Hello why my flow is not catched when an exception...

# coroutines

[Pablo]

Hello why my flow is not catched when an exception is thrown? my flow is

flow {
val resultService = service.getWhatever()
val mapStuff = resultService.mapper() <-- it throws NullPointer
emit(mapStuff)
}

Then on my viewmodel I have

usecase.execute(2)
.catch{do something}
.collect{expectedStuff}

What I'm missing? Do I have to add a .catch  on my datasource so the viewmodel is aware something crashed?

[gildor]

what is not catched?

[Ruckus]

I believe they are asking why "why is the exception not caught (in catch { do something })"

[gildor]

exception will be caught by catch
not sure what kind behaviour is expected, try reproduce you issue on https://play.kotlinlang.org/
this sample doesn’t look complete

[Pablo]

resultService.mapper() is throwing a NPE and I thought doing the catch in the viewModel would get that crash but it closes the app

[gildor]

Could.you show a some complete reproducible example, I believe there is some another problem, catch works for this case