Pass in from/to in callbacks

[kamranayub]

This way I can better handle if I want to cancel a transition based on the source or destination.

fsm.on(MyState.Red, (from: MyState) => {
  if (from === MyState.Green) {
    console.log("Transitioned from green to red");
  }
});

fsm.onEnter(MyState.Red, (from: MyState) => {
  if (from === MyState.Green) {
    console.log("Transitioning from green to red");
  }
});

fsm.onExit(MyState.Red, (to: MyState) => {
  if (to === MyState.Green) {
    console.log("Transitioning from red to green");
  }
});

[eonarheim]

Agreed