feat(service-worker): Support ignoring specific URLs (e.g. for AJAX progress listener, video streaming, range requests, Firebase uploads) #21191

I'm submitting a...

[x] Feature request

Current behavior

ServiceWorker breaks AJAX uploads progress reporting.

Expected behavior

AJAX upload progress listener should work.

What is the motivation / use case for changing the behavior?

Progress is needed when handling uploads.
There is an open issue here and it is on this w3c roadmap
Until then, as far as I could read, it would be possible to make this work by checking the event.request.url at the very top of the SW script and simply return if it matches certain urls that would be specified in ngsw-config.json

Environment

Angular version: 5.1.2