浅谈Vue-cli 命令行工具分析(5)

'use strict'

process.env.NODE_ENV = 'production'; // 设置当前环境为生产环境
const ora = require('ora'); //loading...进度条
const rm = require('rimraf'); //删除文件 'rm -rf'
const chalk = require('chalk'); //stdout颜色设置
const webpack = require('webpack');
const path = require('path');
const config = require('../config');
const webpackConfig = require('./webpack.prod.conf');

const spinner = ora('正在编译...');
spinner.start();

// 清空文件夹
rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
  if (err) throw err;
  // 删除完成回调函数内执行编译
  webpack(webpackConfig, function (err, stats) {
    spinner.stop();
    if (err) throw err;
  
  // 编译完成，输出编译文件
    process.stdout.write(stats.toString({
      colors: true,
      modules: false,
      children: false,
      chunks: false,
      chunkModules: false
    }) + '\n\n');

  //error
  if (stats.hasErrors()) {
    console.log(chalk.red(' 编译失败出现错误.\n'));
    process.exit(1);
  }

  //完成
  console.log(chalk.cyan(' 编译成功.\n'))
  console.log(chalk.yellow(
   ' file:// 无用，需http(s)://.\n'
  ))
 })

})