Too many watchers

watchers.js

(function () {
  var root = $(document.getElementsByTagName('body'));
  var watchers = [];
  var f = function (element) {
    if (element.data().hasOwnProperty('$scope')) {
      angular.forEach(element.data().$scope.$$watchers, function (watcher) {
        watchers.push(watcher);
      });
    }
    angular.forEach(element.children(), function (childElement) {
      f($(childElement));
    });
  };
  f(root);
  console.log(watchers.length);
})();