webpack.prod.js

const CopyWebpackPlugin = require('copy-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
const common = require('./webpack.common');
const { merge } = require('webpack-merge');
const path = require('path');

module.exports = merge(common, {
  mode: 'production',
  target: 'browserslist',
  optimization: {
    minimize: true,
    minimizer: [
      new CssMinimizerPlugin(),
      new TerserPlugin({
        test: /\.js(\?.*)?$/i
      })
    ]
  },
  output: {
    filename: '[name].[contenthash].js',
    path: path.resolve(__dirname, 'dist'),
    assetModuleFilename: './assets/[name][ext]'
  },
  plugins: [
    new CleanWebpackPlugin(),
    new MiniCssExtractPlugin(),
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: './src/index.html'
    }),
    new HtmlWebpackPlugin({
      filename: '404.html',
      template: './src/404.html'
    })
  ]
});