June 2024
ECMAScript 2024 standardized
Ecma adopted ECMAScriptThe standardized specification for JavaScript — ES3, ES6, and later editions define the language. 2024 in June 2024 — adding `ArrayBuffer` transfer, `Object.groupBy`, `Promise.withResolvers`, and `String.prototype.isWellFormed`.
What it was for
ES2024 brought grouped collections and better async primitives to everyday JavaScript. `Promise.withResolvers` simplified hand-rolled promise patterns; grouping helpers reduced lodash usage for data aggregation in browsers and NodeNode.js — JavaScript on the server via an event-driven runtime built on V8..
Why it's here
ES2024 added grouping and promise utilities developers reach for constantly.
Why it mattered
Native grouping reduced dependency on utility libraries for common data tasks.
What it solved
Grouping arrays and objects required manual loops or external helpers.
Media
- ImageECMAScript
Plest, Public domain, via Wikimedia Commons
Related
- ECMAScript 2022 standardizedJune 2022
- ECMAScript 2025 standardizedJune 2025