Allow function/handler in the event definition

[kishorliv]

I was wondering if we could achieve something like this:

search_state: {
    on: {
      GO_BACK: (previousState) => {
        if(previousState === 'initial_state'){
            return 'initial_state'
        }

        return "manual_search_state";
      },
    },
  }

Basically, i want to dynamically go to the new state based on certain conditions. But right now, the handler is not allowed in the definition, it just accepts string.