The release of Firefox 127 introduces new JavaScript Set methods, now supported across major browser engines. Polyfills are no longer needed to make them work everywhere. These additions provide ...

This tutorial provides a comprehensive guide to JavaScript Map and Set, explaining their differences, use cases, and how to use them.

The ECMAScript 2025 specification, now final, standardizes new JavaScript capabilities including JSON modules, regex capabilities, Set methods, and sync iterator helper methods.

Since the beta, TypeScript 5.5 added support for the new Set methods proposed for JavaScript. Some of these methods, such as union, intersection, and difference, take another Set and return a new ...