worker.service.ts

initialize() {
  if ('serviceWorker' in navigator && 'BroadcastChannel' in window) {
    // ...
    // Subscribe to broadcast channel from worker
    const apiUpdates = new BroadcastChannel(BROADCAST_CHANNEL);
    apiUpdates.addEventListener('message', (event: any) => {
      if (event.data.type === CACHE_UPDATED) {
        const { cacheName, updatedURL } = event.data.payload;
        this.retrieveAndSendData(cacheName, updatedURL);
      }
    });
  }
}

private dispatchData(cacheName: string, data: any) {
  switch (cacheName) {
    case 'api-things': {
      return this.store$.dispatch(ThingsActions.update(data));
    }
  }
}

private async retrieveAndSendData(cacheName: string, updatedURL: string) {
  const cache = await caches.open(cacheName);
  const response = await cache.match(updatedURL);
  if (response) {
    const responseJson = await response.json();
    this.dispatchData(cacheName, responseJson);
  }
}