AsyncNotifier: how to watch only for a property change, ignore the loading/error states

[nicolasbraun]

Hello

I have a StreamProvider that is a Stream of a Firebase snapshot of a document Event.

@riverpod
Stream<Mood?> eventStream(Ref ref, EventID evenId) {
  final eventsRepository = ref.watch(eventsRepositoryProvider);
  return eventsRepository.watchEvent(id: eventId);
}

This stream is watched on the Event screen where I need to handle loading/error states wich AsyncValue.whenwhich is fine.
I also need to reed this Stream in one other controller (for the event Chat) because I need the events settings here

@riverpod
class ChatController extends _$ChatController {


  @override
  Future<void> build({required EventID eventdId}) async {

    state = AsyncValue.loading();


    final members = ref.watch(
        eventStreamProvider(eventId).select((value) => value.value?.settings));
...

Problem is when the event is edited it transitions for a bit between AsyncLoading and AsyncData causing my ChatController to rebuild.

TL;DR how can I in a select for an AsyncProvider ignore loading/error states (and maybe return the previous value)

I was thinking maybe I can store the previous value and do something like

    final members = ref.watch(
        eventStreamProvider(moodId).select((value) => value.value != null ? value.value.settings : _storedSettings));

Thank you