Remove implements statement support

[marcoscaceres]

I think "implements" has been dropped from the IDL spec... probably when "mixin" happened...

Affected specs: whatwg/webidl#472

[tobie]

Yes. I'm overdue filing bugs for this. I'll look into it today. Sorry. :-/

[marcoscaceres]

Np at all. If it’s a “yes”, than I’m happy to pull support. But I guess we should add in mixin support at the same time?

[tobie]

Can we sync up on this issue?

[tobie]

Sorry, fat fingered this.

[TimothyGu]

Would be nice to have a period of time when both implements statements and mixins are supported to ease transition.

[marcoscaceres]

Would be nice to have a period of time when both implements statements and mixins are supported to ease transition.

The following tests/specs things would break:

• cssom-view ([cssom] [cssom-view] Use mixins in IDL definitions csswg-drafts#1928)
• cssom ([cssom] [cssom-view] Use mixins in IDL definitions csswg-drafts#1928)
• dedicated-workers
• dom (Use mixins in IDL definitions whatwg/dom#529)
• html (Use mixins in IDL definitions whatwg/html#3187)
• mediacapture-main

So we should get those migrated first.

[marcoscaceres]

(the list above is not complete... it's what I got from git grep --name-only implements ./interfaces on the WPT repo)

[marcoscaceres]

@TimothyGu, could you help us notify those spec owners that we plan on making this breaking change? Probably cc @tobie, as editors might need help with reviews when adding the new syntax... otherwise, we can send PRs for the affected specs, as it's only a syntax change to the IDL in most cases, and should not affect any prose.

[marcoscaceres]

I've moved the list of affected specs to the top of this bug... we can cross them off as they get merged.

[TimothyGu]

@marcoscaceres Filed some bugs.

[tobie]

So just FYI, I've built a system to automate the bug filing and tracking for WebIDL changes in the future, hence the delay in doing this here. I know this delays things a bit, and I'm sorry about it.

[tobie]

Problem is we're now going to have plenty of dups. So if you could hold off adding more issues, that would really help.

[TimothyGu]

@tobie Sorry about that. I'll stop doing it.

[tobie]

Yeah, I should have finished this way earlier. :-/

[tobie]

Thanks!

[marcoscaceres]

@tobie that's awesome to hear about the automated bug filing. @TimothyGu apologies for asking you to do needless work :(

[tobie]

OK, finally shipped this. You can track all the things from here: whatwg/webidl#472.