JS: ECMAScript 2024

• 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

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

• Promise.withResolvers
• /v unicode flag for regular expressions.