#tc39 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #tc39, aggregated by home.social.
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🤣 Ah, the elusive quest to cancel a #JavaScript promise—like trying to "unsubscribe" from those pesky emails, except sometimes a mysterious force lets you do it. 🤦♂️ TC39's valiant crusade for #cancellation ended in a Shakespearean tragedy of "to cancel, or not to cancel." Spoiler: you're still stuck with dangling promises and digital clutter. 📧🔄
https://www.inngest.com/blog/hanging-promises-for-control-flow #Promise #TC39 #TechHumor #DigitalClutter #ProgrammerLife #HackerNews #ngated -
I feel like the currently-proposed TC39 Observables lacking some value that can be supplied upon "completion" is a mistake. #RxJS #Observables #TC39 #ECMA262
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I feel like the currently-proposed TC39 Observables lacking some value that can be supplied upon "completion" is a mistake.
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I feel like the currently-proposed TC39 Observables lacking some value that can be supplied upon "completion" is a mistake.
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I feel like the currently-proposed TC39 Observables lacking some value that can be supplied upon "completion" is a mistake.
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I feel like the currently-proposed TC39 Observables lacking some value that can be supplied upon "completion" is a mistake.
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I feel like the currently-proposed TC39 Observables lacking some value that can be supplied upon "completion" is a mistake.
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Am I the only one to think that it's good that cancellable promises never made it into any specs whatsoever?
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Getting information about the status of #TC39 proposals is a horrible process: As a developer, I want to know how far along the "Pattern matching" feature is.
So I google "TC39 Pattern Matching". First result is this GitHub repo: https://github.com/tc39/proposal-pattern-matching. It says in the readme "Status: Stage 1" (I assume that's not true anymore). So I check the official "proposals" repo (https://github.com/tc39/proposals), and search for "pattern": Nothing, no results at all. I guess they only track Stage 2.
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Every so often I get an email notification from some starred bug report about TC39 decorators, and I peek at what's going on, and it seems like the current situation is that it's fully standardized but all 3 browsers went "This is complicated and we don't feel like implementing it" 😞
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Promise.try: единый вход для sync/async и единая обработка ошибок
Привет, Хабр! Не раз ловил себя на том, как в код-ревью всплывает одна и та же проблема: часть наших функций синхронные, часть асинхронные, а часть ведут себя как шрёдингеровские коты и делают вид, что синхронны, пока не дотронешься. В итоге в одном месте у нас try/catch, в другом .catch , где-то внезапно падает исключение, а в соседнем модуле молча утекает Promise. С появлением нативного Promise.try стало проще навести порядок и избавиться от разнобоя. Фича прошла процесс стандартизации в TC39 и включена в спецификацию ECMAScript 2026, при этом уже с января доступна в актуальных движках. Можно перестать спорить про обёртку из Promise.resolve().then и получить единый вход для sync/async с нормальной обработкой ошибок.
https://habr.com/ru/companies/otus/articles/940298/
#js #Promisetry #JavaScript #ECMAScript_2026 #TC39 #синхронный_код #асинхронный_код
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[Перевод] Будущее JavaScript: что нас ждет
Недавно прошла 108-я встреча TC39, на которой было продвинуто 9 предложений на разные стадии стандартизации — от сырых идей (Стадия 0) до полностью утвержденных возможностей (Стадия 4). Ниже краткий обзор этих предложений и того, что они могут привнести в JavaScript.
https://habr.com/ru/companies/timeweb/articles/927768/
#javascript #js #tc39 #ecmascript #future #proposal #будущее #предложение #standart #timeweb_статьи
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Two of the nicest new #JavaScript features of recent times:
Iterator Helpers (`.values()`) and `Array.fromAsync()`
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fromAsync
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#Development #Overviews
When can I use the Temporal API? · Why JavaScript’s Date API replacement took so long https://ilo.im/165c7r_____
#TC39 #EcmaScript #JavaScript #TemporalAPI #DateAPI #API #Browser #WebDev #Frontend -
Ooh Math.clamp would be cool, one less helper I need to keep rewritting https://github.com/tc39/proposal-math-clamp
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#Development #Proposals
TC39 advances 9 JavaScript proposals · Three features are ready to join ECMAScript https://ilo.im/164is3_____
#TC39 #EcmaScript #JavaScript #WebDev #Frontend #Backend -
I'm gonna settle it once and for all:
the tc39 should adopt the F# style for pipeline operator.
No questions asked.
#FunctionalProgramming #JavaScript #TC39 #ECMAScript #ECMA262 #FP #PipelineOperator
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During tonight's AmsterdamJS #Meetup Special Edition with #TC39 Members (1800 CET), I will share the history of the #JavaScript Decorators proposal, which is now in Stage 3 of Ecma TC39's standardization process www.meetup.com/amsterdamjs/...
AmsterdamJS Special Edition: A... -
#Mozilla Standards Positions. This page tracks Mozilla's positions on open Web and Web-related specifications submitted to standards bodies like the #IETF, #W3C, #WHATWG, and #Ecma #TC39. Please remember, this isn't a commitment to implement or participate; it's just what we think right now. See dev-platform to find out what we're implementing. https://mozilla.github.io/standards-positions/
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#Development #Proposals
TC39 advances a few JavaScript proposals · Three features are ready to join ECMAScript https://ilo.im/162h89_____
#TC39 #EcmaScript #JavaScript #WebDev #Frontend #Backend -
Highly recommended article by @ryancarniato on #JavaScript Signals and scheduling of async funcs.
I had my own share of problems (in Lit) with the #TC39-#Signal proposal, but failed to blog about it so far. Glad others recognize it could be too early to standardize…
Scheduling Derivations in #Reactivity:
https://dev.to/this-is-learning/scheduling-derivations-in-reactivity-4687
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Anybody on #TC39 want to champion an ECMAScript proposal? Before I write a whole explainer document I’d like to make sure it isn’t wasted effort.
In short: Symbol.call, a well-known symbol, which can be used as a method name to make an object callable. Prior art: #Ruby’s call(), E’s run (), C++’s operator(). Allows your class’s instance to act as a Functor Object, and eases use of Method Object pattern. Gives us a way to make callables have their own “this.”
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Twice a year, due to a very old system, many assumptions, user expectations, and a bright mind that decided to set a database in Europe/Amsterdam TZ, we have to deal with at least a bug regarding time issues. I cannot wait for Temporal to be fully implemented in all the platforms.
https://developer.mozilla.org/en-US/blog/javascript-temporal-is-coming/
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Just noticed this #js behaviour found it interesting/surprising
```javascript
let o = {}
let i = 0;
o?.f?.(i++)
```The value of `i` is `0` after this expression. I would have thought that the orders of evaluation would still lead to `i++` occurring even if the method call is short circuited. But `i++` never evaluates.
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Updates from the TC39 meeting in December 2024
@gnumanth
https://dev.to/hemanth/updates-from-the-105th-tc39-meeting-3gkh -
#Development #Outlooks
TC39 advances 10+ ECMAScript proposals · Prominent JavaScript features to keep an eye on https://ilo.im/160e65#Proposals #TC39 #ECMAScript #JavaScript #Browser #WebDev #Frontend
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Is it wrong if I'm kind of enjoying the drama about #ljharb?
Burn tc39 down! Make the web anew!
The only standard is death comes to everything!#webDev #javaScript #tc39 #nodejs #esm #esmodules #commonjs #cjs #modules
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I also moved over my last year’s post on #Reactivity for #WebGPU https://mighdoll.dev/blog/reactive-webgpu/.
The reactive #signals effort seems to be coming together nicely in #TC39. I’m hoping to revisit the #WebGPU integration to use the current #signals polyfill later this summer.
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#Development #Proposals
Coming soon to JavaScript near you? · Some striking TC39 stage 2 proposals currently in the works https://ilo.im/15ym58_____
#JavaScript #EcmaScript #TC39 #Proposal #Specification #WebStandard #WebDev #Frontend #Backend
