Server Side Routing in React

ss-routing.js

/**
 * Async IIFE React
 * Renders Spinner then tries to fetch routes from server.
 * If routes are not available it renders application
 * with default routes.
 */
(async () => {
  ReactDOM.render(<ProgressBar />, elementMountPoint);
  try {
    const newContext = {
      store,
      routes: dynamicRoutes(context.routes, await fetchMenuByHost()),
    };
    ReactDOM.render(<App context={newContext} />, elementMountPoint);
  } catch (e) {
    ReactDOM.render(<App context={context} />, elementMountPoint);
  }
})();