Is there a reason why combine flow would not emit end result?

val x = combine(y.invoke(), z.invoke()){ y+z }

Both

y

and

z

are flows of same type and they seem to not throw any errors.

You still have to collect that flow, combine returns just a cold transformed flow, it's not terminal operator

I am doing that with

collectAsState(initial = null)

but it keeps returning null, altho both

y

and

z

contain values. It's just that transform is never called.

combine is probably causing a new flow to get instantiated at each composition. Try moving the combine outside the composable so that all you do here is collect it

It seems that nested

.transformLatest

that is inside flow

y

causes an issue. Maybe I do not understand it enough, but changing to flow builder and emitting value solves an issue.

If you have a viewmodel do the combine there and expose the result