WebTest/webpack-demo/webpack.prod.js

const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
module.exports = {
  mode: 'production', // ['development', 'production']
  entry: path.join(__dirname, 'src', 'index.js'),
  output: {
    filename: 'bundle.[contenthash].js',
    path: path.join(__dirname, 'dist')
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: ['babel-loader'],
        include: path.join(__dirname, 'src'),
        exclude: /node_modules/
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.join(__dirname, 'src', 'index.html'),
      filename: 'index.html'
    })
  ]
}