Cookie clicker audio notification

notification.js

(new MutationObserver(e => {
  if (e && e[0] && e[0].addedNodes && e[0].addedNodes.length > 0) {
    if (!window.cookieSound) {
      window.cookieSound = new Audio();
      window.cookieSound.src = 'https://github.com/schmich/marinara/raw/master/src/audio/f62b45bc.mp3';
    }
    window.cookieSound.play();
  }
})).observe(document.getElementById('shimmers'), { childList: true });