webpack.config.js

const path = require("path");

const BundleAnalyzerPlugin =
  require("webpack-bundle-analyzer").BundleAnalyzerPlugin;

const PATHS = {
  app: path.join(__dirname, "src/index.js"),
};

module.exports = {
  entry: {
    app: PATHS.app,
  },
  output: {
    path: __dirname + "/dist",
    filename: "bundle.js",
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        loader: "babel-loader",
        exclude: /node_modules/,
        include: /src/,
        sideEffects: false,
      },
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"],
      },
      {
        test: /\.png$/,
        type: "asset/inline",
      },
    ],
  },
  resolve: {
    extensions: [".jsx", ".js"],
    fallback: { buffer: false },
  },
  devtool: "source-map",
  plugins: [
    new BundleAnalyzerPlugin({
      analyzerMode: process.env.ANALYZE_MODE || "disabled",
    }),
  ],
};