GoKawiilJavaScript's 2026 landscape: ECMAScript 2025 adds iterator helpers and Set methods
A developer roundup describes the state of JavaScript heading into 2026, covering the ECMAScript 2025 spec finalized in June 2025 alongside the runtimes, frameworks and tooling surrounding the language. Key language additions include native iterator helper methods such as map, filter, take and drop with lazy evaluation, plus new Set methods for comparing collections like union, intersection and difference.