[Question] SignInFormBloc.mapEventToState() issue

[sQuark23]

Hi, I'm facing with next error:

error: The type 'Stream' implied by the 'yield' expression must be assignable to Stream<Null>

and it's appearing for every state.copyWith() call

Any thoughts on it?
I'm on Flutter v1.13.6 and Dart v2.8.0

[Teclys23]

Actually I have the same error, but if I run it anyway, the app is working pretty good.

[erkansahin]

The problem is about linting. You need to add the following code to the analysis.yaml file:

  strong-mode:
    implicit-casts: true

After the addition, the file should look like the following:

analyzer:
  strong-mode:
    implicit-casts: true
  errors:
    missing_required_param: error
    missing_return: error
    must_be_immutable: error

If you want to read more from the resource go to:
analysis options

[abiliodasilva]

Greeting @sQuark23.
I won't call this an answer by itself but if you update your Flutter version to the last stable version (1.17.0) the error don't show anymore.

I don't know the reason, but when I was using Flutter 1.12.13 the same error appeared, after update, everything got solved. Could it be a false positive of Dart Analyzer?

[sQuark23]

Guys, thanks for your answers! You saved me a lot of time 🙏
@erkansahin, your solution fixed it