How to make http request in angular 2 before app initialization?

Question

Angular

There is such a question: I am making
an application on angular 2 together with google gmail API ( api + authorization)
So the question is, how can I get data (if I have already authorized before) and remove the authorization button during application initialization?
Thanks for the answer

Answer 1

if there is routing:

angular.run(function($rootScope){
  $rootScope.$on('$routeChangeStart', function(e){
    checkAuth().then(function (response) {
      // ... всё ок
    }, function(response){
      // ... всё плохо.
      $location.path('/login');
    });
  });
});

well, or route -> resolve, but the essence is the same.