Medium articles - MVI+FSM

FSM.kt

StateMachine.create<TimerState.State, TimerState.Event, TimerState.SideEffect> {
    initialState(TimerState.State.Idle)

    state<TimerState.State.Idle> {
        on<TimerState.Event.OnSetTimer> {
            transitionTo(TimerState.State.SettingTimer, TimerState.SideEffect.SetTimer)
        }
    }
    
    state<TimerState.State.SettingTimer> {
        on<TimerState.Event.OnTimerSet> {
            transitionTo(TimerState.State.Idle, TimerState.SideEffect.TimerReady(it.value))
        }
    }

    onTransition {
        val validTransition = it as? StateMachine.Transition.Valid ?: return@onTransition
        //emit ui state changes
    }
}