Wait for promise resolve before triggering route

app.module.js

angular
.module('app', ['ui.router'])
.config(function ($urlRouterProvider) {
	$urlRouterProvider.deferIntercept();
});

.run(function ($rootScope, $urlRouter, WaitForThis) {
	
	var deRegister = $rootScope.$on('$locationChangeSuccess', function (e) {
        e.preventDefault();

        WaitForThis.init().then(function () {
       	  deRegister(); // if this only needs to be checked once, de-register the listener.
          $urlRouter.sync();
        });
      });

      $urlRouter.listen();
});