webpack.prod.js

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

module.exports = merge(common, {
  mode: 'production',
  output: {
    filename: 'main[hash].js',
    path: path.resolve(__dirname, 'dist'),
    clean: true,
  },
  optimization: {
    minimize: true,
    minimizer: [
      new HtmlWebpackPlugin({
        template: './src/template.html',
        favicon: './src/images/favicon.png',
        minify: {
          removeAttributeQuotes: true,
          collapseWhitespace: true,
          removeComments: true,
          keepClosingSlash: true,
          removeScriptTypeAttributes: true,
          removeStyleLinkTypeAttributes: true,
          useShortDoctype: true,
        },
      }),
      new CssMinimizerPlugin({
        minify: [
          CssMinimizerPlugin.cssnanoMinify,
          CssMinimizerPlugin.cleanCssMinify,
        ],
      }),
    ],
  },
  plugins: [new MiniCssExtractPlugin({ filename: '[name][hash].css' })],
  module: {
    rules: [
      {
        test: /\.s[ac]ss$/,
        use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
      },
    ],
  },
});