ES6 animation frame conscious event listener

addFrameConsciousEvent.js

const addFrameConsciousEvent = (obj, event, handler) => { //adapted from: https://developer.mozilla.org/en-US/docs/Web/Events/resize#Example
    let isRunning = false;

    const handlerWrapper = (e)=> {
        if (!isRunning){
            isRunning = true;
            requestAnimationFrame(()=>{ //throttling so only execute when the browser is ready to re-render
            	isRunning = false;
                handler(e);
            })
        }
    };

    obj.addEventListener(event, handlerWrapper);

    return ()=>obj.removeEventListener(event, handlerWrapper); //return a cleanup fn
};