text: //导入公共对象
  const common = require('./webpack.common')
  const merge = require('webpack-merge')
  const { CleanWebpackPlugin } = require('clean-webpack-plugin')
  const CopyWebpackPlugin = require('copy-webpack-plugin')
  
  module.exports = merge(common, {
      mode: 'production',
      //数组中需要合并 而不是替换
      plugins: [
          new CleanWebpackPlugin(),
          new CopyWebpackPlugin(['public'])
      ]
  })