import { Machine } from 'xstate';

const feedbackMachine = Machine({
  id: 'feedback',
  initial: 'question',
  states: {
    question: {
      on: {
        CLICK_GOOD: 'thanks',
        CLICK_BAD: 'form',
        CLOSE: 'closed',
        ESC: 'closed'
      }
    },
    form: {
      on: {
        SUBMIT: 'thanks',
        CLOSE: 'closed',
        ESC: 'closed'
      }
    },
    thanks: {
      on: {
        CLOSE: 'closed',
        ESC: 'closed'
      }
    },
    closed: {
      type: 'final'
    }
  }
});

import { feedbackMachine } from './feedbackMachine';
import { useMachine } from '@xstate/react';

const App = () => {
  const [current, send] = useMachine(feedbackMachine);

  return (
    // ...
  );
}

import { Machine } from 'xstate';

const myMachine = Machine({
  // ...
});

const myService = interpret(myMachine)
  .onTransition(state => {
    analytics.track({
      target: state.value,
      source: state.history
        ? state.history.value
        : undefined,
      event: sanitize(event),
      timestamp: Date.now()
    });
  })
  .start();

import { Machine } from 'xstate';
import { getShortestPaths } from '@xstate/graph';

const myMachine = Machine({
  // ...
});

const shortestPaths = getShortestPaths(myMachine);

import { Machine } from 'xstate';
import { getShortestPaths } from '@xstate/graph';

const myMachine = Machine({
  // ...
});

const shortestPaths = getShortestPaths(myMachine);

service.onTransition(state => {
  analytics.track({
    source: state.history.value,
    target: state.value,
    context: state.context,
    event: state.event,
    timestamp: Date.now()
  })
});