On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Bun version 1.0.23 on 2024-01-16
In Chrome version 127 on 2024-07-23
In Chrome Android version 127 on 2024-07-23
In Deno version 1.37 on 2023-09-20
In Edge version 127 on 2024-07-25
In Firefox version 141 on 2025-07-22
In Firefox for Android version 141 on 2025-07-22
Not in Internet Explorer
In Node.js version 24.0.0 on 2025-05-06 Note: Only available for fs and stream resources. Only available for fs and stream resources.
Not in Quest Browser
In Opera version 113 on 2024-08-22
In Opera Android version 84 on 2024-08-26
Not in Safari
Not in Safari on iOS
In Samsung Internet version 28.0 on 2025-04-02
In WebView Android version 127 on 2024-07-23
Not in WebView on iOS