ECMAScript 2024 の仕様が承認

https://github.com/tc39/ecma262/releases/tag/es2024

ES2024 の機能についての解説記事。

Ecma International approves ECMAScript 2024: What’s new?

• Map.groupBy() , Object.groupBy()
  • https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy
• Promise.withResolvers()
  • https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Promise/withResolvers
• RegExp flag /v
• Resizable ArrayBuffers and SharedArrayBuffers
• String methods .isWellFormed(), .toWellFormed()
  • https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/String/isWellFormed
• Atomics.waitAsync() for async waits on shared memory
  • https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Atomics/waitAsync