[ServiceWorker] A programmatic and reliable way to unregister all ports (even it's used from others tabs) (#579)

I'm reviewing the spec and I cannot be sure if that's programmatically possible.

The requirement is simple: a way to close/unregister all ports using the same service worker (like in shared workers it can be done), usually dispatched by a `postMessage()` from one of it's consumers

Thanks in advanced

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Reply to this email directly or view it on GitHub:
https://github.com/slightlyoff/ServiceWorker/issues/579