webpack.config.js

module.exports = {
  entry: {
    main: [appPath("src", "index.ts"), appPath("src", "css", "styles.scss")]
  },
  output: {
    filename: "bundle.[hash].js",
    path: appPath("build")
  },
  devServer: {
    historyApiFallback: {
      index: "index.html",
      rewrites: [
        // should redirect to bundle with js
        /**
        * How to reference bundle.[hash].js from output here?
        */
        { from: /.*\/bundle.*/, to: "/bundle.[hash].js" },
        // should redirect other requests to index.html
        { from: /./, to: "/" }
      ]
    }
  }
};