ECMAScript 2023

ECMAScript 2023 has been released.

• https://github.com/tc39/ecma262/releases/tag/es2023
• https://262.ecma-international.org/14.0/

The following proposals have reached stage 4 and are part of ECMAScript 2023:

• Array find from last
  • [MDN] Array#findLast()
  • [MDN] Array#findLastIndex()
• Hashbang Grammar
  • [MDN] Lexical grammar
• Symbols as WeakMap keys
  • [MDN] WeakMap
• Change Array by Copy
  • [MDN] Array#toReversed()
  • [MDN] Array#toSorted()
  • [MDN] Array#toSpliced()
  • [MDN] Array#with()
  • [MDN] TypedArray#toReversed()
  • [MDN] TypedArray#toSorted()
  • [MDN] TypedArray#with()

Most of these new features have already landed in all the important browser engines.