Ensure that all imported files are watched

In order to handle the case where a new PureScript file is imported, but
fails to compile, the purs-loader now tracks imports for each PureScript
file in order to append any additional imports to the resulting JS.

This ensures that webpack will watch the new file even before it
successfully compiles.

1 files changed, 1 insertions, 60 deletions

diff --git a/src/index.js b/src/index.js
index 249f472..3f5e6a8 100644
--- a/src/index.js
+++ b/src/index.js
@@ -3,18 +3,15 @@
 const debug = require('debug')('purs-loader')
 const loaderUtils = require('loader-utils')
 const Promise = require('bluebird')
-const fs = Promise.promisifyAll(require('fs'))
 const path = require('path')
-const jsStringEscape = require('js-string-escape')
 const PsModuleMap = require('./PsModuleMap');
 const Psc = require('./Psc');
 const PscIde = require('./PscIde');
+const toJavaScript = require('./to-javascript');
 const dargs = require('./dargs');
 const spawn = require('cross-spawn').sync
 const eol = require('os').EOL
 
-const requireRegex = /require\(['"]\.\.\/([\w\.]+)['"]\)/g
-
 module.exports = function purescriptLoader(source, map) {
   const callback = this.async()
   const config = this.options
@@ -164,59 +161,3 @@ module.exports = function purescriptLoader(source, map) {
       })
   }
 }
-
-function updatePsModuleMap(psModule) {
-  const options = psModule.options
-  const cache = psModule.cache
-  const filePurs = psModule.srcPath
-  if (!cache.psModuleMap) {
-    debug('module mapping does not exist');
-    return PsModuleMap.makeMap(options.src).then(map => {
-      cache.psModuleMap = map;
-      return cache.psModuleMap;
-    });
-  }
-  else {
-    return PsModuleMap.makeMapEntry(filePurs).then(result => {
-      const map = Object.assign(cache.psModuleMap, result)
-      cache.psModuleMap = map;
-      return cache.psModuleMap;
-    });
-  }
-}
-
-// The actual loader is executed *after* purescript compilation.
-function toJavaScript(psModule) {
-  const options = psModule.options
-  const cache = psModule.cache
-  const bundlePath = path.resolve(options.bundleOutput)
-  const jsPath = cache.bundle ? bundlePath : psModule.jsPath
-
-  debug('loading JavaScript for', psModule.name)
-
-  return Promise.props({
-    js: fs.readFileAsync(jsPath, 'utf8'),
-    psModuleMap: updatePsModuleMap(psModule)
-  }).then(result => {
-    let js = ''
-
-    if (options.bundle) {
-      // if bundling, return a reference to the bundle
-      js = 'module.exports = require("'
-             + jsStringEscape(path.relative(psModule.srcDir, options.bundleOutput))
-             + '")["' + psModule.name + '"]'
-    } else {
-      // replace require paths to output files generated by psc with paths
-      // to purescript sources, which are then also run through this loader.
-      js = result.js
-        .replace(requireRegex, (m, p1) => {
-          return 'require("' + jsStringEscape(result.psModuleMap[p1].src) + '")'
-        })
-        .replace(/require\(['"]\.\/foreign['"]\)/g, (m, p1) => {
-          return 'require("' + jsStringEscape(result.psModuleMap[psModule.name].ffi) + '")'
-        })
-    }
-
-    return js
-  })
-}