Re: [whatwg/streams] Why does the `read` method of `ReadableStreamBYOBReader` class, need to _transfer_ the buffer it is provided? (Issue #1348)

MattiasBuelens left a comment (whatwg/streams#1348)

> I do have a case for it, but I can't demonstrate any performance wins unless I can actually execute the case, which I cannot :)

There are several pure JavaScript implementations of the Streams standard, which you could use to build an experimental implementation:
* [The reference implementation in this repository](https://github.com/whatwg/streams/tree/main/reference-implementation)
* A polyfill, such as [web-streams-polyfill](https://github.com/MattiasBuelens/web-streams-polyfill) or [@stardazed/streams](https://github.com/stardazed/sd-streams)
* A server runtime, such as [Node.js](https://github.com/nodejs/node/blob/main/lib/internal/webstreams/readablestream.js) or [Deno](https://github.com/denoland/deno/blob/main/ext/web/06_streams.js)

That said, this is not a requirement to propose a change in the standard. Have a look at our [Participation Guide](https://participate.whatwg.org/) and [Working Mode](https://whatwg.org/working-mode). 😉 

> I am unsure how you want me to present my use case -- as a README/proposal postulating/hypothesising something? I can do that.

Yes, that would be a good start. We call this an "explainer", and you can find several explainers for previous features in this repository, such as for [readable byte streams](https://github.com/whatwg/streams/blob/main/byte-streams-explainer.md) or [transferable streams](https://github.com/whatwg/streams/blob/main/transferable-streams-explainer.md).

If you want to champion this feature yourself, then feel free to open a new issue and put your explainer in the issue description. Describe the problem and the proposed solution, and also list any alternative solutions you've considered. From there, we can iterate on the proposal and (if other contributors agree with your proposal) start working on updating the standard.

If you'd rather not champion it yourself, then someone else will have to pick this up.

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