Reactivate Optimizely on push state

activate.js

if (!history.onpushstate) {

  (function(history){
      var pushState = history.pushState;
      history.pushState = function(state) {
          if (typeof history.onpushstate == "function") {
              history.onpushstate({state: state});
          }
          return pushState.apply(history, arguments);
      }
  })(window.history);

  var currentUrl = document.location.hostname + document.location.pathname

  onPotentialRouteChange = function () {
    window.setTimeout(function() {
      var newUrl = document.location.hostname + document.location.pathname;
      if (newUrl !== currentUrl) {
        onRouteChange();
      }
      currentUrl = newUrl;
    }, 10);
  }

  history.onpushstate = onPotentialRouteChange;
  window.onpopstate = onPotentialRouteChange;

  onRouteChange = function() {
    optimizely.push({
      type: 'activate',
    });
  }

  
}