MediaRecorderErrorEvent is a bad idea; use ErrorEvent instead

[domenic]

ErrorEvent already exists and serves this purpose fine. We shouldn't propagate multiple such types on the web platform.

[alvestrand]

MDN claims that Firefox and Safari implement MediaRecorderErrorEvent (https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorderErrorEvent#methods)

WPT.FYI seems to indicate that only Firefox does: https://wpt.fyi/results/mediacapture-record/idlharness.window.html?label=experimental&label=master&aligned

[domenic]

Oh, thanks, I thought it was nobody else since the blink-dev Intent to Prototype indicated no signals from other browsers...

I think this would likely be a backward-compatible change for Firefox since event.error would still exist and return the same value. The only thing that would break is if someone is doing new MediaRecorderErrorEvent(...) which seems pretty unlikely.

[dontcallmedom]

looking on github and on searchcode, the only occurrences of new MediaRecorderErrorEvent() seems to be in WPT.

I've filed #212 for a spec change, and drafted web-platform-tests/wpt#32380 for the associated WPT changes.

[foolip]

I've done a search for "MediaRecorderErrorEvent." (trailing dot) in httparchive and there were only 4 matches. All 4 of those look like generated stuff from IDL or some other API listing. https://documents.devdocs.io/dom/index.json?1634928100 is one example, which I think is a mapping of features to MDN pages.