webpack.config.js

const HtmlWebPackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CopyPlugin = require('copy-webpack-plugin');
const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');
const zopfli = require('@gfx/zopfli');

module.exports = {
  entry: './src/index.js',
  output: {
    filename: '[name].[contenthash].js',
    path: path.resolve(__dirname, 'dist')
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader",
            options: { minimize: true }
          }
        ]
      },
      {
        test: /\.css$/,
        use:  [  'style-loader', MiniCssExtractPlugin.loader, 'css-loader']
      },
      {
        test: /\.scss$/,
        use: ['style-loader', MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader']
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: "[path][name].[hash].[ext]"
            }
          }
        ]
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebPackPlugin({
      inject: true,
      template: "./src/index.html",
      filename: "index.html"
    }),
    new MiniCssExtractPlugin({
      filename: 'style.css'
    }),
    new CopyPlugin({patterns: ['public']}),
    new CompressionPlugin({
      compressionOptions: {
        numiterations: 15,
      },
      algorithm(input, compressionOptions, callback) {
        return zopfli.gzip(input, compressionOptions, callback);
      },
    }),
  ],
  optimization: {
      moduleIds: 'deterministic',
      runtimeChunk: 'single',
      splitChunks: {
          cacheGroups: {
              vendor: {
                  test: /[\\/]node_modules[\\/]/,
                  name: 'vendors',
                  chunks: 'all',
              }
          }
      }
  }
};