js/impress.js
function( target, type, listenerFunction ) {
            target.addEventListener( type, listenerFunction );
            pushEventListener( target, type, listenerFunction );
        }
function( target, type, listenerFunction ) {
            target.addEventListener( type, listenerFunction );
            pushEventListener( target, type, listenerFunction );
        }
function ( target , type , listenerFunction ) { target . addEventListener ( type , listenerFunction ) ; pushEventListener ( target , type , listenerFunction ) ; }
`addEventListener` combines DOM addEventListener with gc.pushEventListener
addEventListener combines DOM addEventListener with gc . pushEventListener