webpack.config.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");

const isDev = process.env.NODE_ENV === "development";

module.exports = {
  context: path.resolve(__dirname, "src"),
  mode: "development",
  entry: { main: "./scripts/index.js" },
  output: {
    filename: "[name].[contenthash].js",
    path: path.resolve(__dirname, "dist"),
    assetModuleFilename: "assets/[name].[contenthash][ext][query]",
    clean: true,
  },
  optimization: {
    moduleIds: "deterministic",
    runtimeChunk: "single",
    splitChunks: {
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name: "vendors",
          chunks: "all",
        },
      },
    },
    minimizer: [new CssMinimizerPlugin()],
  },
  devtool: isDev ? "source-map" : false,
  devServer: {
    open: true,
    static: {
      directory: path.join(__dirname, "dist"),
    },
    port: 9000,
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "[name].[contenthash].css",
      chunkFilename: "[id].[contenthash].css",
    }),
    new HtmlWebpackPlugin({
      template: "./index.pug",
      title: "How to learn",
      filename: "index.html",
    }),
  ],

  module: {
    rules: [
      {
        test: /\.html$/i,
        loader: "html-loader",
      },
      {
        test: /\.s[ac]ss$/i,
        use: [
          isDev ? "style-loader" : MiniCssExtractPlugin.loader,
          "css-loader",
          {
            loader: "postcss-loader",
            options: {
              postcssOptions: {
                plugins: [["postcss-preset-env"]],
              },
            },
          },
          "sass-loader",
        ],
      },
      {
        test: /\.(woff|woff2|eot|ttf|otf)$/i,
        type: "asset/resource",
      },
      {
        test: /\.(png|svg|jpe?g|gif|webp|ico)$/i,
        type: "asset/resource",
      },
      {
        test: /\.webmanifest$/i,
        use: "webpack-webmanifest-loader",
        type: "asset/resource",
      },
      {
        test: /\.pug$/,
        loader: "pug-loader",
        exclude: /(node_modules|bower_components)/,
      },
      {
        test: /\.m?js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env"],
          },
        },
      },
    ],
  },
};