Include some onFile callback in findFiles2New?

[connor4312]

Testing #226670

Back when I was using the findFiles API in js-debug, it would have been handy if there was a callback to get a file match as it's found so I could start processing them asynchonrously instead of getting them all at once in the returned promise

[alexdima]

👍 Maybe an AsyncIterator

[connor4312]

Yes, I think returning an async iterable from the method would be a nice option. Currently conversion from that to an array for extensions is a bit annoying, but Node 22 will make that nicer.

[andreamah]

I'm considering #226734, which should be sufficient for this use case. I would rather just have a general asyncIterator for all results rather than just onFile for a certain file, since having a general onResult event might lend itself to more use cases.