What's the simplest way to transform a `StateFlow` into a different one? This is what I've done, not...

# coroutines

[David W]

What's the simplest way to transform a StateFlow into a different one?
This is what I've done, not sure if it's the best or even working...

val newStateFlow = originalStateFlow
        .map { it.doTransform() }
        .stateIn(scope = CoroutineScope(Job()), started = SharingStarted.Eagerly, initialValue = false)

[Joffrey]

You should never create a CoroutineScope on the fly like this without storing it into a variable. You need to control the cancellation of the coroutines that it manages by cancelling this scope at an appropriate time. Converting any flow into a state flow implies that a coroutine collects the source flow to update the state, and that work needs to stop when not needed anymore (state flows are hot)

[Joffrey]

Apart from that, I guess it's the correct way

[David W]

Thank you. It's used in a singleton and is intended to exist for the lifetime of the application.

[Joffrey]

Then this is a good use case for using GlobalScope (maybe even the only good use case?)