webpack.config.js

const path = require('path');
const SRC_DIR = path.resolve(__dirname, 'client');
const DIST_DIR = path.resolve(__dirname, 'dist');

const HtmlWebpackPlugin = require('html-webpack-plugin');
const NodePolyfillPlugin = require('node-polyfill-webpack-plugin');

module.exports = {
  mode: "development",
  watch: true,
  devtool: "eval-source-map",
  stats: {
    excludeModules: /node_modules/,
  },
  entry: {
    app: path.resolve(SRC_DIR, "index.jsx"),
  },
  output: {
    path: DIST_DIR,
    publicPath: "/",
    filename: "[name].bundle.js",
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env", "@babel/preset-react"],
          },
        },
      },
      {
        test: /\.css$/i,
        use: ["style-loader", "css-loader"],
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.resolve(SRC_DIR, 'index.html'),
      inject: 'body',
    }),
    new NodePolyfillPlugin(),
  ],
  devServer: {
    historyApiFallback: true,
  },
};