Hoel IRIS 81c2a94310 fix(service-worker): avoid uncaught rejection warning when registration fails (#30876)
Service worker API `navigator.serviceWorker.register` can fail in multiple ways.
For example, in Chrome, with an unstable network connection you can have the
following error: `An unknown error occurred when fetching the script.`

In the current state, it creates an `Uncaught (in promise) TypeError:` style of
error, which cannot be caught by the user on his own.

I think it's better to log the error over raising an error that cannot be
caught.

PR Close #30876
2019-06-07 08:46:25 -07:00
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