text: /**
   * @since 150118 12:32
   * @author vivaxy
   */
  /**
   * messenger
   * @constructor
   */
  var Messenger = function () {
    this.events = {};
  };
  /**
   * bind functions to very event
   * @param event - event type name
   * @param callback - callback function
   */
  Messenger.prototype.on = function (event, callback) {
    if (!this.events[event]) {
      this.events[event] = [];
    }
    this.events[event].push(callback);
  };
  /**
   * emit some event with data
   * @param event - event type name
   * @param [data] - data
   */
  Messenger.prototype.fire = function (event, data) {
    var callbacks = this.events[event];
    if (callbacks) {
      callbacks.forEach(function (callback) {
        callback(data);
      });
    }
  };
  
  export default Messenger;
  