CoroutineExecute.kt

    fun <T : Any?> execute(
        fn: suspend () -> T,
        onError: (suspend (Exception) -> Unit)? = null,
        dispatcher: CoroutineDispatcher = Dispatchers.Default,
        reducer: S.(Async<T>) -> S
    ) {
        uiScope.launch(dispatcher) {
            setState { reducer(Loading()) }
            try {
                val result = fn()
                setState { reducer(Success(result)) }
            } catch (e: CancellationException) {
                throw e
            } catch (e: Exception) {
                onError?.invoke(e)
                setState { reducer(Fail(e)) }
            }
        }
    }