ViewStateUpdate extension

fun <T : CoreViewState> MutableLiveData<T>.update(
    postUpdateEnabled: Boolean = true,
    block: T.() -> Unit
) {
    val data = value ?: run {
        Timber.w("You try to update NULL value of livedata")
        return
    }
    val hash = data.hashCode()
    block(data)
    val updatedHash = data.hashCode()
    if (postUpdateEnabled && hash != updatedHash) postValue(data)
}