Atomics.waitAsync
The Atomics.waitAsync() static method waits for a value in a shared memory location, providing a promise when the expected value is not yet in memory. The waitAsync() method is a non-blocking alternative to Atomics.wait().
Status
Baseline Newly Available (since 2025-11-11)
This feature is expected to reach Baseline Widely Available status on: 2028-05-11
MDN documentation
Specifications
- ECMAScript® 2026 Language Specification (#sec-atomics.waitasync), from TC39 (Ecma International).
Browser support
- Chrome 90 Released on 2021-04-13
- Chrome Android 90 Released on 2021-04-13
- Edge 90 Released on 2021-04-15
- Firefox 145 Released on 2025-11-11
- Firefox for Android 145 Released on 2025-11-11
- Safari 16.4 Released on 2023-03-27
- Safari on iOS 16.4 Released on 2023-03-27
Usage (according to Chrome Platform Status)
~0.009% of page loads. More data at chromestatus.com.
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