diff --git a/src/getEventListeners.js b/src/getEventListeners.js
index 6876be2..15b6eff 100644
--- a/src/getEventListeners.js
+++ b/src/getEventListeners.js
@@ -1,86 +1,81 @@
-(function() {
-    'use strict';
-
+(function () {
+    "use strict";
+  
     // save the original methods before overwriting them
-    Element.prototype._addEventListener = Element.prototype.addEventListener;
-    Element.prototype._removeEventListener = Element.prototype.removeEventListener;
-
-    /**
-     * [addEventListener description]
-     * @param {[type]}  type       [description]
-     * @param {[type]}  listener   [description]
-     * @param {Boolean} useCapture [description]
-     */
-    Element.prototype.addEventListener = function(type,listener,useCapture=false) {
-        // declare listener
-        this._addEventListener(type,listener,useCapture);
-
-        if(!this.eventListenerList) this.eventListenerList = {};
-        if(!this.eventListenerList[type]) this.eventListenerList[type] = [];
-
-        // add listener to  event tracking list
-        this.eventListenerList[type].push( {type, listener, useCapture} );
-    };
-
-    /**
-     * [removeEventListener description]
-     * @param  {[type]}  type       [description]
-     * @param  {[type]}  listener   [description]
-     * @param  {Boolean} useCapture [description]
-     * @return {[type]}             [description]
-     */
-    Element.prototype.removeEventListener = function(type,listener,useCapture=false) {
-        // remove listener
-        this._removeEventListener(type,listener,useCapture);
-
-        if(!this.eventListenerList) this.eventListenerList = {};
-        if(!this.eventListenerList[type]) this.eventListenerList[type] = [];
-
-        // Find the event in the list, If a listener is registered twice, one
-        // with capture and one without, remove each one separately. Removal of
-        // a capturing listener does not affect a non-capturing version of the
-        // same listener, and vice versa.
-        for(let i=0; i<this.eventListenerList[type].length; i++){
-            if( this.eventListenerList[type][i].listener===listener && this.eventListenerList[type][i].useCapture===useCapture){
-                this.eventListenerList[type].splice(i, 1);
-                break;
+    [Document, Window, Element].forEach((cst) => {
+      if (typeof cst === "function") {
+        cst.prototype._addEventListener = cst.prototype.addEventListener;
+        cst.prototype._removeEventListener = cst.prototype.removeEventListener;
+  
+        /**
+         * [addEventListener description]
+         * @param {[type]}  type       [description]
+         * @param {[type]}  listener   [description]
+         * @param {Boolean} useCapture [description]
+         */
+        cst.prototype.addEventListener = function (
+          type,
+          listener,
+          useCapture = false
+        ) {
+          // declare listener
+          this._addEventListener(type, listener, useCapture);
+  
+          if (!this.eventListenerList) this.eventListenerList = {};
+          if (!this.eventListenerList[type]) this.eventListenerList[type] = [];
+  
+          // add listener to  event tracking list
+          this.eventListenerList[type].push({ type, listener, useCapture });
+        };
+  
+        /**
+         * [removeEventListener description]
+         * @param  {[type]}  type       [description]
+         * @param  {[type]}  listener   [description]
+         * @param  {Boolean} useCapture [description]
+         * @return {[type]}             [description]
+         */
+        cst.prototype.removeEventListener = function (
+          type,
+          listener,
+          useCapture = false
+        ) {
+          // remove listener
+          this._removeEventListener(type, listener, useCapture);
+  
+          if (!this.eventListenerList) this.eventListenerList = {};
+          if (!this.eventListenerList[type]) this.eventListenerList[type] = [];
+  
+          // Find the event in the list, If a listener is registered twice, one
+          // with capture and one without, remove each one separately. Removal of
+          // a capturing listener does not affect a non-capturing version of the
+          // same listener, and vice versa.
+          for (let i = 0; i < this.eventListenerList[type].length; i++) {
+            if (
+              this.eventListenerList[type][i].listener === listener &&
+              this.eventListenerList[type][i].useCapture === useCapture
+            ) {
+              this.eventListenerList[type].splice(i, 1);
+              break;
             }
-        }
-        // if no more events of the removed event type are left,remove the group
-        if(this.eventListenerList[type].length==0) delete this.eventListenerList[type];
-    };
-
-
-    /**
-     * [getEventListeners description]
-     * @param  {[type]} type [description]
-     * @return {[type]}      [description]
-     */
-    Element.prototype.getEventListeners = function(type){
-        if(!this.eventListenerList) this.eventListenerList = {};
-
-        // return reqested listeners type or all them
-        if(type===undefined)  return this.eventListenerList;
-        return this.eventListenerList[type];
-    };
-
-
-    /*
-    Element.prototype.clearEventListeners = function(a){
-        if(!this.eventListenerList)
-            this.eventListenerList = {};
-        if(a==undefined){
-            for(var x in (this.getEventListeners())) this.clearEventListeners(x);
-            return;
-        }
-        var el = this.getEventListeners(a);
-        if(el==undefined)
-            return;
-        for(var i = el.length - 1; i >= 0; --i) {
-            var ev = el[i];
-            this.removeEventListener(a, ev.listener, ev.useCapture);
-        }
-    };
-    */
-
-})();
+          }
+          // if no more events of the removed event type are left,remove the group
+          if (this.eventListenerList[type].length == 0)
+            delete this.eventListenerList[type];
+        };
+  
+        /**
+         * [getEventListeners description]
+         * @param  {[type]} type [description]
+         * @return {[type]}      [description]
+         */
+        cst.prototype.getEventListeners = function (type) {
+          if (!this.eventListenerList) this.eventListenerList = {};
+  
+          // return reqested listeners type or all them
+          if (type === undefined) return this.eventListenerList;
+          return this.eventListenerList[type];
+        };
+      }
+    });
+  })();
\ No newline at end of file