TC39 Delegates on 2021-10-13

17:22	<bakkot>	devsnek: for your slides for extending `null`, it would be good to have some some slides with the various edge cases (especially "class which extends a literal `null` and has not had its prototype changed", "class which initially extended some other value but has had its prototype changed to `null`", and "class which initially extended `null` but has had its prototype changed to a non-`null` value") everyone agrees `extends null` should work, so much of the meat of the discussion is around these edge cases
17:22	<bakkot>	I can write something up if you'd find it helpful
17:23	<bakkot>	also, reminder to the channel that the deadline for advancement eligibility is in two days, and the agenda is currently pretty light
17:31	<jschoi>	If not much else gets added to the agenda, then I will expand my two proposal updates’ timeboxes from ten minutes to thirty minutes each.
18:01	<bakkot>	shu: given that the agenda is kind of light, Michael Ficarra and I were thinking it might be a good time for the subclassing discussion
18:16	<bakkot>	jschoi: the spec at https://jschoi.org/21/es-array-async-from/ appears to be ahead of the spec in the proposal
18:16	<bakkot>	I was gonna submit a PR but it's tricky when they're out of sync
18:36	<shu>	bakkot: what's the scope you had in mind?
18:48	<Michael Ficarra>	If not much else gets added to the agenda, then I will expand my two proposal updates’ timeboxes from ten minutes to thirty minutes each. any time box less than 30 minutes is pretty ambitious
18:50	<Michael Ficarra>	bakkot: what's the scope you had in mind? tradeoffs of the "minimal core" philosophy where supplementary methods delegate to core methods so that subclasses only need to override the core
18:51	<Michael Ficarra>	recall the question from the Set methods proposal: do helpers like union/intersection/difference touch the set contents themselves or delegate to the add/remove methods
19:16	<jschoi>	I was gonna submit a PR but it's tricky when they're out of sync They should be in sync; I’m surprised that they were not. I just updated the spec page to match the repository’s build. I’ll set up an automatic build on tc39.es sometime.
19:17	<jschoi>	any time box less than 30 minutes is pretty ambitious Haha, yeah—I was just going to speed through a few update slides then say, “Please file any questions in a new GitHub issue; thank you!”
19:53	<bakkot>	They should be in sync; I’m surprised that they were not. I just updated the spec page to match the repository’s build. I’ll set up an automatic build on tc39.es sometime. unless there's a caching issue or something they appear to still not be in sync - the rendered spec has the TA method, the source in the spec.html file in the repo (which has not been updated in 13 days) does not
19:55	<jschoi>	I’ll look into it, but either way I haven’t gotten to updating the TypedArray version yet to fulfill #9. I’ll work on deploying to GitHub Pages tonight so we can definitely have an up-to-date spec page.
20:10	<devsnek>	bakkot: updated slides and also rebased the spec text
20:13	<devsnek>	also added a note about how class fields don't currently work
23:30	<shu>	reminder that nobody has signed up for the next incubator call: https://github.com/tc39/Reflector/issues/399
23:30	<shu>	i will cancel it if nobody else signs up by this friday, Oct 15