95      updateSWSafe(registration, message, log, persistenceService).catch(
 96        (error: unknown): void => {
 97          // Rethrow error into React rendering stack
 98          throw error 99        }
100      )
101    }

 67  WrappedComponent: React.ComponentType<P & ServiceWorkerUpdaterProps>,
 68  {
 69    message = { type: 'SKIP_WAITING' },
 70    log = () => console.log('Controller loaded'), 71    persistenceService = new NullPersistenceService()
 72  }: WithServiceWorkerUpdaterOptions = {}
 73) {

 24  persistenceService: PersistenceService
 25): Promise<void> => {
 26  if (!registration) {
 27    const { controller } = navigator.serviceWorker 28    if (controller) { 29      // If we have controller, use it's URL to re-register it 30      const registrationFromAPI = await navigator.serviceWorker.register( 31        controller.scriptURL 32      ) 33 34      // If we could register it and there is a waiting SW, use it 35      if (registrationFromAPI?.waiting) { 36        updateSW(registrationFromAPI, message, log, persistenceService) 37      } else { 38        throw new Error( 39          'ServiceWorkerRegistration not found and no waiting ServiceWorker found' 40        ) 41      } 42    } else { 43      throw new Error( 44        'ServiceWorkerRegistration not found and no ServiceWorker detected'
 45      )
 46    }

20     * Register an event to controllerchange, wich will be fired when the
21     * `waiting` SW executes `skipWaiting`
22     */
23    let preventDevToolsReloadLoop = false24    navigator.serviceWorker.addEventListener('controllerchange', () => {25      /*26       * Ensure refresh is only called once.27       * This works around a bug in "force update on reload".28       */29      if (preventDevToolsReloadLoop) {30        return31      }3233      preventDevToolsReloadLoop = true34      log()3536      // Clear the persisted state about service worker update being available37      persistenceService.clear()3839      // Finally, refresh the page40      global.location.reload()41    })4243    /*44     * Send a message to the new serviceWorker to activate itself45     * by executing its own `skipWaiting` method46     * The SW must register an event listener to messages which47     * identifies this `message` and runs its `skipWaiting` method48     */49    registration.waiting.postMessage(message)50  }
51}
52

 3const onServiceWorkerUpdate = (
 4  registration: ServiceWorkerRegistration
 5): void => {
 6  const event = new CustomEvent('onNewServiceWorker', { 7    detail: { registration } 8  }) 9  document.dispatchEvent(event)10}
11
12export default onServiceWorkerUpdate