TC39 Delegates
2023-11-14
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01:00
<rkirsling>
interesting
01:00
<rkirsling>
I assumed rent-a-car would be unavoidable for SD but if multiple people are opposed it'd be sweet to find another solution
01:00
<rkirsling>
I too don't enjoy driving
19:05
<snek>
can only member companies host
19:06
<Chris de Almeida>
can only member companies host
no
19:09
<Chris de Almeida>
https://github.com/tc39/how-we-work/blob/main/host.md
19:11
<snek>
neat
21:00
<bakkot>
man, "give me all of the own enumerable string + symbol keys of this object" is a surprisingly annoying task for something I want to do pretty often
21:01
<bakkot>
let desc = Object.getOwnPropertyDescriptors(obj);
return [...Object.getOwnPropertyNames(desc), ...Object.getOwnPropertySymbols(desc)]
  .filter(x => desc[x].enumerable);

is the best I've got

21:02
<bakkot>
do you figure we could add get away with making Object.keys/entries take a options bag argument like { symbols: true }
21:05
<bakkot>
alternative I guess is a Object.symbolKeys / Object.symbolEntries so you could at least do [...Object.keys(x), ...Object.symbolKeys(x)]
21:10
<ljharb>
Reflect.ownKeys + a filter doesn't do it?
21:10
<ljharb>
(also why would you use gOPN if you want only enumerable? that's what keys already gives you)
21:22
<littledan>
wasn't that sort of the point, that symbols are supposed to be pseudo-private so it should be annoying to reflect over them?
21:22
<Michael Ficarra>
ljharb: keys is strings only
21:23
<littledan>
or was that just a compat decision?
21:23
<Michael Ficarra>
let keys = Object.entries(Object.getOwnPropertyDescriptors(input))
    .filter(([, desc]) => desc.enumerable)
    .map(([k]) => k);
22:16
<bakkot>
ah, Reflect.ownKeys is an improvement on using getOwnPropertyNames + getOwnPropertySymbols, sure
22:16
<bakkot>
Object.keys doesn't include symbols, is the reason
22:16
<ljharb>
ljharb: keys is strings only
Object.keys is Object.getOwnPropertyNames, but only enumerables
22:17
<ljharb>
Object.keys doesn't include symbols, is the reason
right but you're using getOwnPropertySymbols for the symbols. gOPN's only use is if you want non-enumerable strings, which you don't
22:17
<bakkot>
sure, yes, that does end up being equivalent here
23:16
<Richard Gibson>
https://github.com/endojs/endo/blob/master/packages/pass-style/doc/copyRecord-guarantees.md#how-do-i-enumerate-thee-let-me-list-the-ways