state manager, based on ember-concurrency

StateManager.js

import {
    timeout,
    task
} from 'ember-concurrency';

export class StateManager {
    constructor() {
        this.startExecution();
    }

    // will add one more task into
    sheduleTask(name, args) {
        this.stack.push([name, args]);
    }

    // stepOne task
    @task
        (function*(msg /* hello */ ) {
            alert(msg);
            this.sheduleTask('stepTwo', 42);
        }) stepOne;

    // stepTwo task
    @task
        (function*(msg /* 42 */ ) {
            alert(msg);
        }) stepTwo;

    // tasks stack
    stack = [
        ["stepOne", "hello"]
    ];

    async startExecution() {
        while (true) {
            // wait 64 ms after each task
            await timeout(64);
            let [taskName, args] = this.stack.shift();
            yield this[taskName].perform(args);
        }
    }
}