JS: ECMAScript 2024

new methods for set object

• JS: Set.prototype.union
• JS: Set.prototype.intersection
• JS: Set.prototype.difference
• JS: Set.prototype.symmetricDifference
• JS: Set.prototype.isSubsetOf
• JS: Set.prototype.isSupersetOf
• JS: Set.prototype.isDisjointFrom

new methods for Object and Map

• JS: Object.groupBy
• JS: Map.groupBy

Promise.withResolvers

/v unicode flag for regular expressions. major change to meaning of regex.

• JS: Regex Flag v (unicodeSets)

Reference

• https://tc39.es/ecma262/2024/multipage/