Temporarily add faster script to build Atom

script/tdd

@@ -0,0 +1,42 @@
+#!/usr/bin/env node
+
+'use strict'
+
+// Needed so we can require src/module-cache.coffee during generateModuleCache
+require('coffee-script/register')
+require('colors')
+
+const yargs = require('yargs')
+const argv = yargs
+  .usage('Usage: $0 [options]')
+  .help('help')
+  .describe('code-sign',  'Code-sign executables (macOS and Windows only)')
+  .describe('create-windows-installer', 'Create installer (Windows only)')
+  .describe('create-debian-package', 'Create .deb package (Linux only)')
+  .describe('create-rpm-package', 'Create .rpm package (Linux only)')
+  .describe('compress-artifacts', 'Compress Atom binaries (and symbols on macOS)')
+  .describe('install', 'Install Atom')
+  .wrap(yargs.terminalWidth())
+  .argv
+
+const cleanOutputDirectory = require('./lib/fast-clean-output-directory')
+const copyAssets = require('./lib/fast-copy-assets')
+const generateMetadata = require('./lib/generate-metadata')
+const generateModuleCache = require('./lib/generate-module-cache')
+const generateStartupSnapshot = require('./lib/generate-startup-snapshot')
+const packageApplication = require('./lib/package-application')
+const transpileBabelPaths = require('./lib/fast-transpile-babel-paths')
+const transpileCoffeeScriptPaths = require('./lib/fast-transpile-coffee-script-paths')
+
+process.on('unhandledRejection', function (e) {
+  console.error(e.stack || e)
+  process.exit(1)
+})
+
+cleanOutputDirectory()
+copyAssets()
+transpileBabelPaths()
+transpileCoffeeScriptPaths()
+generateModuleCache()
+generateMetadata()
+packageApplication().then(generateStartupSnapshot)