Merge pull request #11497 from grafana/dash-class-to-ts

migrated dash_class to ts

public/app/core/directives/dash_class.js → public/app/core/directives/dash_class.ts

-define([
-  'lodash',
-  'jquery',
-  '../core_module',
-],
-function (_, $, coreModule) {
-  'use strict';
+import _ from 'lodash';
+import coreModule from '../core_module';
 
-  coreModule.default.directive('dashClass', function() {
+/** @ngInject */
+export function dashClass() {
   return {
     link: function($scope, elem) {
-
       $scope.onAppEvent('panel-fullscreen-enter', function() {
         elem.toggleClass('panel-in-fullscreen', true);
       });
@@ -29,8 +24,8 @@ function (_, $, coreModule) {
           elem.removeClass('dashboard-page--settings-open');
         }
       });
-      }
+    },
   };
-  });
+}
 
-});
+coreModule.directive('dashClass', dashClass);