Move tasks to build directory

build/tasks/clean-task.coffee

@@ -0,0 +1,21 @@
+path = require 'path'
+os = require 'os'
+
+module.exports = (grunt) ->
+  {rm} = require('./task-helpers')(grunt)
+
+  grunt.registerTask 'partial-clean', 'Delete some of the build files', ->
+    tmpdir = if process.platform is 'win32' then os.tmpdir() else '/tmp'
+
+    rm grunt.config.get('atom.buildDir')
+    rm require('../src/coffee-cache').cacheDir
+    rm require('../src/less-compile-cache').cacheDir
+    rm path.join(tmpdir, 'atom-cached-atom-shells')
+    rm 'atom-shell'
+
+  grunt.registerTask 'clean', 'Delete all the build files', ->
+    homeDir = process.env[if process.platform is 'win32' then 'USERPROFILE' else 'HOME']
+
+    rm 'node_modules'
+    rm path.join(homeDir, '.atom', '.node-gyp')
+    grunt.task.run('partial-clean')