Модуль Angular 6 - угловой не определен

'use strict';
(function (angular) {
  // Create all modules and define dependencies to make sure they exist
  // and are loaded in the correct order to satisfy dependency injection
  // before all nested files are concatenated by Gulp

  // Config
  angular.module('ui.carousel.config', []).value('ui.carousel.config', {
    debug: true
  });

  // Modules
  angular.module('ui.carousel.providers', []);
  angular.module('ui.carousel.controllers', []);
  angular.module('ui.carousel.directives', []);
  angular.module('ui.carousel', ['ui.carousel.config', 'ui.carousel.directives', 'ui.carousel.controllers', 'ui.carousel.providers']);
})(angular); //error points here
'use strict';