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var keyMirror = require('react/lib/keyMirror');

module.exports = {
  API: 'http://my-rest-api.com',

  ActionTypes: keyMirror({
    ADD_CONTACT: null,
    DELETE_CONTACT: null
  })
};

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var events = new EventEmitter();
var CHANGE_EVENT = 'CHANGE';

var todos = {};

var TodoStore = {
  
  addChangeListener: function(callback) {
    events.addListener(CHANGE_EVENT, callback);
  },

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import React, { Component } from 'react';

class Voucher extends Component {
  constructor() {
    super(…arguments)
    this.state = {
      passengers: [
        'Simmon, Robert A.',
        'Taylor, Kathleen R.'
      ],

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let updatedPassengers = this.state.passengers;
updatedPassengers.push('Mitchell, Vincent M.');
this.setState({passengers:updatedPassengers});

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// updatedPassengers is a new array, returned from concat
let updatedPassengers = this.state.passengers.concat('Mitchell, Vincent M.');
this.setState({passengers:updatedPassengers});

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// updatedTicket is a new object with the original properties of this.state.ticket 
// merged with the new flightNo.
var updatedTicket = Object.assign({}, this.state.ticket, {flightNo:'1010'});
this.setState({ticket:updatedTicket});

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let originalTicket = {
  company: 'Dalta',
  flightNo: '0990',
  departure: {
    airport: 'LAS',
    time: '2016-08-21T10:00:00.000Z'
  },
  arrival: {
    airport: 'MIA',
    time: '2016-08-21T14:41:10.000Z'

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let newTicket = Object.assign({}, originalTicket, {flightNo ‘5690’}}

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newTicket.arrival.airport='MCO'

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let student = {name:'John Caster', grades:['A','C','B']}