TC39 Delegates
2021-10-06
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14:32
<jschoi>
Several Stage 0 proposals have been transferred to the tc39 GitHub organization. Is there a particular policy about this? https://github.com/tc39/proposals#onboarding-existing-proposals doesn’t talk about Stage 0.
14:41
<ryzokuken>
are internal slots case sensitive?
14:46
<ryzokuken>
https://tc39.es/ecma262/#sec-object-internal-methods-and-internal-slots doesn't specify that
14:57
<shu>
yeah, treat them as case sensitive
14:58
<shu>
i'd be against every introducing slot names that differ only in casing
14:58
<shu>
but even so just treat them as case sensitive
15:00
<ryzokuken>
I mean more about access. Can I access [[Foo]] using [[foo]]?
15:11
<Ashley Claymore>
semi-related. is the [[Description]] that a Symbol "holds" also an 'internal slot'? The spec seems to say that slots are only on objects, so would it be technically incorrect to say that symbols have an internal slot?
16:02
<shu>
ryzokuken: no, use [[Foo]]
16:42
<shu>
Ashley Claymore: not technically, but conceptually yes
17:01
<Ashley Claymore>
thanks shu 🙂
17:58
<shu>
PSA: nobody has signed up for the next incubator call yet. the topic is Proxy performance https://github.com/tc39/Reflector/issues/399
21:15
<ljharb>
Several Stage 0 proposals have been transferred to the tc39 GitHub organization. Is there a particular policy about this? https://github.com/tc39/proposals#onboarding-existing-proposals doesn’t talk about Stage 0.
the policy is that stage 1+ proposals must be transferred; stage 0 proposals can be, but for scalability, we should probably only transfer the ones that have been discussed in a plenary
22:24
<rbuckton>

Can the Contains spec op be used with a sequence of terminals, or would I need to contain the terminals in a nonterminal to use Contains? For example, would the following be valid spec text?:

If _node_ Contains `using const`, ...
22:31
<bakkot>
rbuckton: as it is currently written, it cannot. it walks over the children of a parse node one at a time checking if each is an instance of the argument to Contains, which would not work when the thing you are looking for is spread out across multiple children.