text: require('./check-versions')();
  
  process.env.NODE_ENV = 'production';
  
  var ora = require('ora');
  var rm = require('rimraf');
  var path = require('path');
  var chalk = require('chalk');
  var webpack = require('webpack');
  var config = require('../config');
  var webpackConfig = require('./webpack.prod.conf');
  
  var spinner = ora('building for production...');
  spinner.start();
  
  rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
    if (err) throw err;
    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\n');
  
      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'
      ))
    })
  });
  