Dev Tools · 1h ago
ECMAScript 2026 Adds Map Upsert, More JS Features
ECMAScript 2026 introduces Map.prototype.getOrInsert() for simpler upsert operations, among other new JavaScript features. The TC39 committee continues its iterative release cycle, shipping yearly updates. Developers get immediate access to these features in modern browsers and runtimes.
Meridian48 take
While incremental JS updates are welcome, the hype around AI often overshadows these practical improvements that directly impact developer productivity.
javascriptecmascript-2026