googlechromelabs / so-pwa Goto Github PK

The live demo currently produces the following errors in the Chrome console:

VM24 workbox-cache-expiration.dev.js:521 Uncaught TypeError: quota_mjs.registerCallback is not a function
Plugin @ VM24 workbox-cache-expiration.dev.js:521
(anonymous) @ service-worker.js:63
(anonymous) @ service-worker.js:65
(index):1 Uncaught (in promise) TypeError: Failed to register a ServiceWorker: ServiceWorker script evaluation failed

This appears to be caused by a recent commit in which purgeOnQuotaError was set to true, causing this failing code path to become active.

After reading https://developers.google.com/web/updates/2018/05/beyond-spa I better grasped so-pwa; Add the help-article to your repo?

Hi, I'm trying to implement periodic background sync on a service worker following the steps in this documentation:
https://web.dev/periodic-background-sync/
I also installed the demo, but so far I haven't seen the periodicsync event fired not even once.

It does work though if I click "sync manually" or if I trigger the tag from devtools. But it doesn't work periodically.
I've read that browsers can decide when to sync, but I'm not able to reproduce the behaviour in any way.
Is there a bug or am I missing something?

A couple of things that could be useful: I checked the status and it's "granted". I checked the active tags and I can see the one I registered.

There are also two questions on StackOverflow (unanswered) about this.
https://stackoverflow.com/questions/66649131/periodic-background-sync-not-working-on-pwa-official-api-demo-broken
https://stackoverflow.com/questions/65096834/periodic-sync-not-fired-in-service-worker

I guess I can't simply call a setInterval inside a service worker because it's going to be shut after a while. For the same reason, I guess that a WebSocket wouldn't work either.