On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Bun version 1.0.0 on 2023-09-08
In Chrome version 43 on 2015-05-19
In Chrome Android version 43 on 2015-05-27
In Deno version 1.7 on 2021-01-19 Note: ReadableStreamDefaultReader is not exposed on the global scope.
In Edge version 79 on 2020-01-15
In Firefox version 65 on 2019-01-29
In Firefox for Android version 65 on 2019-01-29
Not in Internet Explorer
In Node.js version 18.0.0 on 2022-04-19 Note: Available as a part of the stream/web module.
In Quest Browser version 5.0 on undefined
In Opera version 30 on 2015-06-09
In Opera Android version 30 on 2015-06-10
In Safari version 10 on 2016-09-20
In Safari on iOS version 10 on 2016-09-13
In Samsung Internet version 4.0 on 2016-03-11
In WebView Android version 43 on 2015-05-27
In WebView on iOS version 10 on 2016-09-13