$stateProvider            .state('landing', {                url: '/',                views: {                    'body@': {                        template: '
     '                    }                },                resolve: {                    loading: ['$q', '$ocLazyLoad', function ($q, $ocLazyLoad) {                        let deferred = $q.defer();                        require.ensure([], function () {                            let landingModel = require('../app/landing/index.js')(ngModule);                            $ocLazyLoad.load({                                name: 'app'                            });                            deferred.resolve(landingModel);                        });                        return deferred.promise;                    }]                }            })