Modules such as mediawiki.feedback and mediawiki.util have documentation both on this page and on jsDuck. Should we remove the one here, link to the API docs, and copy over stuff that is missing there (or these three things in some other order)?
Topic on Talk:ResourceLoader/Core modules
I was about to post the same thing, about mediawiki.api.* submodules. Documenting the individual methods (mw.Api#isCategory, etc.) here is cluttering, cumbersome, unmaintained and outdated. Whereas we could link to specific API pages (category, etc.) which is simple to do, more convenient to read on jsDuck, and always up-to-date. Ping Krinkle (by the way, I've done a handful of edits on this page today).
Yeah, any outdated or duplicated documentation here is fine to remove. I've been doing that for years, but it's a slow process.
If you find any method/class documentation or usage examples that missing from doc.wikimedia.org, they should be added there before removing here.
If you find any migration instructions on this page that are missing from RL/MGU, they should be added there before removing here.