emitter-b/dist/EmitterB.umd.js

An enhanced EventEmitter with extra methods for detecting whether an event has any handlers or not for efficient event handler attachment.

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t,n;if(!this._events)return this;if(!this._events.removeListener)return 0===arguments.length?this._events={}:this._events[e]&&delete this._events[e],this;if(0===arguments.length){for(t in this._events)"removeListener"!==t&&this.removeAllListeners(t);return this.removeAllListeners("removeListener"),this._events={},this}if(n=this._events[e],r(n))this.removeListener(e,n);else if(n)for(;n.length;)this.removeListener(e,n[n.length-1]);return delete this._events[e],this},n.prototype.listeners=function(e){return this._events&&this._events[e]?r(this._events[e])?[this._events[e]]:this._events[e].slice():[]},n.prototype.listenerCount=function(e){if(this._events){var t=this._events[e];if(r(t))return 1;if(t)return t.length}return 0},n.listenerCount=function(e,t){return e.listenerCount(t)}},function(e,t,n){"use strict";function r(){var e=arguments;if(1==e.length)var t={init:f},n=e[0];else var t=e[0],n=e[1];var 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