Darien Maillet Valentine

@bakkot That is also what I’d like to see re: proxies, both to close the Proxy-exotic-object-status observability hole it creates and because there are already user-code-invoking paths (including getter invocation)...

This is the [explicitly-set attr-elements](https://html.spec.whatwg.org/#explicitly-set-attr-elements) case (for others looking for where it’s defined). When explicitly set, the list takes precedence when calculating the [attr-associated elements](https://html.spec.whatwg.org/#attr-associated-elements). These concepts seem to be...

I’ve needed to compose timeout-related signals and other signals many times. In some cases this did mean just one timeout + its creator had controller access, but very often the...

The note preceding the [mixin where `getElementById` is declared](https://dom.spec.whatwg.org/#interface-nonelementparentnode) explains this: > Web compatibility prevents the [getElementById()](https://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid) method from being exposed on [elements](https://dom.spec.whatwg.org/#concept-element) (and therefore on [ParentNode](https://dom.spec.whatwg.org/#parentnode)).

@michaelficarra and even just accessors, or ordinary objects inheriting from proxies or objects with `then` accessors, etc. For that matter, “thenable module namespace exotic objects” or even “thenable sloppy mode...

> It seems [@michaelficarra is] suggesting there's an issue with this definition because of the dynamic aspect of the JS language. I don't see any issue with that. JS is...

@raulsebastianmihaila I can assure you there’s no trolling. I can offer no assurance about its quality, of course, and am sorry you found it lacking.

If any folks have ended up tackling ghosts and/or windmills because my attempt at describing an existing formalization problem (only indirectly related to this PR) was unsuccessful, apologies. I think...

I believe there was at least one usage where the `x` of `Type(x)` wasn’t guaranteed to be a language value. I’m using past tense because I can’t find it now...

@jmdyck thanks for confirming usage with non-language-values does currently exist! When I didn’t find any earlier myself, I started to wonder if I'd only imagined seeing them before. > I...