LiveData->StateFlow conversion

ProfileViewModel.kt

class ProfileViewModel : ViewModel() {
    private val _name = MutableStateFlow("Ada")
    private val _lastName = MutableStateFlow("Lovelace")
    private val _likes =  MutableStateFlow(0)

    val name: StateFlow<String> = _name
    val lastName: StateFlow<String> = _lastName
    val likes: StateFlow<Int> = _likes

    // popularity is exposed as StateFlow using a transformation and the stateIn operator.
    val popularity: StateFlow<Popularity> = _likes.map {
        when {
            it > 9 -> Popularity.STAR
            it > 4 -> Popularity.POPULAR
            else -> Popularity.NORMAL
        }
    }.stateIn(viewModelScope, SharingStarted.Eagerly, Popularity.NORMAL)

    fun onLike() {
        _likes.value = _likes.value + 1
    }
}