).toString()) { + throw new errors.InvalidB58Checksum(concat); + } + } + + var network = Network.get(BufferUtil.integerFromBuffer(arg.version)); + var xprivkey; + xprivkey = Base58Check.encode(buffer.Buffer.concat(sequence)); + arg.xprivkey = Buffer.from(xprivkey); + + var privateKey = new PrivateKey(BN.fromBuffer(arg.privateKey), network); + var publicKey = privateKey.toPublicKey(); + var size = HDPrivateKey.ParentFingerPrintSize; + var fingerPrint = Hash.sha256ripemd160(publicKey.toBuffer()).slice(0, size); + + JSUtil.defineImmutable(this, { + xprivkey: xprivkey, + network: network, + depth: BufferUtil.integerFromSingleByteBuffer(arg.depth), + privateKey: privateKey, + publicKey: publicKey, + fingerPrint: fingerPrint + }); + + this._hdPublicKey = null; + + Object.defineProperty(this, 'hdPublicKey', { + configurable: false, + enumerable: true, + get: function() { + this._calcHDPublicKey(); + return this._hdPublicKey; + } + }); + Object.defineProperty(this, 'xpubkey', { + configurable: false, + enumerable: true, + get: function() { + this._calcHDPublicKey(); + return this._hdPublicKey.xpubkey; + } + }); + return this; +}; + +HDPrivateKey._validateBufferArguments = function(arg) { + var checkBuffer = function(name, size) { + var buff = arg[name]; + assert(BufferUtil.isBuffer(buff), name + ' argument is not a buffer'); + assert( + buff.length === size, + name + ' has not the expected size: found ' + buff.length + ', expected ' + size + ); + }; + checkBuffer('version', HDPrivateKey.VersionSize); + checkBuffer('depth', HDPrivateKey.DepthSize); + checkBuffer('parentFingerPrint', HDPrivateKey.ParentFingerPrintSize); + checkBuffer('childIndex', HDPrivateKey.ChildIndexSize); + checkBuffer('chainCode', HDPrivateKey.ChainCodeSize); + checkBuffer('privateKey', HDPrivateKey.PrivateKeySize); + if (arg.checksum && arg.checksum.length) { + checkBuffer('checksum', HDPrivateKey.CheckSumSize); + } +}; + +/** + * Returns the string representation of this private key (a string starting + * with "xprv..." + * + * @return string + */ +HDPrivateKey.prototype.toString = function() { + return this.xprivkey; +}; + +/** + * Returns the console representation of this extended private key. + * @return string + */ +HDPrivateKey.prototype.inspect = function() { + return ''; +}; + +/** + * Returns a plain object with a representation of this private key. + * + * Fields include:
    + *
  • network: either 'livenet' or 'testnet' + *
  • depth: a number ranging from 0 to 255 + *
  • fingerPrint: a number ranging from 0 to 2^32-1, taken from the hash of the + *
  • associated public key + *
  • parentFingerPrint: a number ranging from 0 to 2^32-1, taken from the hash + *
  • of this parent's associated public key or zero. + *
  • childIndex: the index from which this child was derived (or zero) + *
  • chainCode: an hexa string representing a number used in the derivation + *
  • privateKey: the private key associated, in hexa representation + *
  • xprivkey: the representation of this extended private key in checksum + *
  • base58 format + *
  • checksum: the base58 checksum of xprivkey + *
+ * @return {Object} + */ +HDPrivateKey.prototype.toObject = HDPrivateKey.prototype.toJSON = function toObject() { + return { + network: Network.get(BufferUtil.integerFromBuffer(this._buffers.version), 'xprivkey').name, + depth: BufferUtil.integerFromSingleByteBuffer(this._buffers.depth), + fingerPrint: BufferUtil.integerFromBuffer(this.fingerPrint), + parentFingerPrint: BufferUtil.integerFromBuffer(this._buffers.parentFingerPrint), + childIndex: BufferUtil.integerFromBuffer(this._buffers.childIndex), + chainCode: BufferUtil.bufferToHex(this._buffers.chainCode), + privateKey: this.privateKey.toBuffer().toString('hex'), + checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), + xprivkey: this.xprivkey + }; +}; + +/** + * Build a HDPrivateKey from a buffer + * + * @param {Buffer} arg + * @return {HDPrivateKey} + */ +HDPrivateKey.fromBuffer = function(arg) { + return new HDPrivateKey(arg.toString()); +}; + +/** + * Returns a buffer representation of the HDPrivateKey + * + * @return {string} + */ +HDPrivateKey.prototype.toBuffer = function() { + return BufferUtil.copy(this._buffers.xprivkey); +}; + +HDPrivateKey.DefaultDepth = 0; +HDPrivateKey.DefaultFingerprint = 0; +HDPrivateKey.DefaultChildIndex = 0; +HDPrivateKey.Hardened = 0x80000000; +HDPrivateKey.MaxIndex = 2 * HDPrivateKey.Hardened; + +HDPrivateKey.RootElementAlias = ['m', 'M', 'm\'', 'M\'']; + +HDPrivateKey.VersionSize = 4; +HDPrivateKey.DepthSize = 1; +HDPrivateKey.ParentFingerPrintSize = 4; +HDPrivateKey.ChildIndexSize = 4; +HDPrivateKey.ChainCodeSize = 32; +HDPrivateKey.PrivateKeySize = 32; +HDPrivateKey.CheckSumSize = 4; + +HDPrivateKey.DataLength = 78; +HDPrivateKey.SerializedByteSize = 82; + +HDPrivateKey.VersionStart = 0; +HDPrivateKey.VersionEnd = HDPrivateKey.VersionStart + HDPrivateKey.VersionSize; +HDPrivateKey.DepthStart = HDPrivateKey.VersionEnd; +HDPrivateKey.DepthEnd = HDPrivateKey.DepthStart + HDPrivateKey.DepthSize; +HDPrivateKey.ParentFingerPrintStart = HDPrivateKey.DepthEnd; +HDPrivateKey.ParentFingerPrintEnd = HDPrivateKey.ParentFingerPrintStart + HDPrivateKey.ParentFingerPrintSize; +HDPrivateKey.ChildIndexStart = HDPrivateKey.ParentFingerPrintEnd; +HDPrivateKey.ChildIndexEnd = HDPrivateKey.ChildIndexStart + HDPrivateKey.ChildIndexSize; +HDPrivateKey.ChainCodeStart = HDPrivateKey.ChildIndexEnd; +HDPrivateKey.ChainCodeEnd = HDPrivateKey.ChainCodeStart + HDPrivateKey.ChainCodeSize; +HDPrivateKey.PrivateKeyStart = HDPrivateKey.ChainCodeEnd + 1; +HDPrivateKey.PrivateKeyEnd = HDPrivateKey.PrivateKeyStart + HDPrivateKey.PrivateKeySize; +HDPrivateKey.ChecksumStart = HDPrivateKey.PrivateKeyEnd; +HDPrivateKey.ChecksumEnd = HDPrivateKey.ChecksumStart + HDPrivateKey.CheckSumSize; + +assert(HDPrivateKey.ChecksumEnd === HDPrivateKey.SerializedByteSize); + +module.exports = HDPrivateKey; + +}).call(this,require("buffer").Buffer) +},{"./crypto/bn":271,"./crypto/hash":273,"./crypto/point":274,"./crypto/random":275,"./encoding/base58":277,"./encoding/base58check":278,"./errors":282,"./hdpublickey":285,"./networks":286,"./privatekey":288,"./util/buffer":308,"./util/js":309,"./util/preconditions":310,"assert":26,"buffer":146,"lodash":311}],285:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('./util/preconditions'); + +var BN = require('./crypto/bn'); +var Base58 = require('./encoding/base58'); +var Base58Check = require('./encoding/base58check'); +var Hash = require('./crypto/hash'); +var HDPrivateKey = require('./hdprivatekey'); +var Network = require('./networks'); +var Point = require('./crypto/point'); +var PublicKey = require('./publickey'); + +var bitcoreErrors = require('./errors'); +var errors = bitcoreErrors; +var hdErrors = bitcoreErrors.HDPublicKey; +var assert = require('assert'); + +var JSUtil = require('./util/js'); +var BufferUtil = require('./util/buffer'); + +/** + * The representation of an hierarchically derived public key. + * + * See https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki + * + * @constructor + * @param {Object|string|Buffer} arg + */ +function HDPublicKey(arg) { + /* jshint maxcomplexity: 12 */ + /* jshint maxstatements: 20 */ + if (arg instanceof HDPublicKey) { + return arg; + } + if (!(this instanceof HDPublicKey)) { + return new HDPublicKey(arg); + } + if (arg) { + if (_.isString(arg) || BufferUtil.isBuffer(arg)) { + var error = HDPublicKey.getSerializedError(arg); + if (!error) { + return this._buildFromSerialized(arg); + } else if (BufferUtil.isBuffer(arg) && !HDPublicKey.getSerializedError(arg.toString())) { + return this._buildFromSerialized(arg.toString()); + } else { + if (error instanceof hdErrors.ArgumentIsPrivateExtended) { + return new HDPrivateKey(arg).hdPublicKey; + } + throw error; + } + } else { + if (_.isObject(arg)) { + if (arg instanceof HDPrivateKey) { + return this._buildFromPrivate(arg); + } else { + return this._buildFromObject(arg); + } + } else { + throw new hdErrors.UnrecognizedArgument(arg); + } + } + } else { + throw new hdErrors.MustSupplyArgument(); + } +} + +/** + * Verifies that a given path is valid. + * + * @param {string|number} arg + * @return {boolean} + */ +HDPublicKey.isValidPath = function(arg) { + if (_.isString(arg)) { + var indexes = HDPrivateKey._getDerivationIndexes(arg); + return indexes !== null && _.every(indexes, HDPublicKey.isValidPath); + } + + if (_.isNumber(arg)) { + return arg >= 0 && arg < HDPublicKey.Hardened; + } + + return false; +}; + +/** + * WARNING: This method is deprecated. Use deriveChild instead. + * + * + * Get a derivated child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same public key), "m/0/1/40/2/1000". + * + * Note that hardened keys can't be derived from a public extended key. + * + * If the first argument is a number, the child with that index will be + * derived. See the example usage for clarification. + * + * @example + * ```javascript + * var parent = new HDPublicKey('xpub...'); + * var child_0_1_2 = parent.derive(0).derive(1).derive(2); + * var copy_of_child_0_1_2 = parent.derive("m/0/1/2"); + * assert(child_0_1_2.xprivkey === copy_of_child_0_1_2); + * ``` + * + * @param {string|number} arg + */ +HDPublicKey.prototype.derive = function(arg, hardened) { + return this.deriveChild(arg, hardened); +}; + +/** + * WARNING: This method will not be officially supported until v1.0.0. + * + * + * Get a derivated child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same public key), "m/0/1/40/2/1000". + * + * Note that hardened keys can't be derived from a public extended key. + * + * If the first argument is a number, the child with that index will be + * derived. See the example usage for clarification. + * + * @example + * ```javascript + * var parent = new HDPublicKey('xpub...'); + * var child_0_1_2 = parent.deriveChild(0).deriveChild(1).deriveChild(2); + * var copy_of_child_0_1_2 = parent.deriveChild("m/0/1/2"); + * assert(child_0_1_2.xprivkey === copy_of_child_0_1_2); + * ``` + * + * @param {string|number} arg + */ +HDPublicKey.prototype.deriveChild = function(arg, hardened) { + if (_.isNumber(arg)) { + return this._deriveWithNumber(arg, hardened); + } else if (_.isString(arg)) { + return this._deriveFromString(arg); + } else { + throw new hdErrors.InvalidDerivationArgument(arg); + } +}; + +HDPublicKey.prototype._deriveWithNumber = function(index, hardened) { + if (index >= HDPublicKey.Hardened || hardened) { + throw new hdErrors.InvalidIndexCantDeriveHardened(); + } + if (index < 0) { + throw new hdErrors.InvalidPath(index); + } + + var indexBuffer = BufferUtil.integerAsBuffer(index); + var data = BufferUtil.concat([this.publicKey.toBuffer(), indexBuffer]); + var hash = Hash.sha512hmac(data, this._buffers.chainCode); + var leftPart = BN.fromBuffer(hash.slice(0, 32), {size: 32}); + var chainCode = hash.slice(32, 64); + + var publicKey; + try { + publicKey = PublicKey.fromPoint(Point.getG().mul(leftPart).add(this.publicKey.point)); + } catch (e) { + return this._deriveWithNumber(index + 1); + } + + var derived = new HDPublicKey({ + network: this.network, + depth: this.depth + 1, + parentFingerPrint: this.fingerPrint, + childIndex: index, + chainCode: chainCode, + publicKey: publicKey + }); + + return derived; +}; + +HDPublicKey.prototype._deriveFromString = function(path) { + /* jshint maxcomplexity: 8 */ + if (_.includes(path, "'")) { + throw new hdErrors.InvalidIndexCantDeriveHardened(); + } else if (!HDPublicKey.isValidPath(path)) { + throw new hdErrors.InvalidPath(path); + } + + var indexes = HDPrivateKey._getDerivationIndexes(path); + var derived = indexes.reduce(function(prev, index) { + return prev._deriveWithNumber(index); + }, this); + + return derived; +}; + +/** + * Verifies that a given serialized public key in base58 with checksum format + * is valid. + * + * @param {string|Buffer} data - the serialized public key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {boolean} + */ +HDPublicKey.isValidSerialized = function(data, network) { + return _.isNull(HDPublicKey.getSerializedError(data, network)); +}; + +/** + * Checks what's the error that causes the validation of a serialized public key + * in base58 with checksum to fail. + * + * @param {string|Buffer} data - the serialized public key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {errors|null} + */ +HDPublicKey.getSerializedError = function(data, network) { + /* jshint maxcomplexity: 10 */ + /* jshint maxstatements: 20 */ + if (!(_.isString(data) || BufferUtil.isBuffer(data))) { + return new hdErrors.UnrecognizedArgument('expected buffer or string'); + } + if (!Base58.validCharacters(data)) { + return new errors.InvalidB58Char('(unknown)', data); + } + try { + data = Base58Check.decode(data); + } catch (e) { + return new errors.InvalidB58Checksum(data); + } + if (data.length !== HDPublicKey.DataSize) { + return new hdErrors.InvalidLength(data); + } + if (!_.isUndefined(network)) { + var error = HDPublicKey._validateNetwork(data, network); + if (error) { + return error; + } + } + var version = BufferUtil.integerFromBuffer(data.slice(0, 4)); + if (version === Network.livenet.xprivkey || version === Network.testnet.xprivkey ) { + return new hdErrors.ArgumentIsPrivateExtended(); + } + return null; +}; + +HDPublicKey._validateNetwork = function(data, networkArg) { + var network = Network.get(networkArg); + if (!network) { + return new errors.InvalidNetworkArgument(networkArg); + } + var version = data.slice(HDPublicKey.VersionStart, HDPublicKey.VersionEnd); + if (BufferUtil.integerFromBuffer(version) !== network.xpubkey) { + return new errors.InvalidNetwork(version); + } + return null; +}; + +HDPublicKey.prototype._buildFromPrivate = function (arg) { + var args = _.clone(arg._buffers); + var point = Point.getG().mul(BN.fromBuffer(args.privateKey)); + args.publicKey = Point.pointToCompressed(point); + args.version = BufferUtil.integerAsBuffer(Network.get(BufferUtil.integerFromBuffer(args.version)).xpubkey); + args.privateKey = undefined; + args.checksum = undefined; + args.xprivkey = undefined; + return this._buildFromBuffers(args); +}; + +HDPublicKey.prototype._buildFromObject = function(arg) { + /* jshint maxcomplexity: 10 */ + // TODO: Type validation + var buffers = { + version: arg.network ? BufferUtil.integerAsBuffer(Network.get(arg.network).xpubkey) : arg.version, + depth: _.isNumber(arg.depth) ? BufferUtil.integerAsSingleByteBuffer(arg.depth) : arg.depth, + parentFingerPrint: _.isNumber(arg.parentFingerPrint) ? BufferUtil.integerAsBuffer(arg.parentFingerPrint) : arg.parentFingerPrint, + childIndex: _.isNumber(arg.childIndex) ? BufferUtil.integerAsBuffer(arg.childIndex) : arg.childIndex, + chainCode: _.isString(arg.chainCode) ? BufferUtil.hexToBuffer(arg.chainCode) : arg.chainCode, + publicKey: _.isString(arg.publicKey) ? BufferUtil.hexToBuffer(arg.publicKey) : + BufferUtil.isBuffer(arg.publicKey) ? arg.publicKey : arg.publicKey.toBuffer(), + checksum: _.isNumber(arg.checksum) ? BufferUtil.integerAsBuffer(arg.checksum) : arg.checksum + }; + return this._buildFromBuffers(buffers); +}; + +HDPublicKey.prototype._buildFromSerialized = function(arg) { + var decoded = Base58Check.decode(arg); + var buffers = { + version: decoded.slice(HDPublicKey.VersionStart, HDPublicKey.VersionEnd), + depth: decoded.slice(HDPublicKey.DepthStart, HDPublicKey.DepthEnd), + parentFingerPrint: decoded.slice(HDPublicKey.ParentFingerPrintStart, + HDPublicKey.ParentFingerPrintEnd), + childIndex: decoded.slice(HDPublicKey.ChildIndexStart, HDPublicKey.ChildIndexEnd), + chainCode: decoded.slice(HDPublicKey.ChainCodeStart, HDPublicKey.ChainCodeEnd), + publicKey: decoded.slice(HDPublicKey.PublicKeyStart, HDPublicKey.PublicKeyEnd), + checksum: decoded.slice(HDPublicKey.ChecksumStart, HDPublicKey.ChecksumEnd), + xpubkey: arg + }; + return this._buildFromBuffers(buffers); +}; + +/** + * Receives a object with buffers in all the properties and populates the + * internal structure + * + * @param {Object} arg + * @param {buffer.Buffer} arg.version + * @param {buffer.Buffer} arg.depth + * @param {buffer.Buffer} arg.parentFingerPrint + * @param {buffer.Buffer} arg.childIndex + * @param {buffer.Buffer} arg.chainCode + * @param {buffer.Buffer} arg.publicKey + * @param {buffer.Buffer} arg.checksum + * @param {string=} arg.xpubkey - if set, don't recalculate the base58 + * representation + * @return {HDPublicKey} this + */ +HDPublicKey.prototype._buildFromBuffers = function(arg) { + /* jshint maxcomplexity: 8 */ + /* jshint maxstatements: 20 */ + + HDPublicKey._validateBufferArguments(arg); + + JSUtil.defineImmutable(this, { + _buffers: arg + }); + + var sequence = [ + arg.version, arg.depth, arg.parentFingerPrint, arg.childIndex, arg.chainCode, + arg.publicKey + ]; + var concat = BufferUtil.concat(sequence); + var checksum = Base58Check.checksum(concat); + if (!arg.checksum || !arg.checksum.length) { + arg.checksum = checksum; + } else { + if (arg.checksum.toString('hex') !== checksum.toString('hex')) { + throw new errors.InvalidB58Checksum(concat, checksum); + } + } + var network = Network.get(BufferUtil.integerFromBuffer(arg.version)); + + var xpubkey; + xpubkey = Base58Check.encode(BufferUtil.concat(sequence)); + arg.xpubkey = Buffer.from(xpubkey); + + var publicKey = new PublicKey(arg.publicKey, {network: network}); + var size = HDPublicKey.ParentFingerPrintSize; + var fingerPrint = Hash.sha256ripemd160(publicKey.toBuffer()).slice(0, size); + + JSUtil.defineImmutable(this, { + xpubkey: xpubkey, + network: network, + depth: BufferUtil.integerFromSingleByteBuffer(arg.depth), + publicKey: publicKey, + fingerPrint: fingerPrint + }); + + return this; +}; + +HDPublicKey._validateBufferArguments = function(arg) { + var checkBuffer = function(name, size) { + var buff = arg[name]; + assert(BufferUtil.isBuffer(buff), name + ' argument is not a buffer, it\'s ' + typeof buff); + assert( + buff.length === size, + name + ' has not the expected size: found ' + buff.length + ', expected ' + size + ); + }; + checkBuffer('version', HDPublicKey.VersionSize); + checkBuffer('depth', HDPublicKey.DepthSize); + checkBuffer('parentFingerPrint', HDPublicKey.ParentFingerPrintSize); + checkBuffer('childIndex', HDPublicKey.ChildIndexSize); + checkBuffer('chainCode', HDPublicKey.ChainCodeSize); + checkBuffer('publicKey', HDPublicKey.PublicKeySize); + if (arg.checksum && arg.checksum.length) { + checkBuffer('checksum', HDPublicKey.CheckSumSize); + } +}; + +HDPublicKey.fromString = function(arg) { + $.checkArgument(_.isString(arg), 'No valid string was provided'); + return new HDPublicKey(arg); +}; + +HDPublicKey.fromObject = function(arg) { + $.checkArgument(_.isObject(arg), 'No valid argument was provided'); + return new HDPublicKey(arg); +}; + +/** + * Returns the base58 checked representation of the public key + * @return {string} a string starting with "xpub..." in livenet + */ +HDPublicKey.prototype.toString = function() { + return this.xpubkey; +}; + +/** + * Returns the console representation of this extended public key. + * @return string + */ +HDPublicKey.prototype.inspect = function() { + return ''; +}; + +/** + * Returns a plain JavaScript object with information to reconstruct a key. + * + * Fields are:
    + *
  • network: 'livenet' or 'testnet' + *
  • depth: a number from 0 to 255, the depth to the master extended key + *
  • fingerPrint: a number of 32 bits taken from the hash of the public key + *
  • fingerPrint: a number of 32 bits taken from the hash of this key's + *
  • parent's public key + *
  • childIndex: index with which this key was derived + *
  • chainCode: string in hexa encoding used for derivation + *
  • publicKey: string, hexa encoded, in compressed key format + *
  • checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), + *
  • xpubkey: the string with the base58 representation of this extended key + *
  • checksum: the base58 checksum of xpubkey + *
+ */ +HDPublicKey.prototype.toObject = HDPublicKey.prototype.toJSON = function toObject() { + return { + network: Network.get(BufferUtil.integerFromBuffer(this._buffers.version)).name, + depth: BufferUtil.integerFromSingleByteBuffer(this._buffers.depth), + fingerPrint: BufferUtil.integerFromBuffer(this.fingerPrint), + parentFingerPrint: BufferUtil.integerFromBuffer(this._buffers.parentFingerPrint), + childIndex: BufferUtil.integerFromBuffer(this._buffers.childIndex), + chainCode: BufferUtil.bufferToHex(this._buffers.chainCode), + publicKey: this.publicKey.toString(), + checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), + xpubkey: this.xpubkey + }; +}; + +/** + * Create a HDPublicKey from a buffer argument + * + * @param {Buffer} arg + * @return {HDPublicKey} + */ +HDPublicKey.fromBuffer = function(arg) { + return new HDPublicKey(arg); +}; + +/** + * Return a buffer representation of the xpubkey + * + * @return {Buffer} + */ +HDPublicKey.prototype.toBuffer = function() { + return BufferUtil.copy(this._buffers.xpubkey); +}; + +HDPublicKey.Hardened = 0x80000000; +HDPublicKey.RootElementAlias = ['m', 'M']; + +HDPublicKey.VersionSize = 4; +HDPublicKey.DepthSize = 1; +HDPublicKey.ParentFingerPrintSize = 4; +HDPublicKey.ChildIndexSize = 4; +HDPublicKey.ChainCodeSize = 32; +HDPublicKey.PublicKeySize = 33; +HDPublicKey.CheckSumSize = 4; + +HDPublicKey.DataSize = 78; +HDPublicKey.SerializedByteSize = 82; + +HDPublicKey.VersionStart = 0; +HDPublicKey.VersionEnd = HDPublicKey.VersionStart + HDPublicKey.VersionSize; +HDPublicKey.DepthStart = HDPublicKey.VersionEnd; +HDPublicKey.DepthEnd = HDPublicKey.DepthStart + HDPublicKey.DepthSize; +HDPublicKey.ParentFingerPrintStart = HDPublicKey.DepthEnd; +HDPublicKey.ParentFingerPrintEnd = HDPublicKey.ParentFingerPrintStart + HDPublicKey.ParentFingerPrintSize; +HDPublicKey.ChildIndexStart = HDPublicKey.ParentFingerPrintEnd; +HDPublicKey.ChildIndexEnd = HDPublicKey.ChildIndexStart + HDPublicKey.ChildIndexSize; +HDPublicKey.ChainCodeStart = HDPublicKey.ChildIndexEnd; +HDPublicKey.ChainCodeEnd = HDPublicKey.ChainCodeStart + HDPublicKey.ChainCodeSize; +HDPublicKey.PublicKeyStart = HDPublicKey.ChainCodeEnd; +HDPublicKey.PublicKeyEnd = HDPublicKey.PublicKeyStart + HDPublicKey.PublicKeySize; +HDPublicKey.ChecksumStart = HDPublicKey.PublicKeyEnd; +HDPublicKey.ChecksumEnd = HDPublicKey.ChecksumStart + HDPublicKey.CheckSumSize; + +assert(HDPublicKey.PublicKeyEnd === HDPublicKey.DataSize); +assert(HDPublicKey.ChecksumEnd === HDPublicKey.SerializedByteSize); + +module.exports = HDPublicKey; + +}).call(this,require("buffer").Buffer) +},{"./crypto/bn":271,"./crypto/hash":273,"./crypto/point":274,"./encoding/base58":277,"./encoding/base58check":278,"./errors":282,"./hdprivatekey":284,"./networks":286,"./publickey":289,"./util/buffer":308,"./util/js":309,"./util/preconditions":310,"assert":26,"buffer":146,"lodash":311}],286:[function(require,module,exports){ +'use strict'; +var _ = require('lodash'); + +var BufferUtil = require('./util/buffer'); +var JSUtil = require('./util/js'); +var networks = []; +var networkMaps = {}; + +/** + * A network is merely a map containing values that correspond to version + * numbers for each bitcoin network. Currently only supporting "livenet" + * (a.k.a. "mainnet") and "testnet". + * @constructor + */ +function Network() {} + +Network.prototype.toString = function toString() { + return this.name; +}; + +/** + * @function + * @member Networks#get + * Retrieves the network associated with a magic number or string. + * @param {string|number|Network} arg + * @param {string|Array} keys - if set, only check if the magic number associated with this name matches + * @return Network + */ +function get(arg, keys) { + if (~networks.indexOf(arg)) { + return arg; + } + if (keys) { + if (!_.isArray(keys)) { + keys = [keys]; + } + var containsArg = function(key) { + return networks[index][key] === arg; + }; + for (var index in networks) { + if (_.some(keys, containsArg)) { + return networks[index]; + } + } + return undefined; + } + return networkMaps[arg]; +} + +/** + * @function + * @member Networks#add + * Will add a custom Network + * @param {Object} data + * @param {string} data.name - The name of the network + * @param {string} data.alias - The aliased name of the network + * @param {Number} data.pubkeyhash - The publickey hash prefix + * @param {Number} data.privatekey - The privatekey prefix + * @param {Number} data.scripthash - The scripthash prefix + * @param {Number} data.xpubkey - The extended public key magic + * @param {Number} data.xprivkey - The extended private key magic + * @param {Number} data.networkMagic - The network magic number + * @param {Number} data.port - The network port + * @param {Array} data.dnsSeeds - An array of dns seeds + * @return Network + */ +function addNetwork(data) { + + var network = new Network(); + + JSUtil.defineImmutable(network, { + name: data.name, + alias: data.alias, + pubkeyhash: data.pubkeyhash, + privatekey: data.privatekey, + scripthash: data.scripthash, + xpubkey: data.xpubkey, + xprivkey: data.xprivkey + }); + + if (data.networkMagic) { + JSUtil.defineImmutable(network, { + networkMagic: BufferUtil.integerAsBuffer(data.networkMagic) + }); + } + + if (data.port) { + JSUtil.defineImmutable(network, { + port: data.port + }); + } + + if (data.dnsSeeds) { + JSUtil.defineImmutable(network, { + dnsSeeds: data.dnsSeeds + }); + } + _.each(network, function(value) { + if (!_.isUndefined(value) && !_.isObject(value)) { + networkMaps[value] = network; + } + }); + + networks.push(network); + + return network; + +} + +/** + * @function + * @member Networks#remove + * Will remove a custom network + * @param {Network} network + */ +function removeNetwork(network) { + for (var i = 0; i < networks.length; i++) { + if (networks[i] === network) { + networks.splice(i, 1); + } + } + for (var key in networkMaps) { + if (networkMaps[key] === network) { + delete networkMaps[key]; + } + } +} + +addNetwork({ + name: 'livenet', + alias: 'mainnet', + pubkeyhash: 0x00, + privatekey: 0x80, + scripthash: 0x05, + xpubkey: 0x0488b21e, + xprivkey: 0x0488ade4, + networkMagic: 0xf9beb4d9, + port: 8333, + dnsSeeds: [ + 'seed.bitcoin.sipa.be', + 'dnsseed.bluematt.me', + 'dnsseed.bitcoin.dashjr.org', + 'seed.bitcoinstats.com', + 'seed.bitnodes.io', + 'bitseed.xf2.org' + ] +}); + +/** + * @instance + * @member Networks#livenet + */ +var livenet = get('livenet'); + +addNetwork({ + name: 'testnet', + alias: 'regtest', + pubkeyhash: 0x6f, + privatekey: 0xef, + scripthash: 0xc4, + xpubkey: 0x043587cf, + xprivkey: 0x04358394 +}); + +/** + * @instance + * @member Networks#testnet + */ +var testnet = get('testnet'); + +// Add configurable values for testnet/regtest + +var TESTNET = { + PORT: 18333, + NETWORK_MAGIC: BufferUtil.integerAsBuffer(0x0b110907), + DNS_SEEDS: [ + 'testnet-seed.bitcoin.petertodd.org', + 'testnet-seed.bluematt.me', + 'testnet-seed.alexykot.me', + 'testnet-seed.bitcoin.schildbach.de' + ] +}; + +for (var key in TESTNET) { + if (!_.isObject(TESTNET[key])) { + networkMaps[TESTNET[key]] = testnet; + } +} + +var REGTEST = { + PORT: 18444, + NETWORK_MAGIC: BufferUtil.integerAsBuffer(0xfabfb5da), + DNS_SEEDS: [] +}; + +for (var key in REGTEST) { + if (!_.isObject(REGTEST[key])) { + networkMaps[REGTEST[key]] = testnet; + } +} + +Object.defineProperty(testnet, 'port', { + enumerable: true, + configurable: false, + get: function() { + if (this.regtestEnabled) { + return REGTEST.PORT; + } else { + return TESTNET.PORT; + } + } +}); + +Object.defineProperty(testnet, 'networkMagic', { + enumerable: true, + configurable: false, + get: function() { + if (this.regtestEnabled) { + return REGTEST.NETWORK_MAGIC; + } else { + return TESTNET.NETWORK_MAGIC; + } + } +}); + +Object.defineProperty(testnet, 'dnsSeeds', { + enumerable: true, + configurable: false, + get: function() { + if (this.regtestEnabled) { + return REGTEST.DNS_SEEDS; + } else { + return TESTNET.DNS_SEEDS; + } + } +}); + +/** + * @function + * @member Networks#enableRegtest + * Will enable regtest features for testnet + */ +function enableRegtest() { + testnet.regtestEnabled = true; +} + +/** + * @function + * @member Networks#disableRegtest + * Will disable regtest features for testnet + */ +function disableRegtest() { + testnet.regtestEnabled = false; +} + +/** + * @namespace Networks + */ +module.exports = { + add: addNetwork, + remove: removeNetwork, + defaultNetwork: livenet, + livenet: livenet, + mainnet: livenet, + testnet: testnet, + get: get, + enableRegtest: enableRegtest, + disableRegtest: disableRegtest +}; + +},{"./util/buffer":308,"./util/js":309,"lodash":311}],287:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('./util/preconditions'); +var BufferUtil = require('./util/buffer'); +var JSUtil = require('./util/js'); + +function Opcode(num) { + if (!(this instanceof Opcode)) { + return new Opcode(num); + } + + var value; + + if (_.isNumber(num)) { + value = num; + } else if (_.isString(num)) { + value = Opcode.map[num]; + } else { + throw new TypeError('Unrecognized num type: "' + typeof(num) + '" for Opcode'); + } + + JSUtil.defineImmutable(this, { + num: value + }); + + return this; +} + +Opcode.fromBuffer = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return new Opcode(Number('0x' + buf.toString('hex'))); +}; + +Opcode.fromNumber = function(num) { + $.checkArgument(_.isNumber(num)); + return new Opcode(num); +}; + +Opcode.fromString = function(str) { + $.checkArgument(_.isString(str)); + var value = Opcode.map[str]; + if (typeof value === 'undefined') { + throw new TypeError('Invalid opcodestr'); + } + return new Opcode(value); +}; + +Opcode.prototype.toHex = function() { + return this.num.toString(16); +}; + +Opcode.prototype.toBuffer = function() { + return Buffer.from(this.toHex(), 'hex'); +}; + +Opcode.prototype.toNumber = function() { + return this.num; +}; + +Opcode.prototype.toString = function() { + var str = Opcode.reverseMap[this.num]; + if (typeof str === 'undefined') { + throw new Error('Opcode does not have a string representation'); + } + return str; +}; + +Opcode.smallInt = function(n) { + $.checkArgument(_.isNumber(n), 'Invalid Argument: n should be number'); + $.checkArgument(n >= 0 && n <= 16, 'Invalid Argument: n must be between 0 and 16'); + if (n === 0) { + return Opcode('OP_0'); + } + return new Opcode(Opcode.map.OP_1 + n - 1); +}; + +Opcode.map = { + // push value + OP_FALSE: 0, + OP_0: 0, + OP_PUSHDATA1: 76, + OP_PUSHDATA2: 77, + OP_PUSHDATA4: 78, + OP_1NEGATE: 79, + OP_RESERVED: 80, + OP_TRUE: 81, + OP_1: 81, + OP_2: 82, + OP_3: 83, + OP_4: 84, + OP_5: 85, + OP_6: 86, + OP_7: 87, + OP_8: 88, + OP_9: 89, + OP_10: 90, + OP_11: 91, + OP_12: 92, + OP_13: 93, + OP_14: 94, + OP_15: 95, + OP_16: 96, + + // control + OP_NOP: 97, + OP_VER: 98, + OP_IF: 99, + OP_NOTIF: 100, + OP_VERIF: 101, + OP_VERNOTIF: 102, + OP_ELSE: 103, + OP_ENDIF: 104, + OP_VERIFY: 105, + OP_RETURN: 106, + + // stack ops + OP_TOALTSTACK: 107, + OP_FROMALTSTACK: 108, + OP_2DROP: 109, + OP_2DUP: 110, + OP_3DUP: 111, + OP_2OVER: 112, + OP_2ROT: 113, + OP_2SWAP: 114, + OP_IFDUP: 115, + OP_DEPTH: 116, + OP_DROP: 117, + OP_DUP: 118, + OP_NIP: 119, + OP_OVER: 120, + OP_PICK: 121, + OP_ROLL: 122, + OP_ROT: 123, + OP_SWAP: 124, + OP_TUCK: 125, + + // splice ops + OP_CAT: 126, + OP_SUBSTR: 127, + OP_LEFT: 128, + OP_RIGHT: 129, + OP_SIZE: 130, + + // bit logic + OP_INVERT: 131, + OP_AND: 132, + OP_OR: 133, + OP_XOR: 134, + OP_EQUAL: 135, + OP_EQUALVERIFY: 136, + OP_RESERVED1: 137, + OP_RESERVED2: 138, + + // numeric + OP_1ADD: 139, + OP_1SUB: 140, + OP_2MUL: 141, + OP_2DIV: 142, + OP_NEGATE: 143, + OP_ABS: 144, + OP_NOT: 145, + OP_0NOTEQUAL: 146, + + OP_ADD: 147, + OP_SUB: 148, + OP_MUL: 149, + OP_DIV: 150, + OP_MOD: 151, + OP_LSHIFT: 152, + OP_RSHIFT: 153, + + OP_BOOLAND: 154, + OP_BOOLOR: 155, + OP_NUMEQUAL: 156, + OP_NUMEQUALVERIFY: 157, + OP_NUMNOTEQUAL: 158, + OP_LESSTHAN: 159, + OP_GREATERTHAN: 160, + OP_LESSTHANOREQUAL: 161, + OP_GREATERTHANOREQUAL: 162, + OP_MIN: 163, + OP_MAX: 164, + + OP_WITHIN: 165, + + // crypto + OP_RIPEMD160: 166, + OP_SHA1: 167, + OP_SHA256: 168, + OP_HASH160: 169, + OP_HASH256: 170, + OP_CODESEPARATOR: 171, + OP_CHECKSIG: 172, + OP_CHECKSIGVERIFY: 173, + OP_CHECKMULTISIG: 174, + OP_CHECKMULTISIGVERIFY: 175, + + OP_CHECKLOCKTIMEVERIFY: 177, + OP_CHECKSEQUENCEVERIFY: 178, + + // expansion + OP_NOP1: 176, + OP_NOP2: 177, + OP_NOP3: 178, + OP_NOP4: 179, + OP_NOP5: 180, + OP_NOP6: 181, + OP_NOP7: 182, + OP_NOP8: 183, + OP_NOP9: 184, + OP_NOP10: 185, + + // template matching params + OP_PUBKEYHASH: 253, + OP_PUBKEY: 254, + OP_INVALIDOPCODE: 255 +}; + +Opcode.reverseMap = []; + +for (var k in Opcode.map) { + Opcode.reverseMap[Opcode.map[k]] = k; +} + +// Easier access to opcodes +_.extend(Opcode, Opcode.map); + +/** + * @returns true if opcode is one of OP_0, OP_1, ..., OP_16 + */ +Opcode.isSmallIntOp = function(opcode) { + if (opcode instanceof Opcode) { + opcode = opcode.toNumber(); + } + return ((opcode === Opcode.map.OP_0) || + ((opcode >= Opcode.map.OP_1) && (opcode <= Opcode.map.OP_16))); +}; + +/** + * Will return a string formatted for the console + * + * @returns {string} Script opcode + */ +Opcode.prototype.inspect = function() { + return ''; +}; + +module.exports = Opcode; + +}).call(this,require("buffer").Buffer) +},{"./util/buffer":308,"./util/js":309,"./util/preconditions":310,"buffer":146,"lodash":311}],288:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var Address = require('./address'); +var Base58Check = require('./encoding/base58check'); +var BN = require('./crypto/bn'); +var JSUtil = require('./util/js'); +var Networks = require('./networks'); +var Point = require('./crypto/point'); +var PublicKey = require('./publickey'); +var Random = require('./crypto/random'); +var $ = require('./util/preconditions'); + +/** + * Instantiate a PrivateKey from a BN, Buffer and WIF. + * + * @example + * ```javascript + * // generate a new random key + * var key = PrivateKey(); + * + * // get the associated address + * var address = key.toAddress(); + * + * // encode into wallet export format + * var exported = key.toWIF(); + * + * // instantiate from the exported (and saved) private key + * var imported = PrivateKey.fromWIF(exported); + * ``` + * + * @param {string} data - The encoded data in various formats + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @returns {PrivateKey} A new valid instance of an PrivateKey + * @constructor + */ +function PrivateKey(data, network) { + /* jshint maxstatements: 20 */ + /* jshint maxcomplexity: 8 */ + + if (!(this instanceof PrivateKey)) { + return new PrivateKey(data, network); + } + if (data instanceof PrivateKey) { + return data; + } + + var info = this._classifyArguments(data, network); + + // validation + if (!info.bn || info.bn.cmp(new BN(0)) === 0){ + throw new TypeError('Number can not be equal to zero, undefined, null or false'); + } + if (!info.bn.lt(Point.getN())) { + throw new TypeError('Number must be less than N'); + } + if (typeof(info.network) === 'undefined') { + throw new TypeError('Must specify the network ("livenet" or "testnet")'); + } + + JSUtil.defineImmutable(this, { + bn: info.bn, + compressed: info.compressed, + network: info.network + }); + + Object.defineProperty(this, 'publicKey', { + configurable: false, + enumerable: true, + get: this.toPublicKey.bind(this) + }); + + return this; + +}; + +/** + * Internal helper to instantiate PrivateKey internal `info` object from + * different kinds of arguments passed to the constructor. + * + * @param {*} data + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @return {Object} + */ +PrivateKey.prototype._classifyArguments = function(data, network) { + /* jshint maxcomplexity: 10 */ + var info = { + compressed: true, + network: network ? Networks.get(network) : Networks.defaultNetwork + }; + + // detect type of data + if (_.isUndefined(data) || _.isNull(data)){ + info.bn = PrivateKey._getRandomBN(); + } else if (data instanceof BN) { + info.bn = data; + } else if (data instanceof Buffer || data instanceof Uint8Array) { + info = PrivateKey._transformBuffer(data, network); + } else if (data.bn && data.network){ + info = PrivateKey._transformObject(data); + } else if (!network && Networks.get(data)) { + info.bn = PrivateKey._getRandomBN(); + info.network = Networks.get(data); + } else if (typeof(data) === 'string'){ + if (JSUtil.isHexa(data)) { + info.bn = new BN(Buffer.from(data, 'hex')); + } else { + info = PrivateKey._transformWIF(data, network); + } + } else { + throw new TypeError('First argument is an unrecognized data type.'); + } + return info; +}; + +/** + * Internal function to get a random Big Number (BN) + * + * @returns {BN} A new randomly generated BN + * @private + */ +PrivateKey._getRandomBN = function(){ + var condition; + var bn; + do { + var privbuf = Random.getRandomBuffer(32); + bn = BN.fromBuffer(privbuf); + condition = bn.lt(Point.getN()); + } while (!condition); + return bn; +}; + +/** + * Internal function to transform a WIF Buffer into a private key + * + * @param {Buffer} buf - An WIF string + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @returns {Object} An object with keys: bn, network and compressed + * @private + */ +PrivateKey._transformBuffer = function(buf, network) { + + var info = {}; + + if (buf.length === 32) { + return PrivateKey._transformBNBuffer(buf, network); + } + + info.network = Networks.get(buf[0], 'privatekey'); + + if (!info.network) { + throw new Error('Invalid network'); + } + + if (network && info.network !== Networks.get(network)) { + throw new TypeError('Private key network mismatch'); + } + + if (buf.length === 1 + 32 + 1 && buf[1 + 32 + 1 - 1] === 1) { + info.compressed = true; + } else if (buf.length === 1 + 32) { + info.compressed = false; + } else { + throw new Error('Length of buffer must be 33 (uncompressed) or 34 (compressed)'); + } + + info.bn = BN.fromBuffer(buf.slice(1, 32 + 1)); + + return info; +}; + +/** + * Internal function to transform a BN buffer into a private key + * + * @param {Buffer} buf + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @returns {object} an Object with keys: bn, network, and compressed + * @private + */ +PrivateKey._transformBNBuffer = function(buf, network) { + var info = {}; + info.network = Networks.get(network) || Networks.defaultNetwork; + info.bn = BN.fromBuffer(buf); + info.compressed = false; + return info; +}; + +/** + * Internal function to transform a WIF string into a private key + * + * @param {string} buf - An WIF string + * @returns {Object} An object with keys: bn, network and compressed + * @private + */ +PrivateKey._transformWIF = function(str, network) { + return PrivateKey._transformBuffer(Base58Check.decode(str), network); +}; + +/** + * Instantiate a PrivateKey from a Buffer with the DER or WIF representation + * + * @param {Buffer} arg + * @param {Network} network + * @return {PrivateKey} + */ +PrivateKey.fromBuffer = function(arg, network) { + return new PrivateKey(arg, network); +}; + +/** + * Internal function to transform a JSON string on plain object into a private key + * return this. + * + * @param {string} json - A JSON string or plain object + * @returns {Object} An object with keys: bn, network and compressed + * @private + */ +PrivateKey._transformObject = function(json) { + var bn = new BN(json.bn, 'hex'); + var network = Networks.get(json.network); + return { + bn: bn, + network: network, + compressed: json.compressed + }; +}; + +/** + * Instantiate a PrivateKey from a WIF string + * + * @param {string} str - The WIF encoded private key string + * @returns {PrivateKey} A new valid instance of PrivateKey + */ +PrivateKey.fromString = PrivateKey.fromWIF = function(str) { + $.checkArgument(_.isString(str), 'First argument is expected to be a string.'); + return new PrivateKey(str); +}; + +/** + * Instantiate a PrivateKey from a plain JavaScript object + * + * @param {Object} obj - The output from privateKey.toObject() + */ +PrivateKey.fromObject = function(obj) { + $.checkArgument(_.isObject(obj), 'First argument is expected to be an object.'); + return new PrivateKey(obj); +}; + +/** + * Instantiate a PrivateKey from random bytes + * + * @param {string=} network - Either "livenet" or "testnet" + * @returns {PrivateKey} A new valid instance of PrivateKey + */ +PrivateKey.fromRandom = function(network) { + var bn = PrivateKey._getRandomBN(); + return new PrivateKey(bn, network); +}; + +/** + * Check if there would be any errors when initializing a PrivateKey + * + * @param {string} data - The encoded data in various formats + * @param {string=} network - Either "livenet" or "testnet" + * @returns {null|Error} An error if exists + */ + +PrivateKey.getValidationError = function(data, network) { + var error; + try { + /* jshint nonew: false */ + new PrivateKey(data, network); + } catch (e) { + error = e; + } + return error; +}; + +/** + * Check if the parameters are valid + * + * @param {string} data - The encoded data in various formats + * @param {string=} network - Either "livenet" or "testnet" + * @returns {Boolean} If the private key is would be valid + */ +PrivateKey.isValid = function(data, network){ + if (!data) { + return false; + } + return !PrivateKey.getValidationError(data, network); +}; + +/** + * Will output the PrivateKey encoded as hex string + * + * @returns {string} + */ +PrivateKey.prototype.toString = function() { + return this.toBuffer().toString('hex'); +}; + +/** + * Will output the PrivateKey to a WIF string + * + * @returns {string} A WIP representation of the private key + */ +PrivateKey.prototype.toWIF = function() { + var network = this.network; + var compressed = this.compressed; + + var buf; + if (compressed) { + buf = Buffer.concat([Buffer.from([network.privatekey]), + this.bn.toBuffer({size: 32}), + Buffer.from([0x01])]); + } else { + buf = Buffer.concat([Buffer.from([network.privatekey]), + this.bn.toBuffer({size: 32})]); + } + + return Base58Check.encode(buf); +}; + +/** + * Will return the private key as a BN instance + * + * @returns {BN} A BN instance of the private key + */ +PrivateKey.prototype.toBigNumber = function(){ + return this.bn; +}; + +/** + * Will return the private key as a BN buffer + * + * @returns {Buffer} A buffer of the private key + */ +PrivateKey.prototype.toBuffer = function(){ + // TODO: use `return this.bn.toBuffer({ size: 32 })` in v1.0.0 + return this.bn.toBuffer(); +}; + +/** + * WARNING: This method will not be officially supported until v1.0.0. + * + * + * Will return the private key as a BN buffer without leading zero padding + * + * @returns {Buffer} A buffer of the private key + */ +PrivateKey.prototype.toBufferNoPadding = function() { + return this.bn.toBuffer(); +}; + +/** + * Will return the corresponding public key + * + * @returns {PublicKey} A public key generated from the private key + */ +PrivateKey.prototype.toPublicKey = function(){ + if (!this._pubkey) { + this._pubkey = PublicKey.fromPrivateKey(this); + } + return this._pubkey; +}; + +/** + * Will return an address for the private key + * @param {Network=} network - optional parameter specifying + * the desired network for the address + * + * @returns {Address} An address generated from the private key + */ +PrivateKey.prototype.toAddress = function(network) { + var pubkey = this.toPublicKey(); + return Address.fromPublicKey(pubkey, network || this.network); +}; + +/** + * @returns {Object} A plain object representation + */ +PrivateKey.prototype.toObject = PrivateKey.prototype.toJSON = function toObject() { + return { + bn: this.bn.toString('hex'), + compressed: this.compressed, + network: this.network.toString() + }; +}; + +/** + * Will return a string formatted for the console + * + * @returns {string} Private key + */ +PrivateKey.prototype.inspect = function() { + var uncompressed = !this.compressed ? ', uncompressed' : ''; + return ''; +}; + +module.exports = PrivateKey; + +}).call(this,require("buffer").Buffer) +},{"./address":266,"./crypto/bn":271,"./crypto/point":274,"./crypto/random":275,"./encoding/base58check":278,"./networks":286,"./publickey":289,"./util/js":309,"./util/preconditions":310,"buffer":146,"lodash":311}],289:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var BN = require('./crypto/bn'); +var Point = require('./crypto/point'); +var Hash = require('./crypto/hash'); +var JSUtil = require('./util/js'); +var Network = require('./networks'); +var _ = require('lodash'); +var $ = require('./util/preconditions'); + +/** + * Instantiate a PublicKey from a {@link PrivateKey}, {@link Point}, `string`, or `Buffer`. + * + * There are two internal properties, `network` and `compressed`, that deal with importing + * a PublicKey from a PrivateKey in WIF format. More details described on {@link PrivateKey} + * + * @example + * ```javascript + * // instantiate from a private key + * var key = PublicKey(privateKey, true); + * + * // export to as a DER hex encoded string + * var exported = key.toString(); + * + * // import the public key + * var imported = PublicKey.fromString(exported); + * ``` + * + * @param {string} data - The encoded data in various formats + * @param {Object} extra - additional options + * @param {Network=} extra.network - Which network should the address for this public key be for + * @param {String=} extra.compressed - If the public key is compressed + * @returns {PublicKey} A new valid instance of an PublicKey + * @constructor + */ +function PublicKey(data, extra) { + + if (!(this instanceof PublicKey)) { + return new PublicKey(data, extra); + } + + $.checkArgument(data, 'First argument is required, please include public key data.'); + + if (data instanceof PublicKey) { + // Return copy, but as it's an immutable object, return same argument + return data; + } + extra = extra || {}; + + var info = this._classifyArgs(data, extra); + + // validation + info.point.validate(); + + JSUtil.defineImmutable(this, { + point: info.point, + compressed: info.compressed, + network: info.network || Network.defaultNetwork + }); + + return this; +}; + +/** + * Internal function to differentiate between arguments passed to the constructor + * @param {*} data + * @param {Object} extra + */ +PublicKey.prototype._classifyArgs = function(data, extra) { + /* jshint maxcomplexity: 10 */ + var info = { + compressed: _.isUndefined(extra.compressed) || extra.compressed + }; + + // detect type of data + if (data instanceof Point) { + info.point = data; + } else if (data.x && data.y) { + info = PublicKey._transformObject(data); + } else if (typeof(data) === 'string') { + info = PublicKey._transformDER(Buffer.from(data, 'hex')); + } else if (PublicKey._isBuffer(data)) { + info = PublicKey._transformDER(data); + } else if (PublicKey._isPrivateKey(data)) { + info = PublicKey._transformPrivateKey(data); + } else { + throw new TypeError('First argument is an unrecognized data format.'); + } + if (!info.network) { + info.network = _.isUndefined(extra.network) ? undefined : Network.get(extra.network); + } + return info; +}; + +/** + * Internal function to detect if an object is a {@link PrivateKey} + * + * @param {*} param - object to test + * @returns {boolean} + * @private + */ +PublicKey._isPrivateKey = function(param) { + var PrivateKey = require('./privatekey'); + return param instanceof PrivateKey; +}; + +/** + * Internal function to detect if an object is a Buffer + * + * @param {*} param - object to test + * @returns {boolean} + * @private + */ +PublicKey._isBuffer = function(param) { + return (param instanceof Buffer) || (param instanceof Uint8Array); +}; + +/** + * Internal function to transform a private key into a public key point + * + * @param {PrivateKey} privkey - An instance of PrivateKey + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformPrivateKey = function(privkey) { + $.checkArgument(PublicKey._isPrivateKey(privkey), 'Must be an instance of PrivateKey'); + var info = {}; + info.point = Point.getG().mul(privkey.bn); + info.compressed = privkey.compressed; + info.network = privkey.network; + return info; +}; + +/** + * Internal function to transform DER into a public key point + * + * @param {Buffer} buf - An hex encoded buffer + * @param {bool=} strict - if set to false, will loosen some conditions + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformDER = function(buf, strict) { + /* jshint maxstatements: 30 */ + /* jshint maxcomplexity: 12 */ + $.checkArgument(PublicKey._isBuffer(buf), 'Must be a hex buffer of DER encoded public key'); + var info = {}; + + strict = _.isUndefined(strict) ? true : strict; + + var x; + var y; + var xbuf; + var ybuf; + + if (buf[0] === 0x04 || (!strict && (buf[0] === 0x06 || buf[0] === 0x07))) { + xbuf = buf.slice(1, 33); + ybuf = buf.slice(33, 65); + if (xbuf.length !== 32 || ybuf.length !== 32 || buf.length !== 65) { + throw new TypeError('Length of x and y must be 32 bytes'); + } + x = new BN(xbuf); + y = new BN(ybuf); + info.point = new Point(x, y); + info.compressed = false; + } else if (buf[0] === 0x03) { + xbuf = buf.slice(1); + x = new BN(xbuf); + info = PublicKey._transformX(true, x); + info.compressed = true; + } else if (buf[0] === 0x02) { + xbuf = buf.slice(1); + x = new BN(xbuf); + info = PublicKey._transformX(false, x); + info.compressed = true; + } else { + throw new TypeError('Invalid DER format public key'); + } + return info; +}; + +/** + * Internal function to transform X into a public key point + * + * @param {Boolean} odd - If the point is above or below the x axis + * @param {Point} x - The x point + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformX = function(odd, x) { + $.checkArgument(typeof odd === 'boolean', 'Must specify whether y is odd or not (true or false)'); + var info = {}; + info.point = Point.fromX(odd, x); + return info; +}; + +/** + * Internal function to transform a JSON into a public key point + * + * @param {String|Object} json - a JSON string or plain object + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformObject = function(json) { + var x = new BN(json.x, 'hex'); + var y = new BN(json.y, 'hex'); + var point = new Point(x, y); + return new PublicKey(point, { + compressed: json.compressed + }); +}; + +/** + * Instantiate a PublicKey from a PrivateKey + * + * @param {PrivateKey} privkey - An instance of PrivateKey + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromPrivateKey = function(privkey) { + $.checkArgument(PublicKey._isPrivateKey(privkey), 'Must be an instance of PrivateKey'); + var info = PublicKey._transformPrivateKey(privkey); + return new PublicKey(info.point, { + compressed: info.compressed, + network: info.network + }); +}; + +/** + * Instantiate a PublicKey from a Buffer + * @param {Buffer} buf - A DER hex buffer + * @param {bool=} strict - if set to false, will loosen some conditions + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromDER = PublicKey.fromBuffer = function(buf, strict) { + $.checkArgument(PublicKey._isBuffer(buf), 'Must be a hex buffer of DER encoded public key'); + var info = PublicKey._transformDER(buf, strict); + return new PublicKey(info.point, { + compressed: info.compressed + }); +}; + +/** + * Instantiate a PublicKey from a Point + * + * @param {Point} point - A Point instance + * @param {boolean=} compressed - whether to store this public key as compressed format + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromPoint = function(point, compressed) { + $.checkArgument(point instanceof Point, 'First argument must be an instance of Point.'); + return new PublicKey(point, { + compressed: compressed + }); +}; + +/** + * Instantiate a PublicKey from a DER hex encoded string + * + * @param {string} str - A DER hex string + * @param {String=} encoding - The type of string encoding + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromString = function(str, encoding) { + var buf = Buffer.from(str, encoding || 'hex'); + var info = PublicKey._transformDER(buf); + return new PublicKey(info.point, { + compressed: info.compressed + }); +}; + +/** + * Instantiate a PublicKey from an X Point + * + * @param {Boolean} odd - If the point is above or below the x axis + * @param {Point} x - The x point + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromX = function(odd, x) { + var info = PublicKey._transformX(odd, x); + return new PublicKey(info.point, { + compressed: info.compressed + }); +}; + +/** + * Check if there would be any errors when initializing a PublicKey + * + * @param {string} data - The encoded data in various formats + * @returns {null|Error} An error if exists + */ +PublicKey.getValidationError = function(data) { + var error; + try { + /* jshint nonew: false */ + new PublicKey(data); + } catch (e) { + error = e; + } + return error; +}; + +/** + * Check if the parameters are valid + * + * @param {string} data - The encoded data in various formats + * @returns {Boolean} If the public key would be valid + */ +PublicKey.isValid = function(data) { + return !PublicKey.getValidationError(data); +}; + +/** + * @returns {Object} A plain object of the PublicKey + */ +PublicKey.prototype.toObject = PublicKey.prototype.toJSON = function toObject() { + return { + x: this.point.getX().toString('hex', 2), + y: this.point.getY().toString('hex', 2), + compressed: this.compressed + }; +}; + +/** + * Will output the PublicKey to a DER Buffer + * + * @returns {Buffer} A DER hex encoded buffer + */ +PublicKey.prototype.toBuffer = PublicKey.prototype.toDER = function() { + var x = this.point.getX(); + var y = this.point.getY(); + + var xbuf = x.toBuffer({ + size: 32 + }); + var ybuf = y.toBuffer({ + size: 32 + }); + + var prefix; + if (!this.compressed) { + prefix = Buffer.from([0x04]); + return Buffer.concat([prefix, xbuf, ybuf]); + } else { + var odd = ybuf[ybuf.length - 1] % 2; + if (odd) { + prefix = Buffer.from([0x03]); + } else { + prefix = Buffer.from([0x02]); + } + return Buffer.concat([prefix, xbuf]); + } +}; + +/** + * Will return a sha256 + ripemd160 hash of the serialized public key + * @see https://github.com/bitcoin/bitcoin/blob/master/src/pubkey.h#L141 + * @returns {Buffer} + */ +PublicKey.prototype._getID = function _getID() { + return Hash.sha256ripemd160(this.toBuffer()); +}; + +/** + * Will return an address for the public key + * + * @param {String|Network=} network - Which network should the address be for + * @returns {Address} An address generated from the public key + */ +PublicKey.prototype.toAddress = function(network) { + var Address = require('./address'); + return Address.fromPublicKey(this, network || this.network); +}; + +/** + * Will output the PublicKey to a DER encoded hex string + * + * @returns {string} A DER hex encoded string + */ +PublicKey.prototype.toString = function() { + return this.toDER().toString('hex'); +}; + +/** + * Will return a string formatted for the console + * + * @returns {string} Public key + */ +PublicKey.prototype.inspect = function() { + return ''; +}; + + +module.exports = PublicKey; + +}).call(this,require("buffer").Buffer) +},{"./address":266,"./crypto/bn":271,"./crypto/hash":273,"./crypto/point":274,"./networks":286,"./privatekey":288,"./util/js":309,"./util/preconditions":310,"buffer":146,"lodash":311}],290:[function(require,module,exports){ +module.exports = require('./script'); + +module.exports.Interpreter = require('./interpreter'); + +},{"./interpreter":291,"./script":292}],291:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); + +var Script = require('./script'); +var Opcode = require('../opcode'); +var BN = require('../crypto/bn'); +var Hash = require('../crypto/hash'); +var Signature = require('../crypto/signature'); +var PublicKey = require('../publickey'); + +/** + * Bitcoin transactions contain scripts. Each input has a script called the + * scriptSig, and each output has a script called the scriptPubkey. To validate + * an input, the input's script is concatenated with the referenced output script, + * and the result is executed. If at the end of execution the stack contains a + * "true" value, then the transaction is valid. + * + * The primary way to use this class is via the verify function. + * e.g., Interpreter().verify( ... ); + */ +var Interpreter = function Interpreter(obj) { + if (!(this instanceof Interpreter)) { + return new Interpreter(obj); + } + if (obj) { + this.initialize(); + this.set(obj); + } else { + this.initialize(); + } +}; + +Interpreter.prototype.verifyWitnessProgram = function(version, program, witness, satoshis, flags) { + + var scriptPubKey = new Script(); + var stack = []; + + if (version === 0) { + if (program.length === 32) { + if (witness.length === 0) { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_WITNESS_EMPTY'; + return false; + } + + var scriptPubKeyBuffer = witness[witness.length - 1]; + scriptPubKey = new Script(scriptPubKeyBuffer); + var hash = Hash.sha256(scriptPubKeyBuffer); + if (hash.toString('hex') !== program.toString('hex')) { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH'; + return false; + } + + stack = witness.slice(0, -1); + } else if (program.length === 20) { + if (witness.length !== 2) { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH'; + return false; + } + + scriptPubKey.add(Opcode.OP_DUP); + scriptPubKey.add(Opcode.OP_HASH160); + scriptPubKey.add(program); + scriptPubKey.add(Opcode.OP_EQUALVERIFY); + scriptPubKey.add(Opcode.OP_CHECKSIG); + + stack = witness; + + } else { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_WRONG_LENGTH'; + return false; + } + } else if ((flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM'; + return false; + } else { + return true; + } + + this.initialize(); + + this.set({ + script: scriptPubKey, + stack: stack, + sigversion: 1, + satoshis: satoshis, + flags: flags, + }); + + if (!this.evaluate()) { + return false; + } + + if (this.stack.length !== 1) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE'; + return false; + } + + var buf = this.stack[this.stack.length - 1]; + if (!Interpreter.castToBool(buf)) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_STACK'; + return false; + } + + return true; +}; + + + +/** + * Verifies a Script by executing it and returns true if it is valid. + * This function needs to be provided with the scriptSig and the scriptPubkey + * separately. + * @param {Script} scriptSig - the script's first part (corresponding to the tx input) + * @param {Script} scriptPubkey - the script's last part (corresponding to the tx output) + * @param {Transaction=} tx - the Transaction containing the scriptSig in one input (used + * to check signature validity for some opcodes like OP_CHECKSIG) + * @param {number} nin - index of the transaction input containing the scriptSig verified. + * @param {number} flags - evaluation flags. See Interpreter.SCRIPT_* constants + * @param {number} witness - array of witness data + * @param {number} satoshis - number of satoshis created by this output + * + * Translated from bitcoind's VerifyScript + */ +Interpreter.prototype.verify = function(scriptSig, scriptPubkey, tx, nin, flags, witness, satoshis) { + + var Transaction = require('../transaction'); + if (_.isUndefined(tx)) { + tx = new Transaction(); + } + if (_.isUndefined(nin)) { + nin = 0; + } + if (_.isUndefined(flags)) { + flags = 0; + } + if (_.isUndefined(witness)) { + witness = null; + } + if (_.isUndefined(satoshis)) { + satoshis = 0; + } + + this.set({ + script: scriptSig, + tx: tx, + nin: nin, + sigversion: 0, + satoshis: 0, + flags: flags + }); + var stackCopy; + + if ((flags & Interpreter.SCRIPT_VERIFY_SIGPUSHONLY) !== 0 && !scriptSig.isPushOnly()) { + this.errstr = 'SCRIPT_ERR_SIG_PUSHONLY'; + return false; + } + + // evaluate scriptSig + if (!this.evaluate()) { + return false; + } + + if (flags & Interpreter.SCRIPT_VERIFY_P2SH) { + stackCopy = this.stack.slice(); + } + + var stack = this.stack; + this.initialize(); + this.set({ + script: scriptPubkey, + stack: stack, + tx: tx, + nin: nin, + flags: flags + }); + + // evaluate scriptPubkey + if (!this.evaluate()) { + return false; + } + + if (this.stack.length === 0) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_NO_RESULT'; + return false; + } + + var buf = this.stack[this.stack.length - 1]; + if (!Interpreter.castToBool(buf)) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_STACK'; + return false; + } + + var hadWitness = false; + if ((flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { + var witnessValues = {}; + if (scriptPubkey.isWitnessProgram(witnessValues)) { + hadWitness = true; + if (scriptSig.toBuffer().length !== 0) { + return false; + } + if (!this.verifyWitnessProgram(witnessValues.version, witnessValues.program, witness, satoshis, this.flags)) { + return false; + } + } + } + + // Additional validation for spend-to-script-hash transactions: + if ((flags & Interpreter.SCRIPT_VERIFY_P2SH) && scriptPubkey.isScriptHashOut()) { + // scriptSig must be literals-only or validation fails + if (!scriptSig.isPushOnly()) { + this.errstr = 'SCRIPT_ERR_SIG_PUSHONLY'; + return false; + } + + // stackCopy cannot be empty here, because if it was the + // P2SH HASH <> EQUAL scriptPubKey would be evaluated with + // an empty stack and the EvalScript above would return false. + if (stackCopy.length === 0) { + throw new Error('internal error - stack copy empty'); + } + + var redeemScriptSerialized = stackCopy[stackCopy.length - 1]; + var redeemScript = Script.fromBuffer(redeemScriptSerialized); + stackCopy.pop(); + + this.initialize(); + this.set({ + script: redeemScript, + stack: stackCopy, + tx: tx, + nin: nin, + flags: flags + }); + + // evaluate redeemScript + if (!this.evaluate()) { + return false; + } + + if (stackCopy.length === 0) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_NO_P2SH_STACK'; + return false; + } + + if (!Interpreter.castToBool(stackCopy[stackCopy.length - 1])) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_P2SH_STACK'; + return false; + } + if ((flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { + var p2shWitnessValues = {}; + if (redeemScript.isWitnessProgram(p2shWitnessValues)) { + hadWitness = true; + var redeemScriptPush = new Script(); + redeemScriptPush.add(redeemScript.toBuffer()); + if (scriptSig.toHex() !== redeemScriptPush.toHex()) { + this.errstr = 'SCRIPT_ERR_WITNESS_MALLEATED_P2SH'; + return false; + } + + if (!this.verifyWitnessProgram(p2shWitnessValues.version, p2shWitnessValues.program, witness, satoshis, this.flags)) { + return false; + } + // Bypass the cleanstack check at the end. The actual stack is obviously not clean + // for witness programs. + stack = [stack[0]]; + } + } + } + + // The CLEANSTACK check is only performed after potential P2SH evaluation, + // as the non-P2SH evaluation of a P2SH script will obviously not result in + // a clean stack (the P2SH inputs remain). The same holds for witness + // evaluation. + if ((this.flags & Interpreter.SCRIPT_VERIFY_CLEANSTACK) != 0) { + // Disallow CLEANSTACK without P2SH, as otherwise a switch + // CLEANSTACK->P2SH+CLEANSTACK would be possible, which is not a + // softfork (and P2SH should be one). + if ((this.flags & Interpreter.SCRIPT_VERIFY_P2SH) == 0) + throw 'flags & SCRIPT_VERIFY_P2SH'; + + if (stackCopy.length != 1) { + this.errstr = 'SCRIPT_ERR_CLEANSTACK'; + return false; + } + } + + if ((this.flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { + if (!hadWitness && witness.length > 0) { + this.errstr = 'SCRIPT_ERR_WITNESS_UNEXPECTED'; + return false; + } + } + + return true; +}; + +module.exports = Interpreter; + +Interpreter.prototype.initialize = function(obj) { + this.stack = []; + this.altstack = []; + this.pc = 0; + this.satoshis = 0; + this.sigversion = 0; + this.pbegincodehash = 0; + this.nOpCount = 0; + this.vfExec = []; + this.errstr = ''; + this.flags = 0; +}; + +Interpreter.prototype.set = function(obj) { + this.script = obj.script || this.script; + this.tx = obj.tx || this.tx; + this.nin = typeof obj.nin !== 'undefined' ? obj.nin : this.nin; + this.stack = obj.stack || this.stack; + this.altstack = obj.altack || this.altstack; + this.pc = typeof obj.pc !== 'undefined' ? obj.pc : this.pc; + this.pbegincodehash = typeof obj.pbegincodehash !== 'undefined' ? obj.pbegincodehash : this.pbegincodehash; + this.sigversion = typeof obj.sigversion !== 'undefined' ? obj.sigversion : this.sigversion; + this.satoshis = typeof obj.satoshis !== 'undefined' ? obj.satoshis : this.satoshis; + this.nOpCount = typeof obj.nOpCount !== 'undefined' ? obj.nOpCount : this.nOpCount; + this.vfExec = obj.vfExec || this.vfExec; + this.errstr = obj.errstr || this.errstr; + this.flags = typeof obj.flags !== 'undefined' ? obj.flags : this.flags; +}; + +Interpreter.true = Buffer.from([1]); +Interpreter.false = Buffer.from([]); + +Interpreter.MAX_SCRIPT_ELEMENT_SIZE = 520; + +Interpreter.LOCKTIME_THRESHOLD = 500000000; +Interpreter.LOCKTIME_THRESHOLD_BN = new BN(Interpreter.LOCKTIME_THRESHOLD); + +// flags taken from bitcoind +// bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 +Interpreter.SCRIPT_VERIFY_NONE = 0; + +// Making v1-v16 witness program non-standard +Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM = (1 << 12); + +// Evaluate P2SH subscripts (softfork safe, BIP16). +Interpreter.SCRIPT_VERIFY_P2SH = (1 << 0); + +// Passing a non-strict-DER signature or one with undefined hashtype to a checksig operation causes script failure. +// Passing a pubkey that is not (0x04 + 64 bytes) or (0x02 or 0x03 + 32 bytes) to checksig causes that pubkey to be +// skipped (not softfork safe: this flag can widen the validity of OP_CHECKSIG OP_NOT). +Interpreter.SCRIPT_VERIFY_STRICTENC = (1 << 1); + +// Passing a non-strict-DER signature to a checksig operation causes script failure (softfork safe, BIP62 rule 1) +Interpreter.SCRIPT_VERIFY_DERSIG = (1 << 2); + +// Passing a non-strict-DER signature or one with S > order/2 to a checksig operation causes script failure +// (softfork safe, BIP62 rule 5). +Interpreter.SCRIPT_VERIFY_LOW_S = (1 << 3); + +// verify dummy stack item consumed by CHECKMULTISIG is of zero-length (softfork safe, BIP62 rule 7). +Interpreter.SCRIPT_VERIFY_NULLDUMMY = (1 << 4); + +// Using a non-push operator in the scriptSig causes script failure (softfork safe, BIP62 rule 2). +Interpreter.SCRIPT_VERIFY_SIGPUSHONLY = (1 << 5); + +// Require minimal encodings for all push operations (OP_0... OP_16, OP_1NEGATE where possible, direct +// pushes up to 75 bytes, OP_PUSHDATA up to 255 bytes, OP_PUSHDATA2 for anything larger). Evaluating +// any other push causes the script to fail (BIP62 rule 3). +// In addition, whenever a stack element is interpreted as a number, it must be of minimal length (BIP62 rule 4). +// (softfork safe) +Interpreter.SCRIPT_VERIFY_MINIMALDATA = (1 << 6); + +// Discourage use of NOPs reserved for upgrades (NOP1-10) +// +// Provided so that nodes can avoid accepting or mining transactions +// containing executed NOP's whose meaning may change after a soft-fork, +// thus rendering the script invalid; with this flag set executing +// discouraged NOPs fails the script. This verification flag will never be +// a mandatory flag applied to scripts in a block. NOPs that are not +// executed, e.g. within an unexecuted IF ENDIF block, are *not* rejected. +Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1 << 7); + + +// Require that only a single stack element remains after evaluation. This +// changes the success criterion from "At least one stack element must +// remain, and when interpreted as a boolean, it must be true" to "Exactly +// one stack element must remain, and when interpreted as a boolean, it must +// be true". +// (softfork safe, BIP62 rule 6) +// Note: CLEANSTACK should never be used without P2SH or WITNESS. +Interpreter.SCRIPT_VERIFY_CLEANSTACK = (1 << 8), + +// CLTV See BIP65 for details. +Interpreter.SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY = (1 << 9); +Interpreter.SCRIPT_VERIFY_WITNESS = (1 << 10); +Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1 << 11); + +// support CHECKSEQUENCEVERIFY opcode +// +// See BIP112 for details +Interpreter.SCRIPT_VERIFY_CHECKSEQUENCEVERIFY = (1 << 10); + +// +// Segwit script only: Require the argument of OP_IF/NOTIF to be exactly +// 0x01 or empty vector +// +Interpreter.SCRIPT_VERIFY_MINIMALIF = (1 << 13); + + +// Signature(s) must be empty vector if an CHECK(MULTI)SIG operation failed +// +Interpreter.SCRIPT_VERIFY_NULLFAIL = (1 << 14); + +// Public keys in scripts must be compressed +// +Interpreter.SCRIPT_VERIFY_WITNESS_PUBKEYTYPE = (1 << 15); + +// Do we accept signature using SIGHASH_FORKID +// +Interpreter.SCRIPT_ENABLE_SIGHASH_FORKID = (1 << 16); + +// Do we accept activate replay protection using a different fork id. +// +Interpreter.SCRIPT_ENABLE_REPLAY_PROTECTION = (1 << 17); + +// Enable new opcodes. +// +Interpreter.SCRIPT_ENABLE_MONOLITH_OPCODES = (1 << 18); + + + +/* Below flags apply in the context of BIP 68*/ +/** + * If this flag set, CTxIn::nSequence is NOT interpreted as a relative + * lock-time. + */ +Interpreter.SEQUENCE_LOCKTIME_DISABLE_FLAG = (1 << 31); + +/** + * If CTxIn::nSequence encodes a relative lock-time and this flag is set, + * the relative lock-time has units of 512 seconds, otherwise it specifies + * blocks with a granularity of 1. + */ +Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG = (1 << 22); + +/** + * If CTxIn::nSequence encodes a relative lock-time, this mask is applied to + * extract that lock-time from the sequence field. + */ +Interpreter.SEQUENCE_LOCKTIME_MASK = 0x0000ffff; + + +Interpreter.castToBool = function(buf) { + for (var i = 0; i < buf.length; i++) { + if (buf[i] !== 0) { + // can be negative zero + if (i === buf.length - 1 && buf[i] === 0x80) { + return false; + } + return true; + } + } + return false; +}; + +/** + * Translated from bitcoind's CheckSignatureEncoding + */ +Interpreter.prototype.checkSignatureEncoding = function(buf) { + var sig; + + // Empty signature. Not strictly DER encoded, but allowed to provide a + // compact way to provide an invalid signature for use with CHECK(MULTI)SIG + if (buf.length == 0) { + return true; + } + + if ((this.flags & (Interpreter.SCRIPT_VERIFY_DERSIG | Interpreter.SCRIPT_VERIFY_LOW_S | Interpreter.SCRIPT_VERIFY_STRICTENC)) !== 0 && !Signature.isTxDER(buf)) { + this.errstr = 'SCRIPT_ERR_SIG_DER_INVALID_FORMAT'; + return false; + } else if ((this.flags & Interpreter.SCRIPT_VERIFY_LOW_S) !== 0) { + sig = Signature.fromTxFormat(buf); + if (!sig.hasLowS()) { + this.errstr = 'SCRIPT_ERR_SIG_DER_HIGH_S'; + return false; + } + } else if ((this.flags & Interpreter.SCRIPT_VERIFY_STRICTENC) !== 0) { + sig = Signature.fromTxFormat(buf); + if (!sig.hasDefinedHashtype()) { + this.errstr = 'SCRIPT_ERR_SIG_HASHTYPE'; + return false; + } + } + + return true; +}; + +/** + * Translated from bitcoind's CheckPubKeyEncoding + */ +Interpreter.prototype.checkPubkeyEncoding = function(buf) { + if ((this.flags & Interpreter.SCRIPT_VERIFY_STRICTENC) !== 0 && !PublicKey.isValid(buf)) { + this.errstr = 'SCRIPT_ERR_PUBKEYTYPE'; + return false; + } + + // Only compressed keys are accepted in segwit + if ((this.flags & Interpreter.SCRIPT_VERIFY_WITNESS_PUBKEYTYPE) != 0 && this.sigversion == 1 && !PublicKey.fromBuffer(buf).compressed) { + this.errstr = 'SCRIPT_ERR_WITNESS_PUBKEYTYPE'; + return false; + } + + return true; +}; + +/** + * Based on bitcoind's EvalScript function, with the inner loop moved to + * Interpreter.prototype.step() + * bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 + */ +Interpreter.prototype.evaluate = function() { + if (this.script.toBuffer().length > 10000) { + this.errstr = 'SCRIPT_ERR_SCRIPT_SIZE'; + return false; + } + + try { + while (this.pc < this.script.chunks.length) { + var fSuccess = this.step(); + if (!fSuccess) { + return false; + } + } + + // Size limits + if (this.stack.length + this.altstack.length > 1000) { + this.errstr = 'SCRIPT_ERR_STACK_SIZE'; + return false; + } + } catch (e) { + this.errstr = 'SCRIPT_ERR_UNKNOWN_ERROR: ' + e; + return false; + } + + if (this.vfExec.length > 0) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } + + return true; +}; + +/** + * Checks a locktime parameter with the transaction's locktime. + * There are two times of nLockTime: lock-by-blockheight and lock-by-blocktime, + * distinguished by whether nLockTime < LOCKTIME_THRESHOLD = 500000000 + * + * See the corresponding code on bitcoin core: + * https://github.com/bitcoin/bitcoin/blob/ffd75adce01a78b3461b3ff05bcc2b530a9ce994/src/script/interpreter.cpp#L1129 + * + * @param {BN} nLockTime the locktime read from the script + * @return {boolean} true if the transaction's locktime is less than or equal to + * the transaction's locktime + */ +Interpreter.prototype.checkLockTime = function(nLockTime) { + + // We want to compare apples to apples, so fail the script + // unless the type of nLockTime being tested is the same as + // the nLockTime in the transaction. + if (!( + (this.tx.nLockTime < Interpreter.LOCKTIME_THRESHOLD && nLockTime.lt(Interpreter.LOCKTIME_THRESHOLD_BN)) || + (this.tx.nLockTime >= Interpreter.LOCKTIME_THRESHOLD && nLockTime.gte(Interpreter.LOCKTIME_THRESHOLD_BN)) + )) { + return false; + } + + // Now that we know we're comparing apples-to-apples, the + // comparison is a simple numeric one. + if (nLockTime.gt(new BN(this.tx.nLockTime))) { + return false; + } + + // Finally the nLockTime feature can be disabled and thus + // CHECKLOCKTIMEVERIFY bypassed if every txin has been + // finalized by setting nSequence to maxint. The + // transaction would be allowed into the blockchain, making + // the opcode ineffective. + // + // Testing if this vin is not final is sufficient to + // prevent this condition. Alternatively we could test all + // inputs, but testing just this input minimizes the data + // required to prove correct CHECKLOCKTIMEVERIFY execution. + if (!this.tx.inputs[this.nin].isFinal()) { + return false; + } + + return true; +} + + +/** + * Checks a sequence parameter with the transaction's sequence. + * @param {BN} nSequence the sequence read from the script + * @return {boolean} true if the transaction's sequence is less than or equal to + * the transaction's sequence + */ +Interpreter.prototype.checkSequence = function(nSequence) { + + // Relative lock times are supported by comparing the passed in operand to + // the sequence number of the input. + var txToSequence = this.tx.inputs[this.nin].sequenceNumber; + + // Fail if the transaction's version number is not set high enough to + // trigger BIP 68 rules. + if (this.tx.version < 2) { + return false; + } + + // Sequence numbers with their most significant bit set are not consensus + // constrained. Testing that the transaction's sequence number do not have + // this bit set prevents using this property to get around a + // CHECKSEQUENCEVERIFY check. + if (txToSequence & SEQUENCE_LOCKTIME_DISABLE_FLAG) { + return false; + } + + // Mask off any bits that do not have consensus-enforced meaning before + // doing the integer comparisons + var nLockTimeMask = + Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG | Interpreter.SEQUENCE_LOCKTIME_MASK; + var txToSequenceMasked = new BN(txToSequence & nLockTimeMask); + var nSequenceMasked = nSequence.and(nLockTimeMask); + + // There are two kinds of nSequence: lock-by-blockheight and + // lock-by-blocktime, distinguished by whether nSequenceMasked < + // CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG. + // + // We want to compare apples to apples, so fail the script unless the type + // of nSequenceMasked being tested is the same as the nSequenceMasked in the + // transaction. + var SEQUENCE_LOCKTIME_TYPE_FLAG_BN = new BN(Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG); + + if (!((txToSequenceMasked.lt(SEQUENCE_LOCKTIME_TYPE_FLAG_BN) && + nSequenceMasked.lt(SEQUENCE_LOCKTIME_TYPE_FLAG_BN)) || + (txToSequenceMasked.gte(SEQUENCE_LOCKTIME_TYPE_FLAG_BN) && + nSequenceMasked.gte(SEQUENCE_LOCKTIME_TYPE_FLAG_BN)))) { + return false; + } + + // Now that we know we're comparing apples-to-apples, the comparison is a + // simple numeric one. + if (nSequenceMasked.gt(txToSequenceMasked)) { + return false; + } + return true; + } + +/** + * Based on the inner loop of bitcoind's EvalScript function + * bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 + */ +Interpreter.prototype.step = function() { + var fRequireMinimal = (this.flags & Interpreter.SCRIPT_VERIFY_MINIMALDATA) !== 0; + + //bool fExec = !count(vfExec.begin(), vfExec.end(), false); + var fExec = (this.vfExec.indexOf(false) === -1); + var buf, buf1, buf2, spliced, n, x1, x2, bn, bn1, bn2, bufSig, bufPubkey, subscript; + var sig, pubkey; + var fValue, fSuccess; + + // Read instruction + var chunk = this.script.chunks[this.pc]; + this.pc++; + var opcodenum = chunk.opcodenum; + if (_.isUndefined(opcodenum)) { + this.errstr = 'SCRIPT_ERR_UNDEFINED_OPCODE'; + return false; + } + if (chunk.buf && chunk.buf.length > Interpreter.MAX_SCRIPT_ELEMENT_SIZE) { + this.errstr = 'SCRIPT_ERR_PUSH_SIZE'; + return false; + } + + // Note how Opcode.OP_RESERVED does not count towards the opcode limit. + if (opcodenum > Opcode.OP_16 && ++(this.nOpCount) > 201) { + this.errstr = 'SCRIPT_ERR_OP_COUNT'; + return false; + } + + + if (opcodenum === Opcode.OP_CAT || + opcodenum === Opcode.OP_SUBSTR || + opcodenum === Opcode.OP_LEFT || + opcodenum === Opcode.OP_RIGHT || + opcodenum === Opcode.OP_INVERT || + opcodenum === Opcode.OP_AND || + opcodenum === Opcode.OP_OR || + opcodenum === Opcode.OP_XOR || + opcodenum === Opcode.OP_2MUL || + opcodenum === Opcode.OP_2DIV || + opcodenum === Opcode.OP_MUL || + opcodenum === Opcode.OP_DIV || + opcodenum === Opcode.OP_MOD || + opcodenum === Opcode.OP_LSHIFT || + opcodenum === Opcode.OP_RSHIFT) { + this.errstr = 'SCRIPT_ERR_DISABLED_OPCODE'; + return false; + } + + if (fExec && 0 <= opcodenum && opcodenum <= Opcode.OP_PUSHDATA4) { + if (fRequireMinimal && !this.script.checkMinimalPush(this.pc - 1)) { + this.errstr = 'SCRIPT_ERR_MINIMALDATA'; + return false; + } + if (!chunk.buf) { + this.stack.push(Interpreter.false); + } else if (chunk.len !== chunk.buf.length) { + throw new Error('Length of push value not equal to length of data'); + } else { + this.stack.push(chunk.buf); + } + } else if (fExec || (Opcode.OP_IF <= opcodenum && opcodenum <= Opcode.OP_ENDIF)) { + switch (opcodenum) { + // Push value + case Opcode.OP_1NEGATE: + case Opcode.OP_1: + case Opcode.OP_2: + case Opcode.OP_3: + case Opcode.OP_4: + case Opcode.OP_5: + case Opcode.OP_6: + case Opcode.OP_7: + case Opcode.OP_8: + case Opcode.OP_9: + case Opcode.OP_10: + case Opcode.OP_11: + case Opcode.OP_12: + case Opcode.OP_13: + case Opcode.OP_14: + case Opcode.OP_15: + case Opcode.OP_16: + { + // ( -- value) + // ScriptNum bn((int)opcode - (int)(Opcode.OP_1 - 1)); + n = opcodenum - (Opcode.OP_1 - 1); + buf = new BN(n).toScriptNumBuffer(); + this.stack.push(buf); + // The result of these opcodes should always be the minimal way to push the data + // they push, so no need for a CheckMinimalPush here. + } + break; + + + // + // Control + // + case Opcode.OP_NOP: + break; + + case Opcode.OP_NOP2: + case Opcode.OP_CHECKLOCKTIMEVERIFY: + + if (!(this.flags & Interpreter.SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY)) { + // not enabled; treat as a NOP2 + if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; + return false; + } + break; + } + + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + + // Note that elsewhere numeric opcodes are limited to + // operands in the range -2**31+1 to 2**31-1, however it is + // legal for opcodes to produce results exceeding that + // range. This limitation is implemented by CScriptNum's + // default 4-byte limit. + // + // If we kept to that limit we'd have a year 2038 problem, + // even though the nLockTime field in transactions + // themselves is uint32 which only becomes meaningless + // after the year 2106. + // + // Thus as a special case we tell CScriptNum to accept up + // to 5-byte bignums, which are good until 2**39-1, well + // beyond the 2**32-1 limit of the nLockTime field itself. + var nLockTime = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal, 5); + + // In the rare event that the argument may be < 0 due to + // some arithmetic being done first, you can always use + // 0 MAX CHECKLOCKTIMEVERIFY. + if (nLockTime.lt(new BN(0))) { + this.errstr = 'SCRIPT_ERR_NEGATIVE_LOCKTIME'; + return false; + } + + // Actually compare the specified lock time with the transaction. + if (!this.checkLockTime(nLockTime)) { + this.errstr = 'SCRIPT_ERR_UNSATISFIED_LOCKTIME'; + return false; + } + break; + + case Opcode.OP_NOP3: + case Opcode.OP_CHECKSEQUENCEVERIFY: + + if (!(this.flags & Interpreter.SCRIPT_VERIFY_CHECKSEQUENCEVERIFY)) { + // not enabled; treat as a NOP3 + if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; + return false; + } + break; + } + + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + + + // nSequence, like nLockTime, is a 32-bit unsigned + // integer field. See the comment in CHECKLOCKTIMEVERIFY + // regarding 5-byte numeric operands. + + var nSequence = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal, 5); + + + // In the rare event that the argument may be < 0 due to + // some arithmetic being done first, you can always use + // 0 MAX CHECKSEQUENCEVERIFY. + if (nSequence.lt(new BN(0))) { + this.errstr = 'SCRIPT_ERR_NEGATIVE_LOCKTIME'; + return false; + } + + // To provide for future soft-fork extensibility, if the + // operand has the disabled lock-time flag set, + // CHECKSEQUENCEVERIFY behaves as a NOP. + if ((nSequence & + Interpreter.SEQUENCE_LOCKTIME_DISABLE_FLAG) != 0) { + break; + } + + // Actually compare the specified lock time with the transaction. + if (!this.checkSequence(nSequence)) { + this.errstr = 'SCRIPT_ERR_UNSATISFIED_LOCKTIME'; + return false; + } + break; + + + + case Opcode.OP_NOP1: + case Opcode.OP_NOP4: + case Opcode.OP_NOP5: + case Opcode.OP_NOP6: + case Opcode.OP_NOP7: + case Opcode.OP_NOP8: + case Opcode.OP_NOP9: + case Opcode.OP_NOP10: + { + if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; + return false; + } + } + break; + + case Opcode.OP_IF: + case Opcode.OP_NOTIF: + { + // if [statements] [else [statements]] endif + // bool fValue = false; + fValue = false; + if (fExec) { + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } + + buf = this.stack[this.stack.length - 1]; + + if (this.flags & Interpreter.SCRIPT_VERIFY_MINIMALIF) { + buf = this.stack[this.stack.length - 1]; + if (buf.length > 1) { + this.errstr = 'SCRIPT_ERR_MINIMALIF'; + return false; + } + if (buf.length == 1 && buf[0]!=1) { + this.errstr = 'SCRIPT_ERR_MINIMALIF'; + return false; + } + } + fValue = Interpreter.castToBool(buf); + if (opcodenum === Opcode.OP_NOTIF) { + fValue = !fValue; + } + this.stack.pop(); + } + this.vfExec.push(fValue); + } + break; + + case Opcode.OP_ELSE: + { + if (this.vfExec.length === 0) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } + this.vfExec[this.vfExec.length - 1] = !this.vfExec[this.vfExec.length - 1]; + } + break; + + case Opcode.OP_ENDIF: + { + if (this.vfExec.length === 0) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } + this.vfExec.pop(); + } + break; + + case Opcode.OP_VERIFY: + { + // (true -- ) or + // (false -- false) and return + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + fValue = Interpreter.castToBool(buf); + if (fValue) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_VERIFY'; + return false; + } + } + break; + + case Opcode.OP_RETURN: + { + this.errstr = 'SCRIPT_ERR_OP_RETURN'; + return false; + } + break; + + + // + // Stack ops + // + case Opcode.OP_TOALTSTACK: + { + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.altstack.push(this.stack.pop()); + } + break; + + case Opcode.OP_FROMALTSTACK: + { + if (this.altstack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_ALTSTACK_OPERATION'; + return false; + } + this.stack.push(this.altstack.pop()); + } + break; + + case Opcode.OP_2DROP: + { + // (x1 x2 -- ) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.pop(); + this.stack.pop(); + } + break; + + case Opcode.OP_2DUP: + { + // (x1 x2 -- x1 x2 x1 x2) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 2]; + buf2 = this.stack[this.stack.length - 1]; + this.stack.push(buf1); + this.stack.push(buf2); + } + break; + + case Opcode.OP_3DUP: + { + // (x1 x2 x3 -- x1 x2 x3 x1 x2 x3) + if (this.stack.length < 3) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 3]; + buf2 = this.stack[this.stack.length - 2]; + var buf3 = this.stack[this.stack.length - 1]; + this.stack.push(buf1); + this.stack.push(buf2); + this.stack.push(buf3); + } + break; + + case Opcode.OP_2OVER: + { + // (x1 x2 x3 x4 -- x1 x2 x3 x4 x1 x2) + if (this.stack.length < 4) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 4]; + buf2 = this.stack[this.stack.length - 3]; + this.stack.push(buf1); + this.stack.push(buf2); + } + break; + + case Opcode.OP_2ROT: + { + // (x1 x2 x3 x4 x5 x6 -- x3 x4 x5 x6 x1 x2) + if (this.stack.length < 6) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + spliced = this.stack.splice(this.stack.length - 6, 2); + this.stack.push(spliced[0]); + this.stack.push(spliced[1]); + } + break; + + case Opcode.OP_2SWAP: + { + // (x1 x2 x3 x4 -- x3 x4 x1 x2) + if (this.stack.length < 4) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + spliced = this.stack.splice(this.stack.length - 4, 2); + this.stack.push(spliced[0]); + this.stack.push(spliced[1]); + } + break; + + case Opcode.OP_IFDUP: + { + // (x - 0 | x x) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + fValue = Interpreter.castToBool(buf); + if (fValue) { + this.stack.push(buf); + } + } + break; + + case Opcode.OP_DEPTH: + { + // -- stacksize + buf = new BN(this.stack.length).toScriptNumBuffer(); + this.stack.push(buf); + } + break; + + case Opcode.OP_DROP: + { + // (x -- ) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.pop(); + } + break; + + case Opcode.OP_DUP: + { + // (x -- x x) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.push(this.stack[this.stack.length - 1]); + } + break; + + case Opcode.OP_NIP: + { + // (x1 x2 -- x2) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.splice(this.stack.length - 2, 1); + } + break; + + case Opcode.OP_OVER: + { + // (x1 x2 -- x1 x2 x1) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.push(this.stack[this.stack.length - 2]); + } + break; + + case Opcode.OP_PICK: + case Opcode.OP_ROLL: + { + // (xn ... x2 x1 x0 n - xn ... x2 x1 x0 xn) + // (xn ... x2 x1 x0 n - ... x2 x1 x0 xn) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + bn = BN.fromScriptNumBuffer(buf, fRequireMinimal); + n = bn.toNumber(); + this.stack.pop(); + if (n < 0 || n >= this.stack.length) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - n - 1]; + if (opcodenum === Opcode.OP_ROLL) { + this.stack.splice(this.stack.length - n - 1, 1); + } + this.stack.push(buf); + } + break; + + case Opcode.OP_ROT: + { + // (x1 x2 x3 -- x2 x3 x1) + // x2 x1 x3 after first swap + // x2 x3 x1 after second swap + if (this.stack.length < 3) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + x1 = this.stack[this.stack.length - 3]; + x2 = this.stack[this.stack.length - 2]; + var x3 = this.stack[this.stack.length - 1]; + this.stack[this.stack.length - 3] = x2; + this.stack[this.stack.length - 2] = x3; + this.stack[this.stack.length - 1] = x1; + } + break; + + case Opcode.OP_SWAP: + { + // (x1 x2 -- x2 x1) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + x1 = this.stack[this.stack.length - 2]; + x2 = this.stack[this.stack.length - 1]; + this.stack[this.stack.length - 2] = x2; + this.stack[this.stack.length - 1] = x1; + } + break; + + case Opcode.OP_TUCK: + { + // (x1 x2 -- x2 x1 x2) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.splice(this.stack.length - 2, 0, this.stack[this.stack.length - 1]); + } + break; + + + case Opcode.OP_SIZE: + { + // (in -- in size) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + bn = new BN(this.stack[this.stack.length - 1].length); + this.stack.push(bn.toScriptNumBuffer()); + } + break; + + + // + // Bitwise logic + // + case Opcode.OP_EQUAL: + case Opcode.OP_EQUALVERIFY: + //case Opcode.OP_NOTEQUAL: // use Opcode.OP_NUMNOTEQUAL + { + // (x1 x2 - bool) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 2]; + buf2 = this.stack[this.stack.length - 1]; + var fEqual = buf1.toString('hex') === buf2.toString('hex'); + this.stack.pop(); + this.stack.pop(); + this.stack.push(fEqual ? Interpreter.true : Interpreter.false); + if (opcodenum === Opcode.OP_EQUALVERIFY) { + if (fEqual) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_EQUALVERIFY'; + return false; + } + } + } + break; + + + // + // Numeric + // + case Opcode.OP_1ADD: + case Opcode.OP_1SUB: + case Opcode.OP_NEGATE: + case Opcode.OP_ABS: + case Opcode.OP_NOT: + case Opcode.OP_0NOTEQUAL: + { + // (in -- out) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + bn = BN.fromScriptNumBuffer(buf, fRequireMinimal); + switch (opcodenum) { + case Opcode.OP_1ADD: + bn = bn.add(BN.One); + break; + case Opcode.OP_1SUB: + bn = bn.sub(BN.One); + break; + case Opcode.OP_NEGATE: + bn = bn.neg(); + break; + case Opcode.OP_ABS: + if (bn.cmp(BN.Zero) < 0) { + bn = bn.neg(); + } + break; + case Opcode.OP_NOT: + bn = new BN((bn.cmp(BN.Zero) === 0) + 0); + break; + case Opcode.OP_0NOTEQUAL: + bn = new BN((bn.cmp(BN.Zero) !== 0) + 0); + break; + //default: assert(!'invalid opcode'); break; // TODO: does this ever occur? + } + this.stack.pop(); + this.stack.push(bn.toScriptNumBuffer()); + } + break; + + case Opcode.OP_ADD: + case Opcode.OP_SUB: + case Opcode.OP_BOOLAND: + case Opcode.OP_BOOLOR: + case Opcode.OP_NUMEQUAL: + case Opcode.OP_NUMEQUALVERIFY: + case Opcode.OP_NUMNOTEQUAL: + case Opcode.OP_LESSTHAN: + case Opcode.OP_GREATERTHAN: + case Opcode.OP_LESSTHANOREQUAL: + case Opcode.OP_GREATERTHANOREQUAL: + case Opcode.OP_MIN: + case Opcode.OP_MAX: + { + // (x1 x2 -- out) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + bn1 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 2], fRequireMinimal); + bn2 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal); + bn = new BN(0); + + switch (opcodenum) { + case Opcode.OP_ADD: + bn = bn1.add(bn2); + break; + + case Opcode.OP_SUB: + bn = bn1.sub(bn2); + break; + + // case Opcode.OP_BOOLAND: bn = (bn1 != bnZero && bn2 != bnZero); break; + case Opcode.OP_BOOLAND: + bn = new BN(((bn1.cmp(BN.Zero) !== 0) && (bn2.cmp(BN.Zero) !== 0)) + 0); + break; + // case Opcode.OP_BOOLOR: bn = (bn1 != bnZero || bn2 != bnZero); break; + case Opcode.OP_BOOLOR: + bn = new BN(((bn1.cmp(BN.Zero) !== 0) || (bn2.cmp(BN.Zero) !== 0)) + 0); + break; + // case Opcode.OP_NUMEQUAL: bn = (bn1 == bn2); break; + case Opcode.OP_NUMEQUAL: + bn = new BN((bn1.cmp(bn2) === 0) + 0); + break; + // case Opcode.OP_NUMEQUALVERIFY: bn = (bn1 == bn2); break; + case Opcode.OP_NUMEQUALVERIFY: + bn = new BN((bn1.cmp(bn2) === 0) + 0); + break; + // case Opcode.OP_NUMNOTEQUAL: bn = (bn1 != bn2); break; + case Opcode.OP_NUMNOTEQUAL: + bn = new BN((bn1.cmp(bn2) !== 0) + 0); + break; + // case Opcode.OP_LESSTHAN: bn = (bn1 < bn2); break; + case Opcode.OP_LESSTHAN: + bn = new BN((bn1.cmp(bn2) < 0) + 0); + break; + // case Opcode.OP_GREATERTHAN: bn = (bn1 > bn2); break; + case Opcode.OP_GREATERTHAN: + bn = new BN((bn1.cmp(bn2) > 0) + 0); + break; + // case Opcode.OP_LESSTHANOREQUAL: bn = (bn1 <= bn2); break; + case Opcode.OP_LESSTHANOREQUAL: + bn = new BN((bn1.cmp(bn2) <= 0) + 0); + break; + // case Opcode.OP_GREATERTHANOREQUAL: bn = (bn1 >= bn2); break; + case Opcode.OP_GREATERTHANOREQUAL: + bn = new BN((bn1.cmp(bn2) >= 0) + 0); + break; + case Opcode.OP_MIN: + bn = (bn1.cmp(bn2) < 0 ? bn1 : bn2); + break; + case Opcode.OP_MAX: + bn = (bn1.cmp(bn2) > 0 ? bn1 : bn2); + break; + // default: assert(!'invalid opcode'); break; //TODO: does this ever occur? + } + this.stack.pop(); + this.stack.pop(); + this.stack.push(bn.toScriptNumBuffer()); + + if (opcodenum === Opcode.OP_NUMEQUALVERIFY) { + // if (CastToBool(stacktop(-1))) + if (Interpreter.castToBool(this.stack[this.stack.length - 1])) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_NUMEQUALVERIFY'; + return false; + } + } + } + break; + + case Opcode.OP_WITHIN: + { + // (x min max -- out) + if (this.stack.length < 3) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + bn1 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 3], fRequireMinimal); + bn2 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 2], fRequireMinimal); + var bn3 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal); + //bool fValue = (bn2 <= bn1 && bn1 < bn3); + fValue = (bn2.cmp(bn1) <= 0) && (bn1.cmp(bn3) < 0); + this.stack.pop(); + this.stack.pop(); + this.stack.pop(); + this.stack.push(fValue ? Interpreter.true : Interpreter.false); + } + break; + + + // + // Crypto + // + case Opcode.OP_RIPEMD160: + case Opcode.OP_SHA1: + case Opcode.OP_SHA256: + case Opcode.OP_HASH160: + case Opcode.OP_HASH256: + { + // (in -- hash) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + //valtype vchHash((opcode == Opcode.OP_RIPEMD160 || + // opcode == Opcode.OP_SHA1 || opcode == Opcode.OP_HASH160) ? 20 : 32); + var bufHash; + if (opcodenum === Opcode.OP_RIPEMD160) { + bufHash = Hash.ripemd160(buf); + } else if (opcodenum === Opcode.OP_SHA1) { + bufHash = Hash.sha1(buf); + } else if (opcodenum === Opcode.OP_SHA256) { + bufHash = Hash.sha256(buf); + } else if (opcodenum === Opcode.OP_HASH160) { + bufHash = Hash.sha256ripemd160(buf); + } else if (opcodenum === Opcode.OP_HASH256) { + bufHash = Hash.sha256sha256(buf); + } + this.stack.pop(); + this.stack.push(bufHash); + } + break; + + case Opcode.OP_CODESEPARATOR: + { + // Hash starts after the code separator + this.pbegincodehash = this.pc; + } + break; + + case Opcode.OP_CHECKSIG: + case Opcode.OP_CHECKSIGVERIFY: + { + // (sig pubkey -- bool) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + + bufSig = this.stack[this.stack.length - 2]; + bufPubkey = this.stack[this.stack.length - 1]; + if (!this.checkSignatureEncoding(bufSig) || !this.checkPubkeyEncoding(bufPubkey)) { + return false; + } + + // Subset of script starting at the most recent codeseparator + // CScript scriptCode(pbegincodehash, pend); + subscript = new Script().set({ + chunks: this.script.chunks.slice(this.pbegincodehash) + }); + + // Drop the signature, since there's no way for a signature to sign itself + var tmpScript = new Script().add(bufSig); + subscript.findAndDelete(tmpScript); + + try { + sig = Signature.fromTxFormat(bufSig); + pubkey = PublicKey.fromBuffer(bufPubkey, false); + fSuccess = this.tx.verifySignature(sig, pubkey, this.nin, subscript, this.sigversion, this.satoshis); + } catch (e) { + //invalid sig or pubkey + fSuccess = false; + } + + if (!fSuccess && (this.flags & Interpreter.SCRIPT_VERIFY_NULLFAIL) && + bufSig.length) { + this.errstr = 'SCRIPT_ERR_NULLFAIL'; + return false; + } + + this.stack.pop(); + this.stack.pop(); + + // stack.push_back(fSuccess ? vchTrue : vchFalse); + this.stack.push(fSuccess ? Interpreter.true : Interpreter.false); + if (opcodenum === Opcode.OP_CHECKSIGVERIFY) { + if (fSuccess) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_CHECKSIGVERIFY'; + return false; + } + } + } + break; + + case Opcode.OP_CHECKMULTISIG: + case Opcode.OP_CHECKMULTISIGVERIFY: + { + // ([sig ...] num_of_signatures [pubkey ...] num_of_pubkeys -- bool) + + var i = 1; + if (this.stack.length < i) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + + var nKeysCount = BN.fromScriptNumBuffer(this.stack[this.stack.length - i], fRequireMinimal).toNumber(); + if (nKeysCount < 0 || nKeysCount > 20) { + this.errstr = 'SCRIPT_ERR_PUBKEY_COUNT'; + return false; + } + this.nOpCount += nKeysCount; + if (this.nOpCount > 201) { + this.errstr = 'SCRIPT_ERR_OP_COUNT'; + return false; + } + // int ikey = ++i; + var ikey = ++i; + i += nKeysCount; + + // ikey2 is the position of last non-signature item in + // the stack. Top stack item = 1. With + // SCRIPT_VERIFY_NULLFAIL, this is used for cleanup if + // operation fails. + var ikey2 = nKeysCount + 2; + + if (this.stack.length < i) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + + var nSigsCount = BN.fromScriptNumBuffer(this.stack[this.stack.length - i], fRequireMinimal).toNumber(); + if (nSigsCount < 0 || nSigsCount > nKeysCount) { + this.errstr = 'SCRIPT_ERR_SIG_COUNT'; + return false; + } + // int isig = ++i; + var isig = ++i; + i += nSigsCount; + if (this.stack.length < i) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + + // Subset of script starting at the most recent codeseparator + subscript = new Script().set({ + chunks: this.script.chunks.slice(this.pbegincodehash) + }); + + // Drop the signatures, since there's no way for a signature to sign itself + for (var k = 0; k < nSigsCount; k++) { + bufSig = this.stack[this.stack.length - isig - k]; + subscript.findAndDelete(new Script().add(bufSig)); + } + + fSuccess = true; + while (fSuccess && nSigsCount > 0) { + // valtype& vchSig = stacktop(-isig); + bufSig = this.stack[this.stack.length - isig]; + // valtype& vchPubKey = stacktop(-ikey); + bufPubkey = this.stack[this.stack.length - ikey]; + + if (!this.checkSignatureEncoding(bufSig) || !this.checkPubkeyEncoding(bufPubkey)) { + return false; + } + + var fOk; + try { + sig = Signature.fromTxFormat(bufSig); + pubkey = PublicKey.fromBuffer(bufPubkey, false); + fOk = this.tx.verifySignature(sig, pubkey, this.nin, subscript, this.sigversion, this.satoshis); + } catch (e) { + //invalid sig or pubkey + fOk = false; + } + + if (fOk) { + isig++; + nSigsCount--; + } + ikey++; + nKeysCount--; + + // If there are more signatures left than keys left, + // then too many signatures have failed + if (nSigsCount > nKeysCount) { + fSuccess = false; + } + } + + + // Clean up stack of actual arguments + while (i-- > 1) { + if (!fSuccess && (this.flags & Interpreter.SCRIPT_VERIFY_NULLFAIL) && + !ikey2 && this.stack[this.stack.length - 1].length) { + + this.errstr = 'SCRIPT_ERR_NULLFAIL'; + return false; + } + + if (ikey2 > 0) { + ikey2--; + } + + this.stack.pop(); + } + + // A bug causes CHECKMULTISIG to consume one extra argument + // whose contents were not checked in any way. + // + // Unfortunately this is a potential source of mutability, + // so optionally verify it is exactly equal to zero prior + // to removing it from the stack. + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + if ((this.flags & Interpreter.SCRIPT_VERIFY_NULLDUMMY) && this.stack[this.stack.length - 1].length) { + this.errstr = 'SCRIPT_ERR_SIG_NULLDUMMY'; + return false; + } + this.stack.pop(); + + this.stack.push(fSuccess ? Interpreter.true : Interpreter.false); + + if (opcodenum === Opcode.OP_CHECKMULTISIGVERIFY) { + if (fSuccess) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_CHECKMULTISIGVERIFY'; + return false; + } + } + } + break; + + default: + this.errstr = 'SCRIPT_ERR_BAD_OPCODE'; + return false; + } + } + + return true; +}; + + +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":271,"../crypto/hash":273,"../crypto/signature":276,"../opcode":287,"../publickey":289,"../transaction":293,"./script":292,"buffer":146,"lodash":311}],292:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var Address = require('../address'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var Opcode = require('../opcode'); +var PublicKey = require('../publickey'); +var Signature = require('../crypto/signature'); +var Networks = require('../networks'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); +var errors = require('../errors'); +var buffer = require('buffer'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); + +/** + * A bitcoin transaction script. Each transaction's inputs and outputs + * has a script that is evaluated to validate it's spending. + * + * See https://en.bitcoin.it/wiki/Script + * + * @constructor + * @param {Object|string|Buffer=} from optional data to populate script + */ +var Script = function Script(from) { + if (!(this instanceof Script)) { + return new Script(from); + } + this.chunks = []; + + if (BufferUtil.isBuffer(from)) { + return Script.fromBuffer(from); + } else if (from instanceof Address) { + return Script.fromAddress(from); + } else if (from instanceof Script) { + return Script.fromBuffer(from.toBuffer()); + } else if (_.isString(from)) { + return Script.fromString(from); + } else if (_.isObject(from) && _.isArray(from.chunks)) { + this.set(from); + } +}; + +Script.prototype.set = function(obj) { + $.checkArgument(_.isObject(obj)); + $.checkArgument(_.isArray(obj.chunks)); + this.chunks = obj.chunks; + return this; +}; + +Script.fromBuffer = function(buffer) { + var script = new Script(); + script.chunks = []; + + var br = new BufferReader(buffer); + while (!br.finished()) { + try { + var opcodenum = br.readUInt8(); + + var len, buf; + if (opcodenum > 0 && opcodenum < Opcode.OP_PUSHDATA1) { + len = opcodenum; + script.chunks.push({ + buf: br.read(len), + len: len, + opcodenum: opcodenum + }); + } else if (opcodenum === Opcode.OP_PUSHDATA1) { + len = br.readUInt8(); + buf = br.read(len); + script.chunks.push({ + buf: buf, + len: len, + opcodenum: opcodenum + }); + } else if (opcodenum === Opcode.OP_PUSHDATA2) { + len = br.readUInt16LE(); + buf = br.read(len); + script.chunks.push({ + buf: buf, + len: len, + opcodenum: opcodenum + }); + } else if (opcodenum === Opcode.OP_PUSHDATA4) { + len = br.readUInt32LE(); + buf = br.read(len); + script.chunks.push({ + buf: buf, + len: len, + opcodenum: opcodenum + }); + } else { + script.chunks.push({ + opcodenum: opcodenum + }); + } + } catch (e) { + if (e instanceof RangeError) { + throw new errors.Script.InvalidBuffer(buffer.toString('hex')); + } + throw e; + } + } + + return script; +}; + +Script.prototype.toBuffer = function() { + var bw = new BufferWriter(); + + for (var i = 0; i < this.chunks.length; i++) { + var chunk = this.chunks[i]; + var opcodenum = chunk.opcodenum; + bw.writeUInt8(chunk.opcodenum); + if (chunk.buf) { + if (opcodenum < Opcode.OP_PUSHDATA1) { + bw.write(chunk.buf); + } else if (opcodenum === Opcode.OP_PUSHDATA1) { + bw.writeUInt8(chunk.len); + bw.write(chunk.buf); + } else if (opcodenum === Opcode.OP_PUSHDATA2) { + bw.writeUInt16LE(chunk.len); + bw.write(chunk.buf); + } else if (opcodenum === Opcode.OP_PUSHDATA4) { + bw.writeUInt32LE(chunk.len); + bw.write(chunk.buf); + } + } + } + + return bw.concat(); +}; + +Script.fromASM = function(str) { + var script = new Script(); + script.chunks = []; + + var tokens = str.split(' '); + var i = 0; + while (i < tokens.length) { + var token = tokens[i]; + var opcode = Opcode(token); + var opcodenum = opcode.toNumber(); + + if (_.isUndefined(opcodenum)) { + var buf = Buffer.from(tokens[i], 'hex'); + script.chunks.push({ + buf: buf, + len: buf.length, + opcodenum: buf.length + }); + i = i + 1; + } else if (opcodenum === Opcode.OP_PUSHDATA1 || + opcodenum === Opcode.OP_PUSHDATA2 || + opcodenum === Opcode.OP_PUSHDATA4) { + script.chunks.push({ + buf: Buffer.from(tokens[i + 2], 'hex'), + len: parseInt(tokens[i + 1]), + opcodenum: opcodenum + }); + i = i + 3; + } else { + script.chunks.push({ + opcodenum: opcodenum + }); + i = i + 1; + } + } + return script; +}; + +Script.fromHex = function(str) { + return new Script(new buffer.Buffer(str, 'hex')); +}; + +Script.fromString = function(str) { + if (JSUtil.isHexa(str) || str.length === 0) { + return new Script(new buffer.Buffer(str, 'hex')); + } + var script = new Script(); + script.chunks = []; + + var tokens = str.split(' '); + var i = 0; + while (i < tokens.length) { + var token = tokens[i]; + var opcode = Opcode(token); + var opcodenum = opcode.toNumber(); + + if (_.isUndefined(opcodenum)) { + opcodenum = parseInt(token); + if (opcodenum > 0 && opcodenum < Opcode.OP_PUSHDATA1) { + script.chunks.push({ + buf: Buffer.from(tokens[i + 1].slice(2), 'hex'), + len: opcodenum, + opcodenum: opcodenum + }); + i = i + 2; + } else { + throw new Error('Invalid script: ' + JSON.stringify(str)); + } + } else if (opcodenum === Opcode.OP_PUSHDATA1 || + opcodenum === Opcode.OP_PUSHDATA2 || + opcodenum === Opcode.OP_PUSHDATA4) { + if (tokens[i + 2].slice(0, 2) !== '0x') { + throw new Error('Pushdata data must start with 0x'); + } + script.chunks.push({ + buf: Buffer.from(tokens[i + 2].slice(2), 'hex'), + len: parseInt(tokens[i + 1]), + opcodenum: opcodenum + }); + i = i + 3; + } else { + script.chunks.push({ + opcodenum: opcodenum + }); + i = i + 1; + } + } + return script; +}; + +Script.prototype._chunkToString = function(chunk, type) { + var opcodenum = chunk.opcodenum; + var asm = (type === 'asm'); + var str = ''; + if (!chunk.buf) { + // no data chunk + if (typeof Opcode.reverseMap[opcodenum] !== 'undefined') { + if (asm) { + // A few cases where the opcode name differs from reverseMap + // aside from 1 to 16 data pushes. + if (opcodenum === 0) { + // OP_0 -> 0 + str = str + ' 0'; + } else if(opcodenum === 79) { + // OP_1NEGATE -> 1 + str = str + ' -1'; + } else { + str = str + ' ' + Opcode(opcodenum).toString(); + } + } else { + str = str + ' ' + Opcode(opcodenum).toString(); + } + } else { + var numstr = opcodenum.toString(16); + if (numstr.length % 2 !== 0) { + numstr = '0' + numstr; + } + if (asm) { + str = str + ' ' + numstr; + } else { + str = str + ' ' + '0x' + numstr; + } + } + } else { + // data chunk + if (!asm && opcodenum === Opcode.OP_PUSHDATA1 || + opcodenum === Opcode.OP_PUSHDATA2 || + opcodenum === Opcode.OP_PUSHDATA4) { + str = str + ' ' + Opcode(opcodenum).toString(); + } + if (chunk.len > 0) { + if (asm) { + str = str + ' ' + chunk.buf.toString('hex'); + } else { + str = str + ' ' + chunk.len + ' ' + '0x' + chunk.buf.toString('hex'); + } + } + } + return str; +}; + +Script.prototype.toASM = function() { + var str = ''; + for (var i = 0; i < this.chunks.length; i++) { + var chunk = this.chunks[i]; + str += this._chunkToString(chunk, 'asm'); + } + + return str.substr(1); +}; + +Script.prototype.toString = function() { + var str = ''; + for (var i = 0; i < this.chunks.length; i++) { + var chunk = this.chunks[i]; + str += this._chunkToString(chunk); + } + + return str.substr(1); +}; + +Script.prototype.toHex = function() { + return this.toBuffer().toString('hex'); +}; + +Script.prototype.inspect = function() { + return ''; +}; + +// script classification methods + +/** + * @returns {boolean} if this is a pay to pubkey hash output script + */ +Script.prototype.isPublicKeyHashOut = function() { + return !!(this.chunks.length === 5 && + this.chunks[0].opcodenum === Opcode.OP_DUP && + this.chunks[1].opcodenum === Opcode.OP_HASH160 && + this.chunks[2].buf && + this.chunks[2].buf.length === 20 && + this.chunks[3].opcodenum === Opcode.OP_EQUALVERIFY && + this.chunks[4].opcodenum === Opcode.OP_CHECKSIG); +}; + +/** + * @returns {boolean} if this is a pay to public key hash input script + */ +Script.prototype.isPublicKeyHashIn = function() { + if (this.chunks.length === 2) { + var signatureBuf = this.chunks[0].buf; + var pubkeyBuf = this.chunks[1].buf; + if (signatureBuf && + signatureBuf.length && + signatureBuf[0] === 0x30 && + pubkeyBuf && + pubkeyBuf.length + ) { + var version = pubkeyBuf[0]; + if ((version === 0x04 || + version === 0x06 || + version === 0x07) && pubkeyBuf.length === 65) { + return true; + } else if ((version === 0x03 || version === 0x02) && pubkeyBuf.length === 33) { + return true; + } + } + } + return false; +}; + +Script.prototype.getPublicKey = function() { + $.checkState(this.isPublicKeyOut(), 'Can\'t retrieve PublicKey from a non-PK output'); + return this.chunks[0].buf; +}; + +Script.prototype.getPublicKeyHash = function() { + $.checkState(this.isPublicKeyHashOut(), 'Can\'t retrieve PublicKeyHash from a non-PKH output'); + return this.chunks[2].buf; +}; + +/** + * @returns {boolean} if this is a public key output script + */ +Script.prototype.isPublicKeyOut = function() { + if (this.chunks.length === 2 && + this.chunks[0].buf && + this.chunks[0].buf.length && + this.chunks[1].opcodenum === Opcode.OP_CHECKSIG) { + var pubkeyBuf = this.chunks[0].buf; + var version = pubkeyBuf[0]; + var isVersion = false; + if ((version === 0x04 || + version === 0x06 || + version === 0x07) && pubkeyBuf.length === 65) { + isVersion = true; + } else if ((version === 0x03 || version === 0x02) && pubkeyBuf.length === 33) { + isVersion = true; + } + if (isVersion) { + return PublicKey.isValid(pubkeyBuf); + } + } + return false; +}; + +/** + * @returns {boolean} if this is a pay to public key input script + */ +Script.prototype.isPublicKeyIn = function() { + if (this.chunks.length === 1) { + var signatureBuf = this.chunks[0].buf; + if (signatureBuf && + signatureBuf.length && + signatureBuf[0] === 0x30) { + return true; + } + } + return false; +}; + +/** + * @returns {boolean} if this is a p2sh output script + */ +Script.prototype.isScriptHashOut = function() { + var buf = this.toBuffer(); + return (buf.length === 23 && + buf[0] === Opcode.OP_HASH160 && + buf[1] === 0x14 && + buf[buf.length - 1] === Opcode.OP_EQUAL); +}; + +/** + * @returns {boolean} if this is a p2wsh output script + */ +Script.prototype.isWitnessScriptHashOut = function() { + var buf = this.toBuffer(); + return (buf.length === 34 && buf[0] === 0 && buf[1] === 32); +}; + +/** + * @returns {boolean} if this is a p2wpkh output script + */ +Script.prototype.isWitnessPublicKeyHashOut = function() { + var buf = this.toBuffer(); + return (buf.length === 22 && buf[0] === 0 && buf[1] === 20); +}; + +/** + * @param {Object=} values - The return values + * @param {Number} values.version - Set with the witness version + * @param {Buffer} values.program - Set with the witness program + * @returns {boolean} if this is a p2wpkh output script + */ +Script.prototype.isWitnessProgram = function(values) { + if (!values) { + values = {}; + } + var buf = this.toBuffer(); + if (buf.length < 4 || buf.length > 42) { + return false; + } + if (buf[0] !== Opcode.OP_0 && !(buf[0] >= Opcode.OP_1 && buf[0] <= Opcode.OP_16)) { + return false; + } + + if (buf.length === buf[1] + 2) { + values.version = buf[0]; + values.program = buf.slice(2, buf.length); + return true; + } + + return false; +}; + +/** + * @returns {boolean} if this is a p2sh input script + * Note that these are frequently indistinguishable from pubkeyhashin + */ +Script.prototype.isScriptHashIn = function() { + if (this.chunks.length <= 1) { + return false; + } + var redeemChunk = this.chunks[this.chunks.length - 1]; + var redeemBuf = redeemChunk.buf; + if (!redeemBuf) { + return false; + } + + var redeemScript; + try { + redeemScript = Script.fromBuffer(redeemBuf); + } catch (e) { + if (e instanceof errors.Script.InvalidBuffer) { + return false; + } + throw e; + } + var type = redeemScript.classify(); + return type !== Script.types.UNKNOWN; +}; + +/** + * @returns {boolean} if this is a mutlsig output script + */ +Script.prototype.isMultisigOut = function() { + return (this.chunks.length > 3 && + Opcode.isSmallIntOp(this.chunks[0].opcodenum) && + this.chunks.slice(1, this.chunks.length - 2).every(function(obj) { + return obj.buf && BufferUtil.isBuffer(obj.buf); + }) && + Opcode.isSmallIntOp(this.chunks[this.chunks.length - 2].opcodenum) && + this.chunks[this.chunks.length - 1].opcodenum === Opcode.OP_CHECKMULTISIG); +}; + + +/** + * @returns {boolean} if this is a multisig input script + */ +Script.prototype.isMultisigIn = function() { + return this.chunks.length >= 2 && + this.chunks[0].opcodenum === 0 && + this.chunks.slice(1, this.chunks.length).every(function(obj) { + return obj.buf && + BufferUtil.isBuffer(obj.buf) && + Signature.isTxDER(obj.buf); + }); +}; + +/** + * @returns {boolean} true if this is a valid standard OP_RETURN output + */ +Script.prototype.isDataOut = function() { + return this.chunks.length >= 1 && + this.chunks[0].opcodenum === Opcode.OP_RETURN && + (this.chunks.length === 1 || + (this.chunks.length === 2 && + this.chunks[1].buf && + this.chunks[1].buf.length <= Script.OP_RETURN_STANDARD_SIZE && + this.chunks[1].length === this.chunks.len)); +}; + +/** + * Retrieve the associated data for this script. + * In the case of a pay to public key hash or P2SH, return the hash. + * In the case of a standard OP_RETURN, return the data + * @returns {Buffer} + */ +Script.prototype.getData = function() { + if (this.isDataOut() || this.isScriptHashOut()) { + if (_.isUndefined(this.chunks[1])) { + return Buffer.alloc(0); + } else { + return Buffer.from(this.chunks[1].buf); + } + } + if (this.isPublicKeyHashOut()) { + return Buffer.from(this.chunks[2].buf); + } + throw new Error('Unrecognized script type to get data from'); +}; + +/** + * @returns {boolean} if the script is only composed of data pushing + * opcodes or small int opcodes (OP_0, OP_1, ..., OP_16) + */ +Script.prototype.isPushOnly = function() { + return _.every(this.chunks, function(chunk) { + return chunk.opcodenum <= Opcode.OP_16; + }); +}; + + +Script.types = {}; +Script.types.UNKNOWN = 'Unknown'; +Script.types.PUBKEY_OUT = 'Pay to public key'; +Script.types.PUBKEY_IN = 'Spend from public key'; +Script.types.PUBKEYHASH_OUT = 'Pay to public key hash'; +Script.types.PUBKEYHASH_IN = 'Spend from public key hash'; +Script.types.SCRIPTHASH_OUT = 'Pay to script hash'; +Script.types.SCRIPTHASH_IN = 'Spend from script hash'; +Script.types.MULTISIG_OUT = 'Pay to multisig'; +Script.types.MULTISIG_IN = 'Spend from multisig'; +Script.types.DATA_OUT = 'Data push'; + +Script.OP_RETURN_STANDARD_SIZE = 80; + +/** + * @returns {object} The Script type if it is a known form, + * or Script.UNKNOWN if it isn't + */ +Script.prototype.classify = function() { + if (this._isInput) { + return this.classifyInput(); + } else if (this._isOutput) { + return this.classifyOutput(); + } else { + var outputType = this.classifyOutput(); + return outputType != Script.types.UNKNOWN ? outputType : this.classifyInput(); + } +}; + +Script.outputIdentifiers = {}; +Script.outputIdentifiers.PUBKEY_OUT = Script.prototype.isPublicKeyOut; +Script.outputIdentifiers.PUBKEYHASH_OUT = Script.prototype.isPublicKeyHashOut; +Script.outputIdentifiers.MULTISIG_OUT = Script.prototype.isMultisigOut; +Script.outputIdentifiers.SCRIPTHASH_OUT = Script.prototype.isScriptHashOut; +Script.outputIdentifiers.DATA_OUT = Script.prototype.isDataOut; + +/** + * @returns {object} The Script type if it is a known form, + * or Script.UNKNOWN if it isn't + */ +Script.prototype.classifyOutput = function() { + for (var type in Script.outputIdentifiers) { + if (Script.outputIdentifiers[type].bind(this)()) { + return Script.types[type]; + } + } + return Script.types.UNKNOWN; +}; + +Script.inputIdentifiers = {}; +Script.inputIdentifiers.PUBKEY_IN = Script.prototype.isPublicKeyIn; +Script.inputIdentifiers.PUBKEYHASH_IN = Script.prototype.isPublicKeyHashIn; +Script.inputIdentifiers.MULTISIG_IN = Script.prototype.isMultisigIn; +Script.inputIdentifiers.SCRIPTHASH_IN = Script.prototype.isScriptHashIn; + +/** + * @returns {object} The Script type if it is a known form, + * or Script.UNKNOWN if it isn't + */ +Script.prototype.classifyInput = function() { + for (var type in Script.inputIdentifiers) { + if (Script.inputIdentifiers[type].bind(this)()) { + return Script.types[type]; + } + } + return Script.types.UNKNOWN; +}; + + +/** + * @returns {boolean} if script is one of the known types + */ +Script.prototype.isStandard = function() { + // TODO: Add BIP62 compliance + return this.classify() !== Script.types.UNKNOWN; +}; + + +// Script construction methods + +/** + * Adds a script element at the start of the script. + * @param {*} obj a string, number, Opcode, Buffer, or object to add + * @returns {Script} this script instance + */ +Script.prototype.prepend = function(obj) { + this._addByType(obj, true); + return this; +}; + +/** + * Compares a script with another script + */ +Script.prototype.equals = function(script) { + $.checkState(script instanceof Script, 'Must provide another script'); + if (this.chunks.length !== script.chunks.length) { + return false; + } + var i; + for (i = 0; i < this.chunks.length; i++) { + if (BufferUtil.isBuffer(this.chunks[i].buf) && !BufferUtil.isBuffer(script.chunks[i].buf)) { + return false; + } + if (BufferUtil.isBuffer(this.chunks[i].buf) && !BufferUtil.equals(this.chunks[i].buf, script.chunks[i].buf)) { + return false; + } else if (this.chunks[i].opcodenum !== script.chunks[i].opcodenum) { + return false; + } + } + return true; +}; + +/** + * Adds a script element to the end of the script. + * + * @param {*} obj a string, number, Opcode, Buffer, or object to add + * @returns {Script} this script instance + * + */ +Script.prototype.add = function(obj) { + this._addByType(obj, false); + return this; +}; + +Script.prototype._addByType = function(obj, prepend) { + if (typeof obj === 'string') { + this._addOpcode(obj, prepend); + } else if (typeof obj === 'number') { + this._addOpcode(obj, prepend); + } else if (obj instanceof Opcode) { + this._addOpcode(obj, prepend); + } else if (BufferUtil.isBuffer(obj)) { + this._addBuffer(obj, prepend); + } else if (obj instanceof Script) { + this.chunks = this.chunks.concat(obj.chunks); + } else if (typeof obj === 'object') { + this._insertAtPosition(obj, prepend); + } else { + throw new Error('Invalid script chunk'); + } +}; + +Script.prototype._insertAtPosition = function(op, prepend) { + if (prepend) { + this.chunks.unshift(op); + } else { + this.chunks.push(op); + } +}; + +Script.prototype._addOpcode = function(opcode, prepend) { + var op; + if (typeof opcode === 'number') { + op = opcode; + } else if (opcode instanceof Opcode) { + op = opcode.toNumber(); + } else { + op = Opcode(opcode).toNumber(); + } + this._insertAtPosition({ + opcodenum: op + }, prepend); + return this; +}; + +Script.prototype._addBuffer = function(buf, prepend) { + var opcodenum; + var len = buf.length; + if (len >= 0 && len < Opcode.OP_PUSHDATA1) { + opcodenum = len; + } else if (len < Math.pow(2, 8)) { + opcodenum = Opcode.OP_PUSHDATA1; + } else if (len < Math.pow(2, 16)) { + opcodenum = Opcode.OP_PUSHDATA2; + } else if (len < Math.pow(2, 32)) { + opcodenum = Opcode.OP_PUSHDATA4; + } else { + throw new Error('You can\'t push that much data'); + } + this._insertAtPosition({ + buf: buf, + len: len, + opcodenum: opcodenum + }, prepend); + return this; +}; + +Script.prototype.hasCodeseparators = function() { + for (var i = 0; i < this.chunks.length; i++) { + if (this.chunks[i].opcodenum === Opcode.OP_CODESEPARATOR) { + return true; + } + } + return false; +}; + +Script.prototype.removeCodeseparators = function() { + var chunks = []; + for (var i = 0; i < this.chunks.length; i++) { + if (this.chunks[i].opcodenum !== Opcode.OP_CODESEPARATOR) { + chunks.push(this.chunks[i]); + } + } + this.chunks = chunks; + return this; +}; + +// high level script builder methods + +/** + * @returns {Script} a new Multisig output script for given public keys, + * requiring m of those public keys to spend + * @param {PublicKey[]} publicKeys - list of all public keys controlling the output + * @param {number} threshold - amount of required signatures to spend the output + * @param {Object=} opts - Several options: + * - noSorting: defaults to false, if true, don't sort the given + * public keys before creating the script + */ +Script.buildMultisigOut = function(publicKeys, threshold, opts) { + $.checkArgument(threshold <= publicKeys.length, + 'Number of required signatures must be less than or equal to the number of public keys'); + opts = opts || {}; + var script = new Script(); + script.add(Opcode.smallInt(threshold)); + publicKeys = _.map(publicKeys, PublicKey); + var sorted = publicKeys; + if (!opts.noSorting) { + sorted = _.sortBy(publicKeys, function(publicKey) { + return publicKey.toString('hex'); + }); + } + for (var i = 0; i < sorted.length; i++) { + var publicKey = sorted[i]; + script.add(publicKey.toBuffer()); + } + script.add(Opcode.smallInt(publicKeys.length)); + script.add(Opcode.OP_CHECKMULTISIG); + return script; +}; + +Script.buildWitnessMultisigOutFromScript = function(script) { + if (script instanceof Script) { + var s = new Script(); + s.add(Opcode.OP_0); + s.add(Hash.sha256(script.toBuffer())); + return s; + } else { + throw new TypeError('First argument is expected to be a p2sh script'); + } +}; + +/** + * A new Multisig input script for the given public keys, requiring m of those public keys to spend + * + * @param {PublicKey[]} pubkeys list of all public keys controlling the output + * @param {number} threshold amount of required signatures to spend the output + * @param {Array} signatures and array of signature buffers to append to the script + * @param {Object=} opts + * @param {boolean=} opts.noSorting don't sort the given public keys before creating the script (false by default) + * @param {Script=} opts.cachedMultisig don't recalculate the redeemScript + * + * @returns {Script} + */ +Script.buildMultisigIn = function(pubkeys, threshold, signatures, opts) { + $.checkArgument(_.isArray(pubkeys)); + $.checkArgument(_.isNumber(threshold)); + $.checkArgument(_.isArray(signatures)); + opts = opts || {}; + var s = new Script(); + s.add(Opcode.OP_0); + _.each(signatures, function(signature) { + $.checkArgument(BufferUtil.isBuffer(signature), 'Signatures must be an array of Buffers'); + // TODO: allow signatures to be an array of Signature objects + s.add(signature); + }); + return s; +}; + +/** + * A new P2SH Multisig input script for the given public keys, requiring m of those public keys to spend + * + * @param {PublicKey[]} pubkeys list of all public keys controlling the output + * @param {number} threshold amount of required signatures to spend the output + * @param {Array} signatures and array of signature buffers to append to the script + * @param {Object=} opts + * @param {boolean=} opts.noSorting don't sort the given public keys before creating the script (false by default) + * @param {Script=} opts.cachedMultisig don't recalculate the redeemScript + * + * @returns {Script} + */ +Script.buildP2SHMultisigIn = function(pubkeys, threshold, signatures, opts) { + $.checkArgument(_.isArray(pubkeys)); + $.checkArgument(_.isNumber(threshold)); + $.checkArgument(_.isArray(signatures)); + opts = opts || {}; + var s = new Script(); + s.add(Opcode.OP_0); + _.each(signatures, function(signature) { + $.checkArgument(BufferUtil.isBuffer(signature), 'Signatures must be an array of Buffers'); + // TODO: allow signatures to be an array of Signature objects + s.add(signature); + }); + s.add((opts.cachedMultisig || Script.buildMultisigOut(pubkeys, threshold, opts)).toBuffer()); + return s; +}; + +/** + * @returns {Script} a new pay to public key hash output for the given + * address or public key + * @param {(Address|PublicKey)} to - destination address or public key + */ +Script.buildPublicKeyHashOut = function(to) { + $.checkArgument(!_.isUndefined(to)); + $.checkArgument(to instanceof PublicKey || to instanceof Address || _.isString(to)); + if (to instanceof PublicKey) { + to = to.toAddress(); + } else if (_.isString(to)) { + to = new Address(to); + } + var s = new Script(); + s.add(Opcode.OP_DUP) + .add(Opcode.OP_HASH160) + .add(to.hashBuffer) + .add(Opcode.OP_EQUALVERIFY) + .add(Opcode.OP_CHECKSIG); + s._network = to.network; + return s; +}; + +/** + * @returns {Script} a new pay to public key output for the given + * public key + */ +Script.buildPublicKeyOut = function(pubkey) { + $.checkArgument(pubkey instanceof PublicKey); + var s = new Script(); + s.add(pubkey.toBuffer()) + .add(Opcode.OP_CHECKSIG); + return s; +}; + +/** + * @returns {Script} a new OP_RETURN script with data + * @param {(string|Buffer)} data - the data to embed in the output + * @param {(string)} encoding - the type of encoding of the string + */ +Script.buildDataOut = function(data, encoding) { + $.checkArgument(_.isUndefined(data) || _.isString(data) || BufferUtil.isBuffer(data)); + if (_.isString(data)) { + data = Buffer.from(data, encoding); + } + var s = new Script(); + s.add(Opcode.OP_RETURN); + if (!_.isUndefined(data)) { + s.add(data); + } + return s; +}; + +/** + * @param {Script|Address} script - the redeemScript for the new p2sh output. + * It can also be a p2sh address + * @returns {Script} new pay to script hash script for given script + */ +Script.buildScriptHashOut = function(script) { + $.checkArgument(script instanceof Script || + (script instanceof Address && script.isPayToScriptHash())); + var s = new Script(); + s.add(Opcode.OP_HASH160) + .add(script instanceof Address ? script.hashBuffer : Hash.sha256ripemd160(script.toBuffer())) + .add(Opcode.OP_EQUAL); + + s._network = script._network || script.network; + return s; +}; + +/** + * Builds a scriptSig (a script for an input) that signs a public key output script. + * + * @param {Signature|Buffer} signature - a Signature object, or the signature in DER canonical encoding + * @param {number=} sigtype - the type of the signature (defaults to SIGHASH_ALL) + */ +Script.buildPublicKeyIn = function(signature, sigtype) { + $.checkArgument(signature instanceof Signature || BufferUtil.isBuffer(signature)); + $.checkArgument(_.isUndefined(sigtype) || _.isNumber(sigtype)); + if (signature instanceof Signature) { + signature = signature.toBuffer(); + } + var script = new Script(); + script.add(BufferUtil.concat([ + signature, + BufferUtil.integerAsSingleByteBuffer(sigtype || Signature.SIGHASH_ALL) + ])); + return script; +}; + +/** + * Builds a scriptSig (a script for an input) that signs a public key hash + * output script. + * + * @param {Buffer|string|PublicKey} publicKey + * @param {Signature|Buffer} signature - a Signature object, or the signature in DER canonical encoding + * @param {number=} sigtype - the type of the signature (defaults to SIGHASH_ALL) + */ +Script.buildPublicKeyHashIn = function(publicKey, signature, sigtype) { + $.checkArgument(signature instanceof Signature || BufferUtil.isBuffer(signature)); + $.checkArgument(_.isUndefined(sigtype) || _.isNumber(sigtype)); + if (signature instanceof Signature) { + signature = signature.toBuffer(); + } + var script = new Script() + .add(BufferUtil.concat([ + signature, + BufferUtil.integerAsSingleByteBuffer(sigtype || Signature.SIGHASH_ALL) + ])) + .add(new PublicKey(publicKey).toBuffer()); + return script; +}; + +/** + * @returns {Script} an empty script + */ +Script.empty = function() { + return new Script(); +}; + +/** + * @returns {Script} a new pay to script hash script that pays to this script + */ +Script.prototype.toScriptHashOut = function() { + return Script.buildScriptHashOut(this); +}; + +/** + * @return {Script} an output script built from the address + */ +Script.fromAddress = function(address) { + address = Address(address); + if (address.isPayToScriptHash()) { + return Script.buildScriptHashOut(address); + } else if (address.isPayToPublicKeyHash()) { + return Script.buildPublicKeyHashOut(address); + } + throw new errors.Script.UnrecognizedAddress(address); +}; + +/** + * Will return the associated address information object + * @return {Address|boolean} + */ +Script.prototype.getAddressInfo = function(opts) { + if (this._isInput) { + return this._getInputAddressInfo(); + } else if (this._isOutput) { + return this._getOutputAddressInfo(); + } else { + var info = this._getOutputAddressInfo(); + if (!info) { + return this._getInputAddressInfo(); + } + return info; + } +}; + +/** + * Will return the associated output scriptPubKey address information object + * @return {Address|boolean} + * @private + */ +Script.prototype._getOutputAddressInfo = function() { + var info = {}; + if (this.isScriptHashOut()) { + info.hashBuffer = this.getData(); + info.type = Address.PayToScriptHash; + } else if (this.isPublicKeyHashOut()) { + info.hashBuffer = this.getData(); + info.type = Address.PayToPublicKeyHash; + } else { + return false; + } + return info; +}; + +/** + * Will return the associated input scriptSig address information object + * @return {Address|boolean} + * @private + */ +Script.prototype._getInputAddressInfo = function() { + var info = {}; + if (this.isPublicKeyHashIn()) { + // hash the publickey found in the scriptSig + info.hashBuffer = Hash.sha256ripemd160(this.chunks[1].buf); + info.type = Address.PayToPublicKeyHash; + } else if (this.isScriptHashIn()) { + // hash the redeemscript found at the end of the scriptSig + info.hashBuffer = Hash.sha256ripemd160(this.chunks[this.chunks.length - 1].buf); + info.type = Address.PayToScriptHash; + } else { + return false; + } + return info; +}; + +/** + * @param {Network=} network + * @return {Address|boolean} the associated address for this script if possible, or false + */ +Script.prototype.toAddress = function(network) { + var info = this.getAddressInfo(); + if (!info) { + return false; + } + info.network = Networks.get(network) || this._network || Networks.defaultNetwork; + return new Address(info); +}; + +/** + * Analogous to bitcoind's FindAndDelete. Find and delete equivalent chunks, + * typically used with push data chunks. Note that this will find and delete + * not just the same data, but the same data with the same push data op as + * produced by default. i.e., if a pushdata in a tx does not use the minimal + * pushdata op, then when you try to remove the data it is pushing, it will not + * be removed, because they do not use the same pushdata op. + */ +Script.prototype.findAndDelete = function(script) { + var buf = script.toBuffer(); + var hex = buf.toString('hex'); + for (var i = 0; i < this.chunks.length; i++) { + var script2 = Script({ + chunks: [this.chunks[i]] + }); + var buf2 = script2.toBuffer(); + var hex2 = buf2.toString('hex'); + if (hex === hex2) { + this.chunks.splice(i, 1); + } + } + return this; +}; + +/** + * Comes from bitcoind's script interpreter CheckMinimalPush function + * @returns {boolean} if the chunk {i} is the smallest way to push that particular data. + */ +Script.prototype.checkMinimalPush = function(i) { + var chunk = this.chunks[i]; + var buf = chunk.buf; + var opcodenum = chunk.opcodenum; + if (!buf) { + return true; + } + if (buf.length === 0) { + // Could have used OP_0. + return opcodenum === Opcode.OP_0; + } else if (buf.length === 1 && buf[0] >= 1 && buf[0] <= 16) { + // Could have used OP_1 .. OP_16. + return opcodenum === Opcode.OP_1 + (buf[0] - 1); + } else if (buf.length === 1 && buf[0] === 0x81) { + // Could have used OP_1NEGATE + return opcodenum === Opcode.OP_1NEGATE; + } else if (buf.length <= 75) { + // Could have used a direct push (opcode indicating number of bytes pushed + those bytes). + return opcodenum === buf.length; + } else if (buf.length <= 255) { + // Could have used OP_PUSHDATA. + return opcodenum === Opcode.OP_PUSHDATA1; + } else if (buf.length <= 65535) { + // Could have used OP_PUSHDATA2. + return opcodenum === Opcode.OP_PUSHDATA2; + } + return true; +}; + +/** + * Comes from bitcoind's script DecodeOP_N function + * @param {number} opcode + * @returns {number} numeric value in range of 0 to 16 + */ +Script.prototype._decodeOP_N = function(opcode) { + if (opcode === Opcode.OP_0) { + return 0; + } else if (opcode >= Opcode.OP_1 && opcode <= Opcode.OP_16) { + return opcode - (Opcode.OP_1 - 1); + } else { + throw new Error('Invalid opcode: ' + JSON.stringify(opcode)); + } +}; + +/** + * Comes from bitcoind's script GetSigOpCount(boolean) function + * @param {boolean} use current (true) or pre-version-0.6 (false) logic + * @returns {number} number of signature operations required by this script + */ +Script.prototype.getSignatureOperationsCount = function(accurate) { + accurate = (_.isUndefined(accurate) ? true : accurate); + var self = this; + var n = 0; + var lastOpcode = Opcode.OP_INVALIDOPCODE; + _.each(self.chunks, function getChunk(chunk) { + var opcode = chunk.opcodenum; + if (opcode == Opcode.OP_CHECKSIG || opcode == Opcode.OP_CHECKSIGVERIFY) { + n++; + } else if (opcode == Opcode.OP_CHECKMULTISIG || opcode == Opcode.OP_CHECKMULTISIGVERIFY) { + if (accurate && lastOpcode >= Opcode.OP_1 && lastOpcode <= Opcode.OP_16) { + n += self._decodeOP_N(lastOpcode); + } else { + n += 20; + } + } + lastOpcode = opcode; + }); + return n; +}; + +module.exports = Script; + +}).call(this,require("buffer").Buffer) +},{"../address":266,"../crypto/hash":273,"../crypto/signature":276,"../encoding/bufferreader":279,"../encoding/bufferwriter":280,"../errors":282,"../networks":286,"../opcode":287,"../publickey":289,"../util/buffer":308,"../util/js":309,"../util/preconditions":310,"buffer":146,"lodash":311}],293:[function(require,module,exports){ +module.exports = require('./transaction'); + +module.exports.Input = require('./input'); +module.exports.Output = require('./output'); +module.exports.UnspentOutput = require('./unspentoutput'); +module.exports.Signature = require('./signature'); +module.exports.Sighash = require('./sighash'); +module.exports.SighashWitness = require('./sighashwitness'); + +},{"./input":294,"./output":300,"./sighash":301,"./sighashwitness":302,"./signature":303,"./transaction":304,"./unspentoutput":305}],294:[function(require,module,exports){ +module.exports = require('./input'); + +module.exports.PublicKey = require('./publickey'); +module.exports.PublicKeyHash = require('./publickeyhash'); +module.exports.MultiSig = require('./multisig.js'); +module.exports.MultiSigScriptHash = require('./multisigscripthash.js'); + +},{"./input":295,"./multisig.js":296,"./multisigscripthash.js":297,"./publickey":298,"./publickeyhash":299}],295:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); +var $ = require('../../util/preconditions'); +var errors = require('../../errors'); +var BufferWriter = require('../../encoding/bufferwriter'); +var buffer = require('buffer'); +var BufferUtil = require('../../util/buffer'); +var JSUtil = require('../../util/js'); +var Script = require('../../script'); +var Sighash = require('../sighash'); +var Output = require('../output'); + +var MAXINT = 0xffffffff; // Math.pow(2, 32) - 1; +var DEFAULT_RBF_SEQNUMBER = MAXINT - 2; +var DEFAULT_SEQNUMBER = MAXINT; +var DEFAULT_LOCKTIME_SEQNUMBER = MAXINT - 1; + +function Input(params) { + if (!(this instanceof Input)) { + return new Input(params); + } + if (params) { + return this._fromObject(params); + } +} + +Input.MAXINT = MAXINT; +Input.DEFAULT_SEQNUMBER = DEFAULT_SEQNUMBER; +Input.DEFAULT_LOCKTIME_SEQNUMBER = DEFAULT_LOCKTIME_SEQNUMBER; +Input.DEFAULT_RBF_SEQNUMBER = DEFAULT_RBF_SEQNUMBER; + +Object.defineProperty(Input.prototype, 'script', { + configurable: false, + enumerable: true, + get: function() { + if (this.isNull()) { + return null; + } + if (!this._script) { + this._script = new Script(this._scriptBuffer); + this._script._isInput = true; + } + return this._script; + } +}); + +Input.fromObject = function(obj) { + $.checkArgument(_.isObject(obj)); + var input = new Input(); + return input._fromObject(obj); +}; + +Input.prototype._fromObject = function(params) { + var prevTxId; + if (_.isString(params.prevTxId) && JSUtil.isHexa(params.prevTxId)) { + prevTxId = new buffer.Buffer(params.prevTxId, 'hex'); + } else { + prevTxId = params.prevTxId; + } + this.witnesses = []; + this.output = params.output ? + (params.output instanceof Output ? params.output : new Output(params.output)) : undefined; + this.prevTxId = prevTxId || params.txidbuf; + this.outputIndex = _.isUndefined(params.outputIndex) ? params.txoutnum : params.outputIndex; + this.sequenceNumber = _.isUndefined(params.sequenceNumber) ? + (_.isUndefined(params.seqnum) ? DEFAULT_SEQNUMBER : params.seqnum) : params.sequenceNumber; + if (_.isUndefined(params.script) && _.isUndefined(params.scriptBuffer)) { + throw new errors.Transaction.Input.MissingScript(); + } + this.setScript(params.scriptBuffer || params.script); + return this; +}; + +Input.prototype.toObject = Input.prototype.toJSON = function toObject() { + var obj = { + prevTxId: this.prevTxId.toString('hex'), + outputIndex: this.outputIndex, + sequenceNumber: this.sequenceNumber, + script: this._scriptBuffer.toString('hex'), + }; + // add human readable form if input contains valid script + if (this.script) { + obj.scriptString = this.script.toString(); + } + if (this.output) { + obj.output = this.output.toObject(); + } + return obj; +}; + +Input.fromBufferReader = function(br) { + var input = new Input(); + input.prevTxId = br.readReverse(32); + input.outputIndex = br.readUInt32LE(); + input._scriptBuffer = br.readVarLengthBuffer(); + input.sequenceNumber = br.readUInt32LE(); + // TODO: return different classes according to which input it is + // e.g: CoinbaseInput, PublicKeyHashInput, MultiSigScriptHashInput, etc. + return input; +}; + +Input.prototype.toBufferWriter = function(writer) { + if (!writer) { + writer = new BufferWriter(); + } + writer.writeReverse(this.prevTxId); + writer.writeUInt32LE(this.outputIndex); + var script = this._scriptBuffer; + writer.writeVarintNum(script.length); + writer.write(script); + writer.writeUInt32LE(this.sequenceNumber); + return writer; +}; + +Input.prototype.setScript = function(script) { + this._script = null; + if (script instanceof Script) { + this._script = script; + this._script._isInput = true; + this._scriptBuffer = script.toBuffer(); + } else if (JSUtil.isHexa(script)) { + // hex string script + this._scriptBuffer = new buffer.Buffer(script, 'hex'); + } else if (_.isString(script)) { + // human readable string script + this._script = new Script(script); + this._script._isInput = true; + this._scriptBuffer = this._script.toBuffer(); + } else if (BufferUtil.isBuffer(script)) { + // buffer script + this._scriptBuffer = new buffer.Buffer(script); + } else { + throw new TypeError('Invalid argument type: script'); + } + return this; +}; + +/** + * Retrieve signatures for the provided PrivateKey. + * + * @param {Transaction} transaction - the transaction to be signed + * @param {PrivateKey} privateKey - the private key to use when signing + * @param {number} inputIndex - the index of this input in the provided transaction + * @param {number} sigType - defaults to Signature.SIGHASH_ALL + * @param {Buffer} addressHash - if provided, don't calculate the hash of the + * public key associated with the private key provided + * @abstract + */ +Input.prototype.getSignatures = function() { + throw new errors.AbstractMethodInvoked( + 'Trying to sign unsupported output type (only P2PKH and P2SH multisig inputs are supported)' + + ' for input: ' + JSON.stringify(this) + ); +}; + +Input.prototype.getSatoshisBuffer = function() { + $.checkState(this.output instanceof Output); + $.checkState(this.output._satoshisBN); + return new BufferWriter().writeUInt64LEBN(this.output._satoshisBN).toBuffer(); +}; + + +Input.prototype.isFullySigned = function() { + throw new errors.AbstractMethodInvoked('Input#isFullySigned'); +}; + +Input.prototype.isFinal = function() { + return this.sequenceNumber !== 4294967295; +}; + +Input.prototype.addSignature = function() { + throw new errors.AbstractMethodInvoked('Input#addSignature'); +}; + +Input.prototype.clearSignatures = function() { + throw new errors.AbstractMethodInvoked('Input#clearSignatures'); +}; + +Input.prototype.hasWitnesses = function() { + if (this.witnesses && this.witnesses.length > 0) { + return true; + } + return false; +}; + +Input.prototype.getWitnesses = function() { + return this.witnesses; +}; + +Input.prototype.setWitnesses = function(witnesses) { + this.witnesses = witnesses; +}; + +Input.prototype.isValidSignature = function(transaction, signature) { + // FIXME: Refactor signature so this is not necessary + signature.signature.nhashtype = signature.sigtype; + return Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + this.output.script + ); +}; + +/** + * @returns true if this is a coinbase input (represents no input) + */ +Input.prototype.isNull = function() { + return this.prevTxId.toString('hex') === '0000000000000000000000000000000000000000000000000000000000000000' && + this.outputIndex === 0xffffffff; +}; + +Input.prototype._estimateSize = function() { + return this.toBufferWriter().toBuffer().length; +}; + +module.exports = Input; + +},{"../../encoding/bufferwriter":280,"../../errors":282,"../../script":290,"../../util/buffer":308,"../../util/js":309,"../../util/preconditions":310,"../output":300,"../sighash":301,"buffer":146,"lodash":311}],296:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); +var inherits = require('inherits'); +var Transaction = require('../transaction'); +var Input = require('./input'); +var Output = require('../output'); +var $ = require('../../util/preconditions'); + +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var Sighash = require('../sighash'); +var PublicKey = require('../../publickey'); +var BufferUtil = require('../../util/buffer'); +var TransactionSignature = require('../signature'); + +/** + * @constructor + */ +function MultiSigInput(input, pubkeys, threshold, signatures, opts) { + opts = opts || {}; + Input.apply(this, arguments); + var self = this; + pubkeys = pubkeys || input.publicKeys; + threshold = threshold || input.threshold; + signatures = signatures || input.signatures; + if (opts.noSorting) { + this.publicKeys = pubkeys + } else { + this.publicKeys = _.sortBy(pubkeys, function(publicKey) { return publicKey.toString('hex'); }); + } + $.checkState(Script.buildMultisigOut(this.publicKeys, threshold).equals(this.output.script), + 'Provided public keys don\'t match to the provided output script'); + this.publicKeyIndex = {}; + _.each(this.publicKeys, function(publicKey, index) { + self.publicKeyIndex[publicKey.toString()] = index; + }); + this.threshold = threshold; + // Empty array of signatures + this.signatures = signatures ? this._deserializeSignatures(signatures) : new Array(this.publicKeys.length); +} +inherits(MultiSigInput, Input); + +MultiSigInput.prototype.toObject = function() { + var obj = Input.prototype.toObject.apply(this, arguments); + obj.threshold = this.threshold; + obj.publicKeys = _.map(this.publicKeys, function(publicKey) { return publicKey.toString(); }); + obj.signatures = this._serializeSignatures(); + return obj; +}; + +MultiSigInput.prototype._deserializeSignatures = function(signatures) { + return _.map(signatures, function(signature) { + if (!signature) { + return undefined; + } + return new TransactionSignature(signature); + }); +}; + +MultiSigInput.prototype._serializeSignatures = function() { + return _.map(this.signatures, function(signature) { + if (!signature) { + return undefined; + } + return signature.toObject(); + }); +}; + +MultiSigInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { + $.checkState(this.output instanceof Output); + sigtype = sigtype || Signature.SIGHASH_ALL; + + var self = this; + var results = []; + _.each(this.publicKeys, function(publicKey) { + if (publicKey.toString() === privateKey.publicKey.toString()) { + results.push(new TransactionSignature({ + publicKey: privateKey.publicKey, + prevTxId: self.prevTxId, + outputIndex: self.outputIndex, + inputIndex: index, + signature: Sighash.sign(transaction, privateKey, sigtype, index, self.output.script), + sigtype: sigtype + })); + } + }); + + return results; +}; + +MultiSigInput.prototype.addSignature = function(transaction, signature) { + $.checkState(!this.isFullySigned(), 'All needed signatures have already been added'); + $.checkArgument(!_.isUndefined(this.publicKeyIndex[signature.publicKey.toString()]), + 'Signature has no matching public key'); + $.checkState(this.isValidSignature(transaction, signature)); + this.signatures[this.publicKeyIndex[signature.publicKey.toString()]] = signature; + this._updateScript(); + return this; +}; + +MultiSigInput.prototype._updateScript = function() { + this.setScript(Script.buildMultisigIn( + this.publicKeys, + this.threshold, + this._createSignatures() + )); + return this; +}; + +MultiSigInput.prototype._createSignatures = function() { + return _.map( + _.filter(this.signatures, function(signature) { return !_.isUndefined(signature); }), + function(signature) { + return BufferUtil.concat([ + signature.signature.toDER(), + BufferUtil.integerAsSingleByteBuffer(signature.sigtype) + ]); + } + ); +}; + +MultiSigInput.prototype.clearSignatures = function() { + this.signatures = new Array(this.publicKeys.length); + this._updateScript(); +}; + +MultiSigInput.prototype.isFullySigned = function() { + return this.countSignatures() === this.threshold; +}; + +MultiSigInput.prototype.countMissingSignatures = function() { + return this.threshold - this.countSignatures(); +}; + +MultiSigInput.prototype.countSignatures = function() { + return _.reduce(this.signatures, function(sum, signature) { + return sum + (!!signature); + }, 0); +}; + +MultiSigInput.prototype.publicKeysWithoutSignature = function() { + var self = this; + return _.filter(this.publicKeys, function(publicKey) { + return !(self.signatures[self.publicKeyIndex[publicKey.toString()]]); + }); +}; + +MultiSigInput.prototype.isValidSignature = function(transaction, signature) { + // FIXME: Refactor signature so this is not necessary + signature.signature.nhashtype = signature.sigtype; + return Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + this.output.script + ); +}; + +/** + * + * @param {Buffer[]} signatures + * @param {PublicKey[]} publicKeys + * @param {Transaction} transaction + * @param {Integer} inputIndex + * @param {Input} input + * @returns {TransactionSignature[]} + */ +MultiSigInput.normalizeSignatures = function(transaction, input, inputIndex, signatures, publicKeys) { + return publicKeys.map(function (pubKey) { + var signatureMatch = null; + signatures = signatures.filter(function (signatureBuffer) { + if (signatureMatch) { + return true; + } + + var signature = new TransactionSignature({ + signature: Signature.fromTxFormat(signatureBuffer), + publicKey: pubKey, + prevTxId: input.prevTxId, + outputIndex: input.outputIndex, + inputIndex: inputIndex, + sigtype: Signature.SIGHASH_ALL + }); + + signature.signature.nhashtype = signature.sigtype; + var isMatch = Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + input.output.script + ); + + if (isMatch) { + signatureMatch = signature; + return false; + } + + return true; + }); + + return signatureMatch ? signatureMatch : null; + }); +}; + +MultiSigInput.OPCODES_SIZE = 1; // 0 +MultiSigInput.SIGNATURE_SIZE = 73; // size (1) + DER (<=72) + +MultiSigInput.prototype._estimateSize = function() { + return MultiSigInput.OPCODES_SIZE + + this.threshold * MultiSigInput.SIGNATURE_SIZE; +}; + +module.exports = MultiSigInput; + +},{"../../crypto/signature":276,"../../publickey":289,"../../script":290,"../../util/buffer":308,"../../util/preconditions":310,"../output":300,"../sighash":301,"../signature":303,"../transaction":304,"./input":295,"inherits":313,"lodash":311}],297:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +/* jshint maxparams:5 */ + +var _ = require('lodash'); +var inherits = require('inherits'); +var Input = require('./input'); +var Output = require('../output'); +var $ = require('../../util/preconditions'); + +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var Sighash = require('../sighash'); +var SighashWitness = require('../sighashwitness'); +var BufferWriter = require('../../encoding/bufferwriter'); +var BufferUtil = require('../../util/buffer'); +var TransactionSignature = require('../signature'); + +/** + * @constructor + */ +function MultiSigScriptHashInput(input, pubkeys, threshold, signatures, nestedWitness, opts) { + /* jshint maxstatements:20 */ + opts = opts || {}; + Input.apply(this, arguments); + var self = this; + pubkeys = pubkeys || input.publicKeys; + threshold = threshold || input.threshold; + signatures = signatures || input.signatures; + this.nestedWitness = nestedWitness ? true : false; + if (opts.noSorting) { + this.publicKeys = pubkeys + } else { + this.publicKeys = _.sortBy(pubkeys, function(publicKey) { return publicKey.toString('hex'); }); + } + this.redeemScript = Script.buildMultisigOut(this.publicKeys, threshold); + if (this.nestedWitness) { + var nested = Script.buildWitnessMultisigOutFromScript(this.redeemScript); + $.checkState(Script.buildScriptHashOut(nested).equals(this.output.script), + 'Provided public keys don\'t hash to the provided output (nested witness)'); + var scriptSig = new Script(); + scriptSig.add(nested.toBuffer()); + this.setScript(scriptSig); + } else { + $.checkState(Script.buildScriptHashOut(this.redeemScript).equals(this.output.script), + 'Provided public keys don\'t hash to the provided output'); + } + + this.publicKeyIndex = {}; + _.each(this.publicKeys, function(publicKey, index) { + self.publicKeyIndex[publicKey.toString()] = index; + }); + this.threshold = threshold; + // Empty array of signatures + this.signatures = signatures ? this._deserializeSignatures(signatures) : new Array(this.publicKeys.length); +} +inherits(MultiSigScriptHashInput, Input); + +MultiSigScriptHashInput.prototype.toObject = function() { + var obj = Input.prototype.toObject.apply(this, arguments); + obj.threshold = this.threshold; + obj.publicKeys = _.map(this.publicKeys, function(publicKey) { return publicKey.toString(); }); + obj.signatures = this._serializeSignatures(); + return obj; +}; + +MultiSigScriptHashInput.prototype._deserializeSignatures = function(signatures) { + return _.map(signatures, function(signature) { + if (!signature) { + return undefined; + } + return new TransactionSignature(signature); + }); +}; + +MultiSigScriptHashInput.prototype._serializeSignatures = function() { + return _.map(this.signatures, function(signature) { + if (!signature) { + return undefined; + } + return signature.toObject(); + }); +}; + +MultiSigScriptHashInput.prototype.getScriptCode = function() { + var writer = new BufferWriter(); + if (!this.redeemScript.hasCodeseparators()) { + var redeemScriptBuffer = this.redeemScript.toBuffer(); + writer.writeVarintNum(redeemScriptBuffer.length); + writer.write(redeemScriptBuffer); + } else { + throw new Error('@TODO'); + } + return writer.toBuffer(); +}; + +MultiSigScriptHashInput.prototype.getSighash = function(transaction, privateKey, index, sigtype) { + var self = this; + var hash; + if (self.nestedWitness) { + var scriptCode = self.getScriptCode(); + var satoshisBuffer = self.getSatoshisBuffer(); + hash = SighashWitness.sighash(transaction, sigtype, index, scriptCode, satoshisBuffer); + } else { + hash = Sighash.sighash(transaction, sigtype, index, self.redeemScript); + } + return hash; +}; + +MultiSigScriptHashInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { + $.checkState(this.output instanceof Output); + sigtype = sigtype || Signature.SIGHASH_ALL; + + var self = this; + var results = []; + _.each(this.publicKeys, function(publicKey) { + if (publicKey.toString() === privateKey.publicKey.toString()) { + var signature; + if (self.nestedWitness) { + var scriptCode = self.getScriptCode(); + var satoshisBuffer = self.getSatoshisBuffer(); + signature = SighashWitness.sign(transaction, privateKey, sigtype, index, scriptCode, satoshisBuffer); + } else { + signature = Sighash.sign(transaction, privateKey, sigtype, index, self.redeemScript); + } + results.push(new TransactionSignature({ + publicKey: privateKey.publicKey, + prevTxId: self.prevTxId, + outputIndex: self.outputIndex, + inputIndex: index, + signature: signature, + sigtype: sigtype + })); + } + }); + return results; +}; + +MultiSigScriptHashInput.prototype.addSignature = function(transaction, signature) { + $.checkState(!this.isFullySigned(), 'All needed signatures have already been added'); + $.checkArgument(!_.isUndefined(this.publicKeyIndex[signature.publicKey.toString()]), + 'Signature has no matching public key'); + $.checkState(this.isValidSignature(transaction, signature)); + this.signatures[this.publicKeyIndex[signature.publicKey.toString()]] = signature; + this._updateScript(); + return this; +}; + +MultiSigScriptHashInput.prototype._updateScript = function() { + if (this.nestedWitness) { + var stack = [ + new Buffer(0), + ]; + var signatures = this._createSignatures(); + for (var i = 0; i < signatures.length; i++) { + stack.push(signatures[i]); + } + stack.push(this.redeemScript.toBuffer()); + this.setWitnesses(stack); + } else { + var scriptSig = Script.buildP2SHMultisigIn( + this.publicKeys, + this.threshold, + this._createSignatures(), + { cachedMultisig: this.redeemScript } + ); + this.setScript(scriptSig); + } + return this; +}; + +MultiSigScriptHashInput.prototype._createSignatures = function() { + return _.map( + _.filter(this.signatures, function(signature) { return !_.isUndefined(signature); }), + function(signature) { + return BufferUtil.concat([ + signature.signature.toDER(), + BufferUtil.integerAsSingleByteBuffer(signature.sigtype) + ]); + } + ); +}; + +MultiSigScriptHashInput.prototype.clearSignatures = function() { + this.signatures = new Array(this.publicKeys.length); + this._updateScript(); +}; + +MultiSigScriptHashInput.prototype.isFullySigned = function() { + return this.countSignatures() === this.threshold; +}; + +MultiSigScriptHashInput.prototype.countMissingSignatures = function() { + return this.threshold - this.countSignatures(); +}; + +MultiSigScriptHashInput.prototype.countSignatures = function() { + return _.reduce(this.signatures, function(sum, signature) { + return sum + (!!signature); + }, 0); +}; + +MultiSigScriptHashInput.prototype.publicKeysWithoutSignature = function() { + var self = this; + return _.filter(this.publicKeys, function(publicKey) { + return !(self.signatures[self.publicKeyIndex[publicKey.toString()]]); + }); +}; + +MultiSigScriptHashInput.prototype.isValidSignature = function(transaction, signature) { + if (this.nestedWitness) { + signature.signature.nhashtype = signature.sigtype; + var scriptCode = this.getScriptCode(); + var satoshisBuffer = this.getSatoshisBuffer(); + return SighashWitness.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + scriptCode, + satoshisBuffer + ); + } else { + // FIXME: Refactor signature so this is not necessary + signature.signature.nhashtype = signature.sigtype; + return Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + this.redeemScript + ); + } +}; + +MultiSigScriptHashInput.OPCODES_SIZE = 7; // serialized size (<=3) + 0 .. N .. M OP_CHECKMULTISIG +MultiSigScriptHashInput.SIGNATURE_SIZE = 74; // size (1) + DER (<=72) + sighash (1) +MultiSigScriptHashInput.PUBKEY_SIZE = 34; // size (1) + DER (<=33) + +MultiSigScriptHashInput.prototype._estimateSize = function() { + return MultiSigScriptHashInput.OPCODES_SIZE + + this.threshold * MultiSigScriptHashInput.SIGNATURE_SIZE + + this.publicKeys.length * MultiSigScriptHashInput.PUBKEY_SIZE; +}; + +module.exports = MultiSigScriptHashInput; + +}).call(this,require("buffer").Buffer) +},{"../../crypto/signature":276,"../../encoding/bufferwriter":280,"../../script":290,"../../util/buffer":308,"../../util/preconditions":310,"../output":300,"../sighash":301,"../sighashwitness":302,"../signature":303,"./input":295,"buffer":146,"inherits":313,"lodash":311}],298:[function(require,module,exports){ +'use strict'; + +var inherits = require('inherits'); + +var $ = require('../../util/preconditions'); +var BufferUtil = require('../../util/buffer'); + +var Input = require('./input'); +var Output = require('../output'); +var Sighash = require('../sighash'); +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var TransactionSignature = require('../signature'); + +/** + * Represents a special kind of input of PayToPublicKey kind. + * @constructor + */ +function PublicKeyInput() { + Input.apply(this, arguments); +} +inherits(PublicKeyInput, Input); + +/** + * @param {Transaction} transaction - the transaction to be signed + * @param {PrivateKey} privateKey - the private key with which to sign the transaction + * @param {number} index - the index of the input in the transaction input vector + * @param {number=} sigtype - the type of signature, defaults to Signature.SIGHASH_ALL + * @return {Array} of objects that can be + */ +PublicKeyInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { + $.checkState(this.output instanceof Output); + sigtype = sigtype || Signature.SIGHASH_ALL; + var publicKey = privateKey.toPublicKey(); + if (publicKey.toString() === this.output.script.getPublicKey().toString('hex')) { + return [new TransactionSignature({ + publicKey: publicKey, + prevTxId: this.prevTxId, + outputIndex: this.outputIndex, + inputIndex: index, + signature: Sighash.sign(transaction, privateKey, sigtype, index, this.output.script), + sigtype: sigtype + })]; + } + return []; +}; + +/** + * Add the provided signature + * + * @param {Object} signature + * @param {PublicKey} signature.publicKey + * @param {Signature} signature.signature + * @param {number=} signature.sigtype + * @return {PublicKeyInput} this, for chaining + */ +PublicKeyInput.prototype.addSignature = function(transaction, signature) { + $.checkState(this.isValidSignature(transaction, signature), 'Signature is invalid'); + this.setScript(Script.buildPublicKeyIn( + signature.signature.toDER(), + signature.sigtype + )); + return this; +}; + +/** + * Clear the input's signature + * @return {PublicKeyHashInput} this, for chaining + */ +PublicKeyInput.prototype.clearSignatures = function() { + this.setScript(Script.empty()); + return this; +}; + +/** + * Query whether the input is signed + * @return {boolean} + */ +PublicKeyInput.prototype.isFullySigned = function() { + return this.script.isPublicKeyIn(); +}; + +PublicKeyInput.SCRIPT_MAX_SIZE = 73; // sigsize (1 + 72) + +PublicKeyInput.prototype._estimateSize = function() { + return PublicKeyInput.SCRIPT_MAX_SIZE; +}; + +module.exports = PublicKeyInput; + +},{"../../crypto/signature":276,"../../script":290,"../../util/buffer":308,"../../util/preconditions":310,"../output":300,"../sighash":301,"../signature":303,"./input":295,"inherits":313}],299:[function(require,module,exports){ +'use strict'; + +var inherits = require('inherits'); + +var $ = require('../../util/preconditions'); +var BufferUtil = require('../../util/buffer'); + +var Hash = require('../../crypto/hash'); +var Input = require('./input'); +var Output = require('../output'); +var Sighash = require('../sighash'); +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var TransactionSignature = require('../signature'); + +/** + * Represents a special kind of input of PayToPublicKeyHash kind. + * @constructor + */ +function PublicKeyHashInput() { + Input.apply(this, arguments); +} +inherits(PublicKeyHashInput, Input); + +/* jshint maxparams: 5 */ +/** + * @param {Transaction} transaction - the transaction to be signed + * @param {PrivateKey} privateKey - the private key with which to sign the transaction + * @param {number} index - the index of the input in the transaction input vector + * @param {number=} sigtype - the type of signature, defaults to Signature.SIGHASH_ALL + * @param {Buffer=} hashData - the precalculated hash of the public key associated with the privateKey provided + * @return {Array} of objects that can be + */ +PublicKeyHashInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype, hashData) { + $.checkState(this.output instanceof Output); + hashData = hashData || Hash.sha256ripemd160(privateKey.publicKey.toBuffer()); + sigtype = sigtype || Signature.SIGHASH_ALL; + + if (BufferUtil.equals(hashData, this.output.script.getPublicKeyHash())) { + return [new TransactionSignature({ + publicKey: privateKey.publicKey, + prevTxId: this.prevTxId, + outputIndex: this.outputIndex, + inputIndex: index, + signature: Sighash.sign(transaction, privateKey, sigtype, index, this.output.script), + sigtype: sigtype + })]; + } + return []; +}; +/* jshint maxparams: 3 */ + +/** + * Add the provided signature + * + * @param {Object} signature + * @param {PublicKey} signature.publicKey + * @param {Signature} signature.signature + * @param {number=} signature.sigtype + * @return {PublicKeyHashInput} this, for chaining + */ +PublicKeyHashInput.prototype.addSignature = function(transaction, signature) { + $.checkState(this.isValidSignature(transaction, signature), 'Signature is invalid'); + this.setScript(Script.buildPublicKeyHashIn( + signature.publicKey, + signature.signature.toDER(), + signature.sigtype + )); + return this; +}; + +/** + * Clear the input's signature + * @return {PublicKeyHashInput} this, for chaining + */ +PublicKeyHashInput.prototype.clearSignatures = function() { + this.setScript(Script.empty()); + return this; +}; + +/** + * Query whether the input is signed + * @return {boolean} + */ +PublicKeyHashInput.prototype.isFullySigned = function() { + return this.script.isPublicKeyHashIn(); +}; + +PublicKeyHashInput.SCRIPT_MAX_SIZE = 73 + 34; // sigsize (1 + 72) + pubkey (1 + 33) + +PublicKeyHashInput.prototype._estimateSize = function() { + return PublicKeyHashInput.SCRIPT_MAX_SIZE; +}; + +module.exports = PublicKeyHashInput; + +},{"../../crypto/hash":273,"../../crypto/signature":276,"../../script":290,"../../util/buffer":308,"../../util/preconditions":310,"../output":300,"../sighash":301,"../signature":303,"./input":295,"inherits":313}],300:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); +var BN = require('../crypto/bn'); +var buffer = require('buffer'); +var bufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); +var BufferWriter = require('../encoding/bufferwriter'); +var Script = require('../script'); +var $ = require('../util/preconditions'); +var errors = require('../errors'); + +var MAX_SAFE_INTEGER = 0x1fffffffffffff; + +function Output(args) { + if (!(this instanceof Output)) { + return new Output(args); + } + if (_.isObject(args)) { + this.satoshis = args.satoshis; + if (bufferUtil.isBuffer(args.script)) { + this._scriptBuffer = args.script; + } else { + var script; + if (_.isString(args.script) && JSUtil.isHexa(args.script)) { + script = new buffer.Buffer(args.script, 'hex'); + } else { + script = args.script; + } + this.setScript(script); + } + } else { + throw new TypeError('Unrecognized argument for Output'); + } +} + +Object.defineProperty(Output.prototype, 'script', { + configurable: false, + enumerable: true, + get: function() { + if (this._script) { + return this._script; + } else { + this.setScriptFromBuffer(this._scriptBuffer); + return this._script; + } + + } +}); + +Object.defineProperty(Output.prototype, 'satoshis', { + configurable: false, + enumerable: true, + get: function() { + return this._satoshis; + }, + set: function(num) { + if (num instanceof BN) { + this._satoshisBN = num; + this._satoshis = num.toNumber(); + } else if (_.isString(num)) { + this._satoshis = parseInt(num); + this._satoshisBN = BN.fromNumber(this._satoshis); + } else { + $.checkArgument( + JSUtil.isNaturalNumber(num), + 'Output satoshis is not a natural number' + ); + this._satoshisBN = BN.fromNumber(num); + this._satoshis = num; + } + $.checkState( + JSUtil.isNaturalNumber(this._satoshis), + 'Output satoshis is not a natural number' + ); + } +}); + +Output.prototype.invalidSatoshis = function() { + if (this._satoshis > MAX_SAFE_INTEGER) { + return 'transaction txout satoshis greater than max safe integer'; + } + if (this._satoshis !== this._satoshisBN.toNumber()) { + return 'transaction txout satoshis has corrupted value'; + } + if (this._satoshis < 0) { + return 'transaction txout negative'; + } + return false; +}; + +Output.prototype.toObject = Output.prototype.toJSON = function toObject() { + var obj = { + satoshis: this.satoshis + }; + obj.script = this._scriptBuffer.toString('hex'); + return obj; +}; + +Output.fromObject = function(data) { + return new Output(data); +}; + +Output.prototype.setScriptFromBuffer = function(buffer) { + this._scriptBuffer = buffer; + try { + this._script = Script.fromBuffer(this._scriptBuffer); + this._script._isOutput = true; + } catch(e) { + if (e instanceof errors.Script.InvalidBuffer) { + this._script = null; + } else { + throw e; + } + } +}; + +Output.prototype.setScript = function(script) { + if (script instanceof Script) { + this._scriptBuffer = script.toBuffer(); + this._script = script; + this._script._isOutput = true; + } else if (_.isString(script)) { + this._script = Script.fromString(script); + this._scriptBuffer = this._script.toBuffer(); + this._script._isOutput = true; + } else if (bufferUtil.isBuffer(script)) { + this.setScriptFromBuffer(script); + } else { + throw new TypeError('Invalid argument type: script'); + } + return this; +}; + +Output.prototype.inspect = function() { + var scriptStr; + if (this.script) { + scriptStr = this.script.inspect(); + } else { + scriptStr = this._scriptBuffer.toString('hex'); + } + return ''; +}; + +Output.fromBufferReader = function(br) { + var obj = {}; + obj.satoshis = br.readUInt64LEBN(); + var size = br.readVarintNum(); + if (size !== 0) { + obj.script = br.read(size); + } else { + obj.script = new buffer.Buffer([]); + } + return new Output(obj); +}; + +Output.prototype.toBufferWriter = function(writer) { + if (!writer) { + writer = new BufferWriter(); + } + writer.writeUInt64LEBN(this._satoshisBN); + var script = this._scriptBuffer; + writer.writeVarintNum(script.length); + writer.write(script); + return writer; +}; + +module.exports = Output; + +},{"../crypto/bn":271,"../encoding/bufferwriter":280,"../errors":282,"../script":290,"../util/buffer":308,"../util/js":309,"../util/preconditions":310,"buffer":146,"lodash":311}],301:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var buffer = require('buffer'); + +var Signature = require('../crypto/signature'); +var Script = require('../script'); +var Output = require('./output'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var BN = require('../crypto/bn'); +var Hash = require('../crypto/hash'); +var ECDSA = require('../crypto/ecdsa'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); + +var SIGHASH_SINGLE_BUG = '0000000000000000000000000000000000000000000000000000000000000001'; +var BITS_64_ON = 'ffffffffffffffff'; + +/** + * Returns a buffer of length 32 bytes with the hash that needs to be signed + * for OP_CHECKSIG. + * + * @name Signing.sighash + * @param {Transaction} transaction the transaction to sign + * @param {number} sighashType the type of the hash + * @param {number} inputNumber the input index for the signature + * @param {Script} subscript the script that will be signed + */ +var sighash = function sighash(transaction, sighashType, inputNumber, subscript) { + var Transaction = require('./transaction'); + var Input = require('./input'); + + var i; + // Copy transaction + var txcopy = Transaction.shallowCopy(transaction); + + // Copy script + subscript = new Script(subscript); + subscript.removeCodeseparators(); + + for (i = 0; i < txcopy.inputs.length; i++) { + // Blank signatures for other inputs + txcopy.inputs[i] = new Input(txcopy.inputs[i]).setScript(Script.empty()); + } + + txcopy.inputs[inputNumber] = new Input(txcopy.inputs[inputNumber]).setScript(subscript); + + if ((sighashType & 31) === Signature.SIGHASH_NONE || + (sighashType & 31) === Signature.SIGHASH_SINGLE) { + + // clear all sequenceNumbers + for (i = 0; i < txcopy.inputs.length; i++) { + if (i !== inputNumber) { + txcopy.inputs[i].sequenceNumber = 0; + } + } + } + + if ((sighashType & 31) === Signature.SIGHASH_NONE) { + txcopy.outputs = []; + + } else if ((sighashType & 31) === Signature.SIGHASH_SINGLE) { + // The SIGHASH_SINGLE bug. + // https://bitcointalk.org/index.php?topic=260595.0 + if (inputNumber >= txcopy.outputs.length) { + return Buffer.from(SIGHASH_SINGLE_BUG, 'hex'); + } + + txcopy.outputs.length = inputNumber + 1; + + for (i = 0; i < inputNumber; i++) { + txcopy.outputs[i] = new Output({ + satoshis: BN.fromBuffer(new buffer.Buffer(BITS_64_ON, 'hex')), + script: Script.empty() + }); + } + } + + if (sighashType & Signature.SIGHASH_ANYONECANPAY) { + txcopy.inputs = [txcopy.inputs[inputNumber]]; + } + + var buf = new BufferWriter() + .write(txcopy.toBuffer()) + .writeInt32LE(sighashType) + .toBuffer(); + var ret = Hash.sha256sha256(buf); + ret = new BufferReader(ret).readReverse(); + return ret; +}; + +/** + * Create a signature + * + * @name Signing.sign + * @param {Transaction} transaction + * @param {PrivateKey} privateKey + * @param {number} sighash + * @param {number} inputIndex + * @param {Script} subscript + * @return {Signature} + */ +function sign(transaction, privateKey, sighashType, inputIndex, subscript) { + var hashbuf = sighash(transaction, sighashType, inputIndex, subscript); + var sig = ECDSA.sign(hashbuf, privateKey, 'little').set({ + nhashtype: sighashType + }); + return sig; +} + +/** + * Verify a signature + * + * @name Signing.verify + * @param {Transaction} transaction + * @param {Signature} signature + * @param {PublicKey} publicKey + * @param {number} inputIndex + * @param {Script} subscript + * @return {boolean} + */ +function verify(transaction, signature, publicKey, inputIndex, subscript) { + $.checkArgument(!_.isUndefined(transaction)); + $.checkArgument(!_.isUndefined(signature) && !_.isUndefined(signature.nhashtype)); + var hashbuf = sighash(transaction, signature.nhashtype, inputIndex, subscript); + return ECDSA.verify(hashbuf, signature, publicKey, 'little'); +} + +/** + * @namespace Signing + */ +module.exports = { + sighash: sighash, + sign: sign, + verify: verify +}; + +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":271,"../crypto/ecdsa":272,"../crypto/hash":273,"../crypto/signature":276,"../encoding/bufferreader":279,"../encoding/bufferwriter":280,"../script":290,"../util/preconditions":310,"./input":294,"./output":300,"./transaction":304,"buffer":146,"lodash":311}],302:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +/* jshint maxparams:5 */ + +var Signature = require('../crypto/signature'); +var Script = require('../script'); +var Output = require('./output'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var BN = require('../crypto/bn'); +var Hash = require('../crypto/hash'); +var ECDSA = require('../crypto/ecdsa'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); + +/** + * Returns a buffer of length 32 bytes with the hash that needs to be signed + * for witness programs as defined by: + * https://github.com/bitcoin/bips/blob/master/bip-0143.mediawiki + * + * @name Signing.sighash + * @param {Transaction} transaction the transaction to sign + * @param {number} sighashType the type of the hash + * @param {number} inputNumber the input index for the signature + * @param {Buffer} scriptCode + * @param {Buffer} satoshisBuffer + */ +var sighash = function sighash(transaction, sighashType, inputNumber, scriptCode, satoshisBuffer) { + /* jshint maxstatements: 50 */ + + var hashPrevouts; + var hashSequence; + var hashOutputs; + + if (!(sighashType & Signature.SIGHASH_ANYONECANPAY)) { + var buffers = []; + for (var n = 0; n < transaction.inputs.length; n++) { + var input = transaction.inputs[n]; + var prevTxIdBuffer = new BufferReader(input.prevTxId).readReverse(); + buffers.push(prevTxIdBuffer); + var outputIndexBuffer = new Buffer(new Array(4)); + outputIndexBuffer.writeUInt32LE(input.outputIndex, 0); + buffers.push(outputIndexBuffer); + } + hashPrevouts = Hash.sha256sha256(Buffer.concat(buffers)); + } + + if (!(sighashType & Signature.SIGHASH_ANYONECANPAY) && + (sighashType & 0x1f) !== Signature.SIGHASH_SINGLE && (sighashType & 0x1f) !== Signature.SIGHASH_NONE) { + + var sequenceBuffers = []; + for (var m = 0; m < transaction.inputs.length; m++) { + var sequenceBuffer = new Buffer(new Array(4)); + sequenceBuffer.writeUInt32LE(transaction.inputs[m].sequenceNumber, 0); + sequenceBuffers.push(sequenceBuffer); + } + hashSequence = Hash.sha256sha256(Buffer.concat(sequenceBuffers)); + } + + var outputWriter = new BufferWriter(); + if ((sighashType & 0x1f) !== Signature.SIGHASH_SINGLE && (sighashType & 0x1f) !== Signature.SIGHASH_NONE) { + for (var p = 0; p < transaction.outputs.length; p++) { + transaction.outputs[p].toBufferWriter(outputWriter); + } + hashOutputs = Hash.sha256sha256(outputWriter.toBuffer()); + } else if ((sighashType & 0x1f) === Signature.SIGHASH_SINGLE && inputNumber < transaction.outputs.length) { + transaction.outputs[inputNumber].toBufferWriter(outputWriter); + hashOutputs = Hash.sha256sha256(outputWriter.toBuffer()); + } + + // Version + var writer = new BufferWriter(); + writer.writeUInt32LE(transaction.version); + + // Input prevouts/nSequence (none/all, depending on flags) + writer.write(hashPrevouts); + writer.write(hashSequence); + + // The input being signed (replacing the scriptSig with scriptCode + amount) + // The prevout may already be contained in hashPrevout, and the nSequence + // may already be contain in hashSequence. + var outpointId = new BufferReader(transaction.inputs[inputNumber].prevTxId).readReverse(); + writer.write(outpointId); + writer.writeUInt32LE(transaction.inputs[inputNumber].outputIndex); + + writer.write(scriptCode); + + writer.write(satoshisBuffer); + + writer.writeUInt32LE(transaction.inputs[inputNumber].sequenceNumber); + + // Outputs (none/one/all, depending on flags) + writer.write(hashOutputs); + + // Locktime + writer.writeUInt32LE(transaction.nLockTime); + + // Sighash type + writer.writeInt32LE(sighashType); + + return Hash.sha256sha256(writer.toBuffer()); + +}; + +/** + * Create a signature + * + * @name Signing.sign + * @param {Transaction} transaction + * @param {PrivateKey} privateKey + * @param {number} sighash + * @param {number} inputIndex + * @param {Script} subscript + * @return {Signature} + */ +function sign(transaction, privateKey, sighashType, inputIndex, scriptCode, satoshisBuffer) { + var hashbuf = sighash(transaction, sighashType, inputIndex, scriptCode, satoshisBuffer); + var sig = ECDSA.sign(hashbuf, privateKey).set({ + nhashtype: sighashType + }); + return sig; +} + +/** + * Verify a signature + * + * @name Signing.verify + * @param {Transaction} transaction + * @param {Signature} signature + * @param {PublicKey} publicKey + * @param {number} inputIndex + * @param {Script} subscript + * @return {boolean} + */ +function verify(transaction, signature, publicKey, inputIndex, scriptCode, satoshisBuffer) { + $.checkArgument(!_.isUndefined(transaction)); + $.checkArgument(!_.isUndefined(signature) && !_.isUndefined(signature.nhashtype)); + var hashbuf = sighash(transaction, signature.nhashtype, inputIndex, scriptCode, satoshisBuffer); + return ECDSA.verify(hashbuf, signature, publicKey); +} + +/** + * @namespace Signing + */ +module.exports = { + sighash: sighash, + sign: sign, + verify: verify +}; + +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":271,"../crypto/ecdsa":272,"../crypto/hash":273,"../crypto/signature":276,"../encoding/bufferreader":279,"../encoding/bufferwriter":280,"../script":290,"../util/preconditions":310,"./output":300,"buffer":146,"lodash":311}],303:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var inherits = require('inherits'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); + +var PublicKey = require('../publickey'); +var errors = require('../errors'); +var Signature = require('../crypto/signature'); + +/** + * @desc + * Wrapper around Signature with fields related to signing a transaction specifically + * + * @param {Object|string|TransactionSignature} arg + * @constructor + */ +function TransactionSignature(arg) { + if (!(this instanceof TransactionSignature)) { + return new TransactionSignature(arg); + } + if (arg instanceof TransactionSignature) { + return arg; + } + if (_.isObject(arg)) { + return this._fromObject(arg); + } + throw new errors.InvalidArgument('TransactionSignatures must be instantiated from an object'); +} +inherits(TransactionSignature, Signature); + +TransactionSignature.prototype._fromObject = function(arg) { + this._checkObjectArgs(arg); + this.publicKey = new PublicKey(arg.publicKey); + this.prevTxId = BufferUtil.isBuffer(arg.prevTxId) ? arg.prevTxId : Buffer.from(arg.prevTxId, 'hex'); + this.outputIndex = arg.outputIndex; + this.inputIndex = arg.inputIndex; + this.signature = (arg.signature instanceof Signature) ? arg.signature : + BufferUtil.isBuffer(arg.signature) ? Signature.fromBuffer(arg.signature) : + Signature.fromString(arg.signature); + this.sigtype = arg.sigtype; + return this; +}; + +TransactionSignature.prototype._checkObjectArgs = function(arg) { + $.checkArgument(PublicKey(arg.publicKey), 'publicKey'); + $.checkArgument(!_.isUndefined(arg.inputIndex), 'inputIndex'); + $.checkArgument(!_.isUndefined(arg.outputIndex), 'outputIndex'); + $.checkState(_.isNumber(arg.inputIndex), 'inputIndex must be a number'); + $.checkState(_.isNumber(arg.outputIndex), 'outputIndex must be a number'); + $.checkArgument(arg.signature, 'signature'); + $.checkArgument(arg.prevTxId, 'prevTxId'); + $.checkState(arg.signature instanceof Signature || + BufferUtil.isBuffer(arg.signature) || + JSUtil.isHexa(arg.signature), 'signature must be a buffer or hexa value'); + $.checkState(BufferUtil.isBuffer(arg.prevTxId) || + JSUtil.isHexa(arg.prevTxId), 'prevTxId must be a buffer or hexa value'); + $.checkArgument(arg.sigtype, 'sigtype'); + $.checkState(_.isNumber(arg.sigtype), 'sigtype must be a number'); +}; + +/** + * Serializes a transaction to a plain JS object + * @return {Object} + */ +TransactionSignature.prototype.toObject = TransactionSignature.prototype.toJSON = function toObject() { + return { + publicKey: this.publicKey.toString(), + prevTxId: this.prevTxId.toString('hex'), + outputIndex: this.outputIndex, + inputIndex: this.inputIndex, + signature: this.signature.toString(), + sigtype: this.sigtype + }; +}; + +/** + * Builds a TransactionSignature from an object + * @param {Object} object + * @return {TransactionSignature} + */ +TransactionSignature.fromObject = function(object) { + $.checkArgument(object); + return new TransactionSignature(object); +}; + +module.exports = TransactionSignature; + +}).call(this,require("buffer").Buffer) +},{"../crypto/signature":276,"../errors":282,"../publickey":289,"../util/buffer":308,"../util/js":309,"../util/preconditions":310,"buffer":146,"inherits":313,"lodash":311}],304:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var buffer = require('buffer'); +var compare = Buffer.compare || require('buffer-compare'); + +var errors = require('../errors'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var Signature = require('../crypto/signature'); +var Sighash = require('./sighash'); +var SighashWitness = require('./sighashwitness'); + +var Address = require('../address'); +var UnspentOutput = require('./unspentoutput'); +var Input = require('./input'); +var PublicKeyHashInput = Input.PublicKeyHash; +var PublicKeyInput = Input.PublicKey; +var MultiSigScriptHashInput = Input.MultiSigScriptHash; +var MultiSigInput = Input.MultiSig; +var Output = require('./output'); +var Script = require('../script'); +var PrivateKey = require('../privatekey'); +var BN = require('../crypto/bn'); + +/** + * Represents a transaction, a set of inputs and outputs to change ownership of tokens + * + * @param {*} serialized + * @constructor + */ +function Transaction(serialized) { + if (!(this instanceof Transaction)) { + return new Transaction(serialized); + } + this.inputs = []; + this.outputs = []; + this._inputAmount = undefined; + this._outputAmount = undefined; + + if (serialized) { + if (serialized instanceof Transaction) { + return Transaction.shallowCopy(serialized); + } else if (JSUtil.isHexa(serialized)) { + this.fromString(serialized); + } else if (BufferUtil.isBuffer(serialized)) { + this.fromBuffer(serialized); + } else if (_.isObject(serialized)) { + this.fromObject(serialized); + } else { + throw new errors.InvalidArgument('Must provide an object or string to deserialize a transaction'); + } + } else { + this._newTransaction(); + } +} +var CURRENT_VERSION = 1; +var DEFAULT_NLOCKTIME = 0; +var MAX_BLOCK_SIZE = 1000000; + +// Minimum amount for an output for it not to be considered a dust output +Transaction.DUST_AMOUNT = 546; + +// Margin of error to allow fees in the vecinity of the expected value but doesn't allow a big difference +Transaction.FEE_SECURITY_MARGIN = 150; + +// max amount of satoshis in circulation +Transaction.MAX_MONEY = 21000000 * 1e8; + +// nlocktime limit to be considered block height rather than a timestamp +Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT = 5e8; + +// Max value for an unsigned 32 bit value +Transaction.NLOCKTIME_MAX_VALUE = 4294967295; + +// Value used for fee estimation (satoshis per kilobyte) +Transaction.FEE_PER_KB = 100000; + +// Safe upper bound for change address script size in bytes +Transaction.CHANGE_OUTPUT_MAX_SIZE = 20 + 4 + 34 + 4; +Transaction.MAXIMUM_EXTRA_SIZE = 4 + 9 + 9 + 4; + +/* Constructors and Serialization */ + +/** + * Create a 'shallow' copy of the transaction, by serializing and deserializing + * it dropping any additional information that inputs and outputs may have hold + * + * @param {Transaction} transaction + * @return {Transaction} + */ +Transaction.shallowCopy = function(transaction) { + var copy = new Transaction(transaction.toBuffer()); + return copy; +}; + +var hashProperty = { + configurable: false, + enumerable: true, + get: function() { + this._hash = new BufferReader(this._getHash()).readReverse().toString('hex'); + return this._hash; + } +}; + +var witnessHashProperty = { + configurable: false, + enumerable: true, + get: function() { + return new BufferReader(this._getWitnessHash()).readReverse().toString('hex'); + } +}; + +Object.defineProperty(Transaction.prototype, 'witnessHash', witnessHashProperty); +Object.defineProperty(Transaction.prototype, 'hash', hashProperty); +Object.defineProperty(Transaction.prototype, 'id', hashProperty); + +var ioProperty = { + configurable: false, + enumerable: true, + get: function() { + return this._getInputAmount(); + } +}; +Object.defineProperty(Transaction.prototype, 'inputAmount', ioProperty); +ioProperty.get = function() { + return this._getOutputAmount(); +}; +Object.defineProperty(Transaction.prototype, 'outputAmount', ioProperty); + +/** + * Retrieve the little endian hash of the transaction (used for serialization) + * @return {Buffer} + */ +Transaction.prototype._getHash = function() { + return Hash.sha256sha256(this.toBuffer(true)); +}; + +/** + * Retrieve the little endian hash of the transaction including witness data + * @return {Buffer} + */ +Transaction.prototype._getWitnessHash = function() { + return Hash.sha256sha256(this.toBuffer(false)); +}; + +/** + * Retrieve a hexa string that can be used with bitcoind's CLI interface + * (decoderawtransaction, sendrawtransaction) + * + * @param {Object|boolean=} unsafe if true, skip all tests. if it's an object, + * it's expected to contain a set of flags to skip certain tests: + * * `disableAll`: disable all checks + * * `disableSmallFees`: disable checking for fees that are too small + * * `disableLargeFees`: disable checking for fees that are too large + * * `disableIsFullySigned`: disable checking if all inputs are fully signed + * * `disableDustOutputs`: disable checking if there are no outputs that are dust amounts + * * `disableMoreOutputThanInput`: disable checking if the transaction spends more bitcoins than the sum of the input amounts + * @return {string} + */ +Transaction.prototype.serialize = function(unsafe) { + if (true === unsafe || unsafe && unsafe.disableAll) { + return this.uncheckedSerialize(); + } else { + return this.checkedSerialize(unsafe); + } +}; + +Transaction.prototype.uncheckedSerialize = Transaction.prototype.toString = function() { + return this.toBuffer().toString('hex'); +}; + +/** + * Retrieve a hexa string that can be used with bitcoind's CLI interface + * (decoderawtransaction, sendrawtransaction) + * + * @param {Object} opts allows to skip certain tests. {@see Transaction#serialize} + * @return {string} + */ +Transaction.prototype.checkedSerialize = function(opts) { + var serializationError = this.getSerializationError(opts); + if (serializationError) { + serializationError.message += ' - For more information please see: ' + + 'https://bitcore.io/api/lib/transaction#serialization-checks'; + throw serializationError; + } + return this.uncheckedSerialize(); +}; + +Transaction.prototype.invalidSatoshis = function() { + var invalid = false; + for (var i = 0; i < this.outputs.length; i++) { + if (this.outputs[i].invalidSatoshis()) { + invalid = true; + } + } + return invalid; +}; + +/** + * Retrieve a possible error that could appear when trying to serialize and + * broadcast this transaction. + * + * @param {Object} opts allows to skip certain tests. {@see Transaction#serialize} + * @return {bitcore.Error} + */ +Transaction.prototype.getSerializationError = function(opts) { + opts = opts || {}; + + if (this.invalidSatoshis()) { + return new errors.Transaction.InvalidSatoshis(); + } + + var unspent = this._getUnspentValue(); + var unspentError; + if (unspent < 0) { + if (!opts.disableMoreOutputThanInput) { + unspentError = new errors.Transaction.InvalidOutputAmountSum(); + } + } else { + unspentError = this._hasFeeError(opts, unspent); + } + + return unspentError || + this._hasDustOutputs(opts) || + this._isMissingSignatures(opts); +}; + +Transaction.prototype._hasFeeError = function(opts, unspent) { + + if (!_.isUndefined(this._fee) && this._fee !== unspent) { + return new errors.Transaction.FeeError.Different( + 'Unspent value is ' + unspent + ' but specified fee is ' + this._fee + ); + } + + if (!opts.disableLargeFees) { + var maximumFee = Math.floor(Transaction.FEE_SECURITY_MARGIN * this._estimateFee()); + if (unspent > maximumFee) { + if (this._missingChange()) { + return new errors.Transaction.ChangeAddressMissing( + 'Fee is too large and no change address was provided' + ); + } + return new errors.Transaction.FeeError.TooLarge( + 'expected less than ' + maximumFee + ' but got ' + unspent + ); + } + } + + if (!opts.disableSmallFees) { + var minimumFee = Math.ceil(this._estimateFee() / Transaction.FEE_SECURITY_MARGIN); + if (unspent < minimumFee) { + return new errors.Transaction.FeeError.TooSmall( + 'expected more than ' + minimumFee + ' but got ' + unspent + ); + } + } +}; + +Transaction.prototype._missingChange = function() { + return !this._changeScript; +}; + +Transaction.prototype._hasDustOutputs = function(opts) { + if (opts.disableDustOutputs) { + return; + } + var index, output; + for (index in this.outputs) { + output = this.outputs[index]; + if (output.satoshis < Transaction.DUST_AMOUNT && !output.script.isDataOut()) { + return new errors.Transaction.DustOutputs(); + } + } +}; + +Transaction.prototype._isMissingSignatures = function(opts) { + if (opts.disableIsFullySigned) { + return; + } + if (!this.isFullySigned()) { + return new errors.Transaction.MissingSignatures(); + } +}; + +Transaction.prototype.inspect = function() { + return ''; +}; + +Transaction.prototype.toBuffer = function(noWitness) { + var writer = new BufferWriter(); + return this.toBufferWriter(writer, noWitness).toBuffer(); +}; + +Transaction.prototype.hasWitnesses = function() { + for (var i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].hasWitnesses()) { + return true; + } + } + return false; +}; + +Transaction.prototype.toBufferWriter = function(writer, noWitness) { + writer.writeInt32LE(this.version); + + var hasWitnesses = this.hasWitnesses(); + + if (hasWitnesses && !noWitness) { + writer.write(new Buffer('0001', 'hex')); + } + + writer.writeVarintNum(this.inputs.length); + + _.each(this.inputs, function(input) { + input.toBufferWriter(writer); + }); + + writer.writeVarintNum(this.outputs.length); + _.each(this.outputs, function(output) { + output.toBufferWriter(writer); + }); + + if (hasWitnesses && !noWitness) { + _.each(this.inputs, function(input) { + var witnesses = input.getWitnesses(); + writer.writeVarintNum(witnesses.length); + for (var j = 0; j < witnesses.length; j++) { + writer.writeVarintNum(witnesses[j].length); + writer.write(witnesses[j]); + } + }); + } + + writer.writeUInt32LE(this.nLockTime); + return writer; +}; + +Transaction.prototype.fromBuffer = function(buffer) { + var reader = new BufferReader(buffer); + return this.fromBufferReader(reader); +}; + +Transaction.prototype.fromBufferReader = function(reader) { + $.checkArgument(!reader.finished(), 'No transaction data received'); + + this.version = reader.readInt32LE(); + var sizeTxIns = reader.readVarintNum(); + + // check for segwit + var hasWitnesses = false; + if (sizeTxIns === 0 && reader.buf[reader.pos] !== 0) { + reader.pos += 1; + hasWitnesses = true; + sizeTxIns = reader.readVarintNum(); + } + + for (var i = 0; i < sizeTxIns; i++) { + var input = Input.fromBufferReader(reader); + this.inputs.push(input); + } + + var sizeTxOuts = reader.readVarintNum(); + for (var j = 0; j < sizeTxOuts; j++) { + this.outputs.push(Output.fromBufferReader(reader)); + } + + if (hasWitnesses) { + for (var k = 0; k < sizeTxIns; k++) { + var itemCount = reader.readVarintNum(); + var witnesses = []; + for (var l = 0; l < itemCount; l++) { + var size = reader.readVarintNum(); + var item = reader.read(size); + witnesses.push(item); + } + this.inputs[k].setWitnesses(witnesses); + } + } + + this.nLockTime = reader.readUInt32LE(); + return this; +}; + + +Transaction.prototype.toObject = Transaction.prototype.toJSON = function toObject() { + var inputs = []; + this.inputs.forEach(function(input) { + inputs.push(input.toObject()); + }); + var outputs = []; + this.outputs.forEach(function(output) { + outputs.push(output.toObject()); + }); + var obj = { + hash: this.hash, + version: this.version, + inputs: inputs, + outputs: outputs, + nLockTime: this.nLockTime + }; + if (this._changeScript) { + obj.changeScript = this._changeScript.toString(); + } + if (!_.isUndefined(this._changeIndex)) { + obj.changeIndex = this._changeIndex; + } + if (!_.isUndefined(this._fee)) { + obj.fee = this._fee; + } + return obj; +}; + +Transaction.prototype.fromObject = function fromObject(arg) { + /* jshint maxstatements: 20 */ + $.checkArgument(_.isObject(arg) || arg instanceof Transaction); + var self = this; + var transaction; + if (arg instanceof Transaction) { + transaction = transaction.toObject(); + } else { + transaction = arg; + } + _.each(transaction.inputs, function(input) { + if (!input.output || !input.output.script) { + self.uncheckedAddInput(new Input(input)); + return; + } + var script = new Script(input.output.script); + var txin; + if (script.isPublicKeyHashOut()) { + txin = new Input.PublicKeyHash(input); + } else if (script.isScriptHashOut() && input.publicKeys && input.threshold) { + txin = new Input.MultiSigScriptHash( + input, input.publicKeys, input.threshold, input.signatures + ); + } else if (script.isPublicKeyOut()) { + txin = new Input.PublicKey(input); + } else { + throw new errors.Transaction.Input.UnsupportedScript(input.output.script); + } + self.addInput(txin); + }); + _.each(transaction.outputs, function(output) { + self.addOutput(new Output(output)); + }); + if (transaction.changeIndex) { + this._changeIndex = transaction.changeIndex; + } + if (transaction.changeScript) { + this._changeScript = new Script(transaction.changeScript); + } + if (transaction.fee) { + this._fee = transaction.fee; + } + this.nLockTime = transaction.nLockTime; + this.version = transaction.version; + this._checkConsistency(arg); + return this; +}; + +Transaction.prototype._checkConsistency = function(arg) { + if (!_.isUndefined(this._changeIndex)) { + $.checkState(this._changeScript, 'Change script is expected.'); + $.checkState(this.outputs[this._changeIndex], 'Change index points to undefined output.'); + $.checkState(this.outputs[this._changeIndex].script.toString() === + this._changeScript.toString(), 'Change output has an unexpected script.'); + } + if (arg && arg.hash) { + $.checkState(arg.hash === this.hash, 'Hash in object does not match transaction hash.'); + } +}; + +/** + * Sets nLockTime so that transaction is not valid until the desired date(a + * timestamp in seconds since UNIX epoch is also accepted) + * + * @param {Date | Number} time + * @return {Transaction} this + */ +Transaction.prototype.lockUntilDate = function(time) { + $.checkArgument(time); + if (_.isNumber(time) && time < Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { + throw new errors.Transaction.LockTimeTooEarly(); + } + if (_.isDate(time)) { + time = time.getTime() / 1000; + } + + for (var i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].sequenceNumber === Input.DEFAULT_SEQNUMBER){ + this.inputs[i].sequenceNumber = Input.DEFAULT_LOCKTIME_SEQNUMBER; + } + } + + this.nLockTime = time; + return this; +}; + +/** + * Sets nLockTime so that transaction is not valid until the desired block + * height. + * + * @param {Number} height + * @return {Transaction} this + */ +Transaction.prototype.lockUntilBlockHeight = function(height) { + $.checkArgument(_.isNumber(height)); + if (height >= Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { + throw new errors.Transaction.BlockHeightTooHigh(); + } + if (height < 0) { + throw new errors.Transaction.NLockTimeOutOfRange(); + } + + for (var i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].sequenceNumber === Input.DEFAULT_SEQNUMBER){ + this.inputs[i].sequenceNumber = Input.DEFAULT_LOCKTIME_SEQNUMBER; + } + } + + + this.nLockTime = height; + return this; +}; + +/** + * Returns a semantic version of the transaction's nLockTime. + * @return {Number|Date} + * If nLockTime is 0, it returns null, + * if it is < 500000000, it returns a block height (number) + * else it returns a Date object. + */ +Transaction.prototype.getLockTime = function() { + if (!this.nLockTime) { + return null; + } + if (this.nLockTime < Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { + return this.nLockTime; + } + return new Date(1000 * this.nLockTime); +}; + +Transaction.prototype.fromString = function(string) { + this.fromBuffer(buffer.Buffer.from(string, 'hex')); +}; + +Transaction.prototype._newTransaction = function() { + this.version = CURRENT_VERSION; + this.nLockTime = DEFAULT_NLOCKTIME; +}; + +/* Transaction creation interface */ + +/** + * @typedef {Object} Transaction~fromObject + * @property {string} prevTxId + * @property {number} outputIndex + * @property {(Buffer|string|Script)} script + * @property {number} satoshis + */ + +/** + * Add an input to this transaction. This is a high level interface + * to add an input, for more control, use @{link Transaction#addInput}. + * + * Can receive, as output information, the output of bitcoind's `listunspent` command, + * and a slightly fancier format recognized by bitcore: + * + * ``` + * { + * address: 'mszYqVnqKoQx4jcTdJXxwKAissE3Jbrrc1', + * txId: 'a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458', + * outputIndex: 0, + * script: Script.empty(), + * satoshis: 1020000 + * } + * ``` + * Where `address` can be either a string or a bitcore Address object. The + * same is true for `script`, which can be a string or a bitcore Script. + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @example + * ```javascript + * var transaction = new Transaction(); + * + * // From a pay to public key hash output from bitcoind's listunspent + * transaction.from({'txid': '0000...', vout: 0, amount: 0.1, scriptPubKey: 'OP_DUP ...'}); + * + * // From a pay to public key hash output + * transaction.from({'txId': '0000...', outputIndex: 0, satoshis: 1000, script: 'OP_DUP ...'}); + * + * // From a multisig P2SH output + * transaction.from({'txId': '0000...', inputIndex: 0, satoshis: 1000, script: '... OP_HASH'}, + * ['03000...', '02000...'], 2); + * ``` + * + * @param {(Array.|Transaction~fromObject)} utxo + * @param {Array=} pubkeys + * @param {number=} threshold + * @param {boolean=} nestedWitness - Indicates that the utxo is nested witness p2sh + * @param {Object=} opts - Several options: + * - noSorting: defaults to false, if true and is multisig, don't + * sort the given public keys before creating the script + */ +Transaction.prototype.from = function(utxo, pubkeys, threshold, nestedWitness, opts) { + if (_.isArray(utxo)) { + var self = this; + _.each(utxo, function(utxo) { + self.from(utxo, pubkeys, threshold); + }); + return this; + } + var exists = _.some(this.inputs, function(input) { + // TODO: Maybe prevTxId should be a string? Or defined as read only property? + return input.prevTxId.toString('hex') === utxo.txId && input.outputIndex === utxo.outputIndex; + }); + if (exists) { + return this; + } + if (pubkeys && threshold) { + this._fromMultisigUtxo(utxo, pubkeys, threshold, nestedWitness, opts); + } else { + this._fromNonP2SH(utxo); + } + return this; +}; + +Transaction.prototype._fromNonP2SH = function(utxo) { + var clazz; + utxo = new UnspentOutput(utxo); + if (utxo.script.isPublicKeyHashOut()) { + clazz = PublicKeyHashInput; + } else if (utxo.script.isPublicKeyOut()) { + clazz = PublicKeyInput; + } else { + clazz = Input; + } + this.addInput(new clazz({ + output: new Output({ + script: utxo.script, + satoshis: utxo.satoshis + }), + prevTxId: utxo.txId, + outputIndex: utxo.outputIndex, + script: Script.empty() + })); +}; + +Transaction.prototype._fromMultisigUtxo = function(utxo, pubkeys, threshold, nestedWitness, opts) { + $.checkArgument(threshold <= pubkeys.length, + 'Number of required signatures must be greater than the number of public keys'); + var clazz; + utxo = new UnspentOutput(utxo); + if (utxo.script.isMultisigOut()) { + clazz = MultiSigInput; + } else if (utxo.script.isScriptHashOut()) { + clazz = MultiSigScriptHashInput; + } else { + throw new Error("@TODO"); + } + this.addInput(new clazz({ + output: new Output({ + script: utxo.script, + satoshis: utxo.satoshis + }), + prevTxId: utxo.txId, + outputIndex: utxo.outputIndex, + script: Script.empty() + }, pubkeys, threshold, false, nestedWitness, opts)); +}; + +/** + * Add an input to this transaction. The input must be an instance of the `Input` class. + * It should have information about the Output that it's spending, but if it's not already + * set, two additional parameters, `outputScript` and `satoshis` can be provided. + * + * @param {Input} input + * @param {String|Script} outputScript + * @param {number} satoshis + * @return Transaction this, for chaining + */ +Transaction.prototype.addInput = function(input, outputScript, satoshis) { + $.checkArgumentType(input, Input, 'input'); + if (!input.output && (_.isUndefined(outputScript) || _.isUndefined(satoshis))) { + throw new errors.Transaction.NeedMoreInfo('Need information about the UTXO script and satoshis'); + } + if (!input.output && outputScript && !_.isUndefined(satoshis)) { + outputScript = outputScript instanceof Script ? outputScript : new Script(outputScript); + $.checkArgumentType(satoshis, 'number', 'satoshis'); + input.output = new Output({ + script: outputScript, + satoshis: satoshis + }); + } + return this.uncheckedAddInput(input); +}; + +/** + * Add an input to this transaction, without checking that the input has information about + * the output that it's spending. + * + * @param {Input} input + * @return Transaction this, for chaining + */ +Transaction.prototype.uncheckedAddInput = function(input) { + $.checkArgumentType(input, Input, 'input'); + this.inputs.push(input); + this._inputAmount = undefined; + this._updateChangeOutput(); + return this; +}; + +/** + * Returns true if the transaction has enough info on all inputs to be correctly validated + * + * @return {boolean} + */ +Transaction.prototype.hasAllUtxoInfo = function() { + return _.every(this.inputs.map(function(input) { + return !!input.output; + })); +}; + +/** + * Manually set the fee for this transaction. Beware that this resets all the signatures + * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not + * be reset). + * + * @param {number} amount satoshis to be sent + * @return {Transaction} this, for chaining + */ +Transaction.prototype.fee = function(amount) { + $.checkArgument(_.isNumber(amount), 'amount must be a number'); + this._fee = amount; + this._updateChangeOutput(); + return this; +}; + +/** + * Manually set the fee per KB for this transaction. Beware that this resets all the signatures + * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not + * be reset). + * + * @param {number} amount satoshis per KB to be sent + * @return {Transaction} this, for chaining + */ +Transaction.prototype.feePerKb = function(amount) { + $.checkArgument(_.isNumber(amount), 'amount must be a number'); + this._feePerKb = amount; + this._updateChangeOutput(); + return this; +}; + +/* Output management */ + +/** + * Set the change address for this transaction + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @param {Address} address An address for change to be sent to. + * @return {Transaction} this, for chaining + */ +Transaction.prototype.change = function(address) { + $.checkArgument(address, 'address is required'); + this._changeScript = Script.fromAddress(address); + this._updateChangeOutput(); + return this; +}; + + +/** + * @return {Output} change output, if it exists + */ +Transaction.prototype.getChangeOutput = function() { + if (!_.isUndefined(this._changeIndex)) { + return this.outputs[this._changeIndex]; + } + return null; +}; + +/** + * @typedef {Object} Transaction~toObject + * @property {(string|Address)} address + * @property {number} satoshis + */ + +/** + * Add an output to the transaction. + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @param {(string|Address|Array.)} address + * @param {number} amount in satoshis + * @return {Transaction} this, for chaining + */ +Transaction.prototype.to = function(address, amount) { + if (_.isArray(address)) { + var self = this; + _.each(address, function(to) { + self.to(to.address, to.satoshis); + }); + return this; + } + + $.checkArgument( + JSUtil.isNaturalNumber(amount), + 'Amount is expected to be a positive integer' + ); + this.addOutput(new Output({ + script: Script(new Address(address)), + satoshis: amount + })); + return this; +}; + +/** + * Add an OP_RETURN output to the transaction. + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @param {Buffer|string} value the data to be stored in the OP_RETURN output. + * In case of a string, the UTF-8 representation will be stored + * @return {Transaction} this, for chaining + */ +Transaction.prototype.addData = function(value) { + this.addOutput(new Output({ + script: Script.buildDataOut(value), + satoshis: 0 + })); + return this; +}; + + +/** + * Add an output to the transaction. + * + * @param {Output} output the output to add. + * @return {Transaction} this, for chaining + */ +Transaction.prototype.addOutput = function(output) { + $.checkArgumentType(output, Output, 'output'); + this._addOutput(output); + this._updateChangeOutput(); + return this; +}; + + +/** + * Remove all outputs from the transaction. + * + * @return {Transaction} this, for chaining + */ +Transaction.prototype.clearOutputs = function() { + this.outputs = []; + this._clearSignatures(); + this._outputAmount = undefined; + this._changeIndex = undefined; + this._updateChangeOutput(); + return this; +}; + + +Transaction.prototype._addOutput = function(output) { + this.outputs.push(output); + this._outputAmount = undefined; +}; + + +/** + * Calculates or gets the total output amount in satoshis + * + * @return {Number} the transaction total output amount + */ +Transaction.prototype._getOutputAmount = function() { + if (_.isUndefined(this._outputAmount)) { + var self = this; + this._outputAmount = 0; + _.each(this.outputs, function(output) { + self._outputAmount += output.satoshis; + }); + } + return this._outputAmount; +}; + + +/** + * Calculates or gets the total input amount in satoshis + * + * @return {Number} the transaction total input amount + */ +Transaction.prototype._getInputAmount = function() { + if (_.isUndefined(this._inputAmount)) { + this._inputAmount = _.sumBy(this.inputs, function(input) { + if (_.isUndefined(input.output)) { + throw new errors.Transaction.Input.MissingPreviousOutput(); + } + return input.output.satoshis; + }); + } + return this._inputAmount; +}; + +Transaction.prototype._updateChangeOutput = function() { + if (!this._changeScript) { + return; + } + this._clearSignatures(); + if (!_.isUndefined(this._changeIndex)) { + this._removeOutput(this._changeIndex); + } + var available = this._getUnspentValue(); + var fee = this.getFee(); + var changeAmount = available - fee; + if (changeAmount > 0) { + this._changeIndex = this.outputs.length; + this._addOutput(new Output({ + script: this._changeScript, + satoshis: changeAmount + })); + } else { + this._changeIndex = undefined; + } +}; +/** + * Calculates the fee of the transaction. + * + * If there's a fixed fee set, return that. + * + * If there is no change output set, the fee is the + * total value of the outputs minus inputs. Note that + * a serialized transaction only specifies the value + * of its outputs. (The value of inputs are recorded + * in the previous transaction outputs being spent.) + * This method therefore raises a "MissingPreviousOutput" + * error when called on a serialized transaction. + * + * If there's no fee set and no change address, + * estimate the fee based on size. + * + * @return {Number} fee of this transaction in satoshis + */ +Transaction.prototype.getFee = function() { + if (this.isCoinbase()) { + return 0; + } + if (!_.isUndefined(this._fee)) { + return this._fee; + } + // if no change output is set, fees should equal all the unspent amount + if (!this._changeScript) { + return this._getUnspentValue(); + } + return this._estimateFee(); +}; + +/** + * Estimates fee from serialized transaction size in bytes. + */ +Transaction.prototype._estimateFee = function() { + var estimatedSize = this._estimateSize(); + var available = this._getUnspentValue(); + return Transaction._estimateFee(estimatedSize, available, this._feePerKb); +}; + +Transaction.prototype._getUnspentValue = function() { + return this._getInputAmount() - this._getOutputAmount(); +}; + +Transaction.prototype._clearSignatures = function() { + _.each(this.inputs, function(input) { + input.clearSignatures(); + }); +}; + +Transaction._estimateFee = function(size, amountAvailable, feePerKb) { + var fee = Math.ceil(size / 1000) * (feePerKb || Transaction.FEE_PER_KB); + if (amountAvailable > fee) { + size += Transaction.CHANGE_OUTPUT_MAX_SIZE; + } + return Math.ceil(size / 1000) * (feePerKb || Transaction.FEE_PER_KB); +}; + +Transaction.prototype._estimateSize = function() { + var result = Transaction.MAXIMUM_EXTRA_SIZE; + _.each(this.inputs, function(input) { + result += input._estimateSize(); + }); + _.each(this.outputs, function(output) { + result += output.script.toBuffer().length + 9; + }); + return result; +}; + +Transaction.prototype._removeOutput = function(index) { + var output = this.outputs[index]; + this.outputs = _.without(this.outputs, output); + this._outputAmount = undefined; +}; + +Transaction.prototype.removeOutput = function(index) { + this._removeOutput(index); + this._updateChangeOutput(); +}; + +/** + * Sort a transaction's inputs and outputs according to BIP69 + * + * @see {https://github.com/bitcoin/bips/blob/master/bip-0069.mediawiki} + * @return {Transaction} this + */ +Transaction.prototype.sort = function() { + this.sortInputs(function(inputs) { + var copy = Array.prototype.concat.apply([], inputs); + copy.sort(function(first, second) { + return compare(first.prevTxId, second.prevTxId) + || first.outputIndex - second.outputIndex; + }); + return copy; + }); + this.sortOutputs(function(outputs) { + var copy = Array.prototype.concat.apply([], outputs); + copy.sort(function(first, second) { + return first.satoshis - second.satoshis + || compare(first.script.toBuffer(), second.script.toBuffer()); + }); + return copy; + }); + return this; +}; + +/** + * Randomize this transaction's outputs ordering. The shuffling algorithm is a + * version of the Fisher-Yates shuffle, provided by lodash's _.shuffle(). + * + * @return {Transaction} this + */ +Transaction.prototype.shuffleOutputs = function() { + return this.sortOutputs(_.shuffle); +}; + +/** + * Sort this transaction's outputs, according to a given sorting function that + * takes an array as argument and returns a new array, with the same elements + * but with a different order. The argument function MUST NOT modify the order + * of the original array + * + * @param {Function} sortingFunction + * @return {Transaction} this + */ +Transaction.prototype.sortOutputs = function(sortingFunction) { + var outs = sortingFunction(this.outputs); + return this._newOutputOrder(outs); +}; + +/** + * Sort this transaction's inputs, according to a given sorting function that + * takes an array as argument and returns a new array, with the same elements + * but with a different order. + * + * @param {Function} sortingFunction + * @return {Transaction} this + */ +Transaction.prototype.sortInputs = function(sortingFunction) { + this.inputs = sortingFunction(this.inputs); + this._clearSignatures(); + return this; +}; + +Transaction.prototype._newOutputOrder = function(newOutputs) { + var isInvalidSorting = (this.outputs.length !== newOutputs.length || + _.difference(this.outputs, newOutputs).length !== 0); + if (isInvalidSorting) { + throw new errors.Transaction.InvalidSorting(); + } + + if (!_.isUndefined(this._changeIndex)) { + var changeOutput = this.outputs[this._changeIndex]; + this._changeIndex = _.findIndex(newOutputs, changeOutput); + } + + this.outputs = newOutputs; + return this; +}; + +Transaction.prototype.removeInput = function(txId, outputIndex) { + var index; + if (!outputIndex && _.isNumber(txId)) { + index = txId; + } else { + index = _.findIndex(this.inputs, function(input) { + return input.prevTxId.toString('hex') === txId && input.outputIndex === outputIndex; + }); + } + if (index < 0 || index >= this.inputs.length) { + throw new errors.Transaction.InvalidIndex(index, this.inputs.length); + } + var input = this.inputs[index]; + this.inputs = _.without(this.inputs, input); + this._inputAmount = undefined; + this._updateChangeOutput(); +}; + +/* Signature handling */ + +/** + * Sign the transaction using one or more private keys. + * + * It tries to sign each input, verifying that the signature will be valid + * (matches a public key). + * + * @param {Array|String|PrivateKey} privateKey + * @param {number} sigtype + * @return {Transaction} this, for chaining + */ +Transaction.prototype.sign = function(privateKey, sigtype) { + $.checkState(this.hasAllUtxoInfo(), 'Not all utxo information is available to sign the transaction.'); + var self = this; + if (_.isArray(privateKey)) { + _.each(privateKey, function(privateKey) { + self.sign(privateKey, sigtype); + }); + return this; + } + _.each(this.getSignatures(privateKey, sigtype), function(signature) { + self.applySignature(signature); + }); + return this; +}; + +Transaction.prototype.getSignatures = function(privKey, sigtype) { + privKey = new PrivateKey(privKey); + sigtype = sigtype || Signature.SIGHASH_ALL; + var transaction = this; + var results = []; + var hashData = Hash.sha256ripemd160(privKey.publicKey.toBuffer()); + _.each(this.inputs, function forEachInput(input, index) { + _.each(input.getSignatures(transaction, privKey, index, sigtype, hashData), function(signature) { + results.push(signature); + }); + }); + return results; +}; + +/** + * Add a signature to the transaction + * + * @param {Object} signature + * @param {number} signature.inputIndex + * @param {number} signature.sigtype + * @param {PublicKey} signature.publicKey + * @param {Signature} signature.signature + * @return {Transaction} this, for chaining + */ +Transaction.prototype.applySignature = function(signature) { + this.inputs[signature.inputIndex].addSignature(this, signature); + return this; +}; + +Transaction.prototype.isFullySigned = function() { + _.each(this.inputs, function(input) { + if (input.isFullySigned === Input.prototype.isFullySigned) { + throw new errors.Transaction.UnableToVerifySignature( + 'Unrecognized script kind, or not enough information to execute script.' + + 'This usually happens when creating a transaction from a serialized transaction' + ); + } + }); + return _.every(_.map(this.inputs, function(input) { + return input.isFullySigned(); + })); +}; + +Transaction.prototype.isValidSignature = function(signature) { + var self = this; + if (this.inputs[signature.inputIndex].isValidSignature === Input.prototype.isValidSignature) { + throw new errors.Transaction.UnableToVerifySignature( + 'Unrecognized script kind, or not enough information to execute script.' + + 'This usually happens when creating a transaction from a serialized transaction' + ); + } + return this.inputs[signature.inputIndex].isValidSignature(self, signature); +}; + +/** + * @returns {bool} whether the signature is valid for this transaction input + */ +Transaction.prototype.verifySignature = function(sig, pubkey, nin, subscript, sigversion, satoshis) { + + if (_.isUndefined(sigversion)) { + sigversion = 0; + } + + if (sigversion === 1) { + var subscriptBuffer = subscript.toBuffer(); + var scriptCodeWriter = new BufferWriter(); + scriptCodeWriter.writeVarintNum(subscriptBuffer.length); + scriptCodeWriter.write(subscriptBuffer); + + var satoshisBuffer; + if (satoshis) { + $.checkState(JSUtil.isNaturalNumber(satoshis)); + satoshisBuffer = new BufferWriter().writeUInt64LEBN(new BN(satoshis)).toBuffer(); + } else { + satoshisBuffer = this.inputs[nin].getSatoshisBuffer(); + } + var verified = SighashWitness.verify( + this, + sig, + pubkey, + nin, + scriptCodeWriter.toBuffer(), + satoshisBuffer + ); + return verified; + } + + return Sighash.verify(this, sig, pubkey, nin, subscript); +}; + +/** + * Check that a transaction passes basic sanity tests. If not, return a string + * describing the error. This function contains the same logic as + * CheckTransaction in bitcoin core. + */ +Transaction.prototype.verify = function() { + // Basic checks that don't depend on any context + if (this.inputs.length === 0) { + return 'transaction txins empty'; + } + + if (this.outputs.length === 0) { + return 'transaction txouts empty'; + } + + // Check for negative or overflow output values + var valueoutbn = new BN(0); + for (var i = 0; i < this.outputs.length; i++) { + var txout = this.outputs[i]; + + if (txout.invalidSatoshis()) { + return 'transaction txout ' + i + ' satoshis is invalid'; + } + if (txout._satoshisBN.gt(new BN(Transaction.MAX_MONEY, 10))) { + return 'transaction txout ' + i + ' greater than MAX_MONEY'; + } + valueoutbn = valueoutbn.add(txout._satoshisBN); + if (valueoutbn.gt(new BN(Transaction.MAX_MONEY))) { + return 'transaction txout ' + i + ' total output greater than MAX_MONEY'; + } + } + + // Size limits + if (this.toBuffer().length > MAX_BLOCK_SIZE) { + return 'transaction over the maximum block size'; + } + + // Check for duplicate inputs + var txinmap = {}; + for (i = 0; i < this.inputs.length; i++) { + var txin = this.inputs[i]; + + var inputid = txin.prevTxId + ':' + txin.outputIndex; + if (!_.isUndefined(txinmap[inputid])) { + return 'transaction input ' + i + ' duplicate input'; + } + txinmap[inputid] = true; + } + + var isCoinbase = this.isCoinbase(); + if (isCoinbase) { + var buf = this.inputs[0]._scriptBuffer; + if (buf.length < 2 || buf.length > 100) { + return 'coinbase transaction script size invalid'; + } + } else { + for (i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].isNull()) { + return 'transaction input ' + i + ' has null input'; + } + } + } + return true; +}; + +/** + * Analogous to bitcoind's IsCoinBase function in transaction.h + */ +Transaction.prototype.isCoinbase = function() { + return (this.inputs.length === 1 && this.inputs[0].isNull()); +}; + +/** + * Determines if this transaction can be replaced in the mempool with another + * transaction that provides a sufficiently higher fee (RBF). + */ +Transaction.prototype.isRBF = function() { + for (var i = 0; i < this.inputs.length; i++) { + var input = this.inputs[i]; + if (input.sequenceNumber < Input.MAXINT - 1) { + return true; + } + } + return false; +}; + +/** + * Enable this transaction to be replaced in the mempool (RBF) if a transaction + * includes a sufficiently higher fee. It will set the sequenceNumber to + * DEFAULT_RBF_SEQNUMBER for all inputs if the sequence number does not + * already enable RBF. + */ +Transaction.prototype.enableRBF = function() { + for (var i = 0; i < this.inputs.length; i++) { + var input = this.inputs[i]; + if (input.sequenceNumber >= Input.MAXINT - 1) { + input.sequenceNumber = Input.DEFAULT_RBF_SEQNUMBER; + } + } + return this; +}; + +module.exports = Transaction; + +}).call(this,require("buffer").Buffer) +},{"../address":266,"../crypto/bn":271,"../crypto/hash":273,"../crypto/signature":276,"../encoding/bufferreader":279,"../encoding/bufferwriter":280,"../errors":282,"../privatekey":288,"../script":290,"../util/buffer":308,"../util/js":309,"../util/preconditions":310,"./input":294,"./output":300,"./sighash":301,"./sighashwitness":302,"./unspentoutput":305,"buffer":146,"buffer-compare":143,"lodash":311}],305:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var JSUtil = require('../util/js'); + +var Script = require('../script'); +var Address = require('../address'); +var Unit = require('../unit'); + +/** + * Represents an unspent output information: its script, associated amount and address, + * transaction id and output index. + * + * @constructor + * @param {object} data + * @param {string} data.txid the previous transaction id + * @param {string=} data.txId alias for `txid` + * @param {number} data.vout the index in the transaction + * @param {number=} data.outputIndex alias for `vout` + * @param {string|Script} data.scriptPubKey the script that must be resolved to release the funds + * @param {string|Script=} data.script alias for `scriptPubKey` + * @param {number} data.amount amount of bitcoins associated + * @param {number=} data.satoshis alias for `amount`, but expressed in satoshis (1 BTC = 1e8 satoshis) + * @param {string|Address=} data.address the associated address to the script, if provided + */ +function UnspentOutput(data) { + /* jshint maxcomplexity: 20 */ + /* jshint maxstatements: 20 */ + if (!(this instanceof UnspentOutput)) { + return new UnspentOutput(data); + } + $.checkArgument(_.isObject(data), 'Must provide an object from where to extract data'); + var address = data.address ? new Address(data.address) : undefined; + var txId = data.txid ? data.txid : data.txId; + if (!txId || !JSUtil.isHexaString(txId) || txId.length > 64) { + // TODO: Use the errors library + throw new Error('Invalid TXID in object', data); + } + var outputIndex = _.isUndefined(data.vout) ? data.outputIndex : data.vout; + if (!_.isNumber(outputIndex)) { + throw new Error('Invalid outputIndex, received ' + outputIndex); + } + $.checkArgument(!_.isUndefined(data.scriptPubKey) || !_.isUndefined(data.script), + 'Must provide the scriptPubKey for that output!'); + var script = new Script(data.scriptPubKey || data.script); + $.checkArgument(!_.isUndefined(data.amount) || !_.isUndefined(data.satoshis), + 'Must provide an amount for the output'); + var amount = !_.isUndefined(data.amount) ? new Unit.fromBTC(data.amount).toSatoshis() : data.satoshis; + $.checkArgument(_.isNumber(amount), 'Amount must be a number'); + JSUtil.defineImmutable(this, { + address: address, + txId: txId, + outputIndex: outputIndex, + script: script, + satoshis: amount + }); +} + +/** + * Provide an informative output when displaying this object in the console + * @returns string + */ +UnspentOutput.prototype.inspect = function() { + return ''; +}; + +/** + * String representation: just "txid:index" + * @returns string + */ +UnspentOutput.prototype.toString = function() { + return this.txId + ':' + this.outputIndex; +}; + +/** + * Deserialize an UnspentOutput from an object + * @param {object|string} data + * @return UnspentOutput + */ +UnspentOutput.fromObject = function(data) { + return new UnspentOutput(data); +}; + +/** + * Returns a plain object (no prototype or methods) with the associated info for this output + * @return {object} + */ +UnspentOutput.prototype.toObject = UnspentOutput.prototype.toJSON = function toObject() { + return { + address: this.address ? this.address.toString() : undefined, + txid: this.txId, + vout: this.outputIndex, + scriptPubKey: this.script.toBuffer().toString('hex'), + amount: Unit.fromSatoshis(this.satoshis).toBTC() + }; +}; + +module.exports = UnspentOutput; + +},{"../address":266,"../script":290,"../unit":306,"../util/js":309,"../util/preconditions":310,"lodash":311}],306:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); + +var errors = require('./errors'); +var $ = require('./util/preconditions'); + +var UNITS = { + 'BTC' : [1e8, 8], + 'mBTC' : [1e5, 5], + 'uBTC' : [1e2, 2], + 'bits' : [1e2, 2], + 'satoshis' : [1, 0] +}; + +/** + * Utility for handling and converting bitcoins units. The supported units are + * BTC, mBTC, bits (also named uBTC) and satoshis. A unit instance can be created with an + * amount and a unit code, or alternatively using static methods like {fromBTC}. + * It also allows to be created from a fiat amount and the exchange rate, or + * alternatively using the {fromFiat} static method. + * You can consult for different representation of a unit instance using it's + * {to} method, the fixed unit methods like {toSatoshis} or alternatively using + * the unit accessors. It also can be converted to a fiat amount by providing the + * corresponding BTC/fiat exchange rate. + * + * @example + * ```javascript + * var sats = Unit.fromBTC(1.3).toSatoshis(); + * var mili = Unit.fromBits(1.3).to(Unit.mBTC); + * var bits = Unit.fromFiat(1.3, 350).bits; + * var btc = new Unit(1.3, Unit.bits).BTC; + * ``` + * + * @param {Number} amount - The amount to be represented + * @param {String|Number} code - The unit of the amount or the exchange rate + * @returns {Unit} A new instance of an Unit + * @constructor + */ +function Unit(amount, code) { + if (!(this instanceof Unit)) { + return new Unit(amount, code); + } + + // convert fiat to BTC + if (_.isNumber(code)) { + if (code <= 0) { + throw new errors.Unit.InvalidRate(code); + } + amount = amount / code; + code = Unit.BTC; + } + + this._value = this._from(amount, code); + + var self = this; + var defineAccesor = function(key) { + Object.defineProperty(self, key, { + get: function() { return self.to(key); }, + enumerable: true, + }); + }; + + Object.keys(UNITS).forEach(defineAccesor); +} + +Object.keys(UNITS).forEach(function(key) { + Unit[key] = key; +}); + +/** + * Returns a Unit instance created from JSON string or object + * + * @param {String|Object} json - JSON with keys: amount and code + * @returns {Unit} A Unit instance + */ +Unit.fromObject = function fromObject(data){ + $.checkArgument(_.isObject(data), 'Argument is expected to be an object'); + return new Unit(data.amount, data.code); +}; + +/** + * Returns a Unit instance created from an amount in BTC + * + * @param {Number} amount - The amount in BTC + * @returns {Unit} A Unit instance + */ +Unit.fromBTC = function(amount) { + return new Unit(amount, Unit.BTC); +}; + +/** + * Returns a Unit instance created from an amount in mBTC + * + * @param {Number} amount - The amount in mBTC + * @returns {Unit} A Unit instance + */ +Unit.fromMillis = Unit.fromMilis = function(amount) { + return new Unit(amount, Unit.mBTC); +}; + +/** + * Returns a Unit instance created from an amount in bits + * + * @param {Number} amount - The amount in bits + * @returns {Unit} A Unit instance + */ +Unit.fromMicros = Unit.fromBits = function(amount) { + return new Unit(amount, Unit.bits); +}; + +/** + * Returns a Unit instance created from an amount in satoshis + * + * @param {Number} amount - The amount in satoshis + * @returns {Unit} A Unit instance + */ +Unit.fromSatoshis = function(amount) { + return new Unit(amount, Unit.satoshis); +}; + +/** + * Returns a Unit instance created from a fiat amount and exchange rate. + * + * @param {Number} amount - The amount in fiat + * @param {Number} rate - The exchange rate BTC/fiat + * @returns {Unit} A Unit instance + */ +Unit.fromFiat = function(amount, rate) { + return new Unit(amount, rate); +}; + +Unit.prototype._from = function(amount, code) { + if (!UNITS[code]) { + throw new errors.Unit.UnknownCode(code); + } + return parseInt((amount * UNITS[code][0]).toFixed()); +}; + +/** + * Returns the value represented in the specified unit + * + * @param {String|Number} code - The unit code or exchange rate + * @returns {Number} The converted value + */ +Unit.prototype.to = function(code) { + if (_.isNumber(code)) { + if (code <= 0) { + throw new errors.Unit.InvalidRate(code); + } + return parseFloat((this.BTC * code).toFixed(2)); + } + + if (!UNITS[code]) { + throw new errors.Unit.UnknownCode(code); + } + + var value = this._value / UNITS[code][0]; + return parseFloat(value.toFixed(UNITS[code][1])); +}; + +/** + * Returns the value represented in BTC + * + * @returns {Number} The value converted to BTC + */ +Unit.prototype.toBTC = function() { + return this.to(Unit.BTC); +}; + +/** + * Returns the value represented in mBTC + * + * @returns {Number} The value converted to mBTC + */ +Unit.prototype.toMillis = Unit.prototype.toMilis = function() { + return this.to(Unit.mBTC); +}; + +/** + * Returns the value represented in bits + * + * @returns {Number} The value converted to bits + */ +Unit.prototype.toMicros = Unit.prototype.toBits = function() { + return this.to(Unit.bits); +}; + +/** + * Returns the value represented in satoshis + * + * @returns {Number} The value converted to satoshis + */ +Unit.prototype.toSatoshis = function() { + return this.to(Unit.satoshis); +}; + +/** + * Returns the value represented in fiat + * + * @param {string} rate - The exchange rate between BTC/currency + * @returns {Number} The value converted to satoshis + */ +Unit.prototype.atRate = function(rate) { + return this.to(rate); +}; + +/** + * Returns a the string representation of the value in satoshis + * + * @returns {string} the value in satoshis + */ +Unit.prototype.toString = function() { + return this.satoshis + ' satoshis'; +}; + +/** + * Returns a plain object representation of the Unit + * + * @returns {Object} An object with the keys: amount and code + */ +Unit.prototype.toObject = Unit.prototype.toJSON = function toObject() { + return { + amount: this.BTC, + code: Unit.BTC + }; +}; + +/** + * Returns a string formatted for the console + * + * @returns {string} the value in satoshis + */ +Unit.prototype.inspect = function() { + return ''; +}; + +module.exports = Unit; + +},{"./errors":282,"./util/preconditions":310,"lodash":311}],307:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); +var URL = require('url'); + +var Address = require('./address'); +var Unit = require('./unit'); + +/** + * Bitcore URI + * + * Instantiate an URI from a bitcoin URI String or an Object. An URI instance + * can be created with a bitcoin uri string or an object. All instances of + * URI are valid, the static method isValid allows checking before instantiation. + * + * All standard parameters can be found as members of the class, the address + * is represented using an {Address} instance and the amount is represented in + * satoshis. Any other non-standard parameters can be found under the extra member. + * + * @example + * ```javascript + * + * var uri = new URI('bitcoin:12A1MyfXbW6RhdRAZEqofac5jCQQjwEPBu?amount=1.2'); + * console.log(uri.address, uri.amount); + * ``` + * + * @param {string|Object} data - A bitcoin URI string or an Object + * @param {Array.=} knownParams - Required non-standard params + * @throws {TypeError} Invalid bitcoin address + * @throws {TypeError} Invalid amount + * @throws {Error} Unknown required argument + * @returns {URI} A new valid and frozen instance of URI + * @constructor + */ +var URI = function(data, knownParams) { + if (!(this instanceof URI)) { + return new URI(data, knownParams); + } + + this.extras = {}; + this.knownParams = knownParams || []; + this.address = this.network = this.amount = this.message = null; + + if (typeof(data) === 'string') { + var params = URI.parse(data); + if (params.amount) { + params.amount = this._parseAmount(params.amount); + } + this._fromObject(params); + } else if (typeof(data) === 'object') { + this._fromObject(data); + } else { + throw new TypeError('Unrecognized data format.'); + } +}; + +/** + * Instantiate a URI from a String + * + * @param {string} str - JSON string or object of the URI + * @returns {URI} A new instance of a URI + */ +URI.fromString = function fromString(str) { + if (typeof(str) !== 'string') { + throw new TypeError('Expected a string'); + } + return new URI(str); +}; + +/** + * Instantiate a URI from an Object + * + * @param {Object} data - object of the URI + * @returns {URI} A new instance of a URI + */ +URI.fromObject = function fromObject(json) { + return new URI(json); +}; + +/** + * Check if an bitcoin URI string is valid + * + * @example + * ```javascript + * + * var valid = URI.isValid('bitcoin:12A1MyfXbW6RhdRAZEqofac5jCQQjwEPBu'); + * // true + * ``` + * + * @param {string|Object} data - A bitcoin URI string or an Object + * @param {Array.=} knownParams - Required non-standard params + * @returns {boolean} Result of uri validation + */ +URI.isValid = function(arg, knownParams) { + try { + new URI(arg, knownParams); + } catch (err) { + return false; + } + return true; +}; + +/** + * Convert a bitcoin URI string into a simple object. + * + * @param {string} uri - A bitcoin URI string + * @throws {TypeError} Invalid bitcoin URI + * @returns {Object} An object with the parsed params + */ +URI.parse = function(uri) { + var info = URL.parse(uri, true); + + if (info.protocol !== 'bitcoin:') { + throw new TypeError('Invalid bitcoin URI'); + } + + // workaround to host insensitiveness + var group = /[^:]*:\/?\/?([^?]*)/.exec(uri); + info.query.address = group && group[1] || undefined; + + return info.query; +}; + +URI.Members = ['address', 'amount', 'message', 'label', 'r']; + +/** + * Internal function to load the URI instance with an object. + * + * @param {Object} obj - Object with the information + * @throws {TypeError} Invalid bitcoin address + * @throws {TypeError} Invalid amount + * @throws {Error} Unknown required argument + */ +URI.prototype._fromObject = function(obj) { + /* jshint maxcomplexity: 10 */ + + if (!Address.isValid(obj.address)) { + throw new TypeError('Invalid bitcoin address'); + } + + this.address = new Address(obj.address); + this.network = this.address.network; + this.amount = obj.amount; + + for (var key in obj) { + if (key === 'address' || key === 'amount') { + continue; + } + + if (/^req-/.exec(key) && this.knownParams.indexOf(key) === -1) { + throw Error('Unknown required argument ' + key); + } + + var destination = URI.Members.indexOf(key) > -1 ? this : this.extras; + destination[key] = obj[key]; + } +}; + +/** + * Internal function to transform a BTC string amount into satoshis + * + * @param {string} amount - Amount BTC string + * @throws {TypeError} Invalid amount + * @returns {Object} Amount represented in satoshis + */ +URI.prototype._parseAmount = function(amount) { + amount = Number(amount); + if (isNaN(amount)) { + throw new TypeError('Invalid amount'); + } + return Unit.fromBTC(amount).toSatoshis(); +}; + +URI.prototype.toObject = URI.prototype.toJSON = function toObject() { + var json = {}; + for (var i = 0; i < URI.Members.length; i++) { + var m = URI.Members[i]; + if (this.hasOwnProperty(m) && typeof(this[m]) !== 'undefined') { + json[m] = this[m].toString(); + } + } + _.extend(json, this.extras); + return json; +}; + +/** + * Will return a the string representation of the URI + * + * @returns {string} Bitcoin URI string + */ +URI.prototype.toString = function() { + var query = {}; + if (this.amount) { + query.amount = Unit.fromSatoshis(this.amount).toBTC(); + } + if (this.message) { + query.message = this.message; + } + if (this.label) { + query.label = this.label; + } + if (this.r) { + query.r = this.r; + } + _.extend(query, this.extras); + + return URL.format({ + protocol: 'bitcoin:', + host: this.address, + query: query + }); +}; + +/** + * Will return a string formatted for the console + * + * @returns {string} Bitcoin URI + */ +URI.prototype.inspect = function() { + return ''; +}; + +module.exports = URI; + +},{"./address":266,"./unit":306,"lodash":311,"url":819}],308:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var buffer = require('buffer'); +var assert = require('assert'); + +var js = require('./js'); +var $ = require('./preconditions'); + +function equals(a, b) { + if (a.length !== b.length) { + return false; + } + var length = a.length; + for (var i = 0; i < length; i++) { + if (a[i] !== b[i]) { + return false; + } + } + return true; +} + +module.exports = { + /** + * Fill a buffer with a value. + * + * @param {Buffer} buffer + * @param {number} value + * @return {Buffer} + */ + fill: function fill(buffer, value) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + $.checkArgumentType(value, 'number', 'value'); + var length = buffer.length; + for (var i = 0; i < length; i++) { + buffer[i] = value; + } + return buffer; + }, + + /** + * Return a copy of a buffer + * + * @param {Buffer} original + * @return {Buffer} + */ + copy: function(original) { + var buffer = Buffer.alloc(original.length); + original.copy(buffer); + return buffer; + }, + + /** + * Returns true if the given argument is an instance of a buffer. Tests for + * both node's Buffer and Uint8Array + * + * @param {*} arg + * @return {boolean} + */ + isBuffer: function isBuffer(arg) { + return buffer.Buffer.isBuffer(arg) || arg instanceof Uint8Array; + }, + + /** + * Returns a zero-filled byte array + * + * @param {number} bytes + * @return {Buffer} + */ + emptyBuffer: function emptyBuffer(bytes) { + $.checkArgumentType(bytes, 'number', 'bytes'); + var result = new buffer.Buffer(bytes); + for (var i = 0; i < bytes; i++) { + result.write('\0', i); + } + return result; + }, + + /** + * Concatenates a buffer + * + * Shortcut for buffer.Buffer.concat + */ + concat: buffer.Buffer.concat, + + equals: equals, + equal: equals, + + /** + * Transforms a number from 0 to 255 into a Buffer of size 1 with that value + * + * @param {number} integer + * @return {Buffer} + */ + integerAsSingleByteBuffer: function integerAsSingleByteBuffer(integer) { + $.checkArgumentType(integer, 'number', 'integer'); + return new buffer.Buffer([integer & 0xff]); + }, + + /** + * Transform a 4-byte integer into a Buffer of length 4. + * + * @param {number} integer + * @return {Buffer} + */ + integerAsBuffer: function integerAsBuffer(integer) { + $.checkArgumentType(integer, 'number', 'integer'); + var bytes = []; + bytes.push((integer >> 24) & 0xff); + bytes.push((integer >> 16) & 0xff); + bytes.push((integer >> 8) & 0xff); + bytes.push(integer & 0xff); + return Buffer.from(bytes); + }, + + /** + * Transform the first 4 values of a Buffer into a number, in little endian encoding + * + * @param {Buffer} buffer + * @return {number} + */ + integerFromBuffer: function integerFromBuffer(buffer) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + return buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3]; + }, + + /** + * Transforms the first byte of an array into a number ranging from -128 to 127 + * @param {Buffer} buffer + * @return {number} + */ + integerFromSingleByteBuffer: function integerFromBuffer(buffer) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + return buffer[0]; + }, + + /** + * Transforms a buffer into a string with a number in hexa representation + * + * Shorthand for buffer.toString('hex') + * + * @param {Buffer} buffer + * @return {string} + */ + bufferToHex: function bufferToHex(buffer) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + return buffer.toString('hex'); + }, + + /** + * Reverse a buffer + * @param {Buffer} param + * @return {Buffer} + */ + reverse: function reverse(param) { + var ret = new buffer.Buffer(param.length); + for (var i = 0; i < param.length; i++) { + ret[i] = param[param.length - i - 1]; + } + return ret; + }, + + /** + * Transforms an hexa encoded string into a Buffer with binary values + * + * Shorthand for Buffer(string, 'hex') + * + * @param {string} string + * @return {Buffer} + */ + hexToBuffer: function hexToBuffer(string) { + assert(js.isHexa(string)); + return new buffer.Buffer(string, 'hex'); + } +}; + +module.exports.NULL_HASH = module.exports.fill(Buffer.alloc(32), 0); +module.exports.EMPTY_BUFFER = Buffer.alloc(0); + +}).call(this,require("buffer").Buffer) +},{"./js":309,"./preconditions":310,"assert":26,"buffer":146}],309:[function(require,module,exports){ +'use strict'; + +var _ = require('lodash'); + +/** + * Determines whether a string contains only hexadecimal values + * + * @name JSUtil.isHexa + * @param {string} value + * @return {boolean} true if the string is the hexa representation of a number + */ +var isHexa = function isHexa(value) { + if (!_.isString(value)) { + return false; + } + return /^[0-9a-fA-F]+$/.test(value); +}; + +/** + * @namespace JSUtil + */ +module.exports = { + /** + * Test if an argument is a valid JSON object. If it is, returns a truthy + * value (the json object decoded), so no double JSON.parse call is necessary + * + * @param {string} arg + * @return {Object|boolean} false if the argument is not a JSON string. + */ + isValidJSON: function isValidJSON(arg) { + var parsed; + if (!_.isString(arg)) { + return false; + } + try { + parsed = JSON.parse(arg); + } catch (e) { + return false; + } + if (typeof(parsed) === 'object') { + return true; + } + return false; + }, + isHexa: isHexa, + isHexaString: isHexa, + + /** + * Clone an array + */ + cloneArray: function(array) { + return [].concat(array); + }, + + /** + * Define immutable properties on a target object + * + * @param {Object} target - An object to be extended + * @param {Object} values - An object of properties + * @return {Object} The target object + */ + defineImmutable: function defineImmutable(target, values) { + Object.keys(values).forEach(function(key){ + Object.defineProperty(target, key, { + configurable: false, + enumerable: true, + value: values[key] + }); + }); + return target; + }, + /** + * Checks that a value is a natural number, a positive integer or zero. + * + * @param {*} value + * @return {Boolean} + */ + isNaturalNumber: function isNaturalNumber(value) { + return typeof value === 'number' && + isFinite(value) && + Math.floor(value) === value && + value >= 0; + } +}; + +},{"lodash":311}],310:[function(require,module,exports){ +'use strict'; + +var errors = require('../errors'); +var _ = require('lodash'); + +module.exports = { + checkState: function(condition, message) { + if (!condition) { + throw new errors.InvalidState(message); + } + }, + checkArgument: function(condition, argumentName, message, docsPath) { + if (!condition) { + throw new errors.InvalidArgument(argumentName, message, docsPath); + } + }, + checkArgumentType: function(argument, type, argumentName) { + argumentName = argumentName || '(unknown name)'; + if (_.isString(type)) { + if (type === 'Buffer') { + var buffer = require('buffer'); // './buffer' fails on cordova & RN + if (!buffer.Buffer.isBuffer(argument)) { + throw new errors.InvalidArgumentType(argument, type, argumentName); + } + } else if (typeof argument !== type) { + throw new errors.InvalidArgumentType(argument, type, argumentName); + } + } else { + if (!(argument instanceof type)) { + throw new errors.InvalidArgumentType(argument, type.name, argumentName); + } + } + } +}; + +},{"../errors":282,"buffer":146,"lodash":311}],311:[function(require,module,exports){ +(function (global){ +/** + * @license + * Lodash + * Copyright OpenJS Foundation and other contributors + * Released under MIT license + * Based on Underscore.js 1.8.3 + * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors + */ +;(function() { + + /** Used as a safe reference for `undefined` in pre-ES5 environments. */ + var undefined; + + /** Used as the semantic version number. */ + var VERSION = '4.17.12'; + + /** Used as the size to enable large array optimizations. */ + var LARGE_ARRAY_SIZE = 200; + + /** Error message constants. */ + var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.', + FUNC_ERROR_TEXT = 'Expected a function'; + + /** Used to stand-in for `undefined` hash values. */ + var HASH_UNDEFINED = '__lodash_hash_undefined__'; + + /** Used as the maximum memoize cache size. */ + var MAX_MEMOIZE_SIZE = 500; + + /** Used as the internal argument placeholder. */ + var PLACEHOLDER = '__lodash_placeholder__'; + + /** Used to compose bitmasks for cloning. */ + var CLONE_DEEP_FLAG = 1, + CLONE_FLAT_FLAG = 2, + CLONE_SYMBOLS_FLAG = 4; + + /** Used to compose bitmasks for value comparisons. */ + var COMPARE_PARTIAL_FLAG = 1, + COMPARE_UNORDERED_FLAG = 2; + + /** Used to compose bitmasks for function metadata. */ + var WRAP_BIND_FLAG = 1, + WRAP_BIND_KEY_FLAG = 2, + WRAP_CURRY_BOUND_FLAG = 4, + WRAP_CURRY_FLAG = 8, + WRAP_CURRY_RIGHT_FLAG = 16, + WRAP_PARTIAL_FLAG = 32, + WRAP_PARTIAL_RIGHT_FLAG = 64, + WRAP_ARY_FLAG = 128, + WRAP_REARG_FLAG = 256, + WRAP_FLIP_FLAG = 512; + + /** Used as default options for `_.truncate`. */ + var DEFAULT_TRUNC_LENGTH = 30, + DEFAULT_TRUNC_OMISSION = '...'; + + /** Used to detect hot functions by number of calls within a span of milliseconds. */ + var HOT_COUNT = 800, + HOT_SPAN = 16; + + /** Used to indicate the type of lazy iteratees. */ + var LAZY_FILTER_FLAG = 1, + LAZY_MAP_FLAG = 2, + LAZY_WHILE_FLAG = 3; + + /** Used as references for various `Number` constants. */ + var INFINITY = 1 / 0, + MAX_SAFE_INTEGER = 9007199254740991, + MAX_INTEGER = 1.7976931348623157e+308, + NAN = 0 / 0; + + /** Used as references for the maximum length and index of an array. */ + var MAX_ARRAY_LENGTH = 4294967295, + MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1, + HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; + + /** Used to associate wrap methods with their bit flags. */ + var wrapFlags = [ + ['ary', WRAP_ARY_FLAG], + ['bind', WRAP_BIND_FLAG], + ['bindKey', WRAP_BIND_KEY_FLAG], + ['curry', WRAP_CURRY_FLAG], + ['curryRight', WRAP_CURRY_RIGHT_FLAG], + ['flip', WRAP_FLIP_FLAG], + ['partial', WRAP_PARTIAL_FLAG], + ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], + ['rearg', WRAP_REARG_FLAG] + ]; + + /** `Object#toString` result references. */ + var argsTag = '[object Arguments]', + arrayTag = '[object Array]', + asyncTag = '[object AsyncFunction]', + boolTag = '[object Boolean]', + dateTag = '[object Date]', + domExcTag = '[object DOMException]', + errorTag = '[object Error]', + funcTag = '[object Function]', + genTag = '[object GeneratorFunction]', + mapTag = '[object Map]', + numberTag = '[object Number]', + nullTag = '[object Null]', + objectTag = '[object Object]', + promiseTag = '[object Promise]', + proxyTag = '[object Proxy]', + regexpTag = '[object RegExp]', + setTag = '[object Set]', + stringTag = '[object String]', + symbolTag = '[object Symbol]', + undefinedTag = '[object Undefined]', + weakMapTag = '[object WeakMap]', + weakSetTag = '[object WeakSet]'; + + var arrayBufferTag = '[object ArrayBuffer]', + dataViewTag = '[object DataView]', + float32Tag = '[object Float32Array]', + float64Tag = '[object Float64Array]', + int8Tag = '[object Int8Array]', + int16Tag = '[object Int16Array]', + int32Tag = '[object Int32Array]', + uint8Tag = '[object Uint8Array]', + uint8ClampedTag = '[object Uint8ClampedArray]', + uint16Tag = '[object Uint16Array]', + uint32Tag = '[object Uint32Array]'; + + /** Used to match empty string literals in compiled template source. */ + var reEmptyStringLeading = /\b__p \+= '';/g, + reEmptyStringMiddle = /\b(__p \+=) '' \+/g, + reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; + + /** Used to match HTML entities and HTML characters. */ + var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g, + reUnescapedHtml = /[&<>"']/g, + reHasEscapedHtml = RegExp(reEscapedHtml.source), + reHasUnescapedHtml = RegExp(reUnescapedHtml.source); + + /** Used to match template delimiters. */ + var reEscape = /<%-([\s\S]+?)%>/g, + reEvaluate = /<%([\s\S]+?)%>/g, + reInterpolate = /<%=([\s\S]+?)%>/g; + + /** Used to match property names within property paths. */ + var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, + reIsPlainProp = /^\w*$/, + rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g; + + /** + * Used to match `RegExp` + * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns). + */ + var reRegExpChar = /[\\^$.*+?()[\]{}|]/g, + reHasRegExpChar = RegExp(reRegExpChar.source); + + /** Used to match leading and trailing whitespace. */ + var reTrim = /^\s+|\s+$/g, + reTrimStart = /^\s+/, + reTrimEnd = /\s+$/; + + /** Used to match wrap detail comments. */ + var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/, + reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/, + reSplitDetails = /,? & /; + + /** Used to match words composed of alphanumeric characters. */ + var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g; + + /** Used to match backslashes in property paths. */ + var reEscapeChar = /\\(\\)?/g; + + /** + * Used to match + * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components). + */ + var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; + + /** Used to match `RegExp` flags from their coerced string values. */ + var reFlags = /\w*$/; + + /** Used to detect bad signed hexadecimal string values. */ + var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; + + /** Used to detect binary string values. */ + var reIsBinary = /^0b[01]+$/i; + + /** Used to detect host constructors (Safari). */ + var reIsHostCtor = /^\[object .+?Constructor\]$/; + + /** Used to detect octal string values. */ + var reIsOctal = /^0o[0-7]+$/i; + + /** Used to detect unsigned integer values. */ + var reIsUint = /^(?:0|[1-9]\d*)$/; + + /** Used to match Latin Unicode letters (excluding mathematical operators). */ + var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g; + + /** Used to ensure capturing order of template delimiters. */ + var reNoMatch = /($^)/; + + /** Used to match unescaped characters in compiled string literals. */ + var reUnescapedString = /['\n\r\u2028\u2029\\]/g; + + /** Used to compose unicode character classes. */ + var rsAstralRange = '\\ud800-\\udfff', + rsComboMarksRange = '\\u0300-\\u036f', + reComboHalfMarksRange = '\\ufe20-\\ufe2f', + rsComboSymbolsRange = '\\u20d0-\\u20ff', + rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange, + rsDingbatRange = '\\u2700-\\u27bf', + rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff', + rsMathOpRange = '\\xac\\xb1\\xd7\\xf7', + rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf', + rsPunctuationRange = '\\u2000-\\u206f', + rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000', + rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde', + rsVarRange = '\\ufe0e\\ufe0f', + rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange; + + /** Used to compose unicode capture groups. */ + var rsApos = "['\u2019]", + rsAstral = '[' + rsAstralRange + ']', + rsBreak = '[' + rsBreakRange + ']', + rsCombo = '[' + rsComboRange + ']', + rsDigits = '\\d+', + rsDingbat = '[' + rsDingbatRange + ']', + rsLower = '[' + rsLowerRange + ']', + rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']', + rsFitz = '\\ud83c[\\udffb-\\udfff]', + rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')', + rsNonAstral = '[^' + rsAstralRange + ']', + rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}', + rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]', + rsUpper = '[' + rsUpperRange + ']', + rsZWJ = '\\u200d'; + + /** Used to compose unicode regexes. */ + var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')', + rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')', + rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?', + rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?', + reOptMod = rsModifier + '?', + rsOptVar = '[' + rsVarRange + ']?', + rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*', + rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])', + rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])', + rsSeq = rsOptVar + reOptMod + rsOptJoin, + rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq, + rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')'; + + /** Used to match apostrophes. */ + var reApos = RegExp(rsApos, 'g'); + + /** + * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and + * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols). + */ + var reComboMark = RegExp(rsCombo, 'g'); + + /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ + var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); + + /** Used to match complex or compound words. */ + var reUnicodeWord = RegExp([ + rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', + rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', + rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, + rsUpper + '+' + rsOptContrUpper, + rsOrdUpper, + rsOrdLower, + rsDigits, + rsEmoji + ].join('|'), 'g'); + + /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ + var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']'); + + /** Used to detect strings that need a more robust regexp to match words. */ + var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/; + + /** Used to assign default `context` object properties. */ + var contextProps = [ + 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', + 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', + 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', + 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', + '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout' + ]; + + /** Used to make template sourceURLs easier to identify. */ + var templateCounter = -1; + + /** Used to identify `toStringTag` values of typed arrays. */ + var typedArrayTags = {}; + typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = + typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = + typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = + typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = + typedArrayTags[uint32Tag] = true; + typedArrayTags[argsTag] = typedArrayTags[arrayTag] = + typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = + typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = + typedArrayTags[errorTag] = typedArrayTags[funcTag] = + typedArrayTags[mapTag] = typedArrayTags[numberTag] = + typedArrayTags[objectTag] = typedArrayTags[regexpTag] = + typedArrayTags[setTag] = typedArrayTags[stringTag] = + typedArrayTags[weakMapTag] = false; + + /** Used to identify `toStringTag` values supported by `_.clone`. */ + var cloneableTags = {}; + cloneableTags[argsTag] = cloneableTags[arrayTag] = + cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = + cloneableTags[boolTag] = cloneableTags[dateTag] = + cloneableTags[float32Tag] = cloneableTags[float64Tag] = + cloneableTags[int8Tag] = cloneableTags[int16Tag] = + cloneableTags[int32Tag] = cloneableTags[mapTag] = + cloneableTags[numberTag] = cloneableTags[objectTag] = + cloneableTags[regexpTag] = cloneableTags[setTag] = + cloneableTags[stringTag] = cloneableTags[symbolTag] = + cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = + cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true; + cloneableTags[errorTag] = cloneableTags[funcTag] = + cloneableTags[weakMapTag] = false; + + /** Used to map Latin Unicode letters to basic Latin letters. */ + var deburredLetters = { + // Latin-1 Supplement block. + '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A', + '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a', + '\xc7': 'C', '\xe7': 'c', + '\xd0': 'D', '\xf0': 'd', + '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E', + '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e', + '\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I', + '\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i', + '\xd1': 'N', '\xf1': 'n', + '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O', + '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o', + '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U', + '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u', + '\xdd': 'Y', '\xfd': 'y', '\xff': 'y', + '\xc6': 'Ae', '\xe6': 'ae', + '\xde': 'Th', '\xfe': 'th', + '\xdf': 'ss', + // Latin Extended-A block. + '\u0100': 'A', '\u0102': 'A', '\u0104': 'A', + '\u0101': 'a', '\u0103': 'a', '\u0105': 'a', + '\u0106': 'C', '\u0108': 'C', '\u010a': 'C', '\u010c': 'C', + '\u0107': 'c', '\u0109': 'c', '\u010b': 'c', '\u010d': 'c', + '\u010e': 'D', '\u0110': 'D', '\u010f': 'd', '\u0111': 'd', + '\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E', + '\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e', + '\u011c': 'G', '\u011e': 'G', '\u0120': 'G', '\u0122': 'G', + '\u011d': 'g', '\u011f': 'g', '\u0121': 'g', '\u0123': 'g', + '\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h', + '\u0128': 'I', '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I', + '\u0129': 'i', '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i', + '\u0134': 'J', '\u0135': 'j', + '\u0136': 'K', '\u0137': 'k', '\u0138': 'k', + '\u0139': 'L', '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L', + '\u013a': 'l', '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l', + '\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014a': 'N', + '\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014b': 'n', + '\u014c': 'O', '\u014e': 'O', '\u0150': 'O', + '\u014d': 'o', '\u014f': 'o', '\u0151': 'o', + '\u0154': 'R', '\u0156': 'R', '\u0158': 'R', + '\u0155': 'r', '\u0157': 'r', '\u0159': 'r', + '\u015a': 'S', '\u015c': 'S', '\u015e': 'S', '\u0160': 'S', + '\u015b': 's', '\u015d': 's', '\u015f': 's', '\u0161': 's', + '\u0162': 'T', '\u0164': 'T', '\u0166': 'T', + '\u0163': 't', '\u0165': 't', '\u0167': 't', + '\u0168': 'U', '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U', + '\u0169': 'u', '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u', + '\u0174': 'W', '\u0175': 'w', + '\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y', + '\u0179': 'Z', '\u017b': 'Z', '\u017d': 'Z', + '\u017a': 'z', '\u017c': 'z', '\u017e': 'z', + '\u0132': 'IJ', '\u0133': 'ij', + '\u0152': 'Oe', '\u0153': 'oe', + '\u0149': "'n", '\u017f': 's' + }; + + /** Used to map characters to HTML entities. */ + var htmlEscapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''' + }; + + /** Used to map HTML entities to characters. */ + var htmlUnescapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + ''': "'" + }; + + /** Used to escape characters for inclusion in compiled string literals. */ + var stringEscapes = { + '\\': '\\', + "'": "'", + '\n': 'n', + '\r': 'r', + '\u2028': 'u2028', + '\u2029': 'u2029' + }; + + /** Built-in method references without a dependency on `root`. */ + var freeParseFloat = parseFloat, + freeParseInt = parseInt; + + /** Detect free variable `global` from Node.js. */ + var freeGlobal = typeof global == 'object' && global && global.Object === Object && global; + + /** Detect free variable `self`. */ + var freeSelf = typeof self == 'object' && self && self.Object === Object && self; + + /** Used as a reference to the global object. */ + var root = freeGlobal || freeSelf || Function('return this')(); + + /** Detect free variable `exports`. */ + var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports; + + /** Detect free variable `module`. */ + var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module; + + /** Detect the popular CommonJS extension `module.exports`. */ + var moduleExports = freeModule && freeModule.exports === freeExports; + + /** Detect free variable `process` from Node.js. */ + var freeProcess = moduleExports && freeGlobal.process; + + /** Used to access faster Node.js helpers. */ + var nodeUtil = (function() { + try { + // Use `util.types` for Node.js 10+. + var types = freeModule && freeModule.require && freeModule.require('util').types; + + if (types) { + return types; + } + + // Legacy `process.binding('util')` for Node.js < 10. + return freeProcess && freeProcess.binding && freeProcess.binding('util'); + } catch (e) {} + }()); + + /* Node.js helper references. */ + var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer, + nodeIsDate = nodeUtil && nodeUtil.isDate, + nodeIsMap = nodeUtil && nodeUtil.isMap, + nodeIsRegExp = nodeUtil && nodeUtil.isRegExp, + nodeIsSet = nodeUtil && nodeUtil.isSet, + nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; + + /*--------------------------------------------------------------------------*/ + + /** + * A faster alternative to `Function#apply`, this function invokes `func` + * with the `this` binding of `thisArg` and the arguments of `args`. + * + * @private + * @param {Function} func The function to invoke. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} args The arguments to invoke `func` with. + * @returns {*} Returns the result of `func`. + */ + function apply(func, thisArg, args) { + switch (args.length) { + case 0: return func.call(thisArg); + case 1: return func.call(thisArg, args[0]); + case 2: return func.call(thisArg, args[0], args[1]); + case 3: return func.call(thisArg, args[0], args[1], args[2]); + } + return func.apply(thisArg, args); + } + + /** + * A specialized version of `baseAggregator` for arrays. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function arrayAggregator(array, setter, iteratee, accumulator) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + var value = array[index]; + setter(accumulator, value, iteratee(value), array); + } + return accumulator; + } + + /** + * A specialized version of `_.forEach` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEach(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (iteratee(array[index], index, array) === false) { + break; + } + } + return array; + } + + /** + * A specialized version of `_.forEachRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEachRight(array, iteratee) { + var length = array == null ? 0 : array.length; + + while (length--) { + if (iteratee(array[length], length, array) === false) { + break; + } + } + return array; + } + + /** + * A specialized version of `_.every` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + */ + function arrayEvery(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (!predicate(array[index], index, array)) { + return false; + } + } + return true; + } + + /** + * A specialized version of `_.filter` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function arrayFilter(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result[resIndex++] = value; + } + } + return result; + } + + /** + * A specialized version of `_.includes` for arrays without support for + * specifying an index to search from. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludes(array, value) { + var length = array == null ? 0 : array.length; + return !!length && baseIndexOf(array, value, 0) > -1; + } + + /** + * This function is like `arrayIncludes` except that it accepts a comparator. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @param {Function} comparator The comparator invoked per element. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludesWith(array, value, comparator) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (comparator(value, array[index])) { + return true; + } + } + return false; + } + + /** + * A specialized version of `_.map` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function arrayMap(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length, + result = Array(length); + + while (++index < length) { + result[index] = iteratee(array[index], index, array); + } + return result; + } + + /** + * Appends the elements of `values` to `array`. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to append. + * @returns {Array} Returns `array`. + */ + function arrayPush(array, values) { + var index = -1, + length = values.length, + offset = array.length; + + while (++index < length) { + array[offset + index] = values[index]; + } + return array; + } + + /** + * A specialized version of `_.reduce` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the first element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduce(array, iteratee, accumulator, initAccum) { + var index = -1, + length = array == null ? 0 : array.length; + + if (initAccum && length) { + accumulator = array[++index]; + } + while (++index < length) { + accumulator = iteratee(accumulator, array[index], index, array); + } + return accumulator; + } + + /** + * A specialized version of `_.reduceRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the last element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduceRight(array, iteratee, accumulator, initAccum) { + var length = array == null ? 0 : array.length; + if (initAccum && length) { + accumulator = array[--length]; + } + while (length--) { + accumulator = iteratee(accumulator, array[length], length, array); + } + return accumulator; + } + + /** + * A specialized version of `_.some` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function arraySome(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (predicate(array[index], index, array)) { + return true; + } + } + return false; + } + + /** + * Gets the size of an ASCII `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + var asciiSize = baseProperty('length'); + + /** + * Converts an ASCII `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function asciiToArray(string) { + return string.split(''); + } + + /** + * Splits an ASCII `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function asciiWords(string) { + return string.match(reAsciiWord) || []; + } + + /** + * The base implementation of methods like `_.findKey` and `_.findLastKey`, + * without support for iteratee shorthands, which iterates over `collection` + * using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the found element or its key, else `undefined`. + */ + function baseFindKey(collection, predicate, eachFunc) { + var result; + eachFunc(collection, function(value, key, collection) { + if (predicate(value, key, collection)) { + result = key; + return false; + } + }); + return result; + } + + /** + * The base implementation of `_.findIndex` and `_.findLastIndex` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {number} fromIndex The index to search from. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseFindIndex(array, predicate, fromIndex, fromRight) { + var length = array.length, + index = fromIndex + (fromRight ? 1 : -1); + + while ((fromRight ? index-- : ++index < length)) { + if (predicate(array[index], index, array)) { + return index; + } + } + return -1; + } + + /** + * The base implementation of `_.indexOf` without `fromIndex` bounds checks. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOf(array, value, fromIndex) { + return value === value + ? strictIndexOf(array, value, fromIndex) + : baseFindIndex(array, baseIsNaN, fromIndex); + } + + /** + * This function is like `baseIndexOf` except that it accepts a comparator. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @param {Function} comparator The comparator invoked per element. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOfWith(array, value, fromIndex, comparator) { + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (comparator(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * The base implementation of `_.isNaN` without support for number objects. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + */ + function baseIsNaN(value) { + return value !== value; + } + + /** + * The base implementation of `_.mean` and `_.meanBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the mean. + */ + function baseMean(array, iteratee) { + var length = array == null ? 0 : array.length; + return length ? (baseSum(array, iteratee) / length) : NAN; + } + + /** + * The base implementation of `_.property` without support for deep paths. + * + * @private + * @param {string} key The key of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function baseProperty(key) { + return function(object) { + return object == null ? undefined : object[key]; + }; + } + + /** + * The base implementation of `_.propertyOf` without support for deep paths. + * + * @private + * @param {Object} object The object to query. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyOf(object) { + return function(key) { + return object == null ? undefined : object[key]; + }; + } + + /** + * The base implementation of `_.reduce` and `_.reduceRight`, without support + * for iteratee shorthands, which iterates over `collection` using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} accumulator The initial value. + * @param {boolean} initAccum Specify using the first or last element of + * `collection` as the initial value. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the accumulated value. + */ + function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) { + eachFunc(collection, function(value, index, collection) { + accumulator = initAccum + ? (initAccum = false, value) + : iteratee(accumulator, value, index, collection); + }); + return accumulator; + } + + /** + * The base implementation of `_.sortBy` which uses `comparer` to define the + * sort order of `array` and replaces criteria objects with their corresponding + * values. + * + * @private + * @param {Array} array The array to sort. + * @param {Function} comparer The function to define sort order. + * @returns {Array} Returns `array`. + */ + function baseSortBy(array, comparer) { + var length = array.length; + + array.sort(comparer); + while (length--) { + array[length] = array[length].value; + } + return array; + } + + /** + * The base implementation of `_.sum` and `_.sumBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the sum. + */ + function baseSum(array, iteratee) { + var result, + index = -1, + length = array.length; + + while (++index < length) { + var current = iteratee(array[index]); + if (current !== undefined) { + result = result === undefined ? current : (result + current); + } + } + return result; + } + + /** + * The base implementation of `_.times` without support for iteratee shorthands + * or max array length checks. + * + * @private + * @param {number} n The number of times to invoke `iteratee`. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the array of results. + */ + function baseTimes(n, iteratee) { + var index = -1, + result = Array(n); + + while (++index < n) { + result[index] = iteratee(index); + } + return result; + } + + /** + * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array + * of key-value pairs for `object` corresponding to the property names of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the key-value pairs. + */ + function baseToPairs(object, props) { + return arrayMap(props, function(key) { + return [key, object[key]]; + }); + } + + /** + * The base implementation of `_.unary` without support for storing metadata. + * + * @private + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + */ + function baseUnary(func) { + return function(value) { + return func(value); + }; + } + + /** + * The base implementation of `_.values` and `_.valuesIn` which creates an + * array of `object` property values corresponding to the property names + * of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the array of property values. + */ + function baseValues(object, props) { + return arrayMap(props, function(key) { + return object[key]; + }); + } + + /** + * Checks if a `cache` value for `key` exists. + * + * @private + * @param {Object} cache The cache to query. + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function cacheHas(cache, key) { + return cache.has(key); + } + + /** + * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the first unmatched string symbol. + */ + function charsStartIndex(strSymbols, chrSymbols) { + var index = -1, + length = strSymbols.length; + + while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** + * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the last unmatched string symbol. + */ + function charsEndIndex(strSymbols, chrSymbols) { + var index = strSymbols.length; + + while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** + * Gets the number of `placeholder` occurrences in `array`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} placeholder The placeholder to search for. + * @returns {number} Returns the placeholder count. + */ + function countHolders(array, placeholder) { + var length = array.length, + result = 0; + + while (length--) { + if (array[length] === placeholder) { + ++result; + } + } + return result; + } + + /** + * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A + * letters to basic Latin letters. + * + * @private + * @param {string} letter The matched letter to deburr. + * @returns {string} Returns the deburred letter. + */ + var deburrLetter = basePropertyOf(deburredLetters); + + /** + * Used by `_.escape` to convert characters to HTML entities. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + var escapeHtmlChar = basePropertyOf(htmlEscapes); + + /** + * Used by `_.template` to escape characters for inclusion in compiled string literals. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + function escapeStringChar(chr) { + return '\\' + stringEscapes[chr]; + } + + /** + * Gets the value at `key` of `object`. + * + * @private + * @param {Object} [object] The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function getValue(object, key) { + return object == null ? undefined : object[key]; + } + + /** + * Checks if `string` contains Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a symbol is found, else `false`. + */ + function hasUnicode(string) { + return reHasUnicode.test(string); + } + + /** + * Checks if `string` contains a word composed of Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a word is found, else `false`. + */ + function hasUnicodeWord(string) { + return reHasUnicodeWord.test(string); + } + + /** + * Converts `iterator` to an array. + * + * @private + * @param {Object} iterator The iterator to convert. + * @returns {Array} Returns the converted array. + */ + function iteratorToArray(iterator) { + var data, + result = []; + + while (!(data = iterator.next()).done) { + result.push(data.value); + } + return result; + } + + /** + * Converts `map` to its key-value pairs. + * + * @private + * @param {Object} map The map to convert. + * @returns {Array} Returns the key-value pairs. + */ + function mapToArray(map) { + var index = -1, + result = Array(map.size); + + map.forEach(function(value, key) { + result[++index] = [key, value]; + }); + return result; + } + + /** + * Creates a unary function that invokes `func` with its argument transformed. + * + * @private + * @param {Function} func The function to wrap. + * @param {Function} transform The argument transform. + * @returns {Function} Returns the new function. + */ + function overArg(func, transform) { + return function(arg) { + return func(transform(arg)); + }; + } + + /** + * Replaces all `placeholder` elements in `array` with an internal placeholder + * and returns an array of their indexes. + * + * @private + * @param {Array} array The array to modify. + * @param {*} placeholder The placeholder to replace. + * @returns {Array} Returns the new array of placeholder indexes. + */ + function replaceHolders(array, placeholder) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value === placeholder || value === PLACEHOLDER) { + array[index] = PLACEHOLDER; + result[resIndex++] = index; + } + } + return result; + } + + /** + * Converts `set` to an array of its values. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the values. + */ + function setToArray(set) { + var index = -1, + result = Array(set.size); + + set.forEach(function(value) { + result[++index] = value; + }); + return result; + } + + /** + * Converts `set` to its value-value pairs. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the value-value pairs. + */ + function setToPairs(set) { + var index = -1, + result = Array(set.size); + + set.forEach(function(value) { + result[++index] = [value, value]; + }); + return result; + } + + /** + * A specialized version of `_.indexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictIndexOf(array, value, fromIndex) { + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (array[index] === value) { + return index; + } + } + return -1; + } + + /** + * A specialized version of `_.lastIndexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictLastIndexOf(array, value, fromIndex) { + var index = fromIndex + 1; + while (index--) { + if (array[index] === value) { + return index; + } + } + return index; + } + + /** + * Gets the number of symbols in `string`. + * + * @private + * @param {string} string The string to inspect. + * @returns {number} Returns the string size. + */ + function stringSize(string) { + return hasUnicode(string) + ? unicodeSize(string) + : asciiSize(string); + } + + /** + * Converts `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function stringToArray(string) { + return hasUnicode(string) + ? unicodeToArray(string) + : asciiToArray(string); + } + + /** + * Used by `_.unescape` to convert HTML entities to characters. + * + * @private + * @param {string} chr The matched character to unescape. + * @returns {string} Returns the unescaped character. + */ + var unescapeHtmlChar = basePropertyOf(htmlUnescapes); + + /** + * Gets the size of a Unicode `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + function unicodeSize(string) { + var result = reUnicode.lastIndex = 0; + while (reUnicode.test(string)) { + ++result; + } + return result; + } + + /** + * Converts a Unicode `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function unicodeToArray(string) { + return string.match(reUnicode) || []; + } + + /** + * Splits a Unicode `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function unicodeWords(string) { + return string.match(reUnicodeWord) || []; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Create a new pristine `lodash` function using the `context` object. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Util + * @param {Object} [context=root] The context object. + * @returns {Function} Returns a new `lodash` function. + * @example + * + * _.mixin({ 'foo': _.constant('foo') }); + * + * var lodash = _.runInContext(); + * lodash.mixin({ 'bar': lodash.constant('bar') }); + * + * _.isFunction(_.foo); + * // => true + * _.isFunction(_.bar); + * // => false + * + * lodash.isFunction(lodash.foo); + * // => false + * lodash.isFunction(lodash.bar); + * // => true + * + * // Create a suped-up `defer` in Node.js. + * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer; + */ + var runInContext = (function runInContext(context) { + context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps)); + + /** Built-in constructor references. */ + var Array = context.Array, + Date = context.Date, + Error = context.Error, + Function = context.Function, + Math = context.Math, + Object = context.Object, + RegExp = context.RegExp, + String = context.String, + TypeError = context.TypeError; + + /** Used for built-in method references. */ + var arrayProto = Array.prototype, + funcProto = Function.prototype, + objectProto = Object.prototype; + + /** Used to detect overreaching core-js shims. */ + var coreJsData = context['__core-js_shared__']; + + /** Used to resolve the decompiled source of functions. */ + var funcToString = funcProto.toString; + + /** Used to check objects for own properties. */ + var hasOwnProperty = objectProto.hasOwnProperty; + + /** Used to generate unique IDs. */ + var idCounter = 0; + + /** Used to detect methods masquerading as native. */ + var maskSrcKey = (function() { + var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || ''); + return uid ? ('Symbol(src)_1.' + uid) : ''; + }()); + + /** + * Used to resolve the + * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring) + * of values. + */ + var nativeObjectToString = objectProto.toString; + + /** Used to infer the `Object` constructor. */ + var objectCtorString = funcToString.call(Object); + + /** Used to restore the original `_` reference in `_.noConflict`. */ + var oldDash = root._; + + /** Used to detect if a method is native. */ + var reIsNative = RegExp('^' + + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&') + .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' + ); + + /** Built-in value references. */ + var Buffer = moduleExports ? context.Buffer : undefined, + Symbol = context.Symbol, + Uint8Array = context.Uint8Array, + allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined, + getPrototype = overArg(Object.getPrototypeOf, Object), + objectCreate = Object.create, + propertyIsEnumerable = objectProto.propertyIsEnumerable, + splice = arrayProto.splice, + spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined, + symIterator = Symbol ? Symbol.iterator : undefined, + symToStringTag = Symbol ? Symbol.toStringTag : undefined; + + var defineProperty = (function() { + try { + var func = getNative(Object, 'defineProperty'); + func({}, '', {}); + return func; + } catch (e) {} + }()); + + /** Mocked built-ins. */ + var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout, + ctxNow = Date && Date.now !== root.Date.now && Date.now, + ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout; + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeCeil = Math.ceil, + nativeFloor = Math.floor, + nativeGetSymbols = Object.getOwnPropertySymbols, + nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined, + nativeIsFinite = context.isFinite, + nativeJoin = arrayProto.join, + nativeKeys = overArg(Object.keys, Object), + nativeMax = Math.max, + nativeMin = Math.min, + nativeNow = Date.now, + nativeParseInt = context.parseInt, + nativeRandom = Math.random, + nativeReverse = arrayProto.reverse; + + /* Built-in method references that are verified to be native. */ + var DataView = getNative(context, 'DataView'), + Map = getNative(context, 'Map'), + Promise = getNative(context, 'Promise'), + Set = getNative(context, 'Set'), + WeakMap = getNative(context, 'WeakMap'), + nativeCreate = getNative(Object, 'create'); + + /** Used to store function metadata. */ + var metaMap = WeakMap && new WeakMap; + + /** Used to lookup unminified function names. */ + var realNames = {}; + + /** Used to detect maps, sets, and weakmaps. */ + var dataViewCtorString = toSource(DataView), + mapCtorString = toSource(Map), + promiseCtorString = toSource(Promise), + setCtorString = toSource(Set), + weakMapCtorString = toSource(WeakMap); + + /** Used to convert symbols to primitives and strings. */ + var symbolProto = Symbol ? Symbol.prototype : undefined, + symbolValueOf = symbolProto ? symbolProto.valueOf : undefined, + symbolToString = symbolProto ? symbolProto.toString : undefined; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` object which wraps `value` to enable implicit method + * chain sequences. Methods that operate on and return arrays, collections, + * and functions can be chained together. Methods that retrieve a single value + * or may return a primitive value will automatically end the chain sequence + * and return the unwrapped value. Otherwise, the value must be unwrapped + * with `_#value`. + * + * Explicit chain sequences, which must be unwrapped with `_#value`, may be + * enabled using `_.chain`. + * + * The execution of chained methods is lazy, that is, it's deferred until + * `_#value` is implicitly or explicitly called. + * + * Lazy evaluation allows several methods to support shortcut fusion. + * Shortcut fusion is an optimization to merge iteratee calls; this avoids + * the creation of intermediate arrays and can greatly reduce the number of + * iteratee executions. Sections of a chain sequence qualify for shortcut + * fusion if the section is applied to an array and iteratees accept only + * one argument. The heuristic for whether a section qualifies for shortcut + * fusion is subject to change. + * + * Chaining is supported in custom builds as long as the `_#value` method is + * directly or indirectly included in the build. + * + * In addition to lodash methods, wrappers have `Array` and `String` methods. + * + * The wrapper `Array` methods are: + * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift` + * + * The wrapper `String` methods are: + * `replace` and `split` + * + * The wrapper methods that support shortcut fusion are: + * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`, + * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`, + * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray` + * + * The chainable wrapper methods are: + * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`, + * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`, + * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`, + * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`, + * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`, + * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`, + * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`, + * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`, + * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`, + * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`, + * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`, + * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`, + * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`, + * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`, + * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`, + * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`, + * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`, + * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`, + * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`, + * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`, + * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`, + * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`, + * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`, + * `zipObject`, `zipObjectDeep`, and `zipWith` + * + * The wrapper methods that are **not** chainable by default are: + * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`, + * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`, + * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`, + * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`, + * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`, + * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`, + * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`, + * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`, + * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`, + * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`, + * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`, + * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`, + * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`, + * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`, + * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`, + * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`, + * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`, + * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`, + * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`, + * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`, + * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`, + * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`, + * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`, + * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`, + * `upperFirst`, `value`, and `words` + * + * @name _ + * @constructor + * @category Seq + * @param {*} value The value to wrap in a `lodash` instance. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2, 3]); + * + * // Returns an unwrapped value. + * wrapped.reduce(_.add); + * // => 6 + * + * // Returns a wrapped value. + * var squares = wrapped.map(square); + * + * _.isArray(squares); + * // => false + * + * _.isArray(squares.value()); + * // => true + */ + function lodash(value) { + if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) { + if (value instanceof LodashWrapper) { + return value; + } + if (hasOwnProperty.call(value, '__wrapped__')) { + return wrapperClone(value); + } + } + return new LodashWrapper(value); + } + + /** + * The base implementation of `_.create` without support for assigning + * properties to the created object. + * + * @private + * @param {Object} proto The object to inherit from. + * @returns {Object} Returns the new object. + */ + var baseCreate = (function() { + function object() {} + return function(proto) { + if (!isObject(proto)) { + return {}; + } + if (objectCreate) { + return objectCreate(proto); + } + object.prototype = proto; + var result = new object; + object.prototype = undefined; + return result; + }; + }()); + + /** + * The function whose prototype chain sequence wrappers inherit from. + * + * @private + */ + function baseLodash() { + // No operation performed. + } + + /** + * The base constructor for creating `lodash` wrapper objects. + * + * @private + * @param {*} value The value to wrap. + * @param {boolean} [chainAll] Enable explicit method chain sequences. + */ + function LodashWrapper(value, chainAll) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__chain__ = !!chainAll; + this.__index__ = 0; + this.__values__ = undefined; + } + + /** + * By default, the template delimiters used by lodash are like those in + * embedded Ruby (ERB) as well as ES2015 template strings. Change the + * following template settings to use alternative delimiters. + * + * @static + * @memberOf _ + * @type {Object} + */ + lodash.templateSettings = { + + /** + * Used to detect `data` property values to be HTML-escaped. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'escape': reEscape, + + /** + * Used to detect code to be evaluated. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'evaluate': reEvaluate, + + /** + * Used to detect `data` property values to inject. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'interpolate': reInterpolate, + + /** + * Used to reference the data object in the template text. + * + * @memberOf _.templateSettings + * @type {string} + */ + 'variable': '', + + /** + * Used to import variables into the compiled template. + * + * @memberOf _.templateSettings + * @type {Object} + */ + 'imports': { + + /** + * A reference to the `lodash` function. + * + * @memberOf _.templateSettings.imports + * @type {Function} + */ + '_': lodash + } + }; + + // Ensure wrappers are instances of `baseLodash`. + lodash.prototype = baseLodash.prototype; + lodash.prototype.constructor = lodash; + + LodashWrapper.prototype = baseCreate(baseLodash.prototype); + LodashWrapper.prototype.constructor = LodashWrapper; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation. + * + * @private + * @constructor + * @param {*} value The value to wrap. + */ + function LazyWrapper(value) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__dir__ = 1; + this.__filtered__ = false; + this.__iteratees__ = []; + this.__takeCount__ = MAX_ARRAY_LENGTH; + this.__views__ = []; + } + + /** + * Creates a clone of the lazy wrapper object. + * + * @private + * @name clone + * @memberOf LazyWrapper + * @returns {Object} Returns the cloned `LazyWrapper` object. + */ + function lazyClone() { + var result = new LazyWrapper(this.__wrapped__); + result.__actions__ = copyArray(this.__actions__); + result.__dir__ = this.__dir__; + result.__filtered__ = this.__filtered__; + result.__iteratees__ = copyArray(this.__iteratees__); + result.__takeCount__ = this.__takeCount__; + result.__views__ = copyArray(this.__views__); + return result; + } + + /** + * Reverses the direction of lazy iteration. + * + * @private + * @name reverse + * @memberOf LazyWrapper + * @returns {Object} Returns the new reversed `LazyWrapper` object. + */ + function lazyReverse() { + if (this.__filtered__) { + var result = new LazyWrapper(this); + result.__dir__ = -1; + result.__filtered__ = true; + } else { + result = this.clone(); + result.__dir__ *= -1; + } + return result; + } + + /** + * Extracts the unwrapped value from its lazy wrapper. + * + * @private + * @name value + * @memberOf LazyWrapper + * @returns {*} Returns the unwrapped value. + */ + function lazyValue() { + var array = this.__wrapped__.value(), + dir = this.__dir__, + isArr = isArray(array), + isRight = dir < 0, + arrLength = isArr ? array.length : 0, + view = getView(0, arrLength, this.__views__), + start = view.start, + end = view.end, + length = end - start, + index = isRight ? end : (start - 1), + iteratees = this.__iteratees__, + iterLength = iteratees.length, + resIndex = 0, + takeCount = nativeMin(length, this.__takeCount__); + + if (!isArr || (!isRight && arrLength == length && takeCount == length)) { + return baseWrapperValue(array, this.__actions__); + } + var result = []; + + outer: + while (length-- && resIndex < takeCount) { + index += dir; + + var iterIndex = -1, + value = array[index]; + + while (++iterIndex < iterLength) { + var data = iteratees[iterIndex], + iteratee = data.iteratee, + type = data.type, + computed = iteratee(value); + + if (type == LAZY_MAP_FLAG) { + value = computed; + } else if (!computed) { + if (type == LAZY_FILTER_FLAG) { + continue outer; + } else { + break outer; + } + } + } + result[resIndex++] = value; + } + return result; + } + + // Ensure `LazyWrapper` is an instance of `baseLodash`. + LazyWrapper.prototype = baseCreate(baseLodash.prototype); + LazyWrapper.prototype.constructor = LazyWrapper; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a hash object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Hash(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the hash. + * + * @private + * @name clear + * @memberOf Hash + */ + function hashClear() { + this.__data__ = nativeCreate ? nativeCreate(null) : {}; + this.size = 0; + } + + /** + * Removes `key` and its value from the hash. + * + * @private + * @name delete + * @memberOf Hash + * @param {Object} hash The hash to modify. + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function hashDelete(key) { + var result = this.has(key) && delete this.__data__[key]; + this.size -= result ? 1 : 0; + return result; + } + + /** + * Gets the hash value for `key`. + * + * @private + * @name get + * @memberOf Hash + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function hashGet(key) { + var data = this.__data__; + if (nativeCreate) { + var result = data[key]; + return result === HASH_UNDEFINED ? undefined : result; + } + return hasOwnProperty.call(data, key) ? data[key] : undefined; + } + + /** + * Checks if a hash value for `key` exists. + * + * @private + * @name has + * @memberOf Hash + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function hashHas(key) { + var data = this.__data__; + return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key); + } + + /** + * Sets the hash `key` to `value`. + * + * @private + * @name set + * @memberOf Hash + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the hash instance. + */ + function hashSet(key, value) { + var data = this.__data__; + this.size += this.has(key) ? 0 : 1; + data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value; + return this; + } + + // Add methods to `Hash`. + Hash.prototype.clear = hashClear; + Hash.prototype['delete'] = hashDelete; + Hash.prototype.get = hashGet; + Hash.prototype.has = hashHas; + Hash.prototype.set = hashSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates an list cache object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function ListCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the list cache. + * + * @private + * @name clear + * @memberOf ListCache + */ + function listCacheClear() { + this.__data__ = []; + this.size = 0; + } + + /** + * Removes `key` and its value from the list cache. + * + * @private + * @name delete + * @memberOf ListCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function listCacheDelete(key) { + var data = this.__data__, + index = assocIndexOf(data, key); + + if (index < 0) { + return false; + } + var lastIndex = data.length - 1; + if (index == lastIndex) { + data.pop(); + } else { + splice.call(data, index, 1); + } + --this.size; + return true; + } + + /** + * Gets the list cache value for `key`. + * + * @private + * @name get + * @memberOf ListCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function listCacheGet(key) { + var data = this.__data__, + index = assocIndexOf(data, key); + + return index < 0 ? undefined : data[index][1]; + } + + /** + * Checks if a list cache value for `key` exists. + * + * @private + * @name has + * @memberOf ListCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function listCacheHas(key) { + return assocIndexOf(this.__data__, key) > -1; + } + + /** + * Sets the list cache `key` to `value`. + * + * @private + * @name set + * @memberOf ListCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the list cache instance. + */ + function listCacheSet(key, value) { + var data = this.__data__, + index = assocIndexOf(data, key); + + if (index < 0) { + ++this.size; + data.push([key, value]); + } else { + data[index][1] = value; + } + return this; + } + + // Add methods to `ListCache`. + ListCache.prototype.clear = listCacheClear; + ListCache.prototype['delete'] = listCacheDelete; + ListCache.prototype.get = listCacheGet; + ListCache.prototype.has = listCacheHas; + ListCache.prototype.set = listCacheSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a map cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function MapCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the map. + * + * @private + * @name clear + * @memberOf MapCache + */ + function mapCacheClear() { + this.size = 0; + this.__data__ = { + 'hash': new Hash, + 'map': new (Map || ListCache), + 'string': new Hash + }; + } + + /** + * Removes `key` and its value from the map. + * + * @private + * @name delete + * @memberOf MapCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function mapCacheDelete(key) { + var result = getMapData(this, key)['delete'](key); + this.size -= result ? 1 : 0; + return result; + } + + /** + * Gets the map value for `key`. + * + * @private + * @name get + * @memberOf MapCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function mapCacheGet(key) { + return getMapData(this, key).get(key); + } + + /** + * Checks if a map value for `key` exists. + * + * @private + * @name has + * @memberOf MapCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function mapCacheHas(key) { + return getMapData(this, key).has(key); + } + + /** + * Sets the map `key` to `value`. + * + * @private + * @name set + * @memberOf MapCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the map cache instance. + */ + function mapCacheSet(key, value) { + var data = getMapData(this, key), + size = data.size; + + data.set(key, value); + this.size += data.size == size ? 0 : 1; + return this; + } + + // Add methods to `MapCache`. + MapCache.prototype.clear = mapCacheClear; + MapCache.prototype['delete'] = mapCacheDelete; + MapCache.prototype.get = mapCacheGet; + MapCache.prototype.has = mapCacheHas; + MapCache.prototype.set = mapCacheSet; + + /*------------------------------------------------------------------------*/ + + /** + * + * Creates an array cache object to store unique values. + * + * @private + * @constructor + * @param {Array} [values] The values to cache. + */ + function SetCache(values) { + var index = -1, + length = values == null ? 0 : values.length; + + this.__data__ = new MapCache; + while (++index < length) { + this.add(values[index]); + } + } + + /** + * Adds `value` to the array cache. + * + * @private + * @name add + * @memberOf SetCache + * @alias push + * @param {*} value The value to cache. + * @returns {Object} Returns the cache instance. + */ + function setCacheAdd(value) { + this.__data__.set(value, HASH_UNDEFINED); + return this; + } + + /** + * Checks if `value` is in the array cache. + * + * @private + * @name has + * @memberOf SetCache + * @param {*} value The value to search for. + * @returns {number} Returns `true` if `value` is found, else `false`. + */ + function setCacheHas(value) { + return this.__data__.has(value); + } + + // Add methods to `SetCache`. + SetCache.prototype.add = SetCache.prototype.push = setCacheAdd; + SetCache.prototype.has = setCacheHas; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a stack cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Stack(entries) { + var data = this.__data__ = new ListCache(entries); + this.size = data.size; + } + + /** + * Removes all key-value entries from the stack. + * + * @private + * @name clear + * @memberOf Stack + */ + function stackClear() { + this.__data__ = new ListCache; + this.size = 0; + } + + /** + * Removes `key` and its value from the stack. + * + * @private + * @name delete + * @memberOf Stack + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function stackDelete(key) { + var data = this.__data__, + result = data['delete'](key); + + this.size = data.size; + return result; + } + + /** + * Gets the stack value for `key`. + * + * @private + * @name get + * @memberOf Stack + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function stackGet(key) { + return this.__data__.get(key); + } + + /** + * Checks if a stack value for `key` exists. + * + * @private + * @name has + * @memberOf Stack + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function stackHas(key) { + return this.__data__.has(key); + } + + /** + * Sets the stack `key` to `value`. + * + * @private + * @name set + * @memberOf Stack + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the stack cache instance. + */ + function stackSet(key, value) { + var data = this.__data__; + if (data instanceof ListCache) { + var pairs = data.__data__; + if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) { + pairs.push([key, value]); + this.size = ++data.size; + return this; + } + data = this.__data__ = new MapCache(pairs); + } + data.set(key, value); + this.size = data.size; + return this; + } + + // Add methods to `Stack`. + Stack.prototype.clear = stackClear; + Stack.prototype['delete'] = stackDelete; + Stack.prototype.get = stackGet; + Stack.prototype.has = stackHas; + Stack.prototype.set = stackSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates an array of the enumerable property names of the array-like `value`. + * + * @private + * @param {*} value The value to query. + * @param {boolean} inherited Specify returning inherited property names. + * @returns {Array} Returns the array of property names. + */ + function arrayLikeKeys(value, inherited) { + var isArr = isArray(value), + isArg = !isArr && isArguments(value), + isBuff = !isArr && !isArg && isBuffer(value), + isType = !isArr && !isArg && !isBuff && isTypedArray(value), + skipIndexes = isArr || isArg || isBuff || isType, + result = skipIndexes ? baseTimes(value.length, String) : [], + length = result.length; + + for (var key in value) { + if ((inherited || hasOwnProperty.call(value, key)) && + !(skipIndexes && ( + // Safari 9 has enumerable `arguments.length` in strict mode. + key == 'length' || + // Node.js 0.10 has enumerable non-index properties on buffers. + (isBuff && (key == 'offset' || key == 'parent')) || + // PhantomJS 2 has enumerable non-index properties on typed arrays. + (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) || + // Skip index properties. + isIndex(key, length) + ))) { + result.push(key); + } + } + return result; + } + + /** + * A specialized version of `_.sample` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @returns {*} Returns the random element. + */ + function arraySample(array) { + var length = array.length; + return length ? array[baseRandom(0, length - 1)] : undefined; + } + + /** + * A specialized version of `_.sampleSize` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function arraySampleSize(array, n) { + return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length)); + } + + /** + * A specialized version of `_.shuffle` for arrays. + * + * @private + * @param {Array} array The array to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function arrayShuffle(array) { + return shuffleSelf(copyArray(array)); + } + + /** + * This function is like `assignValue` except that it doesn't assign + * `undefined` values. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignMergeValue(object, key, value) { + if ((value !== undefined && !eq(object[key], value)) || + (value === undefined && !(key in object))) { + baseAssignValue(object, key, value); + } + } + + /** + * Assigns `value` to `key` of `object` if the existing value is not equivalent + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignValue(object, key, value) { + var objValue = object[key]; + if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || + (value === undefined && !(key in object))) { + baseAssignValue(object, key, value); + } + } + + /** + * Gets the index at which the `key` is found in `array` of key-value pairs. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} key The key to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function assocIndexOf(array, key) { + var length = array.length; + while (length--) { + if (eq(array[length][0], key)) { + return length; + } + } + return -1; + } + + /** + * Aggregates elements of `collection` on `accumulator` with keys transformed + * by `iteratee` and values set by `setter`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function baseAggregator(collection, setter, iteratee, accumulator) { + baseEach(collection, function(value, key, collection) { + setter(accumulator, value, iteratee(value), collection); + }); + return accumulator; + } + + /** + * The base implementation of `_.assign` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssign(object, source) { + return object && copyObject(source, keys(source), object); + } + + /** + * The base implementation of `_.assignIn` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssignIn(object, source) { + return object && copyObject(source, keysIn(source), object); + } + + /** + * The base implementation of `assignValue` and `assignMergeValue` without + * value checks. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function baseAssignValue(object, key, value) { + if (key == '__proto__' && defineProperty) { + defineProperty(object, key, { + 'configurable': true, + 'enumerable': true, + 'value': value, + 'writable': true + }); + } else { + object[key] = value; + } + } + + /** + * The base implementation of `_.at` without support for individual paths. + * + * @private + * @param {Object} object The object to iterate over. + * @param {string[]} paths The property paths to pick. + * @returns {Array} Returns the picked elements. + */ + function baseAt(object, paths) { + var index = -1, + length = paths.length, + result = Array(length), + skip = object == null; + + while (++index < length) { + result[index] = skip ? undefined : get(object, paths[index]); + } + return result; + } + + /** + * The base implementation of `_.clamp` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + */ + function baseClamp(number, lower, upper) { + if (number === number) { + if (upper !== undefined) { + number = number <= upper ? number : upper; + } + if (lower !== undefined) { + number = number >= lower ? number : lower; + } + } + return number; + } + + /** + * The base implementation of `_.clone` and `_.cloneDeep` which tracks + * traversed objects. + * + * @private + * @param {*} value The value to clone. + * @param {boolean} bitmask The bitmask flags. + * 1 - Deep clone + * 2 - Flatten inherited properties + * 4 - Clone symbols + * @param {Function} [customizer] The function to customize cloning. + * @param {string} [key] The key of `value`. + * @param {Object} [object] The parent object of `value`. + * @param {Object} [stack] Tracks traversed objects and their clone counterparts. + * @returns {*} Returns the cloned value. + */ + function baseClone(value, bitmask, customizer, key, object, stack) { + var result, + isDeep = bitmask & CLONE_DEEP_FLAG, + isFlat = bitmask & CLONE_FLAT_FLAG, + isFull = bitmask & CLONE_SYMBOLS_FLAG; + + if (customizer) { + result = object ? customizer(value, key, object, stack) : customizer(value); + } + if (result !== undefined) { + return result; + } + if (!isObject(value)) { + return value; + } + var isArr = isArray(value); + if (isArr) { + result = initCloneArray(value); + if (!isDeep) { + return copyArray(value, result); + } + } else { + var tag = getTag(value), + isFunc = tag == funcTag || tag == genTag; + + if (isBuffer(value)) { + return cloneBuffer(value, isDeep); + } + if (tag == objectTag || tag == argsTag || (isFunc && !object)) { + result = (isFlat || isFunc) ? {} : initCloneObject(value); + if (!isDeep) { + return isFlat + ? copySymbolsIn(value, baseAssignIn(result, value)) + : copySymbols(value, baseAssign(result, value)); + } + } else { + if (!cloneableTags[tag]) { + return object ? value : {}; + } + result = initCloneByTag(value, tag, isDeep); + } + } + // Check for circular references and return its corresponding clone. + stack || (stack = new Stack); + var stacked = stack.get(value); + if (stacked) { + return stacked; + } + stack.set(value, result); + + if (isSet(value)) { + value.forEach(function(subValue) { + result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack)); + }); + } else if (isMap(value)) { + value.forEach(function(subValue, key) { + result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); + } + + var keysFunc = isFull + ? (isFlat ? getAllKeysIn : getAllKeys) + : (isFlat ? keysIn : keys); + + var props = isArr ? undefined : keysFunc(value); + arrayEach(props || value, function(subValue, key) { + if (props) { + key = subValue; + subValue = value[key]; + } + // Recursively populate clone (susceptible to call stack limits). + assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); + return result; + } + + /** + * The base implementation of `_.conforms` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property predicates to conform to. + * @returns {Function} Returns the new spec function. + */ + function baseConforms(source) { + var props = keys(source); + return function(object) { + return baseConformsTo(object, source, props); + }; + } + + /** + * The base implementation of `_.conformsTo` which accepts `props` to check. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + */ + function baseConformsTo(object, source, props) { + var length = props.length; + if (object == null) { + return !length; + } + object = Object(object); + while (length--) { + var key = props[length], + predicate = source[key], + value = object[key]; + + if ((value === undefined && !(key in object)) || !predicate(value)) { + return false; + } + } + return true; + } + + /** + * The base implementation of `_.delay` and `_.defer` which accepts `args` + * to provide to `func`. + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {Array} args The arguments to provide to `func`. + * @returns {number|Object} Returns the timer id or timeout object. + */ + function baseDelay(func, wait, args) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return setTimeout(function() { func.apply(undefined, args); }, wait); + } + + /** + * The base implementation of methods like `_.difference` without support + * for excluding multiple arrays or iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Array} values The values to exclude. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + */ + function baseDifference(array, values, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + isCommon = true, + length = array.length, + result = [], + valuesLength = values.length; + + if (!length) { + return result; + } + if (iteratee) { + values = arrayMap(values, baseUnary(iteratee)); + } + if (comparator) { + includes = arrayIncludesWith; + isCommon = false; + } + else if (values.length >= LARGE_ARRAY_SIZE) { + includes = cacheHas; + isCommon = false; + values = new SetCache(values); + } + outer: + while (++index < length) { + var value = array[index], + computed = iteratee == null ? value : iteratee(value); + + value = (comparator || value !== 0) ? value : 0; + if (isCommon && computed === computed) { + var valuesIndex = valuesLength; + while (valuesIndex--) { + if (values[valuesIndex] === computed) { + continue outer; + } + } + result.push(value); + } + else if (!includes(values, computed, comparator)) { + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.forEach` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEach = createBaseEach(baseForOwn); + + /** + * The base implementation of `_.forEachRight` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEachRight = createBaseEach(baseForOwnRight, true); + + /** + * The base implementation of `_.every` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false` + */ + function baseEvery(collection, predicate) { + var result = true; + baseEach(collection, function(value, index, collection) { + result = !!predicate(value, index, collection); + return result; + }); + return result; + } + + /** + * The base implementation of methods like `_.max` and `_.min` which accepts a + * `comparator` to determine the extremum value. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The iteratee invoked per iteration. + * @param {Function} comparator The comparator used to compare values. + * @returns {*} Returns the extremum value. + */ + function baseExtremum(array, iteratee, comparator) { + var index = -1, + length = array.length; + + while (++index < length) { + var value = array[index], + current = iteratee(value); + + if (current != null && (computed === undefined + ? (current === current && !isSymbol(current)) + : comparator(current, computed) + )) { + var computed = current, + result = value; + } + } + return result; + } + + /** + * The base implementation of `_.fill` without an iteratee call guard. + * + * @private + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + */ + function baseFill(array, value, start, end) { + var length = array.length; + + start = toInteger(start); + if (start < 0) { + start = -start > length ? 0 : (length + start); + } + end = (end === undefined || end > length) ? length : toInteger(end); + if (end < 0) { + end += length; + } + end = start > end ? 0 : toLength(end); + while (start < end) { + array[start++] = value; + } + return array; + } + + /** + * The base implementation of `_.filter` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function baseFilter(collection, predicate) { + var result = []; + baseEach(collection, function(value, index, collection) { + if (predicate(value, index, collection)) { + result.push(value); + } + }); + return result; + } + + /** + * The base implementation of `_.flatten` with support for restricting flattening. + * + * @private + * @param {Array} array The array to flatten. + * @param {number} depth The maximum recursion depth. + * @param {boolean} [predicate=isFlattenable] The function invoked per iteration. + * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks. + * @param {Array} [result=[]] The initial result value. + * @returns {Array} Returns the new flattened array. + */ + function baseFlatten(array, depth, predicate, isStrict, result) { + var index = -1, + length = array.length; + + predicate || (predicate = isFlattenable); + result || (result = []); + + while (++index < length) { + var value = array[index]; + if (depth > 0 && predicate(value)) { + if (depth > 1) { + // Recursively flatten arrays (susceptible to call stack limits). + baseFlatten(value, depth - 1, predicate, isStrict, result); + } else { + arrayPush(result, value); + } + } else if (!isStrict) { + result[result.length] = value; + } + } + return result; + } + + /** + * The base implementation of `baseForOwn` which iterates over `object` + * properties returned by `keysFunc` and invokes `iteratee` for each property. + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseFor = createBaseFor(); + + /** + * This function is like `baseFor` except that it iterates over properties + * in the opposite order. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseForRight = createBaseFor(true); + + /** + * The base implementation of `_.forOwn` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwn(object, iteratee) { + return object && baseFor(object, iteratee, keys); + } + + /** + * The base implementation of `_.forOwnRight` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwnRight(object, iteratee) { + return object && baseForRight(object, iteratee, keys); + } + + /** + * The base implementation of `_.functions` which creates an array of + * `object` function property names filtered from `props`. + * + * @private + * @param {Object} object The object to inspect. + * @param {Array} props The property names to filter. + * @returns {Array} Returns the function names. + */ + function baseFunctions(object, props) { + return arrayFilter(props, function(key) { + return isFunction(object[key]); + }); + } + + /** + * The base implementation of `_.get` without support for default values. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @returns {*} Returns the resolved value. + */ + function baseGet(object, path) { + path = castPath(path, object); + + var index = 0, + length = path.length; + + while (object != null && index < length) { + object = object[toKey(path[index++])]; + } + return (index && index == length) ? object : undefined; + } + + /** + * The base implementation of `getAllKeys` and `getAllKeysIn` which uses + * `keysFunc` and `symbolsFunc` to get the enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Function} keysFunc The function to get the keys of `object`. + * @param {Function} symbolsFunc The function to get the symbols of `object`. + * @returns {Array} Returns the array of property names and symbols. + */ + function baseGetAllKeys(object, keysFunc, symbolsFunc) { + var result = keysFunc(object); + return isArray(object) ? result : arrayPush(result, symbolsFunc(object)); + } + + /** + * The base implementation of `getTag` without fallbacks for buggy environments. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + function baseGetTag(value) { + if (value == null) { + return value === undefined ? undefinedTag : nullTag; + } + return (symToStringTag && symToStringTag in Object(value)) + ? getRawTag(value) + : objectToString(value); + } + + /** + * The base implementation of `_.gt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + */ + function baseGt(value, other) { + return value > other; + } + + /** + * The base implementation of `_.has` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHas(object, key) { + return object != null && hasOwnProperty.call(object, key); + } + + /** + * The base implementation of `_.hasIn` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHasIn(object, key) { + return object != null && key in Object(object); + } + + /** + * The base implementation of `_.inRange` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to check. + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + */ + function baseInRange(number, start, end) { + return number >= nativeMin(start, end) && number < nativeMax(start, end); + } + + /** + * The base implementation of methods like `_.intersection`, without support + * for iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of shared values. + */ + function baseIntersection(arrays, iteratee, comparator) { + var includes = comparator ? arrayIncludesWith : arrayIncludes, + length = arrays[0].length, + othLength = arrays.length, + othIndex = othLength, + caches = Array(othLength), + maxLength = Infinity, + result = []; + + while (othIndex--) { + var array = arrays[othIndex]; + if (othIndex && iteratee) { + array = arrayMap(array, baseUnary(iteratee)); + } + maxLength = nativeMin(array.length, maxLength); + caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120)) + ? new SetCache(othIndex && array) + : undefined; + } + array = arrays[0]; + + var index = -1, + seen = caches[0]; + + outer: + while (++index < length && result.length < maxLength) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + value = (comparator || value !== 0) ? value : 0; + if (!(seen + ? cacheHas(seen, computed) + : includes(result, computed, comparator) + )) { + othIndex = othLength; + while (--othIndex) { + var cache = caches[othIndex]; + if (!(cache + ? cacheHas(cache, computed) + : includes(arrays[othIndex], computed, comparator)) + ) { + continue outer; + } + } + if (seen) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.invert` and `_.invertBy` which inverts + * `object` with values transformed by `iteratee` and set by `setter`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform values. + * @param {Object} accumulator The initial inverted object. + * @returns {Function} Returns `accumulator`. + */ + function baseInverter(object, setter, iteratee, accumulator) { + baseForOwn(object, function(value, key, object) { + setter(accumulator, iteratee(value), key, object); + }); + return accumulator; + } + + /** + * The base implementation of `_.invoke` without support for individual + * method arguments. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {Array} args The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + */ + function baseInvoke(object, path, args) { + path = castPath(path, object); + object = parent(object, path); + var func = object == null ? object : object[toKey(last(path))]; + return func == null ? undefined : apply(func, object, args); + } + + /** + * The base implementation of `_.isArguments`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + */ + function baseIsArguments(value) { + return isObjectLike(value) && baseGetTag(value) == argsTag; + } + + /** + * The base implementation of `_.isArrayBuffer` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + */ + function baseIsArrayBuffer(value) { + return isObjectLike(value) && baseGetTag(value) == arrayBufferTag; + } + + /** + * The base implementation of `_.isDate` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + */ + function baseIsDate(value) { + return isObjectLike(value) && baseGetTag(value) == dateTag; + } + + /** + * The base implementation of `_.isEqual` which supports partial comparisons + * and tracks traversed objects. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {boolean} bitmask The bitmask flags. + * 1 - Unordered comparison + * 2 - Partial comparison + * @param {Function} [customizer] The function to customize comparisons. + * @param {Object} [stack] Tracks traversed `value` and `other` objects. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + */ + function baseIsEqual(value, other, bitmask, customizer, stack) { + if (value === other) { + return true; + } + if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) { + return value !== value && other !== other; + } + return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack); + } + + /** + * A specialized version of `baseIsEqual` for arrays and objects which performs + * deep comparisons and tracks traversed objects enabling objects with circular + * references to be compared. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} [stack] Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) { + var objIsArr = isArray(object), + othIsArr = isArray(other), + objTag = objIsArr ? arrayTag : getTag(object), + othTag = othIsArr ? arrayTag : getTag(other); + + objTag = objTag == argsTag ? objectTag : objTag; + othTag = othTag == argsTag ? objectTag : othTag; + + var objIsObj = objTag == objectTag, + othIsObj = othTag == objectTag, + isSameTag = objTag == othTag; + + if (isSameTag && isBuffer(object)) { + if (!isBuffer(other)) { + return false; + } + objIsArr = true; + objIsObj = false; + } + if (isSameTag && !objIsObj) { + stack || (stack = new Stack); + return (objIsArr || isTypedArray(object)) + ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) + : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack); + } + if (!(bitmask & COMPARE_PARTIAL_FLAG)) { + var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), + othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); + + if (objIsWrapped || othIsWrapped) { + var objUnwrapped = objIsWrapped ? object.value() : object, + othUnwrapped = othIsWrapped ? other.value() : other; + + stack || (stack = new Stack); + return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack); + } + } + if (!isSameTag) { + return false; + } + stack || (stack = new Stack); + return equalObjects(object, other, bitmask, customizer, equalFunc, stack); + } + + /** + * The base implementation of `_.isMap` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + */ + function baseIsMap(value) { + return isObjectLike(value) && getTag(value) == mapTag; + } + + /** + * The base implementation of `_.isMatch` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Array} matchData The property names, values, and compare flags to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + */ + function baseIsMatch(object, source, matchData, customizer) { + var index = matchData.length, + length = index, + noCustomizer = !customizer; + + if (object == null) { + return !length; + } + object = Object(object); + while (index--) { + var data = matchData[index]; + if ((noCustomizer && data[2]) + ? data[1] !== object[data[0]] + : !(data[0] in object) + ) { + return false; + } + } + while (++index < length) { + data = matchData[index]; + var key = data[0], + objValue = object[key], + srcValue = data[1]; + + if (noCustomizer && data[2]) { + if (objValue === undefined && !(key in object)) { + return false; + } + } else { + var stack = new Stack; + if (customizer) { + var result = customizer(objValue, srcValue, key, object, source, stack); + } + if (!(result === undefined + ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) + : result + )) { + return false; + } + } + } + return true; + } + + /** + * The base implementation of `_.isNative` without bad shim checks. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + */ + function baseIsNative(value) { + if (!isObject(value) || isMasked(value)) { + return false; + } + var pattern = isFunction(value) ? reIsNative : reIsHostCtor; + return pattern.test(toSource(value)); + } + + /** + * The base implementation of `_.isRegExp` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + */ + function baseIsRegExp(value) { + return isObjectLike(value) && baseGetTag(value) == regexpTag; + } + + /** + * The base implementation of `_.isSet` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + */ + function baseIsSet(value) { + return isObjectLike(value) && getTag(value) == setTag; + } + + /** + * The base implementation of `_.isTypedArray` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + */ + function baseIsTypedArray(value) { + return isObjectLike(value) && + isLength(value.length) && !!typedArrayTags[baseGetTag(value)]; + } + + /** + * The base implementation of `_.iteratee`. + * + * @private + * @param {*} [value=_.identity] The value to convert to an iteratee. + * @returns {Function} Returns the iteratee. + */ + function baseIteratee(value) { + // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9. + // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details. + if (typeof value == 'function') { + return value; + } + if (value == null) { + return identity; + } + if (typeof value == 'object') { + return isArray(value) + ? baseMatchesProperty(value[0], value[1]) + : baseMatches(value); + } + return property(value); + } + + /** + * The base implementation of `_.keys` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeys(object) { + if (!isPrototype(object)) { + return nativeKeys(object); + } + var result = []; + for (var key in Object(object)) { + if (hasOwnProperty.call(object, key) && key != 'constructor') { + result.push(key); + } + } + return result; + } + + /** + * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeysIn(object) { + if (!isObject(object)) { + return nativeKeysIn(object); + } + var isProto = isPrototype(object), + result = []; + + for (var key in object) { + if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { + result.push(key); + } + } + return result; + } + + /** + * The base implementation of `_.lt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + */ + function baseLt(value, other) { + return value < other; + } + + /** + * The base implementation of `_.map` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function baseMap(collection, iteratee) { + var index = -1, + result = isArrayLike(collection) ? Array(collection.length) : []; + + baseEach(collection, function(value, key, collection) { + result[++index] = iteratee(value, key, collection); + }); + return result; + } + + /** + * The base implementation of `_.matches` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property values to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatches(source) { + var matchData = getMatchData(source); + if (matchData.length == 1 && matchData[0][2]) { + return matchesStrictComparable(matchData[0][0], matchData[0][1]); + } + return function(object) { + return object === source || baseIsMatch(object, source, matchData); + }; + } + + /** + * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`. + * + * @private + * @param {string} path The path of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatchesProperty(path, srcValue) { + if (isKey(path) && isStrictComparable(srcValue)) { + return matchesStrictComparable(toKey(path), srcValue); + } + return function(object) { + var objValue = get(object, path); + return (objValue === undefined && objValue === srcValue) + ? hasIn(object, path) + : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG); + }; + } + + /** + * The base implementation of `_.merge` without support for multiple sources. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {number} srcIndex The index of `source`. + * @param {Function} [customizer] The function to customize merged values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMerge(object, source, srcIndex, customizer, stack) { + if (object === source) { + return; + } + baseFor(source, function(srcValue, key) { + stack || (stack = new Stack); + if (isObject(srcValue)) { + baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack); + } + else { + var newValue = customizer + ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack) + : undefined; + + if (newValue === undefined) { + newValue = srcValue; + } + assignMergeValue(object, key, newValue); + } + }, keysIn); + } + + /** + * A specialized version of `baseMerge` for arrays and objects which performs + * deep merges and tracks traversed objects enabling objects with circular + * references to be merged. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {string} key The key of the value to merge. + * @param {number} srcIndex The index of `source`. + * @param {Function} mergeFunc The function to merge values. + * @param {Function} [customizer] The function to customize assigned values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) { + var objValue = safeGet(object, key), + srcValue = safeGet(source, key), + stacked = stack.get(srcValue); + + if (stacked) { + assignMergeValue(object, key, stacked); + return; + } + var newValue = customizer + ? customizer(objValue, srcValue, (key + ''), object, source, stack) + : undefined; + + var isCommon = newValue === undefined; + + if (isCommon) { + var isArr = isArray(srcValue), + isBuff = !isArr && isBuffer(srcValue), + isTyped = !isArr && !isBuff && isTypedArray(srcValue); + + newValue = srcValue; + if (isArr || isBuff || isTyped) { + if (isArray(objValue)) { + newValue = objValue; + } + else if (isArrayLikeObject(objValue)) { + newValue = copyArray(objValue); + } + else if (isBuff) { + isCommon = false; + newValue = cloneBuffer(srcValue, true); + } + else if (isTyped) { + isCommon = false; + newValue = cloneTypedArray(srcValue, true); + } + else { + newValue = []; + } + } + else if (isPlainObject(srcValue) || isArguments(srcValue)) { + newValue = objValue; + if (isArguments(objValue)) { + newValue = toPlainObject(objValue); + } + else if (!isObject(objValue) || isFunction(objValue)) { + newValue = initCloneObject(srcValue); + } + } + else { + isCommon = false; + } + } + if (isCommon) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, newValue); + mergeFunc(newValue, srcValue, srcIndex, customizer, stack); + stack['delete'](srcValue); + } + assignMergeValue(object, key, newValue); + } + + /** + * The base implementation of `_.nth` which doesn't coerce arguments. + * + * @private + * @param {Array} array The array to query. + * @param {number} n The index of the element to return. + * @returns {*} Returns the nth element of `array`. + */ + function baseNth(array, n) { + var length = array.length; + if (!length) { + return; + } + n += n < 0 ? length : 0; + return isIndex(n, length) ? array[n] : undefined; + } + + /** + * The base implementation of `_.orderBy` without param guards. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. + * @param {string[]} orders The sort orders of `iteratees`. + * @returns {Array} Returns the new sorted array. + */ + function baseOrderBy(collection, iteratees, orders) { + var index = -1; + iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee())); + + var result = baseMap(collection, function(value, key, collection) { + var criteria = arrayMap(iteratees, function(iteratee) { + return iteratee(value); + }); + return { 'criteria': criteria, 'index': ++index, 'value': value }; + }); + + return baseSortBy(result, function(object, other) { + return compareMultiple(object, other, orders); + }); + } + + /** + * The base implementation of `_.pick` without support for individual + * property identifiers. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @returns {Object} Returns the new object. + */ + function basePick(object, paths) { + return basePickBy(object, paths, function(value, path) { + return hasIn(object, path); + }); + } + + /** + * The base implementation of `_.pickBy` without support for iteratee shorthands. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @param {Function} predicate The function invoked per property. + * @returns {Object} Returns the new object. + */ + function basePickBy(object, paths, predicate) { + var index = -1, + length = paths.length, + result = {}; + + while (++index < length) { + var path = paths[index], + value = baseGet(object, path); + + if (predicate(value, path)) { + baseSet(result, castPath(path, object), value); + } + } + return result; + } + + /** + * A specialized version of `baseProperty` which supports deep paths. + * + * @private + * @param {Array|string} path The path of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyDeep(path) { + return function(object) { + return baseGet(object, path); + }; + } + + /** + * The base implementation of `_.pullAllBy` without support for iteratee + * shorthands. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + */ + function basePullAll(array, values, iteratee, comparator) { + var indexOf = comparator ? baseIndexOfWith : baseIndexOf, + index = -1, + length = values.length, + seen = array; + + if (array === values) { + values = copyArray(values); + } + if (iteratee) { + seen = arrayMap(array, baseUnary(iteratee)); + } + while (++index < length) { + var fromIndex = 0, + value = values[index], + computed = iteratee ? iteratee(value) : value; + + while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) { + if (seen !== array) { + splice.call(seen, fromIndex, 1); + } + splice.call(array, fromIndex, 1); + } + } + return array; + } + + /** + * The base implementation of `_.pullAt` without support for individual + * indexes or capturing the removed elements. + * + * @private + * @param {Array} array The array to modify. + * @param {number[]} indexes The indexes of elements to remove. + * @returns {Array} Returns `array`. + */ + function basePullAt(array, indexes) { + var length = array ? indexes.length : 0, + lastIndex = length - 1; + + while (length--) { + var index = indexes[length]; + if (length == lastIndex || index !== previous) { + var previous = index; + if (isIndex(index)) { + splice.call(array, index, 1); + } else { + baseUnset(array, index); + } + } + } + return array; + } + + /** + * The base implementation of `_.random` without support for returning + * floating-point numbers. + * + * @private + * @param {number} lower The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the random number. + */ + function baseRandom(lower, upper) { + return lower + nativeFloor(nativeRandom() * (upper - lower + 1)); + } + + /** + * The base implementation of `_.range` and `_.rangeRight` which doesn't + * coerce arguments. + * + * @private + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @param {number} step The value to increment or decrement by. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the range of numbers. + */ + function baseRange(start, end, step, fromRight) { + var index = -1, + length = nativeMax(nativeCeil((end - start) / (step || 1)), 0), + result = Array(length); + + while (length--) { + result[fromRight ? length : ++index] = start; + start += step; + } + return result; + } + + /** + * The base implementation of `_.repeat` which doesn't coerce arguments. + * + * @private + * @param {string} string The string to repeat. + * @param {number} n The number of times to repeat the string. + * @returns {string} Returns the repeated string. + */ + function baseRepeat(string, n) { + var result = ''; + if (!string || n < 1 || n > MAX_SAFE_INTEGER) { + return result; + } + // Leverage the exponentiation by squaring algorithm for a faster repeat. + // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. + do { + if (n % 2) { + result += string; + } + n = nativeFloor(n / 2); + if (n) { + string += string; + } + } while (n); + + return result; + } + + /** + * The base implementation of `_.rest` which doesn't validate or coerce arguments. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + */ + function baseRest(func, start) { + return setToString(overRest(func, start, identity), func + ''); + } + + /** + * The base implementation of `_.sample`. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + */ + function baseSample(collection) { + return arraySample(values(collection)); + } + + /** + * The base implementation of `_.sampleSize` without param guards. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function baseSampleSize(collection, n) { + var array = values(collection); + return shuffleSelf(array, baseClamp(n, 0, array.length)); + } + + /** + * The base implementation of `_.set`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseSet(object, path, value, customizer) { + if (!isObject(object)) { + return object; + } + path = castPath(path, object); + + var index = -1, + length = path.length, + lastIndex = length - 1, + nested = object; + + while (nested != null && ++index < length) { + var key = toKey(path[index]), + newValue = value; + + if (index != lastIndex) { + var objValue = nested[key]; + newValue = customizer ? customizer(objValue, key, nested) : undefined; + if (newValue === undefined) { + newValue = isObject(objValue) + ? objValue + : (isIndex(path[index + 1]) ? [] : {}); + } + } + assignValue(nested, key, newValue); + nested = nested[key]; + } + return object; + } + + /** + * The base implementation of `setData` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var baseSetData = !metaMap ? identity : function(func, data) { + metaMap.set(func, data); + return func; + }; + + /** + * The base implementation of `setToString` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var baseSetToString = !defineProperty ? identity : function(func, string) { + return defineProperty(func, 'toString', { + 'configurable': true, + 'enumerable': false, + 'value': constant(string), + 'writable': true + }); + }; + + /** + * The base implementation of `_.shuffle`. + * + * @private + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function baseShuffle(collection) { + return shuffleSelf(values(collection)); + } + + /** + * The base implementation of `_.slice` without an iteratee call guard. + * + * @private + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function baseSlice(array, start, end) { + var index = -1, + length = array.length; + + if (start < 0) { + start = -start > length ? 0 : (length + start); + } + end = end > length ? length : end; + if (end < 0) { + end += length; + } + length = start > end ? 0 : ((end - start) >>> 0); + start >>>= 0; + + var result = Array(length); + while (++index < length) { + result[index] = array[index + start]; + } + return result; + } + + /** + * The base implementation of `_.some` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function baseSome(collection, predicate) { + var result; + + baseEach(collection, function(value, index, collection) { + result = predicate(value, index, collection); + return !result; + }); + return !!result; + } + + /** + * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which + * performs a binary search of `array` to determine the index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndex(array, value, retHighest) { + var low = 0, + high = array == null ? low : array.length; + + if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { + while (low < high) { + var mid = (low + high) >>> 1, + computed = array[mid]; + + if (computed !== null && !isSymbol(computed) && + (retHighest ? (computed <= value) : (computed < value))) { + low = mid + 1; + } else { + high = mid; + } + } + return high; + } + return baseSortedIndexBy(array, value, identity, retHighest); + } + + /** + * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy` + * which invokes `iteratee` for `value` and each element of `array` to compute + * their sort ranking. The iteratee is invoked with one argument; (value). + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} iteratee The iteratee invoked per element. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndexBy(array, value, iteratee, retHighest) { + value = iteratee(value); + + var low = 0, + high = array == null ? 0 : array.length, + valIsNaN = value !== value, + valIsNull = value === null, + valIsSymbol = isSymbol(value), + valIsUndefined = value === undefined; + + while (low < high) { + var mid = nativeFloor((low + high) / 2), + computed = iteratee(array[mid]), + othIsDefined = computed !== undefined, + othIsNull = computed === null, + othIsReflexive = computed === computed, + othIsSymbol = isSymbol(computed); + + if (valIsNaN) { + var setLow = retHighest || othIsReflexive; + } else if (valIsUndefined) { + setLow = othIsReflexive && (retHighest || othIsDefined); + } else if (valIsNull) { + setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull); + } else if (valIsSymbol) { + setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol); + } else if (othIsNull || othIsSymbol) { + setLow = false; + } else { + setLow = retHighest ? (computed <= value) : (computed < value); + } + if (setLow) { + low = mid + 1; + } else { + high = mid; + } + } + return nativeMin(high, MAX_ARRAY_INDEX); + } + + /** + * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseSortedUniq(array, iteratee) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + if (!index || !eq(computed, seen)) { + var seen = computed; + result[resIndex++] = value === 0 ? 0 : value; + } + } + return result; + } + + /** + * The base implementation of `_.toNumber` which doesn't ensure correct + * conversions of binary, hexadecimal, or octal string values. + * + * @private + * @param {*} value The value to process. + * @returns {number} Returns the number. + */ + function baseToNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + return +value; + } + + /** + * The base implementation of `_.toString` which doesn't convert nullish + * values to empty strings. + * + * @private + * @param {*} value The value to process. + * @returns {string} Returns the string. + */ + function baseToString(value) { + // Exit early for strings to avoid a performance hit in some environments. + if (typeof value == 'string') { + return value; + } + if (isArray(value)) { + // Recursively convert values (susceptible to call stack limits). + return arrayMap(value, baseToString) + ''; + } + if (isSymbol(value)) { + return symbolToString ? symbolToString.call(value) : ''; + } + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; + } + + /** + * The base implementation of `_.uniqBy` without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseUniq(array, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + length = array.length, + isCommon = true, + result = [], + seen = result; + + if (comparator) { + isCommon = false; + includes = arrayIncludesWith; + } + else if (length >= LARGE_ARRAY_SIZE) { + var set = iteratee ? null : createSet(array); + if (set) { + return setToArray(set); + } + isCommon = false; + includes = cacheHas; + seen = new SetCache; + } + else { + seen = iteratee ? [] : result; + } + outer: + while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + value = (comparator || value !== 0) ? value : 0; + if (isCommon && computed === computed) { + var seenIndex = seen.length; + while (seenIndex--) { + if (seen[seenIndex] === computed) { + continue outer; + } + } + if (iteratee) { + seen.push(computed); + } + result.push(value); + } + else if (!includes(seen, computed, comparator)) { + if (seen !== result) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.unset`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The property path to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + */ + function baseUnset(object, path) { + path = castPath(path, object); + object = parent(object, path); + return object == null || delete object[toKey(last(path))]; + } + + /** + * The base implementation of `_.update`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to update. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseUpdate(object, path, updater, customizer) { + return baseSet(object, path, updater(baseGet(object, path)), customizer); + } + + /** + * The base implementation of methods like `_.dropWhile` and `_.takeWhile` + * without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to query. + * @param {Function} predicate The function invoked per iteration. + * @param {boolean} [isDrop] Specify dropping elements instead of taking them. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the slice of `array`. + */ + function baseWhile(array, predicate, isDrop, fromRight) { + var length = array.length, + index = fromRight ? length : -1; + + while ((fromRight ? index-- : ++index < length) && + predicate(array[index], index, array)) {} + + return isDrop + ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length)) + : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index)); + } + + /** + * The base implementation of `wrapperValue` which returns the result of + * performing a sequence of actions on the unwrapped `value`, where each + * successive action is supplied the return value of the previous. + * + * @private + * @param {*} value The unwrapped value. + * @param {Array} actions Actions to perform to resolve the unwrapped value. + * @returns {*} Returns the resolved value. + */ + function baseWrapperValue(value, actions) { + var result = value; + if (result instanceof LazyWrapper) { + result = result.value(); + } + return arrayReduce(actions, function(result, action) { + return action.func.apply(action.thisArg, arrayPush([result], action.args)); + }, result); + } + + /** + * The base implementation of methods like `_.xor`, without support for + * iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of values. + */ + function baseXor(arrays, iteratee, comparator) { + var length = arrays.length; + if (length < 2) { + return length ? baseUniq(arrays[0]) : []; + } + var index = -1, + result = Array(length); + + while (++index < length) { + var array = arrays[index], + othIndex = -1; + + while (++othIndex < length) { + if (othIndex != index) { + result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator); + } + } + } + return baseUniq(baseFlatten(result, 1), iteratee, comparator); + } + + /** + * This base implementation of `_.zipObject` which assigns values using `assignFunc`. + * + * @private + * @param {Array} props The property identifiers. + * @param {Array} values The property values. + * @param {Function} assignFunc The function to assign values. + * @returns {Object} Returns the new object. + */ + function baseZipObject(props, values, assignFunc) { + var index = -1, + length = props.length, + valsLength = values.length, + result = {}; + + while (++index < length) { + var value = index < valsLength ? values[index] : undefined; + assignFunc(result, props[index], value); + } + return result; + } + + /** + * Casts `value` to an empty array if it's not an array like object. + * + * @private + * @param {*} value The value to inspect. + * @returns {Array|Object} Returns the cast array-like object. + */ + function castArrayLikeObject(value) { + return isArrayLikeObject(value) ? value : []; + } + + /** + * Casts `value` to `identity` if it's not a function. + * + * @private + * @param {*} value The value to inspect. + * @returns {Function} Returns cast function. + */ + function castFunction(value) { + return typeof value == 'function' ? value : identity; + } + + /** + * Casts `value` to a path array if it's not one. + * + * @private + * @param {*} value The value to inspect. + * @param {Object} [object] The object to query keys on. + * @returns {Array} Returns the cast property path array. + */ + function castPath(value, object) { + if (isArray(value)) { + return value; + } + return isKey(value, object) ? [value] : stringToPath(toString(value)); + } + + /** + * A `baseRest` alias which can be replaced with `identity` by module + * replacement plugins. + * + * @private + * @type {Function} + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + var castRest = baseRest; + + /** + * Casts `array` to a slice if it's needed. + * + * @private + * @param {Array} array The array to inspect. + * @param {number} start The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the cast slice. + */ + function castSlice(array, start, end) { + var length = array.length; + end = end === undefined ? length : end; + return (!start && end >= length) ? array : baseSlice(array, start, end); + } + + /** + * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout). + * + * @private + * @param {number|Object} id The timer id or timeout object of the timer to clear. + */ + var clearTimeout = ctxClearTimeout || function(id) { + return root.clearTimeout(id); + }; + + /** + * Creates a clone of `buffer`. + * + * @private + * @param {Buffer} buffer The buffer to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Buffer} Returns the cloned buffer. + */ + function cloneBuffer(buffer, isDeep) { + if (isDeep) { + return buffer.slice(); + } + var length = buffer.length, + result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length); + + buffer.copy(result); + return result; + } + + /** + * Creates a clone of `arrayBuffer`. + * + * @private + * @param {ArrayBuffer} arrayBuffer The array buffer to clone. + * @returns {ArrayBuffer} Returns the cloned array buffer. + */ + function cloneArrayBuffer(arrayBuffer) { + var result = new arrayBuffer.constructor(arrayBuffer.byteLength); + new Uint8Array(result).set(new Uint8Array(arrayBuffer)); + return result; + } + + /** + * Creates a clone of `dataView`. + * + * @private + * @param {Object} dataView The data view to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned data view. + */ + function cloneDataView(dataView, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer; + return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength); + } + + /** + * Creates a clone of `regexp`. + * + * @private + * @param {Object} regexp The regexp to clone. + * @returns {Object} Returns the cloned regexp. + */ + function cloneRegExp(regexp) { + var result = new regexp.constructor(regexp.source, reFlags.exec(regexp)); + result.lastIndex = regexp.lastIndex; + return result; + } + + /** + * Creates a clone of the `symbol` object. + * + * @private + * @param {Object} symbol The symbol object to clone. + * @returns {Object} Returns the cloned symbol object. + */ + function cloneSymbol(symbol) { + return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {}; + } + + /** + * Creates a clone of `typedArray`. + * + * @private + * @param {Object} typedArray The typed array to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned typed array. + */ + function cloneTypedArray(typedArray, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer; + return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length); + } + + /** + * Compares values to sort them in ascending order. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {number} Returns the sort order indicator for `value`. + */ + function compareAscending(value, other) { + if (value !== other) { + var valIsDefined = value !== undefined, + valIsNull = value === null, + valIsReflexive = value === value, + valIsSymbol = isSymbol(value); + + var othIsDefined = other !== undefined, + othIsNull = other === null, + othIsReflexive = other === other, + othIsSymbol = isSymbol(other); + + if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) || + (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) || + (valIsNull && othIsDefined && othIsReflexive) || + (!valIsDefined && othIsReflexive) || + !valIsReflexive) { + return 1; + } + if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) || + (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) || + (othIsNull && valIsDefined && valIsReflexive) || + (!othIsDefined && valIsReflexive) || + !othIsReflexive) { + return -1; + } + } + return 0; + } + + /** + * Used by `_.orderBy` to compare multiple properties of a value to another + * and stable sort them. + * + * If `orders` is unspecified, all values are sorted in ascending order. Otherwise, + * specify an order of "desc" for descending or "asc" for ascending sort order + * of corresponding values. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {boolean[]|string[]} orders The order to sort by for each property. + * @returns {number} Returns the sort order indicator for `object`. + */ + function compareMultiple(object, other, orders) { + var index = -1, + objCriteria = object.criteria, + othCriteria = other.criteria, + length = objCriteria.length, + ordersLength = orders.length; + + while (++index < length) { + var result = compareAscending(objCriteria[index], othCriteria[index]); + if (result) { + if (index >= ordersLength) { + return result; + } + var order = orders[index]; + return result * (order == 'desc' ? -1 : 1); + } + } + // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications + // that causes it, under certain circumstances, to provide the same value for + // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247 + // for more details. + // + // This also ensures a stable sort in V8 and other engines. + // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details. + return object.index - other.index; + } + + /** + * Creates an array that is the composition of partially applied arguments, + * placeholders, and provided arguments into a single array of arguments. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to prepend to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgs(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersLength = holders.length, + leftIndex = -1, + leftLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(leftLength + rangeLength), + isUncurried = !isCurried; + + while (++leftIndex < leftLength) { + result[leftIndex] = partials[leftIndex]; + } + while (++argsIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[holders[argsIndex]] = args[argsIndex]; + } + } + while (rangeLength--) { + result[leftIndex++] = args[argsIndex++]; + } + return result; + } + + /** + * This function is like `composeArgs` except that the arguments composition + * is tailored for `_.partialRight`. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to append to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgsRight(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersIndex = -1, + holdersLength = holders.length, + rightIndex = -1, + rightLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(rangeLength + rightLength), + isUncurried = !isCurried; + + while (++argsIndex < rangeLength) { + result[argsIndex] = args[argsIndex]; + } + var offset = argsIndex; + while (++rightIndex < rightLength) { + result[offset + rightIndex] = partials[rightIndex]; + } + while (++holdersIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[offset + holders[holdersIndex]] = args[argsIndex++]; + } + } + return result; + } + + /** + * Copies the values of `source` to `array`. + * + * @private + * @param {Array} source The array to copy values from. + * @param {Array} [array=[]] The array to copy values to. + * @returns {Array} Returns `array`. + */ + function copyArray(source, array) { + var index = -1, + length = source.length; + + array || (array = Array(length)); + while (++index < length) { + array[index] = source[index]; + } + return array; + } + + /** + * Copies properties of `source` to `object`. + * + * @private + * @param {Object} source The object to copy properties from. + * @param {Array} props The property identifiers to copy. + * @param {Object} [object={}] The object to copy properties to. + * @param {Function} [customizer] The function to customize copied values. + * @returns {Object} Returns `object`. + */ + function copyObject(source, props, object, customizer) { + var isNew = !object; + object || (object = {}); + + var index = -1, + length = props.length; + + while (++index < length) { + var key = props[index]; + + var newValue = customizer + ? customizer(object[key], source[key], key, object, source) + : undefined; + + if (newValue === undefined) { + newValue = source[key]; + } + if (isNew) { + baseAssignValue(object, key, newValue); + } else { + assignValue(object, key, newValue); + } + } + return object; + } + + /** + * Copies own symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbols(source, object) { + return copyObject(source, getSymbols(source), object); + } + + /** + * Copies own and inherited symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbolsIn(source, object) { + return copyObject(source, getSymbolsIn(source), object); + } + + /** + * Creates a function like `_.groupBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} [initializer] The accumulator object initializer. + * @returns {Function} Returns the new aggregator function. + */ + function createAggregator(setter, initializer) { + return function(collection, iteratee) { + var func = isArray(collection) ? arrayAggregator : baseAggregator, + accumulator = initializer ? initializer() : {}; + + return func(collection, setter, getIteratee(iteratee, 2), accumulator); + }; + } + + /** + * Creates a function like `_.assign`. + * + * @private + * @param {Function} assigner The function to assign values. + * @returns {Function} Returns the new assigner function. + */ + function createAssigner(assigner) { + return baseRest(function(object, sources) { + var index = -1, + length = sources.length, + customizer = length > 1 ? sources[length - 1] : undefined, + guard = length > 2 ? sources[2] : undefined; + + customizer = (assigner.length > 3 && typeof customizer == 'function') + ? (length--, customizer) + : undefined; + + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + customizer = length < 3 ? undefined : customizer; + length = 1; + } + object = Object(object); + while (++index < length) { + var source = sources[index]; + if (source) { + assigner(object, source, index, customizer); + } + } + return object; + }); + } + + /** + * Creates a `baseEach` or `baseEachRight` function. + * + * @private + * @param {Function} eachFunc The function to iterate over a collection. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseEach(eachFunc, fromRight) { + return function(collection, iteratee) { + if (collection == null) { + return collection; + } + if (!isArrayLike(collection)) { + return eachFunc(collection, iteratee); + } + var length = collection.length, + index = fromRight ? length : -1, + iterable = Object(collection); + + while ((fromRight ? index-- : ++index < length)) { + if (iteratee(iterable[index], index, iterable) === false) { + break; + } + } + return collection; + }; + } + + /** + * Creates a base function for methods like `_.forIn` and `_.forOwn`. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseFor(fromRight) { + return function(object, iteratee, keysFunc) { + var index = -1, + iterable = Object(object), + props = keysFunc(object), + length = props.length; + + while (length--) { + var key = props[fromRight ? length : ++index]; + if (iteratee(iterable[key], key, iterable) === false) { + break; + } + } + return object; + }; + } + + /** + * Creates a function that wraps `func` to invoke it with the optional `this` + * binding of `thisArg`. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createBind(func, bitmask, thisArg) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); + + function wrapper() { + var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + return fn.apply(isBind ? thisArg : this, arguments); + } + return wrapper; + } + + /** + * Creates a function like `_.lowerFirst`. + * + * @private + * @param {string} methodName The name of the `String` case method to use. + * @returns {Function} Returns the new case function. + */ + function createCaseFirst(methodName) { + return function(string) { + string = toString(string); + + var strSymbols = hasUnicode(string) + ? stringToArray(string) + : undefined; + + var chr = strSymbols + ? strSymbols[0] + : string.charAt(0); + + var trailing = strSymbols + ? castSlice(strSymbols, 1).join('') + : string.slice(1); + + return chr[methodName]() + trailing; + }; + } + + /** + * Creates a function like `_.camelCase`. + * + * @private + * @param {Function} callback The function to combine each word. + * @returns {Function} Returns the new compounder function. + */ + function createCompounder(callback) { + return function(string) { + return arrayReduce(words(deburr(string).replace(reApos, '')), callback, ''); + }; + } + + /** + * Creates a function that produces an instance of `Ctor` regardless of + * whether it was invoked as part of a `new` expression or by `call` or `apply`. + * + * @private + * @param {Function} Ctor The constructor to wrap. + * @returns {Function} Returns the new wrapped function. + */ + function createCtor(Ctor) { + return function() { + // Use a `switch` statement to work with class constructors. See + // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist + // for more details. + var args = arguments; + switch (args.length) { + case 0: return new Ctor; + case 1: return new Ctor(args[0]); + case 2: return new Ctor(args[0], args[1]); + case 3: return new Ctor(args[0], args[1], args[2]); + case 4: return new Ctor(args[0], args[1], args[2], args[3]); + case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]); + case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]); + case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]); + } + var thisBinding = baseCreate(Ctor.prototype), + result = Ctor.apply(thisBinding, args); + + // Mimic the constructor's `return` behavior. + // See https://es5.github.io/#x13.2.2 for more details. + return isObject(result) ? result : thisBinding; + }; + } + + /** + * Creates a function that wraps `func` to enable currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {number} arity The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createCurry(func, bitmask, arity) { + var Ctor = createCtor(func); + + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length, + placeholder = getHolder(wrapper); + + while (index--) { + args[index] = arguments[index]; + } + var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder) + ? [] + : replaceHolders(args, placeholder); + + length -= holders.length; + if (length < arity) { + return createRecurry( + func, bitmask, createHybrid, wrapper.placeholder, undefined, + args, holders, undefined, undefined, arity - length); + } + var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + return apply(fn, this, args); + } + return wrapper; + } + + /** + * Creates a `_.find` or `_.findLast` function. + * + * @private + * @param {Function} findIndexFunc The function to find the collection index. + * @returns {Function} Returns the new find function. + */ + function createFind(findIndexFunc) { + return function(collection, predicate, fromIndex) { + var iterable = Object(collection); + if (!isArrayLike(collection)) { + var iteratee = getIteratee(predicate, 3); + collection = keys(collection); + predicate = function(key) { return iteratee(iterable[key], key, iterable); }; + } + var index = findIndexFunc(collection, predicate, fromIndex); + return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined; + }; + } + + /** + * Creates a `_.flow` or `_.flowRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new flow function. + */ + function createFlow(fromRight) { + return flatRest(function(funcs) { + var length = funcs.length, + index = length, + prereq = LodashWrapper.prototype.thru; + + if (fromRight) { + funcs.reverse(); + } + while (index--) { + var func = funcs[index]; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (prereq && !wrapper && getFuncName(func) == 'wrapper') { + var wrapper = new LodashWrapper([], true); + } + } + index = wrapper ? index : length; + while (++index < length) { + func = funcs[index]; + + var funcName = getFuncName(func), + data = funcName == 'wrapper' ? getData(func) : undefined; + + if (data && isLaziable(data[0]) && + data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && + !data[4].length && data[9] == 1 + ) { + wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]); + } else { + wrapper = (func.length == 1 && isLaziable(func)) + ? wrapper[funcName]() + : wrapper.thru(func); + } + } + return function() { + var args = arguments, + value = args[0]; + + if (wrapper && args.length == 1 && isArray(value)) { + return wrapper.plant(value).value(); + } + var index = 0, + result = length ? funcs[index].apply(this, args) : value; + + while (++index < length) { + result = funcs[index].call(this, result); + } + return result; + }; + }); + } + + /** + * Creates a function that wraps `func` to invoke it with optional `this` + * binding of `thisArg`, partial application, and currying. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [partialsRight] The arguments to append to those provided + * to the new function. + * @param {Array} [holdersRight] The `partialsRight` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) { + var isAry = bitmask & WRAP_ARY_FLAG, + isBind = bitmask & WRAP_BIND_FLAG, + isBindKey = bitmask & WRAP_BIND_KEY_FLAG, + isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG), + isFlip = bitmask & WRAP_FLIP_FLAG, + Ctor = isBindKey ? undefined : createCtor(func); + + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length; + + while (index--) { + args[index] = arguments[index]; + } + if (isCurried) { + var placeholder = getHolder(wrapper), + holdersCount = countHolders(args, placeholder); + } + if (partials) { + args = composeArgs(args, partials, holders, isCurried); + } + if (partialsRight) { + args = composeArgsRight(args, partialsRight, holdersRight, isCurried); + } + length -= holdersCount; + if (isCurried && length < arity) { + var newHolders = replaceHolders(args, placeholder); + return createRecurry( + func, bitmask, createHybrid, wrapper.placeholder, thisArg, + args, newHolders, argPos, ary, arity - length + ); + } + var thisBinding = isBind ? thisArg : this, + fn = isBindKey ? thisBinding[func] : func; + + length = args.length; + if (argPos) { + args = reorder(args, argPos); + } else if (isFlip && length > 1) { + args.reverse(); + } + if (isAry && ary < length) { + args.length = ary; + } + if (this && this !== root && this instanceof wrapper) { + fn = Ctor || createCtor(fn); + } + return fn.apply(thisBinding, args); + } + return wrapper; + } + + /** + * Creates a function like `_.invertBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} toIteratee The function to resolve iteratees. + * @returns {Function} Returns the new inverter function. + */ + function createInverter(setter, toIteratee) { + return function(object, iteratee) { + return baseInverter(object, setter, toIteratee(iteratee), {}); + }; + } + + /** + * Creates a function that performs a mathematical operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @param {number} [defaultValue] The value used for `undefined` arguments. + * @returns {Function} Returns the new mathematical operation function. + */ + function createMathOperation(operator, defaultValue) { + return function(value, other) { + var result; + if (value === undefined && other === undefined) { + return defaultValue; + } + if (value !== undefined) { + result = value; + } + if (other !== undefined) { + if (result === undefined) { + return other; + } + if (typeof value == 'string' || typeof other == 'string') { + value = baseToString(value); + other = baseToString(other); + } else { + value = baseToNumber(value); + other = baseToNumber(other); + } + result = operator(value, other); + } + return result; + }; + } + + /** + * Creates a function like `_.over`. + * + * @private + * @param {Function} arrayFunc The function to iterate over iteratees. + * @returns {Function} Returns the new over function. + */ + function createOver(arrayFunc) { + return flatRest(function(iteratees) { + iteratees = arrayMap(iteratees, baseUnary(getIteratee())); + return baseRest(function(args) { + var thisArg = this; + return arrayFunc(iteratees, function(iteratee) { + return apply(iteratee, thisArg, args); + }); + }); + }); + } + + /** + * Creates the padding for `string` based on `length`. The `chars` string + * is truncated if the number of characters exceeds `length`. + * + * @private + * @param {number} length The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padding for `string`. + */ + function createPadding(length, chars) { + chars = chars === undefined ? ' ' : baseToString(chars); + + var charsLength = chars.length; + if (charsLength < 2) { + return charsLength ? baseRepeat(chars, length) : chars; + } + var result = baseRepeat(chars, nativeCeil(length / stringSize(chars))); + return hasUnicode(chars) + ? castSlice(stringToArray(result), 0, length).join('') + : result.slice(0, length); + } + + /** + * Creates a function that wraps `func` to invoke it with the `this` binding + * of `thisArg` and `partials` prepended to the arguments it receives. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} partials The arguments to prepend to those provided to + * the new function. + * @returns {Function} Returns the new wrapped function. + */ + function createPartial(func, bitmask, thisArg, partials) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); + + function wrapper() { + var argsIndex = -1, + argsLength = arguments.length, + leftIndex = -1, + leftLength = partials.length, + args = Array(leftLength + argsLength), + fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + + while (++leftIndex < leftLength) { + args[leftIndex] = partials[leftIndex]; + } + while (argsLength--) { + args[leftIndex++] = arguments[++argsIndex]; + } + return apply(fn, isBind ? thisArg : this, args); + } + return wrapper; + } + + /** + * Creates a `_.range` or `_.rangeRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new range function. + */ + function createRange(fromRight) { + return function(start, end, step) { + if (step && typeof step != 'number' && isIterateeCall(start, end, step)) { + end = step = undefined; + } + // Ensure the sign of `-0` is preserved. + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + step = step === undefined ? (start < end ? 1 : -1) : toFinite(step); + return baseRange(start, end, step, fromRight); + }; + } + + /** + * Creates a function that performs a relational operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @returns {Function} Returns the new relational operation function. + */ + function createRelationalOperation(operator) { + return function(value, other) { + if (!(typeof value == 'string' && typeof other == 'string')) { + value = toNumber(value); + other = toNumber(other); + } + return operator(value, other); + }; + } + + /** + * Creates a function that wraps `func` to continue currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {Function} wrapFunc The function to create the `func` wrapper. + * @param {*} placeholder The placeholder value. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) { + var isCurry = bitmask & WRAP_CURRY_FLAG, + newHolders = isCurry ? holders : undefined, + newHoldersRight = isCurry ? undefined : holders, + newPartials = isCurry ? partials : undefined, + newPartialsRight = isCurry ? undefined : partials; + + bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG); + bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG); + + if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) { + bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG); + } + var newData = [ + func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, + newHoldersRight, argPos, ary, arity + ]; + + var result = wrapFunc.apply(undefined, newData); + if (isLaziable(func)) { + setData(result, newData); + } + result.placeholder = placeholder; + return setWrapToString(result, func, bitmask); + } + + /** + * Creates a function like `_.round`. + * + * @private + * @param {string} methodName The name of the `Math` method to use when rounding. + * @returns {Function} Returns the new round function. + */ + function createRound(methodName) { + var func = Math[methodName]; + return function(number, precision) { + number = toNumber(number); + precision = precision == null ? 0 : nativeMin(toInteger(precision), 292); + if (precision && nativeIsFinite(number)) { + // Shift with exponential notation to avoid floating-point issues. + // See [MDN](https://mdn.io/round#Examples) for more details. + var pair = (toString(number) + 'e').split('e'), + value = func(pair[0] + 'e' + (+pair[1] + precision)); + + pair = (toString(value) + 'e').split('e'); + return +(pair[0] + 'e' + (+pair[1] - precision)); + } + return func(number); + }; + } + + /** + * Creates a set object of `values`. + * + * @private + * @param {Array} values The values to add to the set. + * @returns {Object} Returns the new set. + */ + var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) { + return new Set(values); + }; + + /** + * Creates a `_.toPairs` or `_.toPairsIn` function. + * + * @private + * @param {Function} keysFunc The function to get the keys of a given object. + * @returns {Function} Returns the new pairs function. + */ + function createToPairs(keysFunc) { + return function(object) { + var tag = getTag(object); + if (tag == mapTag) { + return mapToArray(object); + } + if (tag == setTag) { + return setToPairs(object); + } + return baseToPairs(object, keysFunc(object)); + }; + } + + /** + * Creates a function that either curries or invokes `func` with optional + * `this` binding and partially applied arguments. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. + * 1 - `_.bind` + * 2 - `_.bindKey` + * 4 - `_.curry` or `_.curryRight` of a bound function + * 8 - `_.curry` + * 16 - `_.curryRight` + * 32 - `_.partial` + * 64 - `_.partialRight` + * 128 - `_.rearg` + * 256 - `_.ary` + * 512 - `_.flip` + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to be partially applied. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) { + var isBindKey = bitmask & WRAP_BIND_KEY_FLAG; + if (!isBindKey && typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + var length = partials ? partials.length : 0; + if (!length) { + bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG); + partials = holders = undefined; + } + ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0); + arity = arity === undefined ? arity : toInteger(arity); + length -= holders ? holders.length : 0; + + if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) { + var partialsRight = partials, + holdersRight = holders; + + partials = holders = undefined; + } + var data = isBindKey ? undefined : getData(func); + + var newData = [ + func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, + argPos, ary, arity + ]; + + if (data) { + mergeData(newData, data); + } + func = newData[0]; + bitmask = newData[1]; + thisArg = newData[2]; + partials = newData[3]; + holders = newData[4]; + arity = newData[9] = newData[9] === undefined + ? (isBindKey ? 0 : func.length) + : nativeMax(newData[9] - length, 0); + + if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) { + bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG); + } + if (!bitmask || bitmask == WRAP_BIND_FLAG) { + var result = createBind(func, bitmask, thisArg); + } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) { + result = createCurry(func, bitmask, arity); + } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) { + result = createPartial(func, bitmask, thisArg, partials); + } else { + result = createHybrid.apply(undefined, newData); + } + var setter = data ? baseSetData : setData; + return setWrapToString(setter(result, newData), func, bitmask); + } + + /** + * Used by `_.defaults` to customize its `_.assignIn` use to assign properties + * of source objects to the destination object for all destination properties + * that resolve to `undefined`. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to assign. + * @param {Object} object The parent object of `objValue`. + * @returns {*} Returns the value to assign. + */ + function customDefaultsAssignIn(objValue, srcValue, key, object) { + if (objValue === undefined || + (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) { + return srcValue; + } + return objValue; + } + + /** + * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source + * objects into destination objects that are passed thru. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to merge. + * @param {Object} object The parent object of `objValue`. + * @param {Object} source The parent object of `srcValue`. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + * @returns {*} Returns the value to assign. + */ + function customDefaultsMerge(objValue, srcValue, key, object, source, stack) { + if (isObject(objValue) && isObject(srcValue)) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, objValue); + baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack); + stack['delete'](srcValue); + } + return objValue; + } + + /** + * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain + * objects. + * + * @private + * @param {*} value The value to inspect. + * @param {string} key The key of the property to inspect. + * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`. + */ + function customOmitClone(value) { + return isPlainObject(value) ? undefined : value; + } + + /** + * A specialized version of `baseIsEqualDeep` for arrays with support for + * partial deep comparisons. + * + * @private + * @param {Array} array The array to compare. + * @param {Array} other The other array to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `array` and `other` objects. + * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`. + */ + function equalArrays(array, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + arrLength = array.length, + othLength = other.length; + + if (arrLength != othLength && !(isPartial && othLength > arrLength)) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(array); + if (stacked && stack.get(other)) { + return stacked == other; + } + var index = -1, + result = true, + seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined; + + stack.set(array, other); + stack.set(other, array); + + // Ignore non-index properties. + while (++index < arrLength) { + var arrValue = array[index], + othValue = other[index]; + + if (customizer) { + var compared = isPartial + ? customizer(othValue, arrValue, index, other, array, stack) + : customizer(arrValue, othValue, index, array, other, stack); + } + if (compared !== undefined) { + if (compared) { + continue; + } + result = false; + break; + } + // Recursively compare arrays (susceptible to call stack limits). + if (seen) { + if (!arraySome(other, function(othValue, othIndex) { + if (!cacheHas(seen, othIndex) && + (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) { + return seen.push(othIndex); + } + })) { + result = false; + break; + } + } else if (!( + arrValue === othValue || + equalFunc(arrValue, othValue, bitmask, customizer, stack) + )) { + result = false; + break; + } + } + stack['delete'](array); + stack['delete'](other); + return result; + } + + /** + * A specialized version of `baseIsEqualDeep` for comparing objects of + * the same `toStringTag`. + * + * **Note:** This function only supports comparing values with tags of + * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {string} tag The `toStringTag` of the objects to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) { + switch (tag) { + case dataViewTag: + if ((object.byteLength != other.byteLength) || + (object.byteOffset != other.byteOffset)) { + return false; + } + object = object.buffer; + other = other.buffer; + + case arrayBufferTag: + if ((object.byteLength != other.byteLength) || + !equalFunc(new Uint8Array(object), new Uint8Array(other))) { + return false; + } + return true; + + case boolTag: + case dateTag: + case numberTag: + // Coerce booleans to `1` or `0` and dates to milliseconds. + // Invalid dates are coerced to `NaN`. + return eq(+object, +other); + + case errorTag: + return object.name == other.name && object.message == other.message; + + case regexpTag: + case stringTag: + // Coerce regexes to strings and treat strings, primitives and objects, + // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring + // for more details. + return object == (other + ''); + + case mapTag: + var convert = mapToArray; + + case setTag: + var isPartial = bitmask & COMPARE_PARTIAL_FLAG; + convert || (convert = setToArray); + + if (object.size != other.size && !isPartial) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked) { + return stacked == other; + } + bitmask |= COMPARE_UNORDERED_FLAG; + + // Recursively compare objects (susceptible to call stack limits). + stack.set(object, other); + var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack); + stack['delete'](object); + return result; + + case symbolTag: + if (symbolValueOf) { + return symbolValueOf.call(object) == symbolValueOf.call(other); + } + } + return false; + } + + /** + * A specialized version of `baseIsEqualDeep` for objects with support for + * partial deep comparisons. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalObjects(object, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + objProps = getAllKeys(object), + objLength = objProps.length, + othProps = getAllKeys(other), + othLength = othProps.length; + + if (objLength != othLength && !isPartial) { + return false; + } + var index = objLength; + while (index--) { + var key = objProps[index]; + if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) { + return false; + } + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked && stack.get(other)) { + return stacked == other; + } + var result = true; + stack.set(object, other); + stack.set(other, object); + + var skipCtor = isPartial; + while (++index < objLength) { + key = objProps[index]; + var objValue = object[key], + othValue = other[key]; + + if (customizer) { + var compared = isPartial + ? customizer(othValue, objValue, key, other, object, stack) + : customizer(objValue, othValue, key, object, other, stack); + } + // Recursively compare objects (susceptible to call stack limits). + if (!(compared === undefined + ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack)) + : compared + )) { + result = false; + break; + } + skipCtor || (skipCtor = key == 'constructor'); + } + if (result && !skipCtor) { + var objCtor = object.constructor, + othCtor = other.constructor; + + // Non `Object` object instances with different constructors are not equal. + if (objCtor != othCtor && + ('constructor' in object && 'constructor' in other) && + !(typeof objCtor == 'function' && objCtor instanceof objCtor && + typeof othCtor == 'function' && othCtor instanceof othCtor)) { + result = false; + } + } + stack['delete'](object); + stack['delete'](other); + return result; + } + + /** + * A specialized version of `baseRest` which flattens the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + function flatRest(func) { + return setToString(overRest(func, undefined, flatten), func + ''); + } + + /** + * Creates an array of own enumerable property names and symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeys(object) { + return baseGetAllKeys(object, keys, getSymbols); + } + + /** + * Creates an array of own and inherited enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeysIn(object) { + return baseGetAllKeys(object, keysIn, getSymbolsIn); + } + + /** + * Gets metadata for `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {*} Returns the metadata for `func`. + */ + var getData = !metaMap ? noop : function(func) { + return metaMap.get(func); + }; + + /** + * Gets the name of `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {string} Returns the function name. + */ + function getFuncName(func) { + var result = (func.name + ''), + array = realNames[result], + length = hasOwnProperty.call(realNames, result) ? array.length : 0; + + while (length--) { + var data = array[length], + otherFunc = data.func; + if (otherFunc == null || otherFunc == func) { + return data.name; + } + } + return result; + } + + /** + * Gets the argument placeholder value for `func`. + * + * @private + * @param {Function} func The function to inspect. + * @returns {*} Returns the placeholder value. + */ + function getHolder(func) { + var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func; + return object.placeholder; + } + + /** + * Gets the appropriate "iteratee" function. If `_.iteratee` is customized, + * this function returns the custom method, otherwise it returns `baseIteratee`. + * If arguments are provided, the chosen function is invoked with them and + * its result is returned. + * + * @private + * @param {*} [value] The value to convert to an iteratee. + * @param {number} [arity] The arity of the created iteratee. + * @returns {Function} Returns the chosen function or its result. + */ + function getIteratee() { + var result = lodash.iteratee || iteratee; + result = result === iteratee ? baseIteratee : result; + return arguments.length ? result(arguments[0], arguments[1]) : result; + } + + /** + * Gets the data for `map`. + * + * @private + * @param {Object} map The map to query. + * @param {string} key The reference key. + * @returns {*} Returns the map data. + */ + function getMapData(map, key) { + var data = map.__data__; + return isKeyable(key) + ? data[typeof key == 'string' ? 'string' : 'hash'] + : data.map; + } + + /** + * Gets the property names, values, and compare flags of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the match data of `object`. + */ + function getMatchData(object) { + var result = keys(object), + length = result.length; + + while (length--) { + var key = result[length], + value = object[key]; + + result[length] = [key, value, isStrictComparable(value)]; + } + return result; + } + + /** + * Gets the native function at `key` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the method to get. + * @returns {*} Returns the function if it's native, else `undefined`. + */ + function getNative(object, key) { + var value = getValue(object, key); + return baseIsNative(value) ? value : undefined; + } + + /** + * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the raw `toStringTag`. + */ + function getRawTag(value) { + var isOwn = hasOwnProperty.call(value, symToStringTag), + tag = value[symToStringTag]; + + try { + value[symToStringTag] = undefined; + var unmasked = true; + } catch (e) {} + + var result = nativeObjectToString.call(value); + if (unmasked) { + if (isOwn) { + value[symToStringTag] = tag; + } else { + delete value[symToStringTag]; + } + } + return result; + } + + /** + * Creates an array of the own enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbols = !nativeGetSymbols ? stubArray : function(object) { + if (object == null) { + return []; + } + object = Object(object); + return arrayFilter(nativeGetSymbols(object), function(symbol) { + return propertyIsEnumerable.call(object, symbol); + }); + }; + + /** + * Creates an array of the own and inherited enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) { + var result = []; + while (object) { + arrayPush(result, getSymbols(object)); + object = getPrototype(object); + } + return result; + }; + + /** + * Gets the `toStringTag` of `value`. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + var getTag = baseGetTag; + + // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6. + if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) || + (Map && getTag(new Map) != mapTag) || + (Promise && getTag(Promise.resolve()) != promiseTag) || + (Set && getTag(new Set) != setTag) || + (WeakMap && getTag(new WeakMap) != weakMapTag)) { + getTag = function(value) { + var result = baseGetTag(value), + Ctor = result == objectTag ? value.constructor : undefined, + ctorString = Ctor ? toSource(Ctor) : ''; + + if (ctorString) { + switch (ctorString) { + case dataViewCtorString: return dataViewTag; + case mapCtorString: return mapTag; + case promiseCtorString: return promiseTag; + case setCtorString: return setTag; + case weakMapCtorString: return weakMapTag; + } + } + return result; + }; + } + + /** + * Gets the view, applying any `transforms` to the `start` and `end` positions. + * + * @private + * @param {number} start The start of the view. + * @param {number} end The end of the view. + * @param {Array} transforms The transformations to apply to the view. + * @returns {Object} Returns an object containing the `start` and `end` + * positions of the view. + */ + function getView(start, end, transforms) { + var index = -1, + length = transforms.length; + + while (++index < length) { + var data = transforms[index], + size = data.size; + + switch (data.type) { + case 'drop': start += size; break; + case 'dropRight': end -= size; break; + case 'take': end = nativeMin(end, start + size); break; + case 'takeRight': start = nativeMax(start, end - size); break; + } + } + return { 'start': start, 'end': end }; + } + + /** + * Extracts wrapper details from the `source` body comment. + * + * @private + * @param {string} source The source to inspect. + * @returns {Array} Returns the wrapper details. + */ + function getWrapDetails(source) { + var match = source.match(reWrapDetails); + return match ? match[1].split(reSplitDetails) : []; + } + + /** + * Checks if `path` exists on `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @param {Function} hasFunc The function to check properties. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + */ + function hasPath(object, path, hasFunc) { + path = castPath(path, object); + + var index = -1, + length = path.length, + result = false; + + while (++index < length) { + var key = toKey(path[index]); + if (!(result = object != null && hasFunc(object, key))) { + break; + } + object = object[key]; + } + if (result || ++index != length) { + return result; + } + length = object == null ? 0 : object.length; + return !!length && isLength(length) && isIndex(key, length) && + (isArray(object) || isArguments(object)); + } + + /** + * Initializes an array clone. + * + * @private + * @param {Array} array The array to clone. + * @returns {Array} Returns the initialized clone. + */ + function initCloneArray(array) { + var length = array.length, + result = new array.constructor(length); + + // Add properties assigned by `RegExp#exec`. + if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) { + result.index = array.index; + result.input = array.input; + } + return result; + } + + /** + * Initializes an object clone. + * + * @private + * @param {Object} object The object to clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneObject(object) { + return (typeof object.constructor == 'function' && !isPrototype(object)) + ? baseCreate(getPrototype(object)) + : {}; + } + + /** + * Initializes an object clone based on its `toStringTag`. + * + * **Note:** This function only supports cloning values with tags of + * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`. + * + * @private + * @param {Object} object The object to clone. + * @param {string} tag The `toStringTag` of the object to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneByTag(object, tag, isDeep) { + var Ctor = object.constructor; + switch (tag) { + case arrayBufferTag: + return cloneArrayBuffer(object); + + case boolTag: + case dateTag: + return new Ctor(+object); + + case dataViewTag: + return cloneDataView(object, isDeep); + + case float32Tag: case float64Tag: + case int8Tag: case int16Tag: case int32Tag: + case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag: + return cloneTypedArray(object, isDeep); + + case mapTag: + return new Ctor; + + case numberTag: + case stringTag: + return new Ctor(object); + + case regexpTag: + return cloneRegExp(object); + + case setTag: + return new Ctor; + + case symbolTag: + return cloneSymbol(object); + } + } + + /** + * Inserts wrapper `details` in a comment at the top of the `source` body. + * + * @private + * @param {string} source The source to modify. + * @returns {Array} details The details to insert. + * @returns {string} Returns the modified source. + */ + function insertWrapDetails(source, details) { + var length = details.length; + if (!length) { + return source; + } + var lastIndex = length - 1; + details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex]; + details = details.join(length > 2 ? ', ' : ' '); + return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n'); + } + + /** + * Checks if `value` is a flattenable `arguments` object or array. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is flattenable, else `false`. + */ + function isFlattenable(value) { + return isArray(value) || isArguments(value) || + !!(spreadableSymbol && value && value[spreadableSymbol]); + } + + /** + * Checks if `value` is a valid array-like index. + * + * @private + * @param {*} value The value to check. + * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. + * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. + */ + function isIndex(value, length) { + var type = typeof value; + length = length == null ? MAX_SAFE_INTEGER : length; + + return !!length && + (type == 'number' || + (type != 'symbol' && reIsUint.test(value))) && + (value > -1 && value % 1 == 0 && value < length); + } + + /** + * Checks if the given arguments are from an iteratee call. + * + * @private + * @param {*} value The potential iteratee value argument. + * @param {*} index The potential iteratee index or key argument. + * @param {*} object The potential iteratee object argument. + * @returns {boolean} Returns `true` if the arguments are from an iteratee call, + * else `false`. + */ + function isIterateeCall(value, index, object) { + if (!isObject(object)) { + return false; + } + var type = typeof index; + if (type == 'number' + ? (isArrayLike(object) && isIndex(index, object.length)) + : (type == 'string' && index in object) + ) { + return eq(object[index], value); + } + return false; + } + + /** + * Checks if `value` is a property name and not a property path. + * + * @private + * @param {*} value The value to check. + * @param {Object} [object] The object to query keys on. + * @returns {boolean} Returns `true` if `value` is a property name, else `false`. + */ + function isKey(value, object) { + if (isArray(value)) { + return false; + } + var type = typeof value; + if (type == 'number' || type == 'symbol' || type == 'boolean' || + value == null || isSymbol(value)) { + return true; + } + return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || + (object != null && value in Object(object)); + } + + /** + * Checks if `value` is suitable for use as unique object key. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is suitable, else `false`. + */ + function isKeyable(value) { + var type = typeof value; + return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean') + ? (value !== '__proto__') + : (value === null); + } + + /** + * Checks if `func` has a lazy counterpart. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` has a lazy counterpart, + * else `false`. + */ + function isLaziable(func) { + var funcName = getFuncName(func), + other = lodash[funcName]; + + if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) { + return false; + } + if (func === other) { + return true; + } + var data = getData(other); + return !!data && func === data[0]; + } + + /** + * Checks if `func` has its source masked. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` is masked, else `false`. + */ + function isMasked(func) { + return !!maskSrcKey && (maskSrcKey in func); + } + + /** + * Checks if `func` is capable of being masked. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `func` is maskable, else `false`. + */ + var isMaskable = coreJsData ? isFunction : stubFalse; + + /** + * Checks if `value` is likely a prototype object. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. + */ + function isPrototype(value) { + var Ctor = value && value.constructor, + proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto; + + return value === proto; + } + + /** + * Checks if `value` is suitable for strict equality comparisons, i.e. `===`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` if suitable for strict + * equality comparisons, else `false`. + */ + function isStrictComparable(value) { + return value === value && !isObject(value); + } + + /** + * A specialized version of `matchesProperty` for source values suitable + * for strict equality comparisons, i.e. `===`. + * + * @private + * @param {string} key The key of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function matchesStrictComparable(key, srcValue) { + return function(object) { + if (object == null) { + return false; + } + return object[key] === srcValue && + (srcValue !== undefined || (key in Object(object))); + }; + } + + /** + * A specialized version of `_.memoize` which clears the memoized function's + * cache when it exceeds `MAX_MEMOIZE_SIZE`. + * + * @private + * @param {Function} func The function to have its output memoized. + * @returns {Function} Returns the new memoized function. + */ + function memoizeCapped(func) { + var result = memoize(func, function(key) { + if (cache.size === MAX_MEMOIZE_SIZE) { + cache.clear(); + } + return key; + }); + + var cache = result.cache; + return result; + } + + /** + * Merges the function metadata of `source` into `data`. + * + * Merging metadata reduces the number of wrappers used to invoke a function. + * This is possible because methods like `_.bind`, `_.curry`, and `_.partial` + * may be applied regardless of execution order. Methods like `_.ary` and + * `_.rearg` modify function arguments, making the order in which they are + * executed important, preventing the merging of metadata. However, we make + * an exception for a safe combined case where curried functions have `_.ary` + * and or `_.rearg` applied. + * + * @private + * @param {Array} data The destination metadata. + * @param {Array} source The source metadata. + * @returns {Array} Returns `data`. + */ + function mergeData(data, source) { + var bitmask = data[1], + srcBitmask = source[1], + newBitmask = bitmask | srcBitmask, + isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG); + + var isCombo = + ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) || + ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) || + ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG)); + + // Exit early if metadata can't be merged. + if (!(isCommon || isCombo)) { + return data; + } + // Use source `thisArg` if available. + if (srcBitmask & WRAP_BIND_FLAG) { + data[2] = source[2]; + // Set when currying a bound function. + newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG; + } + // Compose partial arguments. + var value = source[3]; + if (value) { + var partials = data[3]; + data[3] = partials ? composeArgs(partials, value, source[4]) : value; + data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4]; + } + // Compose partial right arguments. + value = source[5]; + if (value) { + partials = data[5]; + data[5] = partials ? composeArgsRight(partials, value, source[6]) : value; + data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6]; + } + // Use source `argPos` if available. + value = source[7]; + if (value) { + data[7] = value; + } + // Use source `ary` if it's smaller. + if (srcBitmask & WRAP_ARY_FLAG) { + data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]); + } + // Use source `arity` if one is not provided. + if (data[9] == null) { + data[9] = source[9]; + } + // Use source `func` and merge bitmasks. + data[0] = source[0]; + data[1] = newBitmask; + + return data; + } + + /** + * This function is like + * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * except that it includes inherited enumerable properties. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function nativeKeysIn(object) { + var result = []; + if (object != null) { + for (var key in Object(object)) { + result.push(key); + } + } + return result; + } + + /** + * Converts `value` to a string using `Object.prototype.toString`. + * + * @private + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + */ + function objectToString(value) { + return nativeObjectToString.call(value); + } + + /** + * A specialized version of `baseRest` which transforms the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @param {Function} transform The rest array transform. + * @returns {Function} Returns the new function. + */ + function overRest(func, start, transform) { + start = nativeMax(start === undefined ? (func.length - 1) : start, 0); + return function() { + var args = arguments, + index = -1, + length = nativeMax(args.length - start, 0), + array = Array(length); + + while (++index < length) { + array[index] = args[start + index]; + } + index = -1; + var otherArgs = Array(start + 1); + while (++index < start) { + otherArgs[index] = args[index]; + } + otherArgs[start] = transform(array); + return apply(func, this, otherArgs); + }; + } + + /** + * Gets the parent value at `path` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} path The path to get the parent value of. + * @returns {*} Returns the parent value. + */ + function parent(object, path) { + return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1)); + } + + /** + * Reorder `array` according to the specified indexes where the element at + * the first index is assigned as the first element, the element at + * the second index is assigned as the second element, and so on. + * + * @private + * @param {Array} array The array to reorder. + * @param {Array} indexes The arranged array indexes. + * @returns {Array} Returns `array`. + */ + function reorder(array, indexes) { + var arrLength = array.length, + length = nativeMin(indexes.length, arrLength), + oldArray = copyArray(array); + + while (length--) { + var index = indexes[length]; + array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined; + } + return array; + } + + /** + * Gets the value at `key`, unless `key` is "__proto__" or "constructor". + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function safeGet(object, key) { + if (key === 'constructor' && typeof object[key] === 'function') { + return; + } + + if (key == '__proto__') { + return; + } + + return object[key]; + } + + /** + * Sets metadata for `func`. + * + * **Note:** If this function becomes hot, i.e. is invoked a lot in a short + * period of time, it will trip its breaker and transition to an identity + * function to avoid garbage collection pauses in V8. See + * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070) + * for more details. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var setData = shortOut(baseSetData); + + /** + * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout). + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @returns {number|Object} Returns the timer id or timeout object. + */ + var setTimeout = ctxSetTimeout || function(func, wait) { + return root.setTimeout(func, wait); + }; + + /** + * Sets the `toString` method of `func` to return `string`. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var setToString = shortOut(baseSetToString); + + /** + * Sets the `toString` method of `wrapper` to mimic the source of `reference` + * with wrapper details in a comment at the top of the source body. + * + * @private + * @param {Function} wrapper The function to modify. + * @param {Function} reference The reference function. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Function} Returns `wrapper`. + */ + function setWrapToString(wrapper, reference, bitmask) { + var source = (reference + ''); + return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask))); + } + + /** + * Creates a function that'll short out and invoke `identity` instead + * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN` + * milliseconds. + * + * @private + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new shortable function. + */ + function shortOut(func) { + var count = 0, + lastCalled = 0; + + return function() { + var stamp = nativeNow(), + remaining = HOT_SPAN - (stamp - lastCalled); + + lastCalled = stamp; + if (remaining > 0) { + if (++count >= HOT_COUNT) { + return arguments[0]; + } + } else { + count = 0; + } + return func.apply(undefined, arguments); + }; + } + + /** + * A specialized version of `_.shuffle` which mutates and sets the size of `array`. + * + * @private + * @param {Array} array The array to shuffle. + * @param {number} [size=array.length] The size of `array`. + * @returns {Array} Returns `array`. + */ + function shuffleSelf(array, size) { + var index = -1, + length = array.length, + lastIndex = length - 1; + + size = size === undefined ? length : size; + while (++index < size) { + var rand = baseRandom(index, lastIndex), + value = array[rand]; + + array[rand] = array[index]; + array[index] = value; + } + array.length = size; + return array; + } + + /** + * Converts `string` to a property path array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the property path array. + */ + var stringToPath = memoizeCapped(function(string) { + var result = []; + if (string.charCodeAt(0) === 46 /* . */) { + result.push(''); + } + string.replace(rePropName, function(match, number, quote, subString) { + result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match)); + }); + return result; + }); + + /** + * Converts `value` to a string key if it's not a string or symbol. + * + * @private + * @param {*} value The value to inspect. + * @returns {string|symbol} Returns the key. + */ + function toKey(value) { + if (typeof value == 'string' || isSymbol(value)) { + return value; + } + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; + } + + /** + * Converts `func` to its source code. + * + * @private + * @param {Function} func The function to convert. + * @returns {string} Returns the source code. + */ + function toSource(func) { + if (func != null) { + try { + return funcToString.call(func); + } catch (e) {} + try { + return (func + ''); + } catch (e) {} + } + return ''; + } + + /** + * Updates wrapper `details` based on `bitmask` flags. + * + * @private + * @returns {Array} details The details to modify. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Array} Returns `details`. + */ + function updateWrapDetails(details, bitmask) { + arrayEach(wrapFlags, function(pair) { + var value = '_.' + pair[0]; + if ((bitmask & pair[1]) && !arrayIncludes(details, value)) { + details.push(value); + } + }); + return details.sort(); + } + + /** + * Creates a clone of `wrapper`. + * + * @private + * @param {Object} wrapper The wrapper to clone. + * @returns {Object} Returns the cloned wrapper. + */ + function wrapperClone(wrapper) { + if (wrapper instanceof LazyWrapper) { + return wrapper.clone(); + } + var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__); + result.__actions__ = copyArray(wrapper.__actions__); + result.__index__ = wrapper.__index__; + result.__values__ = wrapper.__values__; + return result; + } + + /*------------------------------------------------------------------------*/ + + /** + * Creates an array of elements split into groups the length of `size`. + * If `array` can't be split evenly, the final chunk will be the remaining + * elements. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to process. + * @param {number} [size=1] The length of each chunk + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the new array of chunks. + * @example + * + * _.chunk(['a', 'b', 'c', 'd'], 2); + * // => [['a', 'b'], ['c', 'd']] + * + * _.chunk(['a', 'b', 'c', 'd'], 3); + * // => [['a', 'b', 'c'], ['d']] + */ + function chunk(array, size, guard) { + if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) { + size = 1; + } else { + size = nativeMax(toInteger(size), 0); + } + var length = array == null ? 0 : array.length; + if (!length || size < 1) { + return []; + } + var index = 0, + resIndex = 0, + result = Array(nativeCeil(length / size)); + + while (index < length) { + result[resIndex++] = baseSlice(array, index, (index += size)); + } + return result; + } + + /** + * Creates an array with all falsey values removed. The values `false`, `null`, + * `0`, `""`, `undefined`, and `NaN` are falsey. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to compact. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.compact([0, 1, false, 2, '', 3]); + * // => [1, 2, 3] + */ + function compact(array) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value) { + result[resIndex++] = value; + } + } + return result; + } + + /** + * Creates a new array concatenating `array` with any additional arrays + * and/or values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to concatenate. + * @param {...*} [values] The values to concatenate. + * @returns {Array} Returns the new concatenated array. + * @example + * + * var array = [1]; + * var other = _.concat(array, 2, [3], [[4]]); + * + * console.log(other); + * // => [1, 2, 3, [4]] + * + * console.log(array); + * // => [1] + */ + function concat() { + var length = arguments.length; + if (!length) { + return []; + } + var args = Array(length - 1), + array = arguments[0], + index = length; + + while (index--) { + args[index - 1] = arguments[index]; + } + return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1)); + } + + /** + * Creates an array of `array` values not included in the other given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * **Note:** Unlike `_.pullAll`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.without, _.xor + * @example + * + * _.difference([2, 1], [2, 3]); + * // => [1] + */ + var difference = baseRest(function(array, values) { + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) + : []; + }); + + /** + * This method is like `_.difference` except that it accepts `iteratee` which + * is invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * **Note:** Unlike `_.pullAllBy`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2] + * + * // The `_.property` iteratee shorthand. + * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var differenceBy = baseRest(function(array, values) { + var iteratee = last(values); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) + : []; + }); + + /** + * This method is like `_.difference` except that it accepts `comparator` + * which is invoked to compare elements of `array` to `values`. The order and + * references of result values are determined by the first array. The comparator + * is invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.pullAllWith`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * + * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual); + * // => [{ 'x': 2, 'y': 1 }] + */ + var differenceWith = baseRest(function(array, values) { + var comparator = last(values); + if (isArrayLikeObject(comparator)) { + comparator = undefined; + } + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) + : []; + }); + + /** + * Creates a slice of `array` with `n` elements dropped from the beginning. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.drop([1, 2, 3]); + * // => [2, 3] + * + * _.drop([1, 2, 3], 2); + * // => [3] + * + * _.drop([1, 2, 3], 5); + * // => [] + * + * _.drop([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function drop(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + return baseSlice(array, n < 0 ? 0 : n, length); + } + + /** + * Creates a slice of `array` with `n` elements dropped from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.dropRight([1, 2, 3]); + * // => [1, 2] + * + * _.dropRight([1, 2, 3], 2); + * // => [1] + * + * _.dropRight([1, 2, 3], 5); + * // => [] + * + * _.dropRight([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function dropRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, 0, n < 0 ? 0 : n); + } + + /** + * Creates a slice of `array` excluding elements dropped from the end. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.dropRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney'] + * + * // The `_.matches` iteratee shorthand. + * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropRightWhile(users, ['active', false]); + * // => objects for ['barney'] + * + * // The `_.property` iteratee shorthand. + * _.dropRightWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropRightWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), true, true) + : []; + } + + /** + * Creates a slice of `array` excluding elements dropped from the beginning. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.dropWhile(users, function(o) { return !o.active; }); + * // => objects for ['pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.dropWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropWhile(users, ['active', false]); + * // => objects for ['pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.dropWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), true) + : []; + } + + /** + * Fills elements of `array` with `value` from `start` up to, but not + * including, `end`. + * + * **Note:** This method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Array + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.fill(array, 'a'); + * console.log(array); + * // => ['a', 'a', 'a'] + * + * _.fill(Array(3), 2); + * // => [2, 2, 2] + * + * _.fill([4, 6, 8, 10], '*', 1, 3); + * // => [4, '*', '*', 10] + */ + function fill(array, value, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (start && typeof start != 'number' && isIterateeCall(array, value, start)) { + start = 0; + end = length; + } + return baseFill(array, value, start, end); + } + + /** + * This method is like `_.find` except that it returns the index of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.findIndex(users, function(o) { return o.user == 'barney'; }); + * // => 0 + * + * // The `_.matches` iteratee shorthand. + * _.findIndex(users, { 'user': 'fred', 'active': false }); + * // => 1 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findIndex(users, ['active', false]); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.findIndex(users, 'active'); + * // => 2 + */ + function findIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseFindIndex(array, getIteratee(predicate, 3), index); + } + + /** + * This method is like `_.findIndex` except that it iterates over elements + * of `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); + * // => 2 + * + * // The `_.matches` iteratee shorthand. + * _.findLastIndex(users, { 'user': 'barney', 'active': true }); + * // => 0 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastIndex(users, ['active', false]); + * // => 2 + * + * // The `_.property` iteratee shorthand. + * _.findLastIndex(users, 'active'); + * // => 0 + */ + function findLastIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length - 1; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = fromIndex < 0 + ? nativeMax(length + index, 0) + : nativeMin(index, length - 1); + } + return baseFindIndex(array, getIteratee(predicate, 3), index, true); + } + + /** + * Flattens `array` a single level deep. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flatten([1, [2, [3, [4]], 5]]); + * // => [1, 2, [3, [4]], 5] + */ + function flatten(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, 1) : []; + } + + /** + * Recursively flattens `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flattenDeep([1, [2, [3, [4]], 5]]); + * // => [1, 2, 3, 4, 5] + */ + function flattenDeep(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, INFINITY) : []; + } + + /** + * Recursively flatten `array` up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Array + * @param {Array} array The array to flatten. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * var array = [1, [2, [3, [4]], 5]]; + * + * _.flattenDepth(array, 1); + * // => [1, 2, [3, [4]], 5] + * + * _.flattenDepth(array, 2); + * // => [1, 2, 3, [4], 5] + */ + function flattenDepth(array, depth) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(array, depth); + } + + /** + * The inverse of `_.toPairs`; this method returns an object composed + * from key-value `pairs`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} pairs The key-value pairs. + * @returns {Object} Returns the new object. + * @example + * + * _.fromPairs([['a', 1], ['b', 2]]); + * // => { 'a': 1, 'b': 2 } + */ + function fromPairs(pairs) { + var index = -1, + length = pairs == null ? 0 : pairs.length, + result = {}; + + while (++index < length) { + var pair = pairs[index]; + result[pair[0]] = pair[1]; + } + return result; + } + + /** + * Gets the first element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias first + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the first element of `array`. + * @example + * + * _.head([1, 2, 3]); + * // => 1 + * + * _.head([]); + * // => undefined + */ + function head(array) { + return (array && array.length) ? array[0] : undefined; + } + + /** + * Gets the index at which the first occurrence of `value` is found in `array` + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. If `fromIndex` is negative, it's used as the + * offset from the end of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.indexOf([1, 2, 1, 2], 2); + * // => 1 + * + * // Search from the `fromIndex`. + * _.indexOf([1, 2, 1, 2], 2, 2); + * // => 3 + */ + function indexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseIndexOf(array, value, index); + } + + /** + * Gets all but the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.initial([1, 2, 3]); + * // => [1, 2] + */ + function initial(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 0, -1) : []; + } + + /** + * Creates an array of unique values that are included in all given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersection([2, 1], [2, 3]); + * // => [2] + */ + var intersection = baseRest(function(arrays) { + var mapped = arrayMap(arrays, castArrayLikeObject); + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped) + : []; + }); + + /** + * This method is like `_.intersection` except that it accepts `iteratee` + * which is invoked for each element of each `arrays` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [2.1] + * + * // The `_.property` iteratee shorthand. + * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }] + */ + var intersectionBy = baseRest(function(arrays) { + var iteratee = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); + + if (iteratee === last(mapped)) { + iteratee = undefined; + } else { + mapped.pop(); + } + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped, getIteratee(iteratee, 2)) + : []; + }); + + /** + * This method is like `_.intersection` except that it accepts `comparator` + * which is invoked to compare elements of `arrays`. The order and references + * of result values are determined by the first array. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.intersectionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }] + */ + var intersectionWith = baseRest(function(arrays) { + var comparator = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); + + comparator = typeof comparator == 'function' ? comparator : undefined; + if (comparator) { + mapped.pop(); + } + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped, undefined, comparator) + : []; + }); + + /** + * Converts all elements in `array` into a string separated by `separator`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to convert. + * @param {string} [separator=','] The element separator. + * @returns {string} Returns the joined string. + * @example + * + * _.join(['a', 'b', 'c'], '~'); + * // => 'a~b~c' + */ + function join(array, separator) { + return array == null ? '' : nativeJoin.call(array, separator); + } + + /** + * Gets the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the last element of `array`. + * @example + * + * _.last([1, 2, 3]); + * // => 3 + */ + function last(array) { + var length = array == null ? 0 : array.length; + return length ? array[length - 1] : undefined; + } + + /** + * This method is like `_.indexOf` except that it iterates over elements of + * `array` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.lastIndexOf([1, 2, 1, 2], 2); + * // => 3 + * + * // Search from the `fromIndex`. + * _.lastIndexOf([1, 2, 1, 2], 2, 2); + * // => 1 + */ + function lastIndexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1); + } + return value === value + ? strictLastIndexOf(array, value, index) + : baseFindIndex(array, baseIsNaN, index, true); + } + + /** + * Gets the element at index `n` of `array`. If `n` is negative, the nth + * element from the end is returned. + * + * @static + * @memberOf _ + * @since 4.11.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=0] The index of the element to return. + * @returns {*} Returns the nth element of `array`. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * + * _.nth(array, 1); + * // => 'b' + * + * _.nth(array, -2); + * // => 'c'; + */ + function nth(array, n) { + return (array && array.length) ? baseNth(array, toInteger(n)) : undefined; + } + + /** + * Removes all given values from `array` using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove` + * to remove elements from an array by predicate. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...*} [values] The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pull(array, 'a', 'c'); + * console.log(array); + * // => ['b', 'b'] + */ + var pull = baseRest(pullAll); + + /** + * This method is like `_.pull` except that it accepts an array of values to remove. + * + * **Note:** Unlike `_.difference`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pullAll(array, ['a', 'c']); + * console.log(array); + * // => ['b', 'b'] + */ + function pullAll(array, values) { + return (array && array.length && values && values.length) + ? basePullAll(array, values) + : array; + } + + /** + * This method is like `_.pullAll` except that it accepts `iteratee` which is + * invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The iteratee is invoked with one argument: (value). + * + * **Note:** Unlike `_.differenceBy`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }]; + * + * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x'); + * console.log(array); + * // => [{ 'x': 2 }] + */ + function pullAllBy(array, values, iteratee) { + return (array && array.length && values && values.length) + ? basePullAll(array, values, getIteratee(iteratee, 2)) + : array; + } + + /** + * This method is like `_.pullAll` except that it accepts `comparator` which + * is invoked to compare elements of `array` to `values`. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.differenceWith`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }]; + * + * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual); + * console.log(array); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }] + */ + function pullAllWith(array, values, comparator) { + return (array && array.length && values && values.length) + ? basePullAll(array, values, undefined, comparator) + : array; + } + + /** + * Removes elements from `array` corresponding to `indexes` and returns an + * array of removed elements. + * + * **Note:** Unlike `_.at`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...(number|number[])} [indexes] The indexes of elements to remove. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * var pulled = _.pullAt(array, [1, 3]); + * + * console.log(array); + * // => ['a', 'c'] + * + * console.log(pulled); + * // => ['b', 'd'] + */ + var pullAt = flatRest(function(array, indexes) { + var length = array == null ? 0 : array.length, + result = baseAt(array, indexes); + + basePullAt(array, arrayMap(indexes, function(index) { + return isIndex(index, length) ? +index : index; + }).sort(compareAscending)); + + return result; + }); + + /** + * Removes all elements from `array` that `predicate` returns truthy for + * and returns an array of the removed elements. The predicate is invoked + * with three arguments: (value, index, array). + * + * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull` + * to pull elements from an array by value. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = [1, 2, 3, 4]; + * var evens = _.remove(array, function(n) { + * return n % 2 == 0; + * }); + * + * console.log(array); + * // => [1, 3] + * + * console.log(evens); + * // => [2, 4] + */ + function remove(array, predicate) { + var result = []; + if (!(array && array.length)) { + return result; + } + var index = -1, + indexes = [], + length = array.length; + + predicate = getIteratee(predicate, 3); + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result.push(value); + indexes.push(index); + } + } + basePullAt(array, indexes); + return result; + } + + /** + * Reverses `array` so that the first element becomes the last, the second + * element becomes the second to last, and so on. + * + * **Note:** This method mutates `array` and is based on + * [`Array#reverse`](https://mdn.io/Array/reverse). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.reverse(array); + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function reverse(array) { + return array == null ? array : nativeReverse.call(array); + } + + /** + * Creates a slice of `array` from `start` up to, but not including, `end`. + * + * **Note:** This method is used instead of + * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are + * returned. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function slice(array, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (end && typeof end != 'number' && isIterateeCall(array, start, end)) { + start = 0; + end = length; + } + else { + start = start == null ? 0 : toInteger(start); + end = end === undefined ? length : toInteger(end); + } + return baseSlice(array, start, end); + } + + /** + * Uses a binary search to determine the lowest index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedIndex([30, 50], 40); + * // => 1 + */ + function sortedIndex(array, value) { + return baseSortedIndex(array, value); + } + + /** + * This method is like `_.sortedIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.sortedIndexBy(objects, { 'x': 4 }, 'x'); + * // => 0 + */ + function sortedIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2)); + } + + /** + * This method is like `_.indexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedIndexOf([4, 5, 5, 5, 6], 5); + * // => 1 + */ + function sortedIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value); + if (index < length && eq(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * This method is like `_.sortedIndex` except that it returns the highest + * index at which `value` should be inserted into `array` in order to + * maintain its sort order. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedLastIndex([4, 5, 5, 5, 6], 5); + * // => 4 + */ + function sortedLastIndex(array, value) { + return baseSortedIndex(array, value, true); + } + + /** + * This method is like `_.sortedLastIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 1 + * + * // The `_.property` iteratee shorthand. + * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x'); + * // => 1 + */ + function sortedLastIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true); + } + + /** + * This method is like `_.lastIndexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5); + * // => 3 + */ + function sortedLastIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value, true) - 1; + if (eq(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * This method is like `_.uniq` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniq([1, 1, 2]); + * // => [1, 2] + */ + function sortedUniq(array) { + return (array && array.length) + ? baseSortedUniq(array) + : []; + } + + /** + * This method is like `_.uniqBy` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor); + * // => [1.1, 2.3] + */ + function sortedUniqBy(array, iteratee) { + return (array && array.length) + ? baseSortedUniq(array, getIteratee(iteratee, 2)) + : []; + } + + /** + * Gets all but the first element of `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.tail([1, 2, 3]); + * // => [2, 3] + */ + function tail(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 1, length) : []; + } + + /** + * Creates a slice of `array` with `n` elements taken from the beginning. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.take([1, 2, 3]); + * // => [1] + * + * _.take([1, 2, 3], 2); + * // => [1, 2] + * + * _.take([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.take([1, 2, 3], 0); + * // => [] + */ + function take(array, n, guard) { + if (!(array && array.length)) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + return baseSlice(array, 0, n < 0 ? 0 : n); + } + + /** + * Creates a slice of `array` with `n` elements taken from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.takeRight([1, 2, 3]); + * // => [3] + * + * _.takeRight([1, 2, 3], 2); + * // => [2, 3] + * + * _.takeRight([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.takeRight([1, 2, 3], 0); + * // => [] + */ + function takeRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, n < 0 ? 0 : n, length); + } + + /** + * Creates a slice of `array` with elements taken from the end. Elements are + * taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.takeRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeRightWhile(users, ['active', false]); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.takeRightWhile(users, 'active'); + * // => [] + */ + function takeRightWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), false, true) + : []; + } + + /** + * Creates a slice of `array` with elements taken from the beginning. Elements + * are taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.takeWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matches` iteratee shorthand. + * _.takeWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeWhile(users, ['active', false]); + * // => objects for ['barney', 'fred'] + * + * // The `_.property` iteratee shorthand. + * _.takeWhile(users, 'active'); + * // => [] + */ + function takeWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3)) + : []; + } + + /** + * Creates an array of unique values, in order, from all given arrays using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.union([2], [1, 2]); + * // => [2, 1] + */ + var union = baseRest(function(arrays) { + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true)); + }); + + /** + * This method is like `_.union` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which uniqueness is computed. Result values are chosen from the first + * array in which the value occurs. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.unionBy([2.1], [1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + var unionBy = baseRest(function(arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)); + }); + + /** + * This method is like `_.union` except that it accepts `comparator` which + * is invoked to compare elements of `arrays`. Result values are chosen from + * the first array in which the value occurs. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.unionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var unionWith = baseRest(function(arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator); + }); + + /** + * Creates a duplicate-free version of an array, using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons, in which only the first occurrence of each element + * is kept. The order of result values is determined by the order they occur + * in the array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniq([2, 1, 2]); + * // => [2, 1] + */ + function uniq(array) { + return (array && array.length) ? baseUniq(array) : []; + } + + /** + * This method is like `_.uniq` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the criterion by which + * uniqueness is computed. The order of result values is determined by the + * order they occur in the array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniqBy([2.1, 1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + function uniqBy(array, iteratee) { + return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : []; + } + + /** + * This method is like `_.uniq` except that it accepts `comparator` which + * is invoked to compare elements of `array`. The order of result values is + * determined by the order they occur in the array.The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.uniqWith(objects, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }] + */ + function uniqWith(array, comparator) { + comparator = typeof comparator == 'function' ? comparator : undefined; + return (array && array.length) ? baseUniq(array, undefined, comparator) : []; + } + + /** + * This method is like `_.zip` except that it accepts an array of grouped + * elements and creates an array regrouping the elements to their pre-zip + * configuration. + * + * @static + * @memberOf _ + * @since 1.2.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + * + * _.unzip(zipped); + * // => [['a', 'b'], [1, 2], [true, false]] + */ + function unzip(array) { + if (!(array && array.length)) { + return []; + } + var length = 0; + array = arrayFilter(array, function(group) { + if (isArrayLikeObject(group)) { + length = nativeMax(group.length, length); + return true; + } + }); + return baseTimes(length, function(index) { + return arrayMap(array, baseProperty(index)); + }); + } + + /** + * This method is like `_.unzip` except that it accepts `iteratee` to specify + * how regrouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @param {Function} [iteratee=_.identity] The function to combine + * regrouped values. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip([1, 2], [10, 20], [100, 200]); + * // => [[1, 10, 100], [2, 20, 200]] + * + * _.unzipWith(zipped, _.add); + * // => [3, 30, 300] + */ + function unzipWith(array, iteratee) { + if (!(array && array.length)) { + return []; + } + var result = unzip(array); + if (iteratee == null) { + return result; + } + return arrayMap(result, function(group) { + return apply(iteratee, undefined, group); + }); + } + + /** + * Creates an array excluding all given values using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.pull`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...*} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.xor + * @example + * + * _.without([2, 1, 2, 3], 1, 2); + * // => [3] + */ + var without = baseRest(function(array, values) { + return isArrayLikeObject(array) + ? baseDifference(array, values) + : []; + }); + + /** + * Creates an array of unique values that is the + * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference) + * of the given arrays. The order of result values is determined by the order + * they occur in the arrays. + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.without + * @example + * + * _.xor([2, 1], [2, 3]); + * // => [1, 3] + */ + var xor = baseRest(function(arrays) { + return baseXor(arrayFilter(arrays, isArrayLikeObject)); + }); + + /** + * This method is like `_.xor` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which by which they're compared. The order of result values is determined + * by the order they occur in the arrays. The iteratee is invoked with one + * argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2, 3.4] + * + * // The `_.property` iteratee shorthand. + * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var xorBy = baseRest(function(arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2)); + }); + + /** + * This method is like `_.xor` except that it accepts `comparator` which is + * invoked to compare elements of `arrays`. The order of result values is + * determined by the order they occur in the arrays. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.xorWith(objects, others, _.isEqual); + * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var xorWith = baseRest(function(arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator); + }); + + /** + * Creates an array of grouped elements, the first of which contains the + * first elements of the given arrays, the second of which contains the + * second elements of the given arrays, and so on. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + */ + var zip = baseRest(unzip); + + /** + * This method is like `_.fromPairs` except that it accepts two arrays, + * one of property identifiers and one of corresponding values. + * + * @static + * @memberOf _ + * @since 0.4.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObject(['a', 'b'], [1, 2]); + * // => { 'a': 1, 'b': 2 } + */ + function zipObject(props, values) { + return baseZipObject(props || [], values || [], assignValue); + } + + /** + * This method is like `_.zipObject` except that it supports property paths. + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]); + * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } } + */ + function zipObjectDeep(props, values) { + return baseZipObject(props || [], values || [], baseSet); + } + + /** + * This method is like `_.zip` except that it accepts `iteratee` to specify + * how grouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @param {Function} [iteratee=_.identity] The function to combine + * grouped values. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) { + * return a + b + c; + * }); + * // => [111, 222] + */ + var zipWith = baseRest(function(arrays) { + var length = arrays.length, + iteratee = length > 1 ? arrays[length - 1] : undefined; + + iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined; + return unzipWith(arrays, iteratee); + }); + + /*------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` wrapper instance that wraps `value` with explicit method + * chain sequences enabled. The result of such sequences must be unwrapped + * with `_#value`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Seq + * @param {*} value The value to wrap. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'pebbles', 'age': 1 } + * ]; + * + * var youngest = _ + * .chain(users) + * .sortBy('age') + * .map(function(o) { + * return o.user + ' is ' + o.age; + * }) + * .head() + * .value(); + * // => 'pebbles is 1' + */ + function chain(value) { + var result = lodash(value); + result.__chain__ = true; + return result; + } + + /** + * This method invokes `interceptor` and returns `value`. The interceptor + * is invoked with one argument; (value). The purpose of this method is to + * "tap into" a method chain sequence in order to modify intermediate results. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns `value`. + * @example + * + * _([1, 2, 3]) + * .tap(function(array) { + * // Mutate input array. + * array.pop(); + * }) + * .reverse() + * .value(); + * // => [2, 1] + */ + function tap(value, interceptor) { + interceptor(value); + return value; + } + + /** + * This method is like `_.tap` except that it returns the result of `interceptor`. + * The purpose of this method is to "pass thru" values replacing intermediate + * results in a method chain sequence. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns the result of `interceptor`. + * @example + * + * _(' abc ') + * .chain() + * .trim() + * .thru(function(value) { + * return [value]; + * }) + * .value(); + * // => ['abc'] + */ + function thru(value, interceptor) { + return interceptor(value); + } + + /** + * This method is the wrapper version of `_.at`. + * + * @name at + * @memberOf _ + * @since 1.0.0 + * @category Seq + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _(object).at(['a[0].b.c', 'a[1]']).value(); + * // => [3, 4] + */ + var wrapperAt = flatRest(function(paths) { + var length = paths.length, + start = length ? paths[0] : 0, + value = this.__wrapped__, + interceptor = function(object) { return baseAt(object, paths); }; + + if (length > 1 || this.__actions__.length || + !(value instanceof LazyWrapper) || !isIndex(start)) { + return this.thru(interceptor); + } + value = value.slice(start, +start + (length ? 1 : 0)); + value.__actions__.push({ + 'func': thru, + 'args': [interceptor], + 'thisArg': undefined + }); + return new LodashWrapper(value, this.__chain__).thru(function(array) { + if (length && !array.length) { + array.push(undefined); + } + return array; + }); + }); + + /** + * Creates a `lodash` wrapper instance with explicit method chain sequences enabled. + * + * @name chain + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 } + * ]; + * + * // A sequence without explicit chaining. + * _(users).head(); + * // => { 'user': 'barney', 'age': 36 } + * + * // A sequence with explicit chaining. + * _(users) + * .chain() + * .head() + * .pick('user') + * .value(); + * // => { 'user': 'barney' } + */ + function wrapperChain() { + return chain(this); + } + + /** + * Executes the chain sequence and returns the wrapped result. + * + * @name commit + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2]; + * var wrapped = _(array).push(3); + * + * console.log(array); + * // => [1, 2] + * + * wrapped = wrapped.commit(); + * console.log(array); + * // => [1, 2, 3] + * + * wrapped.last(); + * // => 3 + * + * console.log(array); + * // => [1, 2, 3] + */ + function wrapperCommit() { + return new LodashWrapper(this.value(), this.__chain__); + } + + /** + * Gets the next value on a wrapped object following the + * [iterator protocol](https://mdn.io/iteration_protocols#iterator). + * + * @name next + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the next iterator value. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped.next(); + * // => { 'done': false, 'value': 1 } + * + * wrapped.next(); + * // => { 'done': false, 'value': 2 } + * + * wrapped.next(); + * // => { 'done': true, 'value': undefined } + */ + function wrapperNext() { + if (this.__values__ === undefined) { + this.__values__ = toArray(this.value()); + } + var done = this.__index__ >= this.__values__.length, + value = done ? undefined : this.__values__[this.__index__++]; + + return { 'done': done, 'value': value }; + } + + /** + * Enables the wrapper to be iterable. + * + * @name Symbol.iterator + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the wrapper object. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped[Symbol.iterator]() === wrapped; + * // => true + * + * Array.from(wrapped); + * // => [1, 2] + */ + function wrapperToIterator() { + return this; + } + + /** + * Creates a clone of the chain sequence planting `value` as the wrapped value. + * + * @name plant + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @param {*} value The value to plant. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2]).map(square); + * var other = wrapped.plant([3, 4]); + * + * other.value(); + * // => [9, 16] + * + * wrapped.value(); + * // => [1, 4] + */ + function wrapperPlant(value) { + var result, + parent = this; + + while (parent instanceof baseLodash) { + var clone = wrapperClone(parent); + clone.__index__ = 0; + clone.__values__ = undefined; + if (result) { + previous.__wrapped__ = clone; + } else { + result = clone; + } + var previous = clone; + parent = parent.__wrapped__; + } + previous.__wrapped__ = value; + return result; + } + + /** + * This method is the wrapper version of `_.reverse`. + * + * **Note:** This method mutates the wrapped array. + * + * @name reverse + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2, 3]; + * + * _(array).reverse().value() + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function wrapperReverse() { + var value = this.__wrapped__; + if (value instanceof LazyWrapper) { + var wrapped = value; + if (this.__actions__.length) { + wrapped = new LazyWrapper(this); + } + wrapped = wrapped.reverse(); + wrapped.__actions__.push({ + 'func': thru, + 'args': [reverse], + 'thisArg': undefined + }); + return new LodashWrapper(wrapped, this.__chain__); + } + return this.thru(reverse); + } + + /** + * Executes the chain sequence to resolve the unwrapped value. + * + * @name value + * @memberOf _ + * @since 0.1.0 + * @alias toJSON, valueOf + * @category Seq + * @returns {*} Returns the resolved unwrapped value. + * @example + * + * _([1, 2, 3]).value(); + * // => [1, 2, 3] + */ + function wrapperValue() { + return baseWrapperValue(this.__wrapped__, this.__actions__); + } + + /*------------------------------------------------------------------------*/ + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the number of times the key was returned by `iteratee`. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.countBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': 1, '6': 2 } + * + * // The `_.property` iteratee shorthand. + * _.countBy(['one', 'two', 'three'], 'length'); + * // => { '3': 2, '5': 1 } + */ + var countBy = createAggregator(function(result, value, key) { + if (hasOwnProperty.call(result, key)) { + ++result[key]; + } else { + baseAssignValue(result, key, 1); + } + }); + + /** + * Checks if `predicate` returns truthy for **all** elements of `collection`. + * Iteration is stopped once `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * **Note:** This method returns `true` for + * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because + * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of + * elements of empty collections. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + * @example + * + * _.every([true, 1, null, 'yes'], Boolean); + * // => false + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.every(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.every(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.every(users, 'active'); + * // => false + */ + function every(collection, predicate, guard) { + var func = isArray(collection) ? arrayEvery : baseEvery; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Iterates over elements of `collection`, returning an array of all elements + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * **Note:** Unlike `_.remove`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.reject + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * _.filter(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.filter(users, { 'age': 36, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.filter(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.filter(users, 'active'); + * // => objects for ['barney'] + */ + function filter(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Iterates over elements of `collection`, returning the first element + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false }, + * { 'user': 'pebbles', 'age': 1, 'active': true } + * ]; + * + * _.find(users, function(o) { return o.age < 40; }); + * // => object for 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.find(users, { 'age': 1, 'active': true }); + * // => object for 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.find(users, ['active', false]); + * // => object for 'fred' + * + * // The `_.property` iteratee shorthand. + * _.find(users, 'active'); + * // => object for 'barney' + */ + var find = createFind(findIndex); + + /** + * This method is like `_.find` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=collection.length-1] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * _.findLast([1, 2, 3, 4], function(n) { + * return n % 2 == 1; + * }); + * // => 3 + */ + var findLast = createFind(findLastIndex); + + /** + * Creates a flattened array of values by running each element in `collection` + * thru `iteratee` and flattening the mapped results. The iteratee is invoked + * with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [n, n]; + * } + * + * _.flatMap([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMap(collection, iteratee) { + return baseFlatten(map(collection, iteratee), 1); + } + + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDeep([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMapDeep(collection, iteratee) { + return baseFlatten(map(collection, iteratee), INFINITY); + } + + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDepth([1, 2], duplicate, 2); + * // => [[1, 1], [2, 2]] + */ + function flatMapDepth(collection, iteratee, depth) { + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(map(collection, iteratee), depth); + } + + /** + * Iterates over elements of `collection` and invokes `iteratee` for each element. + * The iteratee is invoked with three arguments: (value, index|key, collection). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * **Note:** As with other "Collections" methods, objects with a "length" + * property are iterated like arrays. To avoid this behavior use `_.forIn` + * or `_.forOwn` for object iteration. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias each + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEachRight + * @example + * + * _.forEach([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `1` then `2`. + * + * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forEach(collection, iteratee) { + var func = isArray(collection) ? arrayEach : baseEach; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.forEach` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @alias eachRight + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEach + * @example + * + * _.forEachRight([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `2` then `1`. + */ + function forEachRight(collection, iteratee) { + var func = isArray(collection) ? arrayEachRight : baseEachRight; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The order of grouped values + * is determined by the order they occur in `collection`. The corresponding + * value of each key is an array of elements responsible for generating the + * key. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.groupBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': [4.2], '6': [6.1, 6.3] } + * + * // The `_.property` iteratee shorthand. + * _.groupBy(['one', 'two', 'three'], 'length'); + * // => { '3': ['one', 'two'], '5': ['three'] } + */ + var groupBy = createAggregator(function(result, value, key) { + if (hasOwnProperty.call(result, key)) { + result[key].push(value); + } else { + baseAssignValue(result, key, [value]); + } + }); + + /** + * Checks if `value` is in `collection`. If `collection` is a string, it's + * checked for a substring of `value`, otherwise + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * is used for equality comparisons. If `fromIndex` is negative, it's used as + * the offset from the end of `collection`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {boolean} Returns `true` if `value` is found, else `false`. + * @example + * + * _.includes([1, 2, 3], 1); + * // => true + * + * _.includes([1, 2, 3], 1, 2); + * // => false + * + * _.includes({ 'a': 1, 'b': 2 }, 1); + * // => true + * + * _.includes('abcd', 'bc'); + * // => true + */ + function includes(collection, value, fromIndex, guard) { + collection = isArrayLike(collection) ? collection : values(collection); + fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0; + + var length = collection.length; + if (fromIndex < 0) { + fromIndex = nativeMax(length + fromIndex, 0); + } + return isString(collection) + ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1) + : (!!length && baseIndexOf(collection, value, fromIndex) > -1); + } + + /** + * Invokes the method at `path` of each element in `collection`, returning + * an array of the results of each invoked method. Any additional arguments + * are provided to each invoked method. If `path` is a function, it's invoked + * for, and `this` bound to, each element in `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array|Function|string} path The path of the method to invoke or + * the function invoked per iteration. + * @param {...*} [args] The arguments to invoke each method with. + * @returns {Array} Returns the array of results. + * @example + * + * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort'); + * // => [[1, 5, 7], [1, 2, 3]] + * + * _.invokeMap([123, 456], String.prototype.split, ''); + * // => [['1', '2', '3'], ['4', '5', '6']] + */ + var invokeMap = baseRest(function(collection, path, args) { + var index = -1, + isFunc = typeof path == 'function', + result = isArrayLike(collection) ? Array(collection.length) : []; + + baseEach(collection, function(value) { + result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args); + }); + return result; + }); + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the last element responsible for generating the key. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * var array = [ + * { 'dir': 'left', 'code': 97 }, + * { 'dir': 'right', 'code': 100 } + * ]; + * + * _.keyBy(array, function(o) { + * return String.fromCharCode(o.code); + * }); + * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } + * + * _.keyBy(array, 'dir'); + * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } + */ + var keyBy = createAggregator(function(result, value, key) { + baseAssignValue(result, key, value); + }); + + /** + * Creates an array of values by running each element in `collection` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`. + * + * The guarded methods are: + * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`, + * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`, + * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`, + * `template`, `trim`, `trimEnd`, `trimStart`, and `words` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + * @example + * + * function square(n) { + * return n * n; + * } + * + * _.map([4, 8], square); + * // => [16, 64] + * + * _.map({ 'a': 4, 'b': 8 }, square); + * // => [16, 64] (iteration order is not guaranteed) + * + * var users = [ + * { 'user': 'barney' }, + * { 'user': 'fred' } + * ]; + * + * // The `_.property` iteratee shorthand. + * _.map(users, 'user'); + * // => ['barney', 'fred'] + */ + function map(collection, iteratee) { + var func = isArray(collection) ? arrayMap : baseMap; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.sortBy` except that it allows specifying the sort + * orders of the iteratees to sort by. If `orders` is unspecified, all values + * are sorted in ascending order. Otherwise, specify an order of "desc" for + * descending or "asc" for ascending sort order of corresponding values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]] + * The iteratees to sort by. + * @param {string[]} [orders] The sort orders of `iteratees`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 34 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 36 } + * ]; + * + * // Sort by `user` in ascending order and by `age` in descending order. + * _.orderBy(users, ['user', 'age'], ['asc', 'desc']); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + */ + function orderBy(collection, iteratees, orders, guard) { + if (collection == null) { + return []; + } + if (!isArray(iteratees)) { + iteratees = iteratees == null ? [] : [iteratees]; + } + orders = guard ? undefined : orders; + if (!isArray(orders)) { + orders = orders == null ? [] : [orders]; + } + return baseOrderBy(collection, iteratees, orders); + } + + /** + * Creates an array of elements split into two groups, the first of which + * contains elements `predicate` returns truthy for, the second of which + * contains elements `predicate` returns falsey for. The predicate is + * invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the array of grouped elements. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true }, + * { 'user': 'pebbles', 'age': 1, 'active': false } + * ]; + * + * _.partition(users, function(o) { return o.active; }); + * // => objects for [['fred'], ['barney', 'pebbles']] + * + * // The `_.matches` iteratee shorthand. + * _.partition(users, { 'age': 1, 'active': false }); + * // => objects for [['pebbles'], ['barney', 'fred']] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.partition(users, ['active', false]); + * // => objects for [['barney', 'pebbles'], ['fred']] + * + * // The `_.property` iteratee shorthand. + * _.partition(users, 'active'); + * // => objects for [['fred'], ['barney', 'pebbles']] + */ + var partition = createAggregator(function(result, value, key) { + result[key ? 0 : 1].push(value); + }, function() { return [[], []]; }); + + /** + * Reduces `collection` to a value which is the accumulated result of running + * each element in `collection` thru `iteratee`, where each successive + * invocation is supplied the return value of the previous. If `accumulator` + * is not given, the first element of `collection` is used as the initial + * value. The iteratee is invoked with four arguments: + * (accumulator, value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.reduce`, `_.reduceRight`, and `_.transform`. + * + * The guarded methods are: + * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`, + * and `sortBy` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduceRight + * @example + * + * _.reduce([1, 2], function(sum, n) { + * return sum + n; + * }, 0); + * // => 3 + * + * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * return result; + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed) + */ + function reduce(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduce : baseReduce, + initAccum = arguments.length < 3; + + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach); + } + + /** + * This method is like `_.reduce` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduce + * @example + * + * var array = [[0, 1], [2, 3], [4, 5]]; + * + * _.reduceRight(array, function(flattened, other) { + * return flattened.concat(other); + * }, []); + * // => [4, 5, 2, 3, 0, 1] + */ + function reduceRight(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduceRight : baseReduce, + initAccum = arguments.length < 3; + + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight); + } + + /** + * The opposite of `_.filter`; this method returns the elements of `collection` + * that `predicate` does **not** return truthy for. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.filter + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true } + * ]; + * + * _.reject(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.reject(users, { 'age': 40, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.reject(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.reject(users, 'active'); + * // => objects for ['barney'] + */ + function reject(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, negate(getIteratee(predicate, 3))); + } + + /** + * Gets a random element from `collection`. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + * @example + * + * _.sample([1, 2, 3, 4]); + * // => 2 + */ + function sample(collection) { + var func = isArray(collection) ? arraySample : baseSample; + return func(collection); + } + + /** + * Gets `n` random elements at unique keys from `collection` up to the + * size of `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @param {number} [n=1] The number of elements to sample. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the random elements. + * @example + * + * _.sampleSize([1, 2, 3], 2); + * // => [3, 1] + * + * _.sampleSize([1, 2, 3], 4); + * // => [2, 3, 1] + */ + function sampleSize(collection, n, guard) { + if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) { + n = 1; + } else { + n = toInteger(n); + } + var func = isArray(collection) ? arraySampleSize : baseSampleSize; + return func(collection, n); + } + + /** + * Creates an array of shuffled values, using a version of the + * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + * @example + * + * _.shuffle([1, 2, 3, 4]); + * // => [4, 1, 3, 2] + */ + function shuffle(collection) { + var func = isArray(collection) ? arrayShuffle : baseShuffle; + return func(collection); + } + + /** + * Gets the size of `collection` by returning its length for array-like + * values or the number of own enumerable string keyed properties for objects. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @returns {number} Returns the collection size. + * @example + * + * _.size([1, 2, 3]); + * // => 3 + * + * _.size({ 'a': 1, 'b': 2 }); + * // => 2 + * + * _.size('pebbles'); + * // => 7 + */ + function size(collection) { + if (collection == null) { + return 0; + } + if (isArrayLike(collection)) { + return isString(collection) ? stringSize(collection) : collection.length; + } + var tag = getTag(collection); + if (tag == mapTag || tag == setTag) { + return collection.size; + } + return baseKeys(collection).length; + } + + /** + * Checks if `predicate` returns truthy for **any** element of `collection`. + * Iteration is stopped once `predicate` returns truthy. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + * @example + * + * _.some([null, 0, 'yes', false], Boolean); + * // => true + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.some(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.some(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.some(users, 'active'); + * // => true + */ + function some(collection, predicate, guard) { + var func = isArray(collection) ? arraySome : baseSome; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Creates an array of elements, sorted in ascending order by the results of + * running each element in a collection thru each iteratee. This method + * performs a stable sort, that is, it preserves the original sort order of + * equal elements. The iteratees are invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {...(Function|Function[])} [iteratees=[_.identity]] + * The iteratees to sort by. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 34 } + * ]; + * + * _.sortBy(users, [function(o) { return o.user; }]); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + * + * _.sortBy(users, ['user', 'age']); + * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]] + */ + var sortBy = baseRest(function(collection, iteratees) { + if (collection == null) { + return []; + } + var length = iteratees.length; + if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) { + iteratees = []; + } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) { + iteratees = [iteratees[0]]; + } + return baseOrderBy(collection, baseFlatten(iteratees, 1), []); + }); + + /*------------------------------------------------------------------------*/ + + /** + * Gets the timestamp of the number of milliseconds that have elapsed since + * the Unix epoch (1 January 1970 00:00:00 UTC). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Date + * @returns {number} Returns the timestamp. + * @example + * + * _.defer(function(stamp) { + * console.log(_.now() - stamp); + * }, _.now()); + * // => Logs the number of milliseconds it took for the deferred invocation. + */ + var now = ctxNow || function() { + return root.Date.now(); + }; + + /*------------------------------------------------------------------------*/ + + /** + * The opposite of `_.before`; this method creates a function that invokes + * `func` once it's called `n` or more times. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {number} n The number of calls before `func` is invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var saves = ['profile', 'settings']; + * + * var done = _.after(saves.length, function() { + * console.log('done saving!'); + * }); + * + * _.forEach(saves, function(type) { + * asyncSave({ 'type': type, 'complete': done }); + * }); + * // => Logs 'done saving!' after the two async saves have completed. + */ + function after(n, func) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + n = toInteger(n); + return function() { + if (--n < 1) { + return func.apply(this, arguments); + } + }; + } + + /** + * Creates a function that invokes `func`, with up to `n` arguments, + * ignoring any additional arguments. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @param {number} [n=func.length] The arity cap. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.ary(parseInt, 1)); + * // => [6, 8, 10] + */ + function ary(func, n, guard) { + n = guard ? undefined : n; + n = (func && n == null) ? func.length : n; + return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n); + } + + /** + * Creates a function that invokes `func`, with the `this` binding and arguments + * of the created function, while it's called less than `n` times. Subsequent + * calls to the created function return the result of the last `func` invocation. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {number} n The number of calls at which `func` is no longer invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * jQuery(element).on('click', _.before(5, addContactToList)); + * // => Allows adding up to 4 contacts to the list. + */ + function before(n, func) { + var result; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + n = toInteger(n); + return function() { + if (--n > 0) { + result = func.apply(this, arguments); + } + if (n <= 1) { + func = undefined; + } + return result; + }; + } + + /** + * Creates a function that invokes `func` with the `this` binding of `thisArg` + * and `partials` prepended to the arguments it receives. + * + * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for partially applied arguments. + * + * **Note:** Unlike native `Function#bind`, this method doesn't set the "length" + * property of bound functions. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to bind. + * @param {*} thisArg The `this` binding of `func`. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * function greet(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * + * var object = { 'user': 'fred' }; + * + * var bound = _.bind(greet, object, 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * // Bound with placeholders. + * var bound = _.bind(greet, object, _, '!'); + * bound('hi'); + * // => 'hi fred!' + */ + var bind = baseRest(function(func, thisArg, partials) { + var bitmask = WRAP_BIND_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bind)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(func, bitmask, thisArg, partials, holders); + }); + + /** + * Creates a function that invokes the method at `object[key]` with `partials` + * prepended to the arguments it receives. + * + * This method differs from `_.bind` by allowing bound functions to reference + * methods that may be redefined or don't yet exist. See + * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern) + * for more details. + * + * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Function + * @param {Object} object The object to invoke the method on. + * @param {string} key The key of the method. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * var object = { + * 'user': 'fred', + * 'greet': function(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * }; + * + * var bound = _.bindKey(object, 'greet', 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * object.greet = function(greeting, punctuation) { + * return greeting + 'ya ' + this.user + punctuation; + * }; + * + * bound('!'); + * // => 'hiya fred!' + * + * // Bound with placeholders. + * var bound = _.bindKey(object, 'greet', _, '!'); + * bound('hi'); + * // => 'hiya fred!' + */ + var bindKey = baseRest(function(object, key, partials) { + var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bindKey)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(key, bitmask, object, partials, holders); + }); + + /** + * Creates a function that accepts arguments of `func` and either invokes + * `func` returning its result, if at least `arity` number of arguments have + * been provided, or returns a function that accepts the remaining `func` + * arguments, and so on. The arity of `func` may be specified if `func.length` + * is not sufficient. + * + * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curry(abc); + * + * curried(1)(2)(3); + * // => [1, 2, 3] + * + * curried(1, 2)(3); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(1)(_, 3)(2); + * // => [1, 2, 3] + */ + function curry(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity); + result.placeholder = curry.placeholder; + return result; + } + + /** + * This method is like `_.curry` except that arguments are applied to `func` + * in the manner of `_.partialRight` instead of `_.partial`. + * + * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curryRight(abc); + * + * curried(3)(2)(1); + * // => [1, 2, 3] + * + * curried(2, 3)(1); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(3)(1, _)(2); + * // => [1, 2, 3] + */ + function curryRight(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity); + result.placeholder = curryRight.placeholder; + return result; + } + + /** + * Creates a debounced function that delays invoking `func` until after `wait` + * milliseconds have elapsed since the last time the debounced function was + * invoked. The debounced function comes with a `cancel` method to cancel + * delayed `func` invocations and a `flush` method to immediately invoke them. + * Provide `options` to indicate whether `func` should be invoked on the + * leading and/or trailing edge of the `wait` timeout. The `func` is invoked + * with the last arguments provided to the debounced function. Subsequent + * calls to the debounced function return the result of the last `func` + * invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the debounced function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.debounce` and `_.throttle`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to debounce. + * @param {number} [wait=0] The number of milliseconds to delay. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=false] + * Specify invoking on the leading edge of the timeout. + * @param {number} [options.maxWait] + * The maximum time `func` is allowed to be delayed before it's invoked. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new debounced function. + * @example + * + * // Avoid costly calculations while the window size is in flux. + * jQuery(window).on('resize', _.debounce(calculateLayout, 150)); + * + * // Invoke `sendMail` when clicked, debouncing subsequent calls. + * jQuery(element).on('click', _.debounce(sendMail, 300, { + * 'leading': true, + * 'trailing': false + * })); + * + * // Ensure `batchLog` is invoked once after 1 second of debounced calls. + * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 }); + * var source = new EventSource('/stream'); + * jQuery(source).on('message', debounced); + * + * // Cancel the trailing debounced invocation. + * jQuery(window).on('popstate', debounced.cancel); + */ + function debounce(func, wait, options) { + var lastArgs, + lastThis, + maxWait, + result, + timerId, + lastCallTime, + lastInvokeTime = 0, + leading = false, + maxing = false, + trailing = true; + + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + wait = toNumber(wait) || 0; + if (isObject(options)) { + leading = !!options.leading; + maxing = 'maxWait' in options; + maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } + + function invokeFunc(time) { + var args = lastArgs, + thisArg = lastThis; + + lastArgs = lastThis = undefined; + lastInvokeTime = time; + result = func.apply(thisArg, args); + return result; + } + + function leadingEdge(time) { + // Reset any `maxWait` timer. + lastInvokeTime = time; + // Start the timer for the trailing edge. + timerId = setTimeout(timerExpired, wait); + // Invoke the leading edge. + return leading ? invokeFunc(time) : result; + } + + function remainingWait(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime, + timeWaiting = wait - timeSinceLastCall; + + return maxing + ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) + : timeWaiting; + } + + function shouldInvoke(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime; + + // Either this is the first call, activity has stopped and we're at the + // trailing edge, the system time has gone backwards and we're treating + // it as the trailing edge, or we've hit the `maxWait` limit. + return (lastCallTime === undefined || (timeSinceLastCall >= wait) || + (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait)); + } + + function timerExpired() { + var time = now(); + if (shouldInvoke(time)) { + return trailingEdge(time); + } + // Restart the timer. + timerId = setTimeout(timerExpired, remainingWait(time)); + } + + function trailingEdge(time) { + timerId = undefined; + + // Only invoke if we have `lastArgs` which means `func` has been + // debounced at least once. + if (trailing && lastArgs) { + return invokeFunc(time); + } + lastArgs = lastThis = undefined; + return result; + } + + function cancel() { + if (timerId !== undefined) { + clearTimeout(timerId); + } + lastInvokeTime = 0; + lastArgs = lastCallTime = lastThis = timerId = undefined; + } + + function flush() { + return timerId === undefined ? result : trailingEdge(now()); + } + + function debounced() { + var time = now(), + isInvoking = shouldInvoke(time); + + lastArgs = arguments; + lastThis = this; + lastCallTime = time; + + if (isInvoking) { + if (timerId === undefined) { + return leadingEdge(lastCallTime); + } + if (maxing) { + // Handle invocations in a tight loop. + clearTimeout(timerId); + timerId = setTimeout(timerExpired, wait); + return invokeFunc(lastCallTime); + } + } + if (timerId === undefined) { + timerId = setTimeout(timerExpired, wait); + } + return result; + } + debounced.cancel = cancel; + debounced.flush = flush; + return debounced; + } + + /** + * Defers invoking the `func` until the current call stack has cleared. Any + * additional arguments are provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to defer. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.defer(function(text) { + * console.log(text); + * }, 'deferred'); + * // => Logs 'deferred' after one millisecond. + */ + var defer = baseRest(function(func, args) { + return baseDelay(func, 1, args); + }); + + /** + * Invokes `func` after `wait` milliseconds. Any additional arguments are + * provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.delay(function(text) { + * console.log(text); + * }, 1000, 'later'); + * // => Logs 'later' after one second. + */ + var delay = baseRest(function(func, wait, args) { + return baseDelay(func, toNumber(wait) || 0, args); + }); + + /** + * Creates a function that invokes `func` with arguments reversed. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to flip arguments for. + * @returns {Function} Returns the new flipped function. + * @example + * + * var flipped = _.flip(function() { + * return _.toArray(arguments); + * }); + * + * flipped('a', 'b', 'c', 'd'); + * // => ['d', 'c', 'b', 'a'] + */ + function flip(func) { + return createWrap(func, WRAP_FLIP_FLAG); + } + + /** + * Creates a function that memoizes the result of `func`. If `resolver` is + * provided, it determines the cache key for storing the result based on the + * arguments provided to the memoized function. By default, the first argument + * provided to the memoized function is used as the map cache key. The `func` + * is invoked with the `this` binding of the memoized function. + * + * **Note:** The cache is exposed as the `cache` property on the memoized + * function. Its creation may be customized by replacing the `_.memoize.Cache` + * constructor with one whose instances implement the + * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object) + * method interface of `clear`, `delete`, `get`, `has`, and `set`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to have its output memoized. + * @param {Function} [resolver] The function to resolve the cache key. + * @returns {Function} Returns the new memoized function. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * var other = { 'c': 3, 'd': 4 }; + * + * var values = _.memoize(_.values); + * values(object); + * // => [1, 2] + * + * values(other); + * // => [3, 4] + * + * object.a = 2; + * values(object); + * // => [1, 2] + * + * // Modify the result cache. + * values.cache.set(object, ['a', 'b']); + * values(object); + * // => ['a', 'b'] + * + * // Replace `_.memoize.Cache`. + * _.memoize.Cache = WeakMap; + */ + function memoize(func, resolver) { + if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) { + throw new TypeError(FUNC_ERROR_TEXT); + } + var memoized = function() { + var args = arguments, + key = resolver ? resolver.apply(this, args) : args[0], + cache = memoized.cache; + + if (cache.has(key)) { + return cache.get(key); + } + var result = func.apply(this, args); + memoized.cache = cache.set(key, result) || cache; + return result; + }; + memoized.cache = new (memoize.Cache || MapCache); + return memoized; + } + + // Expose `MapCache`. + memoize.Cache = MapCache; + + /** + * Creates a function that negates the result of the predicate `func`. The + * `func` predicate is invoked with the `this` binding and arguments of the + * created function. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} predicate The predicate to negate. + * @returns {Function} Returns the new negated function. + * @example + * + * function isEven(n) { + * return n % 2 == 0; + * } + * + * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)); + * // => [1, 3, 5] + */ + function negate(predicate) { + if (typeof predicate != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return function() { + var args = arguments; + switch (args.length) { + case 0: return !predicate.call(this); + case 1: return !predicate.call(this, args[0]); + case 2: return !predicate.call(this, args[0], args[1]); + case 3: return !predicate.call(this, args[0], args[1], args[2]); + } + return !predicate.apply(this, args); + }; + } + + /** + * Creates a function that is restricted to invoking `func` once. Repeat calls + * to the function return the value of the first invocation. The `func` is + * invoked with the `this` binding and arguments of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var initialize = _.once(createApplication); + * initialize(); + * initialize(); + * // => `createApplication` is invoked once + */ + function once(func) { + return before(2, func); + } + + /** + * Creates a function that invokes `func` with its arguments transformed. + * + * @static + * @since 4.0.0 + * @memberOf _ + * @category Function + * @param {Function} func The function to wrap. + * @param {...(Function|Function[])} [transforms=[_.identity]] + * The argument transforms. + * @returns {Function} Returns the new function. + * @example + * + * function doubled(n) { + * return n * 2; + * } + * + * function square(n) { + * return n * n; + * } + * + * var func = _.overArgs(function(x, y) { + * return [x, y]; + * }, [square, doubled]); + * + * func(9, 3); + * // => [81, 6] + * + * func(10, 5); + * // => [100, 10] + */ + var overArgs = castRest(function(func, transforms) { + transforms = (transforms.length == 1 && isArray(transforms[0])) + ? arrayMap(transforms[0], baseUnary(getIteratee())) + : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee())); + + var funcsLength = transforms.length; + return baseRest(function(args) { + var index = -1, + length = nativeMin(args.length, funcsLength); + + while (++index < length) { + args[index] = transforms[index].call(this, args[index]); + } + return apply(func, this, args); + }); + }); + + /** + * Creates a function that invokes `func` with `partials` prepended to the + * arguments it receives. This method is like `_.bind` except it does **not** + * alter the `this` binding. + * + * The `_.partial.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 0.2.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var sayHelloTo = _.partial(greet, 'hello'); + * sayHelloTo('fred'); + * // => 'hello fred' + * + * // Partially applied with placeholders. + * var greetFred = _.partial(greet, _, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + */ + var partial = baseRest(function(func, partials) { + var holders = replaceHolders(partials, getHolder(partial)); + return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders); + }); + + /** + * This method is like `_.partial` except that partially applied arguments + * are appended to the arguments it receives. + * + * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var greetFred = _.partialRight(greet, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + * + * // Partially applied with placeholders. + * var sayHelloTo = _.partialRight(greet, 'hello', _); + * sayHelloTo('fred'); + * // => 'hello fred' + */ + var partialRight = baseRest(function(func, partials) { + var holders = replaceHolders(partials, getHolder(partialRight)); + return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders); + }); + + /** + * Creates a function that invokes `func` with arguments arranged according + * to the specified `indexes` where the argument value at the first index is + * provided as the first argument, the argument value at the second index is + * provided as the second argument, and so on. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to rearrange arguments for. + * @param {...(number|number[])} indexes The arranged argument indexes. + * @returns {Function} Returns the new function. + * @example + * + * var rearged = _.rearg(function(a, b, c) { + * return [a, b, c]; + * }, [2, 0, 1]); + * + * rearged('b', 'c', 'a') + * // => ['a', 'b', 'c'] + */ + var rearg = flatRest(function(func, indexes) { + return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes); + }); + + /** + * Creates a function that invokes `func` with the `this` binding of the + * created function and arguments from `start` and beyond provided as + * an array. + * + * **Note:** This method is based on the + * [rest parameter](https://mdn.io/rest_parameters). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.rest(function(what, names) { + * return what + ' ' + _.initial(names).join(', ') + + * (_.size(names) > 1 ? ', & ' : '') + _.last(names); + * }); + * + * say('hello', 'fred', 'barney', 'pebbles'); + * // => 'hello fred, barney, & pebbles' + */ + function rest(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start === undefined ? start : toInteger(start); + return baseRest(func, start); + } + + /** + * Creates a function that invokes `func` with the `this` binding of the + * create function and an array of arguments much like + * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply). + * + * **Note:** This method is based on the + * [spread operator](https://mdn.io/spread_operator). + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Function + * @param {Function} func The function to spread arguments over. + * @param {number} [start=0] The start position of the spread. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.spread(function(who, what) { + * return who + ' says ' + what; + * }); + * + * say(['fred', 'hello']); + * // => 'fred says hello' + * + * var numbers = Promise.all([ + * Promise.resolve(40), + * Promise.resolve(36) + * ]); + * + * numbers.then(_.spread(function(x, y) { + * return x + y; + * })); + * // => a Promise of 76 + */ + function spread(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start == null ? 0 : nativeMax(toInteger(start), 0); + return baseRest(function(args) { + var array = args[start], + otherArgs = castSlice(args, 0, start); + + if (array) { + arrayPush(otherArgs, array); + } + return apply(func, this, otherArgs); + }); + } + + /** + * Creates a throttled function that only invokes `func` at most once per + * every `wait` milliseconds. The throttled function comes with a `cancel` + * method to cancel delayed `func` invocations and a `flush` method to + * immediately invoke them. Provide `options` to indicate whether `func` + * should be invoked on the leading and/or trailing edge of the `wait` + * timeout. The `func` is invoked with the last arguments provided to the + * throttled function. Subsequent calls to the throttled function return the + * result of the last `func` invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the throttled function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.throttle` and `_.debounce`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to throttle. + * @param {number} [wait=0] The number of milliseconds to throttle invocations to. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=true] + * Specify invoking on the leading edge of the timeout. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new throttled function. + * @example + * + * // Avoid excessively updating the position while scrolling. + * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); + * + * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes. + * var throttled = _.throttle(renewToken, 300000, { 'trailing': false }); + * jQuery(element).on('click', throttled); + * + * // Cancel the trailing throttled invocation. + * jQuery(window).on('popstate', throttled.cancel); + */ + function throttle(func, wait, options) { + var leading = true, + trailing = true; + + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (isObject(options)) { + leading = 'leading' in options ? !!options.leading : leading; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } + return debounce(func, wait, { + 'leading': leading, + 'maxWait': wait, + 'trailing': trailing + }); + } + + /** + * Creates a function that accepts up to one argument, ignoring any + * additional arguments. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.unary(parseInt)); + * // => [6, 8, 10] + */ + function unary(func) { + return ary(func, 1); + } + + /** + * Creates a function that provides `value` to `wrapper` as its first + * argument. Any additional arguments provided to the function are appended + * to those provided to the `wrapper`. The wrapper is invoked with the `this` + * binding of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {*} value The value to wrap. + * @param {Function} [wrapper=identity] The wrapper function. + * @returns {Function} Returns the new function. + * @example + * + * var p = _.wrap(_.escape, function(func, text) { + * return '

' + func(text) + '

'; + * }); + * + * p('fred, barney, & pebbles'); + * // => '

fred, barney, & pebbles

' + */ + function wrap(value, wrapper) { + return partial(castFunction(wrapper), value); + } + + /*------------------------------------------------------------------------*/ + + /** + * Casts `value` as an array if it's not one. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Lang + * @param {*} value The value to inspect. + * @returns {Array} Returns the cast array. + * @example + * + * _.castArray(1); + * // => [1] + * + * _.castArray({ 'a': 1 }); + * // => [{ 'a': 1 }] + * + * _.castArray('abc'); + * // => ['abc'] + * + * _.castArray(null); + * // => [null] + * + * _.castArray(undefined); + * // => [undefined] + * + * _.castArray(); + * // => [] + * + * var array = [1, 2, 3]; + * console.log(_.castArray(array) === array); + * // => true + */ + function castArray() { + if (!arguments.length) { + return []; + } + var value = arguments[0]; + return isArray(value) ? value : [value]; + } + + /** + * Creates a shallow clone of `value`. + * + * **Note:** This method is loosely based on the + * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm) + * and supports cloning arrays, array buffers, booleans, date objects, maps, + * numbers, `Object` objects, regexes, sets, strings, symbols, and typed + * arrays. The own enumerable properties of `arguments` objects are cloned + * as plain objects. An empty object is returned for uncloneable values such + * as error objects, functions, DOM nodes, and WeakMaps. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to clone. + * @returns {*} Returns the cloned value. + * @see _.cloneDeep + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var shallow = _.clone(objects); + * console.log(shallow[0] === objects[0]); + * // => true + */ + function clone(value) { + return baseClone(value, CLONE_SYMBOLS_FLAG); + } + + /** + * This method is like `_.clone` except that it accepts `customizer` which + * is invoked to produce the cloned value. If `customizer` returns `undefined`, + * cloning is handled by the method instead. The `customizer` is invoked with + * up to four arguments; (value [, index|key, object, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the cloned value. + * @see _.cloneDeepWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(false); + * } + * } + * + * var el = _.cloneWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 0 + */ + function cloneWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_SYMBOLS_FLAG, customizer); + } + + /** + * This method is like `_.clone` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @returns {*} Returns the deep cloned value. + * @see _.clone + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var deep = _.cloneDeep(objects); + * console.log(deep[0] === objects[0]); + * // => false + */ + function cloneDeep(value) { + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG); + } + + /** + * This method is like `_.cloneWith` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the deep cloned value. + * @see _.cloneWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(true); + * } + * } + * + * var el = _.cloneDeepWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 20 + */ + function cloneDeepWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer); + } + + /** + * Checks if `object` conforms to `source` by invoking the predicate + * properties of `source` with the corresponding property values of `object`. + * + * **Note:** This method is equivalent to `_.conforms` when `source` is + * partially applied. + * + * @static + * @memberOf _ + * @since 4.14.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.conformsTo(object, { 'b': function(n) { return n > 1; } }); + * // => true + * + * _.conformsTo(object, { 'b': function(n) { return n > 2; } }); + * // => false + */ + function conformsTo(object, source) { + return source == null || baseConformsTo(object, source, keys(source)); + } + + /** + * Performs a + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * comparison between two values to determine if they are equivalent. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.eq(object, object); + * // => true + * + * _.eq(object, other); + * // => false + * + * _.eq('a', 'a'); + * // => true + * + * _.eq('a', Object('a')); + * // => false + * + * _.eq(NaN, NaN); + * // => true + */ + function eq(value, other) { + return value === other || (value !== value && other !== other); + } + + /** + * Checks if `value` is greater than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + * @see _.lt + * @example + * + * _.gt(3, 1); + * // => true + * + * _.gt(3, 3); + * // => false + * + * _.gt(1, 3); + * // => false + */ + var gt = createRelationalOperation(baseGt); + + /** + * Checks if `value` is greater than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than or equal to + * `other`, else `false`. + * @see _.lte + * @example + * + * _.gte(3, 1); + * // => true + * + * _.gte(3, 3); + * // => true + * + * _.gte(1, 3); + * // => false + */ + var gte = createRelationalOperation(function(value, other) { + return value >= other; + }); + + /** + * Checks if `value` is likely an `arguments` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + * else `false`. + * @example + * + * _.isArguments(function() { return arguments; }()); + * // => true + * + * _.isArguments([1, 2, 3]); + * // => false + */ + var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) { + return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && + !propertyIsEnumerable.call(value, 'callee'); + }; + + /** + * Checks if `value` is classified as an `Array` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array, else `false`. + * @example + * + * _.isArray([1, 2, 3]); + * // => true + * + * _.isArray(document.body.children); + * // => false + * + * _.isArray('abc'); + * // => false + * + * _.isArray(_.noop); + * // => false + */ + var isArray = Array.isArray; + + /** + * Checks if `value` is classified as an `ArrayBuffer` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + * @example + * + * _.isArrayBuffer(new ArrayBuffer(2)); + * // => true + * + * _.isArrayBuffer(new Array(2)); + * // => false + */ + var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer; + + /** + * Checks if `value` is array-like. A value is considered array-like if it's + * not a function and has a `value.length` that's an integer greater than or + * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is array-like, else `false`. + * @example + * + * _.isArrayLike([1, 2, 3]); + * // => true + * + * _.isArrayLike(document.body.children); + * // => true + * + * _.isArrayLike('abc'); + * // => true + * + * _.isArrayLike(_.noop); + * // => false + */ + function isArrayLike(value) { + return value != null && isLength(value.length) && !isFunction(value); + } + + /** + * This method is like `_.isArrayLike` except that it also checks if `value` + * is an object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array-like object, + * else `false`. + * @example + * + * _.isArrayLikeObject([1, 2, 3]); + * // => true + * + * _.isArrayLikeObject(document.body.children); + * // => true + * + * _.isArrayLikeObject('abc'); + * // => false + * + * _.isArrayLikeObject(_.noop); + * // => false + */ + function isArrayLikeObject(value) { + return isObjectLike(value) && isArrayLike(value); + } + + /** + * Checks if `value` is classified as a boolean primitive or object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a boolean, else `false`. + * @example + * + * _.isBoolean(false); + * // => true + * + * _.isBoolean(null); + * // => false + */ + function isBoolean(value) { + return value === true || value === false || + (isObjectLike(value) && baseGetTag(value) == boolTag); + } + + /** + * Checks if `value` is a buffer. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. + * @example + * + * _.isBuffer(new Buffer(2)); + * // => true + * + * _.isBuffer(new Uint8Array(2)); + * // => false + */ + var isBuffer = nativeIsBuffer || stubFalse; + + /** + * Checks if `value` is classified as a `Date` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + * @example + * + * _.isDate(new Date); + * // => true + * + * _.isDate('Mon April 23 2012'); + * // => false + */ + var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate; + + /** + * Checks if `value` is likely a DOM element. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`. + * @example + * + * _.isElement(document.body); + * // => true + * + * _.isElement(''); + * // => false + */ + function isElement(value) { + return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value); + } + + /** + * Checks if `value` is an empty object, collection, map, or set. + * + * Objects are considered empty if they have no own enumerable string keyed + * properties. + * + * Array-like values such as `arguments` objects, arrays, buffers, strings, or + * jQuery-like collections are considered empty if they have a `length` of `0`. + * Similarly, maps and sets are considered empty if they have a `size` of `0`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is empty, else `false`. + * @example + * + * _.isEmpty(null); + * // => true + * + * _.isEmpty(true); + * // => true + * + * _.isEmpty(1); + * // => true + * + * _.isEmpty([1, 2, 3]); + * // => false + * + * _.isEmpty({ 'a': 1 }); + * // => false + */ + function isEmpty(value) { + if (value == null) { + return true; + } + if (isArrayLike(value) && + (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || + isBuffer(value) || isTypedArray(value) || isArguments(value))) { + return !value.length; + } + var tag = getTag(value); + if (tag == mapTag || tag == setTag) { + return !value.size; + } + if (isPrototype(value)) { + return !baseKeys(value).length; + } + for (var key in value) { + if (hasOwnProperty.call(value, key)) { + return false; + } + } + return true; + } + + /** + * Performs a deep comparison between two values to determine if they are + * equivalent. + * + * **Note:** This method supports comparing arrays, array buffers, booleans, + * date objects, error objects, maps, numbers, `Object` objects, regexes, + * sets, strings, symbols, and typed arrays. `Object` objects are compared + * by their own, not inherited, enumerable properties. Functions and DOM + * nodes are compared by strict equality, i.e. `===`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.isEqual(object, other); + * // => true + * + * object === other; + * // => false + */ + function isEqual(value, other) { + return baseIsEqual(value, other); + } + + /** + * This method is like `_.isEqual` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with up to + * six arguments: (objValue, othValue [, index|key, object, other, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, othValue) { + * if (isGreeting(objValue) && isGreeting(othValue)) { + * return true; + * } + * } + * + * var array = ['hello', 'goodbye']; + * var other = ['hi', 'goodbye']; + * + * _.isEqualWith(array, other, customizer); + * // => true + */ + function isEqualWith(value, other, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + var result = customizer ? customizer(value, other) : undefined; + return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result; + } + + /** + * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, + * `SyntaxError`, `TypeError`, or `URIError` object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an error object, else `false`. + * @example + * + * _.isError(new Error); + * // => true + * + * _.isError(Error); + * // => false + */ + function isError(value) { + if (!isObjectLike(value)) { + return false; + } + var tag = baseGetTag(value); + return tag == errorTag || tag == domExcTag || + (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value)); + } + + /** + * Checks if `value` is a finite primitive number. + * + * **Note:** This method is based on + * [`Number.isFinite`](https://mdn.io/Number/isFinite). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a finite number, else `false`. + * @example + * + * _.isFinite(3); + * // => true + * + * _.isFinite(Number.MIN_VALUE); + * // => true + * + * _.isFinite(Infinity); + * // => false + * + * _.isFinite('3'); + * // => false + */ + function isFinite(value) { + return typeof value == 'number' && nativeIsFinite(value); + } + + /** + * Checks if `value` is classified as a `Function` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a function, else `false`. + * @example + * + * _.isFunction(_); + * // => true + * + * _.isFunction(/abc/); + * // => false + */ + function isFunction(value) { + if (!isObject(value)) { + return false; + } + // The use of `Object#toString` avoids issues with the `typeof` operator + // in Safari 9 which returns 'object' for typed arrays and other constructors. + var tag = baseGetTag(value); + return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag; + } + + /** + * Checks if `value` is an integer. + * + * **Note:** This method is based on + * [`Number.isInteger`](https://mdn.io/Number/isInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an integer, else `false`. + * @example + * + * _.isInteger(3); + * // => true + * + * _.isInteger(Number.MIN_VALUE); + * // => false + * + * _.isInteger(Infinity); + * // => false + * + * _.isInteger('3'); + * // => false + */ + function isInteger(value) { + return typeof value == 'number' && value == toInteger(value); + } + + /** + * Checks if `value` is a valid array-like length. + * + * **Note:** This method is loosely based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. + * @example + * + * _.isLength(3); + * // => true + * + * _.isLength(Number.MIN_VALUE); + * // => false + * + * _.isLength(Infinity); + * // => false + * + * _.isLength('3'); + * // => false + */ + function isLength(value) { + return typeof value == 'number' && + value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER; + } + + /** + * Checks if `value` is the + * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types) + * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an object, else `false`. + * @example + * + * _.isObject({}); + * // => true + * + * _.isObject([1, 2, 3]); + * // => true + * + * _.isObject(_.noop); + * // => true + * + * _.isObject(null); + * // => false + */ + function isObject(value) { + var type = typeof value; + return value != null && (type == 'object' || type == 'function'); + } + + /** + * Checks if `value` is object-like. A value is object-like if it's not `null` + * and has a `typeof` result of "object". + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is object-like, else `false`. + * @example + * + * _.isObjectLike({}); + * // => true + * + * _.isObjectLike([1, 2, 3]); + * // => true + * + * _.isObjectLike(_.noop); + * // => false + * + * _.isObjectLike(null); + * // => false + */ + function isObjectLike(value) { + return value != null && typeof value == 'object'; + } + + /** + * Checks if `value` is classified as a `Map` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + * @example + * + * _.isMap(new Map); + * // => true + * + * _.isMap(new WeakMap); + * // => false + */ + var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap; + + /** + * Performs a partial deep comparison between `object` and `source` to + * determine if `object` contains equivalent property values. + * + * **Note:** This method is equivalent to `_.matches` when `source` is + * partially applied. + * + * Partial comparisons will match empty array and empty object `source` + * values against any array or object value, respectively. See `_.isEqual` + * for a list of supported value comparisons. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.isMatch(object, { 'b': 2 }); + * // => true + * + * _.isMatch(object, { 'b': 1 }); + * // => false + */ + function isMatch(object, source) { + return object === source || baseIsMatch(object, source, getMatchData(source)); + } + + /** + * This method is like `_.isMatch` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with five + * arguments: (objValue, srcValue, index|key, object, source). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, srcValue) { + * if (isGreeting(objValue) && isGreeting(srcValue)) { + * return true; + * } + * } + * + * var object = { 'greeting': 'hello' }; + * var source = { 'greeting': 'hi' }; + * + * _.isMatchWith(object, source, customizer); + * // => true + */ + function isMatchWith(object, source, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseIsMatch(object, source, getMatchData(source), customizer); + } + + /** + * Checks if `value` is `NaN`. + * + * **Note:** This method is based on + * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as + * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for + * `undefined` and other non-number values. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + * @example + * + * _.isNaN(NaN); + * // => true + * + * _.isNaN(new Number(NaN)); + * // => true + * + * isNaN(undefined); + * // => true + * + * _.isNaN(undefined); + * // => false + */ + function isNaN(value) { + // An `NaN` primitive is the only value that is not equal to itself. + // Perform the `toStringTag` check first to avoid errors with some + // ActiveX objects in IE. + return isNumber(value) && value != +value; + } + + /** + * Checks if `value` is a pristine native function. + * + * **Note:** This method can't reliably detect native functions in the presence + * of the core-js package because core-js circumvents this kind of detection. + * Despite multiple requests, the core-js maintainer has made it clear: any + * attempt to fix the detection will be obstructed. As a result, we're left + * with little choice but to throw an error. Unfortunately, this also affects + * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill), + * which rely on core-js. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + * @example + * + * _.isNative(Array.prototype.push); + * // => true + * + * _.isNative(_); + * // => false + */ + function isNative(value) { + if (isMaskable(value)) { + throw new Error(CORE_ERROR_TEXT); + } + return baseIsNative(value); + } + + /** + * Checks if `value` is `null`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `null`, else `false`. + * @example + * + * _.isNull(null); + * // => true + * + * _.isNull(void 0); + * // => false + */ + function isNull(value) { + return value === null; + } + + /** + * Checks if `value` is `null` or `undefined`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is nullish, else `false`. + * @example + * + * _.isNil(null); + * // => true + * + * _.isNil(void 0); + * // => true + * + * _.isNil(NaN); + * // => false + */ + function isNil(value) { + return value == null; + } + + /** + * Checks if `value` is classified as a `Number` primitive or object. + * + * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are + * classified as numbers, use the `_.isFinite` method. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a number, else `false`. + * @example + * + * _.isNumber(3); + * // => true + * + * _.isNumber(Number.MIN_VALUE); + * // => true + * + * _.isNumber(Infinity); + * // => true + * + * _.isNumber('3'); + * // => false + */ + function isNumber(value) { + return typeof value == 'number' || + (isObjectLike(value) && baseGetTag(value) == numberTag); + } + + /** + * Checks if `value` is a plain object, that is, an object created by the + * `Object` constructor or one with a `[[Prototype]]` of `null`. + * + * @static + * @memberOf _ + * @since 0.8.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * _.isPlainObject(new Foo); + * // => false + * + * _.isPlainObject([1, 2, 3]); + * // => false + * + * _.isPlainObject({ 'x': 0, 'y': 0 }); + * // => true + * + * _.isPlainObject(Object.create(null)); + * // => true + */ + function isPlainObject(value) { + if (!isObjectLike(value) || baseGetTag(value) != objectTag) { + return false; + } + var proto = getPrototype(value); + if (proto === null) { + return true; + } + var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor; + return typeof Ctor == 'function' && Ctor instanceof Ctor && + funcToString.call(Ctor) == objectCtorString; + } + + /** + * Checks if `value` is classified as a `RegExp` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + * @example + * + * _.isRegExp(/abc/); + * // => true + * + * _.isRegExp('/abc/'); + * // => false + */ + var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp; + + /** + * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754 + * double precision number which isn't the result of a rounded unsafe integer. + * + * **Note:** This method is based on + * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`. + * @example + * + * _.isSafeInteger(3); + * // => true + * + * _.isSafeInteger(Number.MIN_VALUE); + * // => false + * + * _.isSafeInteger(Infinity); + * // => false + * + * _.isSafeInteger('3'); + * // => false + */ + function isSafeInteger(value) { + return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER; + } + + /** + * Checks if `value` is classified as a `Set` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + * @example + * + * _.isSet(new Set); + * // => true + * + * _.isSet(new WeakSet); + * // => false + */ + var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet; + + /** + * Checks if `value` is classified as a `String` primitive or object. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a string, else `false`. + * @example + * + * _.isString('abc'); + * // => true + * + * _.isString(1); + * // => false + */ + function isString(value) { + return typeof value == 'string' || + (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag); + } + + /** + * Checks if `value` is classified as a `Symbol` primitive or object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a symbol, else `false`. + * @example + * + * _.isSymbol(Symbol.iterator); + * // => true + * + * _.isSymbol('abc'); + * // => false + */ + function isSymbol(value) { + return typeof value == 'symbol' || + (isObjectLike(value) && baseGetTag(value) == symbolTag); + } + + /** + * Checks if `value` is classified as a typed array. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + * @example + * + * _.isTypedArray(new Uint8Array); + * // => true + * + * _.isTypedArray([]); + * // => false + */ + var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray; + + /** + * Checks if `value` is `undefined`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. + * @example + * + * _.isUndefined(void 0); + * // => true + * + * _.isUndefined(null); + * // => false + */ + function isUndefined(value) { + return value === undefined; + } + + /** + * Checks if `value` is classified as a `WeakMap` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak map, else `false`. + * @example + * + * _.isWeakMap(new WeakMap); + * // => true + * + * _.isWeakMap(new Map); + * // => false + */ + function isWeakMap(value) { + return isObjectLike(value) && getTag(value) == weakMapTag; + } + + /** + * Checks if `value` is classified as a `WeakSet` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak set, else `false`. + * @example + * + * _.isWeakSet(new WeakSet); + * // => true + * + * _.isWeakSet(new Set); + * // => false + */ + function isWeakSet(value) { + return isObjectLike(value) && baseGetTag(value) == weakSetTag; + } + + /** + * Checks if `value` is less than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + * @see _.gt + * @example + * + * _.lt(1, 3); + * // => true + * + * _.lt(3, 3); + * // => false + * + * _.lt(3, 1); + * // => false + */ + var lt = createRelationalOperation(baseLt); + + /** + * Checks if `value` is less than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than or equal to + * `other`, else `false`. + * @see _.gte + * @example + * + * _.lte(1, 3); + * // => true + * + * _.lte(3, 3); + * // => true + * + * _.lte(3, 1); + * // => false + */ + var lte = createRelationalOperation(function(value, other) { + return value <= other; + }); + + /** + * Converts `value` to an array. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to convert. + * @returns {Array} Returns the converted array. + * @example + * + * _.toArray({ 'a': 1, 'b': 2 }); + * // => [1, 2] + * + * _.toArray('abc'); + * // => ['a', 'b', 'c'] + * + * _.toArray(1); + * // => [] + * + * _.toArray(null); + * // => [] + */ + function toArray(value) { + if (!value) { + return []; + } + if (isArrayLike(value)) { + return isString(value) ? stringToArray(value) : copyArray(value); + } + if (symIterator && value[symIterator]) { + return iteratorToArray(value[symIterator]()); + } + var tag = getTag(value), + func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values); + + return func(value); + } + + /** + * Converts `value` to a finite number. + * + * @static + * @memberOf _ + * @since 4.12.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted number. + * @example + * + * _.toFinite(3.2); + * // => 3.2 + * + * _.toFinite(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toFinite(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toFinite('3.2'); + * // => 3.2 + */ + function toFinite(value) { + if (!value) { + return value === 0 ? value : 0; + } + value = toNumber(value); + if (value === INFINITY || value === -INFINITY) { + var sign = (value < 0 ? -1 : 1); + return sign * MAX_INTEGER; + } + return value === value ? value : 0; + } + + /** + * Converts `value` to an integer. + * + * **Note:** This method is loosely based on + * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toInteger(3.2); + * // => 3 + * + * _.toInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toInteger(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toInteger('3.2'); + * // => 3 + */ + function toInteger(value) { + var result = toFinite(value), + remainder = result % 1; + + return result === result ? (remainder ? result - remainder : result) : 0; + } + + /** + * Converts `value` to an integer suitable for use as the length of an + * array-like object. + * + * **Note:** This method is based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toLength(3.2); + * // => 3 + * + * _.toLength(Number.MIN_VALUE); + * // => 0 + * + * _.toLength(Infinity); + * // => 4294967295 + * + * _.toLength('3.2'); + * // => 3 + */ + function toLength(value) { + return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0; + } + + /** + * Converts `value` to a number. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to process. + * @returns {number} Returns the number. + * @example + * + * _.toNumber(3.2); + * // => 3.2 + * + * _.toNumber(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toNumber(Infinity); + * // => Infinity + * + * _.toNumber('3.2'); + * // => 3.2 + */ + function toNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + if (isObject(value)) { + var other = typeof value.valueOf == 'function' ? value.valueOf() : value; + value = isObject(other) ? (other + '') : other; + } + if (typeof value != 'string') { + return value === 0 ? value : +value; + } + value = value.replace(reTrim, ''); + var isBinary = reIsBinary.test(value); + return (isBinary || reIsOctal.test(value)) + ? freeParseInt(value.slice(2), isBinary ? 2 : 8) + : (reIsBadHex.test(value) ? NAN : +value); + } + + /** + * Converts `value` to a plain object flattening inherited enumerable string + * keyed properties of `value` to own properties of the plain object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {Object} Returns the converted plain object. + * @example + * + * function Foo() { + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.assign({ 'a': 1 }, new Foo); + * // => { 'a': 1, 'b': 2 } + * + * _.assign({ 'a': 1 }, _.toPlainObject(new Foo)); + * // => { 'a': 1, 'b': 2, 'c': 3 } + */ + function toPlainObject(value) { + return copyObject(value, keysIn(value)); + } + + /** + * Converts `value` to a safe integer. A safe integer can be compared and + * represented correctly. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toSafeInteger(3.2); + * // => 3 + * + * _.toSafeInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toSafeInteger(Infinity); + * // => 9007199254740991 + * + * _.toSafeInteger('3.2'); + * // => 3 + */ + function toSafeInteger(value) { + return value + ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) + : (value === 0 ? value : 0); + } + + /** + * Converts `value` to a string. An empty string is returned for `null` + * and `undefined` values. The sign of `-0` is preserved. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.toString(null); + * // => '' + * + * _.toString(-0); + * // => '-0' + * + * _.toString([1, 2, 3]); + * // => '1,2,3' + */ + function toString(value) { + return value == null ? '' : baseToString(value); + } + + /*------------------------------------------------------------------------*/ + + /** + * Assigns own enumerable string keyed properties of source objects to the + * destination object. Source objects are applied from left to right. + * Subsequent sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object` and is loosely based on + * [`Object.assign`](https://mdn.io/Object/assign). + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assignIn + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assign({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'c': 3 } + */ + var assign = createAssigner(function(object, source) { + if (isPrototype(source) || isArrayLike(source)) { + copyObject(source, keys(source), object); + return; + } + for (var key in source) { + if (hasOwnProperty.call(source, key)) { + assignValue(object, key, source[key]); + } + } + }); + + /** + * This method is like `_.assign` except that it iterates over own and + * inherited source properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extend + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assign + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assignIn({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 } + */ + var assignIn = createAssigner(function(object, source) { + copyObject(source, keysIn(source), object); + }); + + /** + * This method is like `_.assignIn` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extendWith + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignInWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignInWith = createAssigner(function(object, source, srcIndex, customizer) { + copyObject(source, keysIn(source), object, customizer); + }); + + /** + * This method is like `_.assign` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignInWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignWith = createAssigner(function(object, source, srcIndex, customizer) { + copyObject(source, keys(source), object, customizer); + }); + + /** + * Creates an array of values corresponding to `paths` of `object`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Array} Returns the picked values. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _.at(object, ['a[0].b.c', 'a[1]']); + * // => [3, 4] + */ + var at = flatRest(baseAt); + + /** + * Creates an object that inherits from the `prototype` object. If a + * `properties` object is given, its own enumerable string keyed properties + * are assigned to the created object. + * + * @static + * @memberOf _ + * @since 2.3.0 + * @category Object + * @param {Object} prototype The object to inherit from. + * @param {Object} [properties] The properties to assign to the object. + * @returns {Object} Returns the new object. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * function Circle() { + * Shape.call(this); + * } + * + * Circle.prototype = _.create(Shape.prototype, { + * 'constructor': Circle + * }); + * + * var circle = new Circle; + * circle instanceof Circle; + * // => true + * + * circle instanceof Shape; + * // => true + */ + function create(prototype, properties) { + var result = baseCreate(prototype); + return properties == null ? result : baseAssign(result, properties); + } + + /** + * Assigns own and inherited enumerable string keyed properties of source + * objects to the destination object for all destination properties that + * resolve to `undefined`. Source objects are applied from left to right. + * Once a property is set, additional values of the same property are ignored. + * + * **Note:** This method mutates `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaultsDeep + * @example + * + * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var defaults = baseRest(function(object, sources) { + object = Object(object); + + var index = -1; + var length = sources.length; + var guard = length > 2 ? sources[2] : undefined; + + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + length = 1; + } + + while (++index < length) { + var source = sources[index]; + var props = keysIn(source); + var propsIndex = -1; + var propsLength = props.length; + + while (++propsIndex < propsLength) { + var key = props[propsIndex]; + var value = object[key]; + + if (value === undefined || + (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) { + object[key] = source[key]; + } + } + } + + return object; + }); + + /** + * This method is like `_.defaults` except that it recursively assigns + * default properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaults + * @example + * + * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } }); + * // => { 'a': { 'b': 2, 'c': 3 } } + */ + var defaultsDeep = baseRest(function(args) { + args.push(undefined, customDefaultsMerge); + return apply(mergeWith, undefined, args); + }); + + /** + * This method is like `_.find` except that it returns the key of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findKey(users, function(o) { return o.age < 40; }); + * // => 'barney' (iteration order is not guaranteed) + * + * // The `_.matches` iteratee shorthand. + * _.findKey(users, { 'age': 1, 'active': true }); + * // => 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findKey(users, 'active'); + * // => 'barney' + */ + function findKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwn); + } + + /** + * This method is like `_.findKey` except that it iterates over elements of + * a collection in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findLastKey(users, function(o) { return o.age < 40; }); + * // => returns 'pebbles' assuming `_.findKey` returns 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.findLastKey(users, { 'age': 36, 'active': true }); + * // => 'barney' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findLastKey(users, 'active'); + * // => 'pebbles' + */ + function findLastKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight); + } + + /** + * Iterates over own and inherited enumerable string keyed properties of an + * object and invokes `iteratee` for each property. The iteratee is invoked + * with three arguments: (value, key, object). Iteratee functions may exit + * iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forInRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forIn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed). + */ + function forIn(object, iteratee) { + return object == null + ? object + : baseFor(object, getIteratee(iteratee, 3), keysIn); + } + + /** + * This method is like `_.forIn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forIn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forInRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'. + */ + function forInRight(object, iteratee) { + return object == null + ? object + : baseForRight(object, getIteratee(iteratee, 3), keysIn); + } + + /** + * Iterates over own enumerable string keyed properties of an object and + * invokes `iteratee` for each property. The iteratee is invoked with three + * arguments: (value, key, object). Iteratee functions may exit iteration + * early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwnRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forOwn(object, iteratee) { + return object && baseForOwn(object, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.forOwn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwnRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'. + */ + function forOwnRight(object, iteratee) { + return object && baseForOwnRight(object, getIteratee(iteratee, 3)); + } + + /** + * Creates an array of function property names from own enumerable properties + * of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functionsIn + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functions(new Foo); + * // => ['a', 'b'] + */ + function functions(object) { + return object == null ? [] : baseFunctions(object, keys(object)); + } + + /** + * Creates an array of function property names from own and inherited + * enumerable properties of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functions + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functionsIn(new Foo); + * // => ['a', 'b', 'c'] + */ + function functionsIn(object) { + return object == null ? [] : baseFunctions(object, keysIn(object)); + } + + /** + * Gets the value at `path` of `object`. If the resolved value is + * `undefined`, the `defaultValue` is returned in its place. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.get(object, 'a[0].b.c'); + * // => 3 + * + * _.get(object, ['a', '0', 'b', 'c']); + * // => 3 + * + * _.get(object, 'a.b.c', 'default'); + * // => 'default' + */ + function get(object, path, defaultValue) { + var result = object == null ? undefined : baseGet(object, path); + return result === undefined ? defaultValue : result; + } + + /** + * Checks if `path` is a direct property of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = { 'a': { 'b': 2 } }; + * var other = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.has(object, 'a'); + * // => true + * + * _.has(object, 'a.b'); + * // => true + * + * _.has(object, ['a', 'b']); + * // => true + * + * _.has(other, 'a'); + * // => false + */ + function has(object, path) { + return object != null && hasPath(object, path, baseHas); + } + + /** + * Checks if `path` is a direct or inherited property of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.hasIn(object, 'a'); + * // => true + * + * _.hasIn(object, 'a.b'); + * // => true + * + * _.hasIn(object, ['a', 'b']); + * // => true + * + * _.hasIn(object, 'b'); + * // => false + */ + function hasIn(object, path) { + return object != null && hasPath(object, path, baseHasIn); + } + + /** + * Creates an object composed of the inverted keys and values of `object`. + * If `object` contains duplicate values, subsequent values overwrite + * property assignments of previous values. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Object + * @param {Object} object The object to invert. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invert(object); + * // => { '1': 'c', '2': 'b' } + */ + var invert = createInverter(function(result, value, key) { + if (value != null && + typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } + + result[value] = key; + }, constant(identity)); + + /** + * This method is like `_.invert` except that the inverted object is generated + * from the results of running each element of `object` thru `iteratee`. The + * corresponding inverted value of each inverted key is an array of keys + * responsible for generating the inverted value. The iteratee is invoked + * with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Object + * @param {Object} object The object to invert. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invertBy(object); + * // => { '1': ['a', 'c'], '2': ['b'] } + * + * _.invertBy(object, function(value) { + * return 'group' + value; + * }); + * // => { 'group1': ['a', 'c'], 'group2': ['b'] } + */ + var invertBy = createInverter(function(result, value, key) { + if (value != null && + typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } + + if (hasOwnProperty.call(result, value)) { + result[value].push(key); + } else { + result[value] = [key]; + } + }, getIteratee); + + /** + * Invokes the method at `path` of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {...*} [args] The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + * @example + * + * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] }; + * + * _.invoke(object, 'a[0].b.c.slice', 1, 3); + * // => [2, 3] + */ + var invoke = baseRest(baseInvoke); + + /** + * Creates an array of the own enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. See the + * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * for more details. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keys(new Foo); + * // => ['a', 'b'] (iteration order is not guaranteed) + * + * _.keys('hi'); + * // => ['0', '1'] + */ + function keys(object) { + return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object); + } + + /** + * Creates an array of the own and inherited enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keysIn(new Foo); + * // => ['a', 'b', 'c'] (iteration order is not guaranteed) + */ + function keysIn(object) { + return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object); + } + + /** + * The opposite of `_.mapValues`; this method creates an object with the + * same values as `object` and keys generated by running each own enumerable + * string keyed property of `object` thru `iteratee`. The iteratee is invoked + * with three arguments: (value, key, object). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapValues + * @example + * + * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) { + * return key + value; + * }); + * // => { 'a1': 1, 'b2': 2 } + */ + function mapKeys(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); + + baseForOwn(object, function(value, key, object) { + baseAssignValue(result, iteratee(value, key, object), value); + }); + return result; + } + + /** + * Creates an object with the same keys as `object` and values generated + * by running each own enumerable string keyed property of `object` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, key, object). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapKeys + * @example + * + * var users = { + * 'fred': { 'user': 'fred', 'age': 40 }, + * 'pebbles': { 'user': 'pebbles', 'age': 1 } + * }; + * + * _.mapValues(users, function(o) { return o.age; }); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + * + * // The `_.property` iteratee shorthand. + * _.mapValues(users, 'age'); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + */ + function mapValues(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); + + baseForOwn(object, function(value, key, object) { + baseAssignValue(result, key, iteratee(value, key, object)); + }); + return result; + } + + /** + * This method is like `_.assign` except that it recursively merges own and + * inherited enumerable string keyed properties of source objects into the + * destination object. Source properties that resolve to `undefined` are + * skipped if a destination value exists. Array and plain object properties + * are merged recursively. Other objects and value types are overridden by + * assignment. Source objects are applied from left to right. Subsequent + * sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @example + * + * var object = { + * 'a': [{ 'b': 2 }, { 'd': 4 }] + * }; + * + * var other = { + * 'a': [{ 'c': 3 }, { 'e': 5 }] + * }; + * + * _.merge(object, other); + * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] } + */ + var merge = createAssigner(function(object, source, srcIndex) { + baseMerge(object, source, srcIndex); + }); + + /** + * This method is like `_.merge` except that it accepts `customizer` which + * is invoked to produce the merged values of the destination and source + * properties. If `customizer` returns `undefined`, merging is handled by the + * method instead. The `customizer` is invoked with six arguments: + * (objValue, srcValue, key, object, source, stack). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} customizer The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * function customizer(objValue, srcValue) { + * if (_.isArray(objValue)) { + * return objValue.concat(srcValue); + * } + * } + * + * var object = { 'a': [1], 'b': [2] }; + * var other = { 'a': [3], 'b': [4] }; + * + * _.mergeWith(object, other, customizer); + * // => { 'a': [1, 3], 'b': [2, 4] } + */ + var mergeWith = createAssigner(function(object, source, srcIndex, customizer) { + baseMerge(object, source, srcIndex, customizer); + }); + + /** + * The opposite of `_.pick`; this method creates an object composed of the + * own and inherited enumerable property paths of `object` that are not omitted. + * + * **Note:** This method is considerably slower than `_.pick`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to omit. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omit(object, ['a', 'c']); + * // => { 'b': '2' } + */ + var omit = flatRest(function(object, paths) { + var result = {}; + if (object == null) { + return result; + } + var isDeep = false; + paths = arrayMap(paths, function(path) { + path = castPath(path, object); + isDeep || (isDeep = path.length > 1); + return path; + }); + copyObject(object, getAllKeysIn(object), result); + if (isDeep) { + result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone); + } + var length = paths.length; + while (length--) { + baseUnset(result, paths[length]); + } + return result; + }); + + /** + * The opposite of `_.pickBy`; this method creates an object composed of + * the own and inherited enumerable string keyed properties of `object` that + * `predicate` doesn't return truthy for. The predicate is invoked with two + * arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omitBy(object, _.isNumber); + * // => { 'b': '2' } + */ + function omitBy(object, predicate) { + return pickBy(object, negate(getIteratee(predicate))); + } + + /** + * Creates an object composed of the picked `object` properties. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pick(object, ['a', 'c']); + * // => { 'a': 1, 'c': 3 } + */ + var pick = flatRest(function(object, paths) { + return object == null ? {} : basePick(object, paths); + }); + + /** + * Creates an object composed of the `object` properties `predicate` returns + * truthy for. The predicate is invoked with two arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pickBy(object, _.isNumber); + * // => { 'a': 1, 'c': 3 } + */ + function pickBy(object, predicate) { + if (object == null) { + return {}; + } + var props = arrayMap(getAllKeysIn(object), function(prop) { + return [prop]; + }); + predicate = getIteratee(predicate); + return basePickBy(object, props, function(value, path) { + return predicate(value, path[0]); + }); + } + + /** + * This method is like `_.get` except that if the resolved value is a + * function it's invoked with the `this` binding of its parent object and + * its result is returned. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to resolve. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] }; + * + * _.result(object, 'a[0].b.c1'); + * // => 3 + * + * _.result(object, 'a[0].b.c2'); + * // => 4 + * + * _.result(object, 'a[0].b.c3', 'default'); + * // => 'default' + * + * _.result(object, 'a[0].b.c3', _.constant('default')); + * // => 'default' + */ + function result(object, path, defaultValue) { + path = castPath(path, object); + + var index = -1, + length = path.length; + + // Ensure the loop is entered when path is empty. + if (!length) { + length = 1; + object = undefined; + } + while (++index < length) { + var value = object == null ? undefined : object[toKey(path[index])]; + if (value === undefined) { + index = length; + value = defaultValue; + } + object = isFunction(value) ? value.call(object) : value; + } + return object; + } + + /** + * Sets the value at `path` of `object`. If a portion of `path` doesn't exist, + * it's created. Arrays are created for missing index properties while objects + * are created for all other missing properties. Use `_.setWith` to customize + * `path` creation. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.set(object, 'a[0].b.c', 4); + * console.log(object.a[0].b.c); + * // => 4 + * + * _.set(object, ['x', '0', 'y', 'z'], 5); + * console.log(object.x[0].y.z); + * // => 5 + */ + function set(object, path, value) { + return object == null ? object : baseSet(object, path, value); + } + + /** + * This method is like `_.set` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.setWith(object, '[0][1]', 'a', Object); + * // => { '0': { '1': 'a' } } + */ + function setWith(object, path, value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseSet(object, path, value, customizer); + } + + /** + * Creates an array of own enumerable string keyed-value pairs for `object` + * which can be consumed by `_.fromPairs`. If `object` is a map or set, its + * entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entries + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairs(new Foo); + * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed) + */ + var toPairs = createToPairs(keys); + + /** + * Creates an array of own and inherited enumerable string keyed-value pairs + * for `object` which can be consumed by `_.fromPairs`. If `object` is a map + * or set, its entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entriesIn + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairsIn(new Foo); + * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed) + */ + var toPairsIn = createToPairs(keysIn); + + /** + * An alternative to `_.reduce`; this method transforms `object` to a new + * `accumulator` object which is the result of running each of its own + * enumerable string keyed properties thru `iteratee`, with each invocation + * potentially mutating the `accumulator` object. If `accumulator` is not + * provided, a new object with the same `[[Prototype]]` will be used. The + * iteratee is invoked with four arguments: (accumulator, value, key, object). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The custom accumulator value. + * @returns {*} Returns the accumulated value. + * @example + * + * _.transform([2, 3, 4], function(result, n) { + * result.push(n *= n); + * return n % 2 == 0; + * }, []); + * // => [4, 9] + * + * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } + */ + function transform(object, iteratee, accumulator) { + var isArr = isArray(object), + isArrLike = isArr || isBuffer(object) || isTypedArray(object); + + iteratee = getIteratee(iteratee, 4); + if (accumulator == null) { + var Ctor = object && object.constructor; + if (isArrLike) { + accumulator = isArr ? new Ctor : []; + } + else if (isObject(object)) { + accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {}; + } + else { + accumulator = {}; + } + } + (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) { + return iteratee(accumulator, value, index, object); + }); + return accumulator; + } + + /** + * Removes the property at `path` of `object`. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 7 } }] }; + * _.unset(object, 'a[0].b.c'); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + * + * _.unset(object, ['a', '0', 'b', 'c']); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + */ + function unset(object, path) { + return object == null ? true : baseUnset(object, path); + } + + /** + * This method is like `_.set` except that accepts `updater` to produce the + * value to set. Use `_.updateWith` to customize `path` creation. The `updater` + * is invoked with one argument: (value). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.update(object, 'a[0].b.c', function(n) { return n * n; }); + * console.log(object.a[0].b.c); + * // => 9 + * + * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; }); + * console.log(object.x[0].y.z); + * // => 0 + */ + function update(object, path, updater) { + return object == null ? object : baseUpdate(object, path, castFunction(updater)); + } + + /** + * This method is like `_.update` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.updateWith(object, '[0][1]', _.constant('a'), Object); + * // => { '0': { '1': 'a' } } + */ + function updateWith(object, path, updater, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer); + } + + /** + * Creates an array of the own enumerable string keyed property values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.values(new Foo); + * // => [1, 2] (iteration order is not guaranteed) + * + * _.values('hi'); + * // => ['h', 'i'] + */ + function values(object) { + return object == null ? [] : baseValues(object, keys(object)); + } + + /** + * Creates an array of the own and inherited enumerable string keyed property + * values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.valuesIn(new Foo); + * // => [1, 2, 3] (iteration order is not guaranteed) + */ + function valuesIn(object) { + return object == null ? [] : baseValues(object, keysIn(object)); + } + + /*------------------------------------------------------------------------*/ + + /** + * Clamps `number` within the inclusive `lower` and `upper` bounds. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Number + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + * @example + * + * _.clamp(-10, -5, 5); + * // => -5 + * + * _.clamp(10, -5, 5); + * // => 5 + */ + function clamp(number, lower, upper) { + if (upper === undefined) { + upper = lower; + lower = undefined; + } + if (upper !== undefined) { + upper = toNumber(upper); + upper = upper === upper ? upper : 0; + } + if (lower !== undefined) { + lower = toNumber(lower); + lower = lower === lower ? lower : 0; + } + return baseClamp(toNumber(number), lower, upper); + } + + /** + * Checks if `n` is between `start` and up to, but not including, `end`. If + * `end` is not specified, it's set to `start` with `start` then set to `0`. + * If `start` is greater than `end` the params are swapped to support + * negative ranges. + * + * @static + * @memberOf _ + * @since 3.3.0 + * @category Number + * @param {number} number The number to check. + * @param {number} [start=0] The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + * @see _.range, _.rangeRight + * @example + * + * _.inRange(3, 2, 4); + * // => true + * + * _.inRange(4, 8); + * // => true + * + * _.inRange(4, 2); + * // => false + * + * _.inRange(2, 2); + * // => false + * + * _.inRange(1.2, 2); + * // => true + * + * _.inRange(5.2, 4); + * // => false + * + * _.inRange(-3, -2, -6); + * // => true + */ + function inRange(number, start, end) { + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + number = toNumber(number); + return baseInRange(number, start, end); + } + + /** + * Produces a random number between the inclusive `lower` and `upper` bounds. + * If only one argument is provided a number between `0` and the given number + * is returned. If `floating` is `true`, or either `lower` or `upper` are + * floats, a floating-point number is returned instead of an integer. + * + * **Note:** JavaScript follows the IEEE-754 standard for resolving + * floating-point values which can produce unexpected results. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Number + * @param {number} [lower=0] The lower bound. + * @param {number} [upper=1] The upper bound. + * @param {boolean} [floating] Specify returning a floating-point number. + * @returns {number} Returns the random number. + * @example + * + * _.random(0, 5); + * // => an integer between 0 and 5 + * + * _.random(5); + * // => also an integer between 0 and 5 + * + * _.random(5, true); + * // => a floating-point number between 0 and 5 + * + * _.random(1.2, 5.2); + * // => a floating-point number between 1.2 and 5.2 + */ + function random(lower, upper, floating) { + if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) { + upper = floating = undefined; + } + if (floating === undefined) { + if (typeof upper == 'boolean') { + floating = upper; + upper = undefined; + } + else if (typeof lower == 'boolean') { + floating = lower; + lower = undefined; + } + } + if (lower === undefined && upper === undefined) { + lower = 0; + upper = 1; + } + else { + lower = toFinite(lower); + if (upper === undefined) { + upper = lower; + lower = 0; + } else { + upper = toFinite(upper); + } + } + if (lower > upper) { + var temp = lower; + lower = upper; + upper = temp; + } + if (floating || lower % 1 || upper % 1) { + var rand = nativeRandom(); + return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper); + } + return baseRandom(lower, upper); + } + + /*------------------------------------------------------------------------*/ + + /** + * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the camel cased string. + * @example + * + * _.camelCase('Foo Bar'); + * // => 'fooBar' + * + * _.camelCase('--foo-bar--'); + * // => 'fooBar' + * + * _.camelCase('__FOO_BAR__'); + * // => 'fooBar' + */ + var camelCase = createCompounder(function(result, word, index) { + word = word.toLowerCase(); + return result + (index ? capitalize(word) : word); + }); + + /** + * Converts the first character of `string` to upper case and the remaining + * to lower case. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to capitalize. + * @returns {string} Returns the capitalized string. + * @example + * + * _.capitalize('FRED'); + * // => 'Fred' + */ + function capitalize(string) { + return upperFirst(toString(string).toLowerCase()); + } + + /** + * Deburrs `string` by converting + * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table) + * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A) + * letters to basic Latin letters and removing + * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to deburr. + * @returns {string} Returns the deburred string. + * @example + * + * _.deburr('déjà vu'); + * // => 'deja vu' + */ + function deburr(string) { + string = toString(string); + return string && string.replace(reLatin, deburrLetter).replace(reComboMark, ''); + } + + /** + * Checks if `string` ends with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=string.length] The position to search up to. + * @returns {boolean} Returns `true` if `string` ends with `target`, + * else `false`. + * @example + * + * _.endsWith('abc', 'c'); + * // => true + * + * _.endsWith('abc', 'b'); + * // => false + * + * _.endsWith('abc', 'b', 2); + * // => true + */ + function endsWith(string, target, position) { + string = toString(string); + target = baseToString(target); + + var length = string.length; + position = position === undefined + ? length + : baseClamp(toInteger(position), 0, length); + + var end = position; + position -= target.length; + return position >= 0 && string.slice(position, end) == target; + } + + /** + * Converts the characters "&", "<", ">", '"', and "'" in `string` to their + * corresponding HTML entities. + * + * **Note:** No other characters are escaped. To escape additional + * characters use a third-party library like [_he_](https://mths.be/he). + * + * Though the ">" character is escaped for symmetry, characters like + * ">" and "/" don't need escaping in HTML and have no special meaning + * unless they're part of a tag or unquoted attribute value. See + * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) + * (under "semi-related fun fact") for more details. + * + * When working with HTML you should always + * [quote attribute values](http://wonko.com/post/html-escaping) to reduce + * XSS vectors. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escape('fred, barney, & pebbles'); + * // => 'fred, barney, & pebbles' + */ + function escape(string) { + string = toString(string); + return (string && reHasUnescapedHtml.test(string)) + ? string.replace(reUnescapedHtml, escapeHtmlChar) + : string; + } + + /** + * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+", + * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escapeRegExp('[lodash](https://lodash.com/)'); + * // => '\[lodash\]\(https://lodash\.com/\)' + */ + function escapeRegExp(string) { + string = toString(string); + return (string && reHasRegExpChar.test(string)) + ? string.replace(reRegExpChar, '\\$&') + : string; + } + + /** + * Converts `string` to + * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the kebab cased string. + * @example + * + * _.kebabCase('Foo Bar'); + * // => 'foo-bar' + * + * _.kebabCase('fooBar'); + * // => 'foo-bar' + * + * _.kebabCase('__FOO_BAR__'); + * // => 'foo-bar' + */ + var kebabCase = createCompounder(function(result, word, index) { + return result + (index ? '-' : '') + word.toLowerCase(); + }); + + /** + * Converts `string`, as space separated words, to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the lower cased string. + * @example + * + * _.lowerCase('--Foo-Bar--'); + * // => 'foo bar' + * + * _.lowerCase('fooBar'); + * // => 'foo bar' + * + * _.lowerCase('__FOO_BAR__'); + * // => 'foo bar' + */ + var lowerCase = createCompounder(function(result, word, index) { + return result + (index ? ' ' : '') + word.toLowerCase(); + }); + + /** + * Converts the first character of `string` to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.lowerFirst('Fred'); + * // => 'fred' + * + * _.lowerFirst('FRED'); + * // => 'fRED' + */ + var lowerFirst = createCaseFirst('toLowerCase'); + + /** + * Pads `string` on the left and right sides if it's shorter than `length`. + * Padding characters are truncated if they can't be evenly divided by `length`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.pad('abc', 8); + * // => ' abc ' + * + * _.pad('abc', 8, '_-'); + * // => '_-abc_-_' + * + * _.pad('abc', 3); + * // => 'abc' + */ + function pad(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + if (!length || strLength >= length) { + return string; + } + var mid = (length - strLength) / 2; + return ( + createPadding(nativeFloor(mid), chars) + + string + + createPadding(nativeCeil(mid), chars) + ); + } + + /** + * Pads `string` on the right side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padEnd('abc', 6); + * // => 'abc ' + * + * _.padEnd('abc', 6, '_-'); + * // => 'abc_-_' + * + * _.padEnd('abc', 3); + * // => 'abc' + */ + function padEnd(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + return (length && strLength < length) + ? (string + createPadding(length - strLength, chars)) + : string; + } + + /** + * Pads `string` on the left side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padStart('abc', 6); + * // => ' abc' + * + * _.padStart('abc', 6, '_-'); + * // => '_-_abc' + * + * _.padStart('abc', 3); + * // => 'abc' + */ + function padStart(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + return (length && strLength < length) + ? (createPadding(length - strLength, chars) + string) + : string; + } + + /** + * Converts `string` to an integer of the specified radix. If `radix` is + * `undefined` or `0`, a `radix` of `10` is used unless `value` is a + * hexadecimal, in which case a `radix` of `16` is used. + * + * **Note:** This method aligns with the + * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category String + * @param {string} string The string to convert. + * @param {number} [radix=10] The radix to interpret `value` by. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {number} Returns the converted integer. + * @example + * + * _.parseInt('08'); + * // => 8 + * + * _.map(['6', '08', '10'], _.parseInt); + * // => [6, 8, 10] + */ + function parseInt(string, radix, guard) { + if (guard || radix == null) { + radix = 0; + } else if (radix) { + radix = +radix; + } + return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0); + } + + /** + * Repeats the given string `n` times. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to repeat. + * @param {number} [n=1] The number of times to repeat the string. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the repeated string. + * @example + * + * _.repeat('*', 3); + * // => '***' + * + * _.repeat('abc', 2); + * // => 'abcabc' + * + * _.repeat('abc', 0); + * // => '' + */ + function repeat(string, n, guard) { + if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) { + n = 1; + } else { + n = toInteger(n); + } + return baseRepeat(toString(string), n); + } + + /** + * Replaces matches for `pattern` in `string` with `replacement`. + * + * **Note:** This method is based on + * [`String#replace`](https://mdn.io/String/replace). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to modify. + * @param {RegExp|string} pattern The pattern to replace. + * @param {Function|string} replacement The match replacement. + * @returns {string} Returns the modified string. + * @example + * + * _.replace('Hi Fred', 'Fred', 'Barney'); + * // => 'Hi Barney' + */ + function replace() { + var args = arguments, + string = toString(args[0]); + + return args.length < 3 ? string : string.replace(args[1], args[2]); + } + + /** + * Converts `string` to + * [snake case](https://en.wikipedia.org/wiki/Snake_case). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the snake cased string. + * @example + * + * _.snakeCase('Foo Bar'); + * // => 'foo_bar' + * + * _.snakeCase('fooBar'); + * // => 'foo_bar' + * + * _.snakeCase('--FOO-BAR--'); + * // => 'foo_bar' + */ + var snakeCase = createCompounder(function(result, word, index) { + return result + (index ? '_' : '') + word.toLowerCase(); + }); + + /** + * Splits `string` by `separator`. + * + * **Note:** This method is based on + * [`String#split`](https://mdn.io/String/split). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to split. + * @param {RegExp|string} separator The separator pattern to split by. + * @param {number} [limit] The length to truncate results to. + * @returns {Array} Returns the string segments. + * @example + * + * _.split('a-b-c', '-', 2); + * // => ['a', 'b'] + */ + function split(string, separator, limit) { + if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) { + separator = limit = undefined; + } + limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0; + if (!limit) { + return []; + } + string = toString(string); + if (string && ( + typeof separator == 'string' || + (separator != null && !isRegExp(separator)) + )) { + separator = baseToString(separator); + if (!separator && hasUnicode(string)) { + return castSlice(stringToArray(string), 0, limit); + } + } + return string.split(separator, limit); + } + + /** + * Converts `string` to + * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage). + * + * @static + * @memberOf _ + * @since 3.1.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the start cased string. + * @example + * + * _.startCase('--foo-bar--'); + * // => 'Foo Bar' + * + * _.startCase('fooBar'); + * // => 'Foo Bar' + * + * _.startCase('__FOO_BAR__'); + * // => 'FOO BAR' + */ + var startCase = createCompounder(function(result, word, index) { + return result + (index ? ' ' : '') + upperFirst(word); + }); + + /** + * Checks if `string` starts with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=0] The position to search from. + * @returns {boolean} Returns `true` if `string` starts with `target`, + * else `false`. + * @example + * + * _.startsWith('abc', 'a'); + * // => true + * + * _.startsWith('abc', 'b'); + * // => false + * + * _.startsWith('abc', 'b', 1); + * // => true + */ + function startsWith(string, target, position) { + string = toString(string); + position = position == null + ? 0 + : baseClamp(toInteger(position), 0, string.length); + + target = baseToString(target); + return string.slice(position, position + target.length) == target; + } + + /** + * Creates a compiled template function that can interpolate data properties + * in "interpolate" delimiters, HTML-escape interpolated data properties in + * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data + * properties may be accessed as free variables in the template. If a setting + * object is given, it takes precedence over `_.templateSettings` values. + * + * **Note:** In the development build `_.template` utilizes + * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) + * for easier debugging. + * + * For more information on precompiling templates see + * [lodash's custom builds documentation](https://lodash.com/custom-builds). + * + * For more information on Chrome extension sandboxes see + * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The template string. + * @param {Object} [options={}] The options object. + * @param {RegExp} [options.escape=_.templateSettings.escape] + * The HTML "escape" delimiter. + * @param {RegExp} [options.evaluate=_.templateSettings.evaluate] + * The "evaluate" delimiter. + * @param {Object} [options.imports=_.templateSettings.imports] + * An object to import into the template as free variables. + * @param {RegExp} [options.interpolate=_.templateSettings.interpolate] + * The "interpolate" delimiter. + * @param {string} [options.sourceURL='lodash.templateSources[n]'] + * The sourceURL of the compiled template. + * @param {string} [options.variable='obj'] + * The data object variable name. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the compiled template function. + * @example + * + * // Use the "interpolate" delimiter to create a compiled template. + * var compiled = _.template('hello <%= user %>!'); + * compiled({ 'user': 'fred' }); + * // => 'hello fred!' + * + * // Use the HTML "escape" delimiter to escape data property values. + * var compiled = _.template('<%- value %>'); + * compiled({ 'value': '