text: const path = require('path')
  const HtmlWebpackPlugin = require('html-webpack-plugin')
  module.exports = {
      entry: './src/index.js',
      output: {
          path: __dirname,
          filename: './release/bundle.js'
      },
      module: {
          rules: [{
              test: /\.js?$/,
              exclude: /(node_modules)/,
              loader: 'babel-loader'
          }]
      },
      plugins: [
          new HtmlWebpackPlugin({
              template: './index.html'
          })
      ],
      devServer: {
          contentBase: path.join(__dirname, './release'), // 根目录
          open: true, // 自动打开浏览器
          port: 9000
      }
  }