z-fsm

z-fsm is a simple fsm(Finite State Machine) lib.

import { FiniteStateMachine } from "./z-fsm/fsm";

const fsm = new FiniteStateMachine("init", {
  init: {
    birth: "baby",
    die: "dead",
  },
  baby: {
    growup: "adult",
    die: "dead",
  },
  adult: {
    die: "dead",
  },
  dead: {
    relive: "baby",
  },
});

fsm.subscribe((ctx) => {
  console.log(ctx.state, ctx.action, ctx.nextState, ctx.actionState);
});

fsm.send("birth").then(
  () => console.log(fsm.currentState) // "baby"
);

fsm.send("growup", function guard() {
  return new Promise((resolve) => {
    setTimeout(() => resolve(true), 1000);
  });
});

fsm.send("study"); // Locked

fsm.stop();

fsm.send("growup"); // child