Riverpod StreamProvider, is there a way to read the previous value, within the StreamProvider itself?

Question

I am using Riverpod StreamProvider to create a stream.

Within the StreamProvider, is there any way to read the previous value supplied by this same StreamProvider?

Answer 1

No. You'll need to use a Stream filter like from the package:async pub package, or create a custom function that uses await for (e in aStream) to process elements as they arrive, caching the previous element in a local variable.

Edit: on second thought, you could return a stream generated by an async * function as the stream in your StreamProvider, which does the same thing as I just described with some input stream.