How to properly set up SSR on laravel + react.js?

Question

JavaScript

For some reason, laravel swears at webpack roughly speaking, it says that it is impossible to execute the file because it contains a window
object using https://github.com/spatie/laravel-server-side-rendering
here is the webpack config:

const CleanWebpackPlugin = require("clean-webpack-plugin"); //installed via npm
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
const uniqid = require("uniqid");
let mix = require("laravel-mix");
let webpack = require("webpack");
let CompressionPlugin = require("compression-webpack-plugin");

/*
 |--------------------------------------------------------------------------
 | Mix Asset Management
 |--------------------------------------------------------------------------
 |
 | Mix provides a clean, fluent API for defining some Webpack build steps
 | for your Laravel application. By default, we are compiling the Sass
 | file for the application as well as bundling up all the JS files.
 |
 */

mix
  .react("resources/assets/js/app.js", "public/js")
  .react("resources/assets/js/app-server.js", "public/js")
  .sass("resources/assets/sass/app.scss", "public/css")
  .version();

let plugins = [new CleanWebpackPlugin(["public/js/*"])];

if (process.env.NODE_ENV === "production") {
  plugins.push(
    new UglifyJsPlugin({
      cache: true,
      parallel: true,
      uglifyOptions: {
        compress: false,
        ecma: 6,
        mangle: true
      },
      sourceMap: true
    })
  );

  plugins.push(new webpack.optimize.OccurrenceOrderPlugin());

  plugins.push(
    new CompressionPlugin({
      asset: "[path].gz[query]",
      algorithm: "gzip",
      test: /\.js$|\.html$/,
      threshold: 10240,
      minRatio: 0.8
    })
  );
}

mix.webpackConfig({
  output: {
    // filename: "js/app.js",
    chunkFilename: "js/[name]." + uniqid() + ".bundle.js",
    pathinfo: true
  },

  plugins: plugins
});