UserRepository.kt

class UserRepository(
    private val userLocalDataSource: UserLocalDataSource,
    private val externalScope: CoroutineScope
) {
    // DO NOT USE shareIn or stateIn in a function like this.
    // It creates a new SharedFlow/StateFlow per invocation which is not reused!
    fun getUser(): Flow<User> =
        userLocalDataSource.getUser()
            .shareIn(externalScope, WhileSubscribed())    

    // DO USE shareIn or stateIn in a property
    val user: Flow<User> = 
        userLocalDataSource.getUser().shareIn(externalScope, WhileSubscribed())
}