webpack.config.js

// Generated using webpack-cli https://github.com/webpack/webpack-cli

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const WorkboxWebpackPlugin = require("workbox-webpack-plugin");
const CopyWebpackPlugin = require("copy-webpack-plugin");

const isProduction = process.env.NODE_ENV == "production";

const stylesHandler = MiniCssExtractPlugin.loader;

const config = {
  entry: "./src/index.js",
  output: {
    path: path.resolve(__dirname, "dist"),
    filename: "main.[contenthash].js",
  },
  optimization: {
    minimize: false,
    splitChunks: {
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name: "vendor",
          chunks: "all",
          enforce: true,
        },
      },
    },
  },
  resolve: {
    fallback: {
      util: require.resolve("util/"),
    },
  },
  devServer: {
    open: true,
    host: "localhost",
  },
  devtool: "source-map",
  plugins: [
    new HtmlWebpackPlugin({
      template: "index.html",
      favicon: "./src/assets/favicon.ico",
    }),

    new MiniCssExtractPlugin(),
    new CopyWebpackPlugin({
      patterns: [
        {
          from: "./src/assets",
          to: "assets",
        },
        { from: "./src/assets/favicon.ico" },
      ],
    }),
    // Add your plugins here
    // Learn more about plugins from https://webpack.js.org/configuration/plugins/
  ],
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/i,
        loader: "babel-loader",
      },
      {
        test: /\.css$/i,
        use: [stylesHandler, "css-loader"],
      },
      {
        test: /\.styl$/i,
        use: [stylesHandler, "css-loader", "stylus-loader"],
      },
      {
        test: /\.(eot|svg|ttf|woff|woff2|png|jpg|gif|json|ico|mp3)$/i,
        type: "asset",
      },

      // Add your rules for custom modules here
      // Learn more about loaders from https://webpack.js.org/loaders/
    ],
  },
};

module.exports = () => {
  if (isProduction) {
    config.mode = "production";

    config.plugins.push(new WorkboxWebpackPlugin.GenerateSW());
  } else {
    config.mode = "development";
  }
  return config;
};