'use strict'
  require('./check-versions')()
  
  process.env.NODE_ENV = 'production'
  
  const ora = require('ora')
  const rm = require('rimraf')
  const path = require('path')
  const chalk = require('chalk')
  const webpack = require('webpack')
  const config = require('../config')
  const webpackConfig = require('./webpack.prod.conf')
  
  const spinner = ora('building for production...')
  spinner.start()
  
  rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
    if (err) throw err
    webpack(webpackConfig, (err, stats) => {
      spinner.stop()
      if (err) throw err
      process.stdout.write(stats.toString({
        colors: true,
        modules: false,
        children: false, // If you are using ts-loader, setting this to true will make TypeScript errors show up during build.
        chunks: false,
        chunkModules: false
      }) + '
  
  ')
  
      if (stats.hasErrors()) {
        console.log(chalk.red('  Build failed with errors.
  '))
        process.exit(1)
      }
  
      console.log(chalk.cyan('  Build complete.
  '))
      console.log(chalk.yellow(
        '  Tip: built files are meant to be served over an HTTP server.
  ' +
        '  Opening index.html over file:// won\'t work.
  '
      ))
    })
  })