state-in-map.kt

fun <T, K> StateFlow<T>.mapState(
    scope: CoroutineScope,
    transform: (data: T) -> K
): StateFlow<K> {
    return mapLatest {
        transform(it)
    }
    .stateIn(scope, SharingStarted.Eagerly, transform(value))
}

fun <T, K> StateFlow<T>.mapState(
    scope: CoroutineScope,
    initialValue: K,
    transform: suspend (data: T) -> K
): StateFlow<K> {
    return mapLatest {
        transform(it)
    }
    .stateIn(scope, SharingStarted.Eagerly, initialValue)
}