Archipelago Squatter

squat.js

// Bookmarklet Usage:
javascript:(function () {
  var audio = new Audio('https://notificationsounds.com/notification-sounds/definite-555/download/ogg');

  var targetNode = document.getElementsByClassName("ng-toast__list")[0];
  var config = {
    childList: true,
    subtree: true 
  };

  var callback = function(mutationsList) {
    for (var mutation of mutationsList) {
      audio.play();
    }   
  };

  var observer = new MutationObserver(callback);

  observer.observe(targetNode, config);
  alert("Squatter enabled!");
})();