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7de41f10 AM |
1 | 'use strict' |
2 | ||
7f0547d4 | 3 | const debug_ = require('debug'); |
4 | ||
5 | const debug = debug_('purs-loader'); | |
6 | ||
7 | const debugVerbose = debug_('purs-loader:verbose'); | |
1c12889c | 8 | |
7de41f10 | 9 | const loaderUtils = require('loader-utils') |
1c12889c | 10 | |
7de41f10 | 11 | const Promise = require('bluebird') |
1c12889c | 12 | |
7de41f10 | 13 | const path = require('path') |
1c12889c | 14 | |
15 | const PsModuleMap = require('./purs-module-map'); | |
16 | ||
17 | const compile = require('./compile'); | |
18 | ||
19 | const bundle = require('./bundle'); | |
20 | ||
21 | const ide = require('./ide'); | |
22 | ||
8e21ab0a | 23 | const toJavaScript = require('./to-javascript'); |
1c12889c | 24 | |
466c0068 | 25 | const sourceMaps = require('./source-maps'); |
26 | ||
86e2b3d4 | 27 | const spawn = require('cross-spawn').sync |
1c12889c | 28 | |
86e2b3d4 | 29 | const eol = require('os').EOL |
7de41f10 | 30 | |
0f9fe1ed | 31 | var CACHE_VAR = { |
32 | rebuild: false, | |
33 | deferred: [], | |
34 | bundleModules: [], | |
35 | ideServer: null, | |
36 | psModuleMap: null, | |
37 | warnings: [], | |
38 | errors: [], | |
39 | compilationStarted: false, | |
40 | compilationFinished: false, | |
41 | installed: false, | |
1029c032 DH |
42 | srcOption: [], |
43 | spagoOutputPath: null | |
0f9fe1ed | 44 | }; |
45 | ||
bef7f4e2 DH |
46 | // include src files provided by psc-package or Spago |
47 | function requestDependencySources(packagerCommand, srcPath, loaderOptions) { | |
48 | const packagerArgs = ['sources']; | |
49 | ||
50 | const loaderSrc = loaderOptions.src || [ | |
51 | srcPath | |
52 | ]; | |
53 | ||
54 | debug('%s %o', packagerCommand, packagerArgs); | |
55 | ||
56 | const cmd = spawn(packagerCommand, packagerArgs); | |
57 | ||
58 | if (cmd.error) { | |
59 | throw new Error(cmd.error); | |
60 | } | |
61 | else if (cmd.status !== 0) { | |
62 | const error = cmd.stdout.toString(); | |
63 | ||
64 | throw new Error(error); | |
65 | } | |
66 | else { | |
67 | const result = cmd.stdout.toString().split(eol).filter(v => v != '').concat(loaderSrc); | |
68 | ||
69 | debug('%s result: %o', packagerCommand, result); | |
70 | ||
71 | CACHE_VAR.srcOption = result; | |
72 | ||
73 | return result; | |
74 | } | |
75 | } | |
76 | ||
1029c032 DH |
77 | // 'spago output path' will return the output folder in a monorepo |
78 | function getSpagoSources() { | |
79 | const cachedVal = CACHE_VAR.spagoOutputPath; | |
80 | if (cachedVal) { | |
81 | return cachedVal | |
82 | } | |
83 | const command = "spago" | |
84 | const args = ["path", "output"] | |
85 | ||
86 | const cmd = spawn(command, args); | |
87 | ||
88 | if (cmd.error) { | |
89 | throw new Error(cmd.error); | |
90 | } | |
91 | else if (cmd.status !== 0) { | |
92 | const error = cmd.stdout.toString(); | |
93 | ||
94 | throw new Error(error); | |
95 | } | |
96 | else { | |
97 | const result = cmd.stdout.toString().split(eol)[0] | |
98 | ||
99 | debug('"spago path output" result: %o', result); | |
100 | ||
101 | CACHE_VAR.spagoOutputPath = result; | |
102 | ||
103 | return result; | |
104 | } | |
105 | } | |
106 | ||
7de41f10 | 107 | module.exports = function purescriptLoader(source, map) { |
7f0547d4 | 108 | this.cacheable && this.cacheable(); |
109 | ||
0f9fe1ed | 110 | const webpackContext = (this.options && this.options.context) || this.rootContext; |
e1719658 | 111 | |
112 | const callback = this.async(); | |
113 | ||
7f0547d4 | 114 | const loaderOptions = loaderUtils.getOptions(this) || {}; |
7de41f10 | 115 | |
bef7f4e2 | 116 | const srcOption = ((pscPackage, spago) => { |
e1719658 | 117 | const srcPath = path.join('src', '**', '*.purs'); |
118 | ||
119 | const bowerPath = path.join('bower_components', 'purescript-*', 'src', '**', '*.purs'); | |
120 | ||
0f9fe1ed | 121 | if (CACHE_VAR.srcOption.length > 0) { |
122 | return CACHE_VAR.srcOption; | |
e1719658 | 123 | } |
124 | else if (pscPackage) { | |
bef7f4e2 | 125 | return requestDependencySources('psc-package', srcPath, loaderOptions) |
86e2b3d4 | 126 | } |
bef7f4e2 DH |
127 | else if (spago) { |
128 | return requestDependencySources('spago', srcPath, loaderOptions) | |
129 | } | |
86e2b3d4 | 130 | else { |
e1719658 | 131 | const result = loaderOptions.src || [ |
132 | bowerPath, | |
133 | srcPath | |
7f0547d4 | 134 | ]; |
e1719658 | 135 | |
0f9fe1ed | 136 | CACHE_VAR.srcOption = result; |
e1719658 | 137 | |
138 | return result; | |
86e2b3d4 | 139 | } |
bef7f4e2 | 140 | })(loaderOptions.pscPackage, loaderOptions.spago); |
1029c032 DH |
141 | |
142 | const outputPath = loaderOptions.spago ? getSpagoSources() : 'output' | |
86e2b3d4 | 143 | |
7f0547d4 | 144 | const options = Object.assign({ |
0f9fe1ed | 145 | context: webpackContext, |
1c12889c | 146 | psc: null, |
7de41f10 | 147 | pscArgs: {}, |
1c12889c | 148 | pscBundle: null, |
7de41f10 | 149 | pscBundleArgs: {}, |
71a96808 | 150 | pscIdeClient: null, |
151 | pscIdeClientArgs: {}, | |
152 | pscIdeServer: null, | |
153 | pscIdeServerArgs: {}, | |
cd124999 | 154 | pscIdeRebuildArgs: {}, |
5163b5a2 | 155 | pscIde: false, |
7f0547d4 | 156 | pscIdeColors: loaderOptions.psc === 'psa', |
86e2b3d4 | 157 | pscPackage: false, |
bef7f4e2 | 158 | spago: false, |
7de41f10 AM |
159 | bundleOutput: 'output/bundle.js', |
160 | bundleNamespace: 'PS', | |
161 | bundle: false, | |
162 | warnings: true, | |
df8798fa | 163 | watch: false, |
1029c032 | 164 | output: outputPath, |
7f0547d4 | 165 | src: [] |
166 | }, loaderOptions, { | |
167 | src: srcOption | |
168 | }); | |
7de41f10 | 169 | |
0f9fe1ed | 170 | if (!CACHE_VAR.installed) { |
7f0547d4 | 171 | debugVerbose('installing purs-loader with options: %O', options); |
86e2b3d4 | 172 | |
0f9fe1ed | 173 | CACHE_VAR.installed = true; |
7de41f10 | 174 | |
d841685e | 175 | const invalidCb = () => { |
0f9fe1ed | 176 | debugVerbose('invalidating loader CACHE_VAR'); |
531c751f | 177 | |
0f9fe1ed | 178 | CACHE_VAR = { |
5163b5a2 | 179 | rebuild: options.pscIde, |
7de41f10 | 180 | deferred: [], |
531c751f | 181 | bundleModules: [], |
0f9fe1ed | 182 | ideServer: CACHE_VAR.ideServer, |
183 | psModuleMap: CACHE_VAR.psModuleMap, | |
b683b0b1 | 184 | warnings: [], |
e1719658 | 185 | errors: [], |
78e2b0d9 | 186 | compilationStarted: false, |
187 | compilationFinished: false, | |
0f9fe1ed | 188 | installed: CACHE_VAR.installed, |
6ccb09a5 | 189 | srcOption: [] |
7f0547d4 | 190 | }; |
d841685e | 191 | } |
b683b0b1 | 192 | |
d841685e RS |
193 | // invalidate loader CACHE_VAR when bundle is marked as invalid (in watch mode) |
194 | if(this._compiler.hooks){ | |
195 | this._compiler.hooks.invalid.tap('purs-loader', invalidCb); | |
196 | } else { | |
197 | this._compiler.plugin('invalid', invalidCb); | |
198 | } | |
199 | ||
200 | const afterCompileCb = (compilation, callback) => { | |
0f9fe1ed | 201 | CACHE_VAR.warnings.forEach(warning => { |
b683b0b1 | 202 | compilation.warnings.push(warning); |
203 | }); | |
204 | ||
0f9fe1ed | 205 | CACHE_VAR.errors.forEach(error => { |
b683b0b1 | 206 | compilation.errors.push(error); |
207 | }); | |
208 | ||
209 | callback() | |
d841685e RS |
210 | } |
211 | ||
212 | // add psc warnings to webpack compilation warnings | |
213 | if(this._compiler.hooks) { | |
214 | this._compiler.hooks.afterCompile.tapAsync('purs-loader', afterCompileCb); | |
215 | } else { | |
216 | this._compiler.plugin('after-compile', afterCompileCb); | |
217 | } | |
7de41f10 AM |
218 | } |
219 | ||
7f0547d4 | 220 | const psModuleName = PsModuleMap.matchModule(source); |
221 | ||
7de41f10 AM |
222 | const psModule = { |
223 | name: psModuleName, | |
466c0068 | 224 | source: source, |
225 | load: ({js, map}) => callback(null, js, map), | |
7de41f10 AM |
226 | reject: error => callback(error), |
227 | srcPath: this.resourcePath, | |
466c0068 | 228 | remainingRequest: loaderUtils.getRemainingRequest(this), |
7de41f10 AM |
229 | srcDir: path.dirname(this.resourcePath), |
230 | jsPath: path.resolve(path.join(options.output, psModuleName, 'index.js')), | |
231 | options: options, | |
0f9fe1ed | 232 | cache: CACHE_VAR, |
b683b0b1 | 233 | emitWarning: warning => { |
234 | if (options.warnings && warning.length) { | |
0f9fe1ed | 235 | CACHE_VAR.warnings.push(warning); |
b683b0b1 | 236 | } |
237 | }, | |
238 | emitError: error => { | |
239 | if (error.length) { | |
0f9fe1ed | 240 | CACHE_VAR.errors.push(error); |
b683b0b1 | 241 | } |
242 | } | |
7de41f10 AM |
243 | } |
244 | ||
7f0547d4 | 245 | debug('loading %s', psModule.name); |
67888496 | 246 | |
7de41f10 | 247 | if (options.bundle) { |
0f9fe1ed | 248 | CACHE_VAR.bundleModules.push(psModule.name); |
7de41f10 AM |
249 | } |
250 | ||
0f9fe1ed | 251 | if (CACHE_VAR.rebuild) { |
7f0547d4 | 252 | const connect = () => { |
0f9fe1ed | 253 | if (!CACHE_VAR.ideServer) { |
254 | CACHE_VAR.ideServer = true; | |
7f0547d4 | 255 | |
256 | return ide.connect(psModule) | |
257 | .then(ideServer => { | |
0f9fe1ed | 258 | CACHE_VAR.ideServer = ideServer; |
7f0547d4 | 259 | return psModule; |
260 | }) | |
261 | .then(ide.loadWithRetry) | |
262 | .catch(error => { | |
0f9fe1ed | 263 | if (CACHE_VAR.ideServer.kill) { |
7f0547d4 | 264 | debug('ide failed to initially load modules, stopping the ide server process'); |
265 | ||
0f9fe1ed | 266 | CACHE_VAR.ideServer.kill(); |
7f0547d4 | 267 | } |
268 | ||
0f9fe1ed | 269 | CACHE_VAR.ideServer = null; |
7f0547d4 | 270 | |
271 | return Promise.reject(error); | |
272 | }) | |
273 | ; | |
274 | } | |
275 | else { | |
276 | return Promise.resolve(psModule); | |
277 | } | |
278 | }; | |
279 | ||
280 | const rebuild = () => | |
78e2b0d9 | 281 | ide.rebuild(psModule) |
282 | .then(() => | |
283 | toJavaScript(psModule) | |
466c0068 | 284 | .then(js => sourceMaps(psModule, js)) |
78e2b0d9 | 285 | .then(psModule.load) |
286 | .catch(psModule.reject) | |
287 | ) | |
288 | .catch(error => { | |
7f0547d4 | 289 | if (error instanceof ide.UnknownModuleError) { |
78e2b0d9 | 290 | // Store the modules that trigger a recompile due to an |
291 | // unknown module error. We need to wait until compilation is | |
292 | // done before loading these files. | |
293 | ||
0f9fe1ed | 294 | CACHE_VAR.deferred.push(psModule); |
78e2b0d9 | 295 | |
0f9fe1ed | 296 | if (!CACHE_VAR.compilationStarted) { |
297 | CACHE_VAR.compilationStarted = true; | |
7f0547d4 | 298 | |
299 | return compile(psModule) | |
300 | .then(() => { | |
0f9fe1ed | 301 | CACHE_VAR.compilationFinished = true; |
7f0547d4 | 302 | }) |
78e2b0d9 | 303 | .then(() => |
0f9fe1ed | 304 | Promise.map(CACHE_VAR.deferred, psModule => |
78e2b0d9 | 305 | ide.load(psModule) |
306 | .then(() => toJavaScript(psModule)) | |
466c0068 | 307 | .then(js => sourceMaps(psModule, js)) |
78e2b0d9 | 308 | .then(psModule.load) |
309 | ) | |
310 | ) | |
311 | .catch(error => { | |
0f9fe1ed | 312 | CACHE_VAR.deferred[0].reject(error); |
78e2b0d9 | 313 | |
0f9fe1ed | 314 | CACHE_VAR.deferred.slice(1).forEach(psModule => { |
78e2b0d9 | 315 | psModule.reject(new Error('purs-loader failed')); |
316 | }) | |
317 | }) | |
7f0547d4 | 318 | ; |
319 | } | |
320 | else { | |
78e2b0d9 | 321 | // The compilation has started. We must wait until it is |
322 | // done in order to ensure the module map contains all of | |
323 | // the unknown modules. | |
7f0547d4 | 324 | } |
325 | } | |
326 | else { | |
327 | debug('ide rebuild failed due to an unhandled error: %o', error); | |
328 | ||
78e2b0d9 | 329 | psModule.reject(error); |
7f0547d4 | 330 | } |
331 | }) | |
332 | ; | |
333 | ||
78e2b0d9 | 334 | connect().then(rebuild); |
7de41f10 | 335 | } |
0f9fe1ed | 336 | else if (CACHE_VAR.compilationFinished) { |
7f0547d4 | 337 | debugVerbose('compilation is already finished, loading module %s', psModule.name); |
7de41f10 | 338 | |
7f0547d4 | 339 | toJavaScript(psModule) |
466c0068 | 340 | .then(js => sourceMaps(psModule, js)) |
7f0547d4 | 341 | .then(psModule.load) |
342 | .catch(psModule.reject); | |
7de41f10 | 343 | } |
7f0547d4 | 344 | else { |
345 | // The compilation has not finished yet. We need to wait for | |
346 | // compilation to finish before the loaders run so that references | |
0f9fe1ed | 347 | // to compiled output are valid. Push the modules into the CACHE_VAR to |
7f0547d4 | 348 | // be loaded once the complation is complete. |
349 | ||
0f9fe1ed | 350 | CACHE_VAR.deferred.push(psModule); |
7f0547d4 | 351 | |
0f9fe1ed | 352 | if (!CACHE_VAR.compilationStarted) { |
353 | CACHE_VAR.compilationStarted = true; | |
7f0547d4 | 354 | |
355 | compile(psModule) | |
356 | .then(() => { | |
0f9fe1ed | 357 | CACHE_VAR.compilationFinished = true; |
7f0547d4 | 358 | }) |
359 | .then(() => { | |
360 | if (options.bundle) { | |
0f9fe1ed | 361 | return bundle(options, CACHE_VAR.bundleModules); |
7f0547d4 | 362 | } |
363 | }) | |
7f0547d4 | 364 | .then(() => |
0f9fe1ed | 365 | Promise.map(CACHE_VAR.deferred, psModule => |
78e2b0d9 | 366 | toJavaScript(psModule) |
466c0068 | 367 | .then(js => sourceMaps(psModule, js)) |
78e2b0d9 | 368 | .then(psModule.load) |
7f0547d4 | 369 | ) |
370 | ) | |
371 | .catch(error => { | |
0f9fe1ed | 372 | CACHE_VAR.deferred[0].reject(error); |
7f0547d4 | 373 | |
0f9fe1ed | 374 | CACHE_VAR.deferred.slice(1).forEach(psModule => { |
7f0547d4 | 375 | psModule.reject(new Error('purs-loader failed')); |
376 | }) | |
377 | }) | |
378 | ; | |
379 | } | |
380 | else { | |
381 | // The complation has started. Nothing to do but wait until it is | |
382 | // done before loading all of the modules. | |
383 | } | |
7de41f10 AM |
384 | } |
385 | } |