ReadableAsyncIterator error not handled

[fabiancook]

• Version: https://github.com/nodejs/node, master (No version, straight from source)
• Platform: -
• Subsystem: -

It appears that this[kError] could never be anything other than null, as in onError, iter.error = is used rather than iter[kError] = , this means in next, this[kError] will always be null, and the error will always be sitting there.

It looks like that if the error occurs while waiting for the next read it will invoke this[kLastReject], at any other point it will go unnoticed.

I can't see anywhere iter.error is used, which is why I am making this issue

If I'm misdirected in what I am seeing, please do correct me 😀

Relevant link: https://github.com/nodejs/node/blob/master/lib/internal/streams/async_iterator.js#L61

[ryzokuken]

/cc @nodejs/streams @mcollina

[mcollina]

There is already a fix for this: #20329.
It will likely go out on one of the next releases.

[fabiancook]

Closed by PR #20329