How close are we to letting jquery.makeCollapsible work on Minerva? This is currently blocking some simplification logic in core (merging mediawiki.page.startup and mediawiki.page.ready). This is up for review at https://gerrit.wikimedia.org/r/#/c/mediawiki/core/+/574133/, where the combined entity will be part of modules[core][] instead of modules[content][]`.

In its current state it would effectively bypass the code in Minerva that is currently dequeuing this module (source).

There are a few challenges with getting these features working. IF that's the goal it's a little trickier. If the goal is simply to get the module loaded in the page that's a different story...

Could we enable this module but disable the code from running on Minerva by using packageFiles and a function that returns whether the feature is enabled or not? That way product work would not block your work and I think we could check a quick solution.

If we need to get the feature working it's mostly an issue of reading web priorities. I advise you make a formal request via the performance team to Olga if this needs to happen. Table sorting on mobile has some serious UX problems on mobile they we've been unable to find solutions for yet (T233340) and I don't see any quick fix.
Solving makeCollapsible is much clearer and I could do that given the time (which due to desktop refresh is currently lacking).

(Also resetting estimation as this is essentially 2 subtasks now and the collapsing is one of those (sortable tables is the other)

Why don't we use summary tag to make collapsable element?. It's HTML5 built-in feature, and supported by all browsers. And the good thing about it that this tag doesn't need Javascript to work.

In T111565#6213850, @ASammour wrote:

Why don't we use summary tag to make collapsable element?. It's HTML5 built-in feature, and supported by all browsers.

When it comes to IE/Edge, I think only Edge from this year (version 79–) supports the summary-tag, and according to the included link, it doesn't work with screen readers. So, it doesn't really seem to be a viable option.

@ASammour it's a really good idea but since infoboxes are defined in templates such an idea would have to happen inside a template. The summary tag can be used in older browsers and will render fine in IE11 - it just won't be collapsible which IMO is acceptable.

However it looks like the parser doesn't support summary and details elements. We'd need to add that first by requesting it at MediaWiki-Parser

https://caniuse.com/#search=summary

In T111565#6215648, @Jdlrobson wrote:

However it looks like the parser doesn't support summary and details elements. We'd need to add that first by requesting it at MediaWiki-Parser

→ T31118: Add HTML 5 semantic elements 'details' and 'summary' to Sanitizer whitelist

I fixed this in Bawl (for the whole page) and the same code is part of EditNoticesOnMobile (T312299) for edit notices. Just search the source for "T111565". It's really nothing spectacular.

It works and I haven't heard any complaints yet.

Change 859605 had a related patch set uploaded (by Jdlrobson; author: Bartosz Dziewoński):

[mediawiki/skins/MinervaNeue@master] Allow collapsible content in Minerva

https://gerrit.wikimedia.org/r/859605

Change 859605 abandoned by Bartosz Dziewoński:

[mediawiki/skins/MinervaNeue@master] Allow collapsible content in Minerva

Reason:

I will submit a specific patch for T323639 (collapsible mobile talk page banners), since everyone else wants a more complex solution for T111565 (collapsible content on mobile in general).

https://gerrit.wikimedia.org/r/859605