[WhatWg Streams](https://streams.spec.whatwg.org/) are part of having a browser compatible `fetch` implementation: (see: https://github.com/nodejs/node/issues/19393). For better interoperability of browser and nodejs, it would be awesome to have `WhatWg` streams readily available in node, like we have `AbortController`, `Event` and `EventTarget`. There is a [reference implementation](https://github.com/whatwg/streams/tree/master/reference-implementation) of this available that uses the [web-platform-tests](https://github.com/web-platform-tests/wpt/tree/e5e5e7a10cbb968b31c51ad87ce8a3da62bb1b34) test-suite to make sure it works as intended. Could that make a decent first version? _I am opening this issue as a follow up on https://github.com/nodejs/node/issues/19393#issuecomment-738886508 and as a means to watch an issue to see if there is some progress or consensus on that topic. I don't think I have much time to spend on this._