Modern async iteration in JavaScript with Array.fromAsync()

July 16, 2025

laptop on a desk on a deck with late afternoon or early morning light.

As front-end engineers, we frequently deal with asynchronous data, such as API responses, streams, lazy-loaded content, and more. JavaScript has long provided tools for managing async logic, but working with async iterables has often required verbose or manual handling.

Enter Array.fromAsync(), a modern addition to JavaScript that simplifies the process of converting async data sources into arrays. It’s intuitive, powerful, and designed to work seamlessly with async/await.

Source: Modern async iteration in JavaScript with Array.fromAsync() – Matt Smith

A relatively new feature of JavaScript  that simplifies the process of converting async data sources into arrays.