jQuery event leak detection

gistfile1.js

var walk_the_DOM = function walk(node, func) {
    func(node);
    node = node.firstChild;
    while (node) {
        walk(node, func);
        node = node.nextSibling;
    }
};

var totalSubscriptionCount = 0;
walk_the_DOM(document.body, function(node) {
  var events = jQuery._data( node, "events" );
  if(events) {
    // console.log('node', node.id, node.nodeName);
    // console.log('events', events);
    Object.keys(events).forEach(function(key) {
      var subscriptionCount = events[key].length;
      totalSubscriptionCount += subscriptionCount;
      
      if(subscriptionCount > 3) { 
        console.log('POSSIBLE MEMORY LEAK --> ', node.nodeName, node.id, key, events[key].length, events, node.className);
    
      } else {
        console.log(' -->', node.nodeName, node.id, key, events[key].length, node.className);
      }
      
    });
  }
});

console.log('totalSubscriptionCount: ', totalSubscriptionCount);