[slightlyoff/ServiceWorker] Reliable way to detect if a fetch is for a new page (#958)

I'm looking for a reliable way to modify only requests for entire html pages. The only thing I've found which correlates wit this is that `clientId: null` on the fetch event. Is this specced and a reliable method to use, or is there a better way to detect these sorts of fetches.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/slightlyoff/ServiceWorker/issues/958