Re: [whatwg/dom] document.createEvent() supports lots of events that most UAs do not support initializers for (#362)

I filed [Mozilla bug 1358893](https://bugzilla.mozilla.org/show_bug.cgi?id=1358893) on removing our internal usage of document.createEvent("beforeunloadevent").

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Received on Sunday, 23 April 2017 15:09:53 UTC