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-rw-r--r--src/index.js64
1 files changed, 3 insertions, 61 deletions
diff --git a/src/index.js b/src/index.js
index e49fd2c..047927c 100644
--- a/src/index.js
+++ b/src/index.js
@@ -3,18 +3,15 @@
3const debug = require('debug')('purs-loader') 3const debug = require('debug')('purs-loader')
4const loaderUtils = require('loader-utils') 4const loaderUtils = require('loader-utils')
5const Promise = require('bluebird') 5const Promise = require('bluebird')
6const fs = Promise.promisifyAll(require('fs'))
7const path = require('path') 6const path = require('path')
8const jsStringEscape = require('js-string-escape')
9const PsModuleMap = require('./PsModuleMap'); 7const PsModuleMap = require('./PsModuleMap');
10const Psc = require('./Psc'); 8const Psc = require('./Psc');
11const PscIde = require('./PscIde'); 9const PscIde = require('./PscIde');
10const toJavaScript = require('./to-javascript');
12const dargs = require('./dargs'); 11const dargs = require('./dargs');
13const spawn = require('cross-spawn').sync 12const spawn = require('cross-spawn').sync
14const eol = require('os').EOL 13const eol = require('os').EOL
15 14
16const requireRegex = /require\(['"]\.\.\/([\w\.]+)['"]\)/g
17
18module.exports = function purescriptLoader(source, map) { 15module.exports = function purescriptLoader(source, map) {
19 const callback = this.async() 16 const callback = this.async()
20 const config = this.options 17 const config = this.options
@@ -49,6 +46,7 @@ module.exports = function purescriptLoader(source, map) {
49 bundleNamespace: 'PS', 46 bundleNamespace: 'PS',
50 bundle: false, 47 bundle: false,
51 warnings: true, 48 warnings: true,
49 watch: false,
52 output: 'output', 50 output: 'output',
53 src: [ 51 src: [
54 path.join('src', '**', '*.purs'), 52 path.join('src', '**', '*.purs'),
@@ -151,7 +149,7 @@ module.exports = function purescriptLoader(source, map) {
151 if (!cache.compilationStarted) { 149 if (!cache.compilationStarted) {
152 return Psc.compile(psModule) 150 return Psc.compile(psModule)
153 .then(() => PsModuleMap.makeMap(options.src).then(map => { 151 .then(() => PsModuleMap.makeMap(options.src).then(map => {
154 debug('rebuilt module map'); 152 debug('rebuilt module map after compile');
155 cache.psModuleMap = map; 153 cache.psModuleMap = map;
156 })) 154 }))
157 .then(() => Promise.map(cache.deferred, psModule => { 155 .then(() => Promise.map(cache.deferred, psModule => {
@@ -164,59 +162,3 @@ module.exports = function purescriptLoader(source, map) {
164 }) 162 })
165 } 163 }
166} 164}
167
168function updatePsModuleMap(psModule) {
169 const options = psModule.options
170 const cache = psModule.cache
171 const filePurs = psModule.srcPath
172 if (!cache.psModuleMap) {
173 debug('module mapping does not exist');
174 return PsModuleMap.makeMap(options.src).then(map => {
175 cache.psModuleMap = map;
176 return cache.psModuleMap;
177 });
178 }
179 else {
180 return PsModuleMap.makeMapEntry(filePurs).then(result => {
181 const map = Object.assign(cache.psModuleMap, result)
182 cache.psModuleMap = map;
183 return cache.psModuleMap;
184 });
185 }
186}
187
188// The actual loader is executed *after* purescript compilation.
189function toJavaScript(psModule) {
190 const options = psModule.options
191 const cache = psModule.cache
192 const bundlePath = path.resolve(options.bundleOutput)
193 const jsPath = cache.bundle ? bundlePath : psModule.jsPath
194
195 debug('loading JavaScript for', psModule.name)
196
197 return Promise.props({
198 js: fs.readFileAsync(jsPath, 'utf8'),
199 psModuleMap: updatePsModuleMap(psModule)
200 }).then(result => {
201 let js = ''
202
203 if (options.bundle) {
204 // if bundling, return a reference to the bundle
205 js = 'module.exports = require("'
206 + jsStringEscape(path.relative(psModule.srcDir, options.bundleOutput))
207 + '")["' + psModule.name + '"]'
208 } else {
209 // replace require paths to output files generated by psc with paths
210 // to purescript sources, which are then also run through this loader.
211 js = result.js
212 .replace(requireRegex, (m, p1) => {
213 return 'require("' + jsStringEscape(result.psModuleMap[p1].src) + '")'
214 })
215 .replace(/require\(['"]\.\/foreign['"]\)/g, (m, p1) => {
216 return 'require("' + jsStringEscape(result.psModuleMap[psModule.name].ffi) + '")'
217 })
218 }
219
220 return js
221 })
222}