Generated by XState Viz: https://xstate.js.org/viz

machine.js

  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)

const promiseMachine = Machine({
  id: "promise",
  initial: "pending",
  states: {
    pending: {
      RESOLVE: "resolved",
      REJECT: "rejected",
    },
    resolved: {
      type: "final",
    },
    rejected: {
      type: "final",
    },
  },
});

const promiseService = interpret(promiseMachine).onTransition(state =>
  console.log(state.value)
);

promiseService.start();

promiseService.send('RESOLVE');