gistfile1.txt

Step 1:
import React, { lazy, Suspense } from 'react';

Step 2:
// change this:
import BusinessList from 'screens/businesses/list';

// to this:
const BusinessList = lazy(() => import('screens/businesses/list'));

Step 3:
// wrap switch in <Suspense> and provide a fallback (in this a loader).
<Suspense fallback={<Loader />}>
  <Switch>
    // ...routes
  </Switch>
</Suspense>