bridge.removeListener not works about electron-window-manager HOT 1 OPEN

'bridge': {
            /**
             * The event listeners
             * */
            listeners : {},

            /**
             * Sets the callback to trigger whenever an event is emitted
             * @param event The name of the event
             * @param callback The callback to trigger, this callback will be given the data passed (if any), and
             * the name of the targeted window and finally the name of the window that triggered/emitted the event
             * @return the handler that add into the event listeners array
             * */
            'on': function(event, callback){
                let id = 0;

                if(this.listeners[event]){
                    id = this.listeners[event].length;
                } else {
                    this.listeners[event] = [null]
                }

                windowManager.eventEmitter.addListener(event, this.listeners[event][id] = function(event){
                    callback.call(null, event.data, event.target, event.emittedBy);
                });

                return id;
            },

            /**
             * Remove a event listener returned by windowManger.bridge.on
             * or windowManager.bridge.addListener
             * @param event The name of the event
             * @param id the index of the listen handler returned by
             *        windowManager.bridge.on
             */
            'removeListener': function(event, id) {
                let handler;

                if(this.listeners[event] && this.listeners[event].length > id){
                    handler = this.listeners[event][id];
                }
                if(handler){
                    windowManager.eventEmitter.removeListener(event, handler);
                    this.listeners[event][id] = undefined;
                }
            },


            'removeListeners': function(event) {
                this.listeners[event] = undefined;
                windowManager.eventEmitter.removeAllListeners(event);
            },