// Add this:var _wr = function(type) {  var orig = history[type];  return function() {    var rv = orig.apply(this, arguments);    var e = new Event(type);    e.arguments = arguments;    window.dispatchEvent(e);    return rv;  };};history.pushState = _wr('pushState');history.replaceState = _wr('replaceState');// Use it like this:window.addEventListener('pushState', function(e) {  console.warn('THEY DID IT AGAIN!');});window.addEventListener('replaceState', function(e) {  console.warn('THEY DID IT AGAIN!');});