Re: [ServiceWorker] should update() during top level script evaluation be ignored? (#800)

> You will still end up with continuous updates running once every 1 second

I'm not following this.

Assuming the browser has an active worker that contains only `self.registration.update();`

1. SW spins up for whatever reason
1. Update triggered
1. SW fetched, and it's byte different! `self.registration.update(); // v2`
1. Installing worker spun up
1. Update triggered
1. SW fetched, byte-identical, ignored
1. Installing worker activates

Sure, you're going to get a fetch for your SW pretty frequently, but this isn't much worse than putting `fetch('/whatever')` at the top of your SW.

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