webpack.config.js

const webpack = require("webpack");
const path = require("path");
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const CompressionPlugin = require('compression-webpack-plugin');

const config = {
  entry: "./src/index.js", //identify entry point for webpack
  output: {
    path: path.resolve(__dirname, "./public"), //identify where bundle will be built
    filename: "bundle.js",
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: [
              "@babel/preset-env",
              "@babel/preset-react",
              // "@babel-preset-airbnb",
            ],
          },
        },
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      }
    ],
  },
  resolve: {
    extensions: [".js", ".jsx"],
  },
  plugins: [
    new BundleAnalyzerPlugin(),
    new CompressionPlugin({
      filename: '[path].gz[query]',
      algorithm: 'gzip',
      test: /\.js$|\.css$|\.html$/,
      threshold: 10240,
      minRatio: 0.8,
    }),
  ]
};

module.exports = config;