text: '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 ' + process.env.env_config + ' environment...'
  )
  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,
          chunks: false,
          chunkModules: false
        }) + '\n\n'
      )
  
      if (stats.hasErrors()) {
        console.log(chalk.red('  Build failed with errors.\n'))
        process.exit(1)
      }
  
      console.log(chalk.cyan('  Build complete.\n'))
      console.log(
        chalk.yellow(
          '  Tip: built files are meant to be served over an HTTP server.\n' +
            "  Opening index.html over file:// won't work.\n"
        )
      )
    })
  })
  