/**
 * EventEmitter v4.0.3 - git.io/ee
 * Oliver Caldwell
 * MIT license
 */(function(e){"use strict";function t(){}function i(e,t){if(r)return t.indexOf(e);var n=t.length;while(n--)if(t[n]===e)return n;return-1}var n=t.prototype,r=Array.prototype.indexOf?!0:!1;n.getListeners=function(e){var t=this._events||(this._events={});return t[e]||(t[e]=[])},n.addListener=function(e,t){var n=this.getListeners(e);return i(t,n)===-1&&n.push(t),this},n.on=n.addListener,n.removeListener=function(e,t){var n=this.getListeners(e),r=i(t,n);return r!==-1&&(n.splice(r,1),n.length===0&&(this._events[e]=null)),this},n.off=n.removeListener,n.addListeners=function(e,t){return this.manipulateListeners(!1,e,t)},n.removeListeners=function(e,t){return this.manipulateListeners(!0,e,t)},n.manipulateListeners=function(e,t,n){var r,i,s=e?this.removeListener:this.addListener,o=e?this.removeListeners:this.addListeners;if(typeof t=="object")for(r in t)t.hasOwnProperty(r)&&(i=t[r])&&(typeof i=="function"?s.call(this,r,i):o.call(this,r,i));else{r=n.length;while(r--)s.call(this,t,n[r])}return this},n.removeEvent=function(e){return e?this._events[e]=null:this._events=null,this},n.emitEvent=function(e,t){var n=this.getListeners(e),r=n.length,i;while(r--)i=t?n[r].apply(null,t):n[r](),i===!0&&this.removeListener(e,n[r]);return this},n.trigger=n.emitEvent,typeof define=="function"&&define.amd?define(function(){return t}):e.EventEmitter=t})(this);