webpack.config.js

const path = require("path");
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CleanWebpackPlugin = require("clean-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");

module.exports = {
  devServer: {
    contentBase: path.join(__dirname, "/public/"),
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
        },
      },
      {
        test: /\.scss$/,
        use: [
          "style-loader",
          MiniCssExtractPlugin.loader,
          "css-loader",
          "sass-loader",
        ],
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: ["file-loader"],
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader",
            options: {
              minimize: true,
            },
          },
        ],
      },
    ],
  },
  optimization: {
    minimizer: [
      new TerserPlugin({
        cache: true,
        parallel: true,
        sourceMap: true,
      }),
      new OptimizeCSSAssetsPlugin({
        cssProcessorOptions: { map: { inline: false, annotations: true } },
      }),
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      // Options similar to the same options in webpackOptions.output
      // both options are optional
      filename: "[name].css",
      chunkFilename: "[id].css",
    }),
    new HtmlWebpackPlugin({
      inject: false,
      hash: false,
      template: "./public/index.html",
      filename: "index.html",
    }),
    new CleanWebpackPlugin("dist", {}),
  ],
};