React Loadable cool options!

react_loadable_cool_options.js

function Loading(props) {
  if (props.error) {
    return <div>Something went wrong! <button onClick={ props.retry }>Retry</button></div>;
  } else if (props.timedOut) {
    return <div>Seems like your net is slow... <button onClick={ props.retry }>Retry</button></div>;
  } else if (props.pastDelay) {
    return <div>Loading...</div>;
  } else {
    return null;
  }
}

Loadable({
  loader: () => import('./components/Bar'),
  loading: Loading,
  delay: 500, // 0.5 seconds
  timeout: 150000, // 15 seconds
});