# ECMAScript 2021 스펙 승인

> Clean Markdown view of GeekNews topic #4519. Use the original source for factual precision when an external source URL is present.

## Metadata

- GeekNews HTML: [https://news.hada.io/topic?id=4519](https://news.hada.io/topic?id=4519)
- GeekNews Markdown: [https://news.hada.io/topic/4519.md](https://news.hada.io/topic/4519.md)
- Type: news
- Author: [xguru](https://news.hada.io/@xguru)
- Published: 2021-06-29T09:26:14+09:00
- Updated: 2021-06-29T09:26:14+09:00
- Original source: [h3manth.com](https://h3manth.com/ES2021/)
- Points: 6
- Comments: 1

## Topic Body

- 논리 할당 연산자 : &&= || ??=

- 숫자 Separator 지원 : 1_000

- Promise.any & AggregateError 추가

- String.prototype.replaceAll

- WeakRefs 와 FinalizationRegistry 객체

## Comments



### Comment 5518

- Author: xguru
- Created: 2021-06-29T09:26:19+09:00
- Points: 1

아직 공식 Repo엔 기록은 안되어있네요.

https://tc39.es/ecma262/2021/

https://twitter.com/robpalmer2/status/1407335682406760452