How to fork a readable stream

[kunalgoyal9]

I need something like this

const rStream = <get a readable stream>
const fStream = <get a writable stream to a file handle>
rStream.on.("data", d => {
<add to sha logic>
<copy to fStream>
})

rStream is a Deno.Reader object. Another way I can think of is to copy this rStream. But making a clone with structuredClone doesn't work as well

[zachauten]

Deno.Reader isn't a ReadableStream, but you can convert it with readableStreamFromReader from the std lib. Then you can use ReadableStream.tee to read from it twice.