Пример использования:

API

• setState

• setDesireState

• getCurrentPotentialTransitions

• getTransition

• getCurrentState

• checkTransition

import StateMachine from './StateMachine';

let statesConfig = [
 {
   name       : 'A',
   onEnter    : (deferred) => {
     console.log("Входим в А");
     deferred.resolve({ value: [1, 2, 3] });
   },
   onLeave    : (deferred) => {
     console.log("Вышли из А");
     deferred.resolve();
   },
   trigger    : (deferred, data) => {
     console.log('Логика для А');
     console.log('Данные для А: ' + JSON.stringify(data));

     data.next = 'B';
     deferred.resolve(data);

   },
   transitions: {
     C: (deferred, data) => {
         console.log("onTransition A->C");
         deferred.resolve(data);
     },
     B: (deferred, data) => {
       console.log("onTransition A->B");
       deferred.resolve(data);
     }
   }
 },
 {
   name       : 'B',
   onEnter    : (deferred, data) => {
     console.log("Вошли в B");
     deferred.resolve(data);
   },
   trigger    : (deferred, data) => {
     console.log('Логика для B');
     console.log('Данные для B: ' + JSON.stringify(data));

     setTimeout(() => deferred.resolve({ next: 'C' }), 1000);

   },
   transitions: {
     C: (deferred, data) => {
       console.log("onTransition B->C");
       deferred.resolve(data);
     },
     A: (deferred) => {
       console.log("onTransition B->A");
       deferred.resolve();
     }
   }
 },
 {
   name   : 'C',
   trigger: (deferred, data) => {

     console.log('Логика для С');
     console.log('Данные для C: ' + JSON.stringify(data));

     deferred.resolve(data);
   }
 },
 {
   name   : 'D',
   trigger: (deferred, data) => {

     console.log('Логика для D');
     console.log('Данные для D: ' + JSON.stringify(data));

     deferred.resolve({ data: "State D finished" });
   }
 }
];

let stateMachine = new StateMachine(statesConfig);

stateMachine.setState("A", {myArray: ['1','1','2']})
    .then((result) => {
        console.log(result);
    })
    .catch((err) => {
        console.log(err);
    });