How to convert a stream to another type without using map?

Question

I've this code:

Stream<int> get fooStream async* {
  barStream.listen((_) async* { 
    int baz = await getBaz();
    yield baz; // Does not work
  });  
}

How can I return Stream<int> from another stream?

---

Note: If I use map to transform the stream, then I'll have to return Stream<Future<int>>, but I want to return Stream<int>. I also don't feel like using rxdart pacakge for this tiny thing.

Answer 1

1. Use asyncMap.

   barStream.asyncMap((e) => getBaz())
   

2. Use await for

   Stream<int> get fooStream async* {
    await for (final item in barStream) {
      yield await getBaz();
    }
   }