Register custom service worker when cra-append-sw operated in dev mode

index.tsx

if ('serviceWorker' in navigator && process.env.NODE_ENV !== 'production') {
  console.log('Trying to register custom sw');
  navigator.serviceWorker
    .register('./firebase-messaging-sw.js')
    .then(function (registration) {
      console.log('Registration successful, scope is:', registration.scope);
    })
    .catch(function (err) {
      console.log('Service worker registration failed, error:', err);
    });
}