build.js

require('shelljs/global')
env.NODE_ENV = 'production'

var path = require('path')
var config = require('../config')
var ora = require('ora')
var webpack = require('webpack')
var webpackConfig = require('./webpack.prod.conf')

console.log('  Tip:\n' +
  '  Built files are meant to be served over an HTTP server.\n' +
  '  Opening index.html over file:// won\'t work.\n')

var spinner = ora('building for production...')
spinner.start()

var assetsPath = path.join(config.build.assetsRoot, config.build.assetsSubDirectory)
rm('-rf', assetsPath)
mkdir('-p', assetsPath)
cp('-R', 'static/', assetsPath)

webpack(webpackConfig, function(err, stats) {
  spinner.stop()
  if (err)
    throw err
  process.stdout.write(stats.toString({colors: true, modules: false, children: false, chunks: false, chunkModules: false}) + '\n')
})