🐎 Minimize dependencies loaded before the module-cache

src/babel.js

@@ -1,6 +1,5 @@
 'use strict'
 
-var _ = require('underscore-plus')
 var crypto = require('crypto')
 var path = require('path')
 var defaultOptions = require('../static/babelrc.json')
@@ -45,7 +44,10 @@ exports.compile = function(sourceCode, filePath) {
     babel = require('babel-core')
   }
 
-  var options = _.defaults({filename: filePath}, defaultOptions)
+  var options = {filename: filePath}
+  for (var key in defaultOptions) {
+    options[key] = defaultOptions[key]
+  }
   return babel.transform(sourceCode, options).code
 }
 

src/compile-cache.js

@@ -1,9 +1,8 @@
 'use strict'
 
 var path = require('path')
-var CSON = require('season')
 var fs = require('fs-plus')
-var _ = require('underscore-plus')
+var CSON = null
 
 var COMPILERS = {
   '.js': require('./babel'),
@@ -13,7 +12,9 @@ var COMPILERS = {
 
 var cacheDirectory = null
 
-_.each(COMPILERS, function (compiler, extension) {
+Object.keys(COMPILERS).forEach(function (extension) {
+  var compiler = COMPILERS[extension]
+
   Object.defineProperty(require.extensions, extension, {
     enumerable: true,
     writable: false,
@@ -34,7 +35,6 @@ exports.setAtomHomeDirectory = function (atomHome) {
 
 exports.setCacheDirectory = function (directory) {
   cacheDirectory = directory
-  CSON.setCacheDir(path.join(cacheDirectory, 'cson'));
 }
 
 exports.getCacheDirectory = function () {
@@ -46,6 +46,7 @@ exports.addPathToCache = function (filePath, atomHome) {
   var extension = path.extname(filePath)
 
   if (extension === '.cson') {
+    CSON = CSON || require('season')
     CSON.readFileSync(filePath)
   } else {
     var compiler = COMPILERS[extension]

static/index.js

@@ -78,6 +78,7 @@ var setupWindow = function(loadSettings) {
   });
 
   setupVmCompatibility();
+  setupCsonCache(compileCache.getCacheDirectory())
 
   require(loadSettings.bootstrapScript);
   require('ipc').sendChannel('window-command', 'window:loaded');
@@ -101,6 +102,10 @@ var setupAtomHome = function() {
   }
 }
 
+var setupCsonCache = function(cacheDir) {
+  require('season').setCacheDir(path.join(cacheDir, 'cson'));
+}
+
 var setupVmCompatibility = function() {
   var vm = require('vm');
   if (!vm.Script.createContext) {