Added import for snippets:show in dispatcher

#41341

app/assets/javascripts/dispatcher.js

@@ -548,10 +548,7 @@ import Activities from './activities';
           new UserCallout();
           break;
         case 'snippets:show':
-          new LineHighlighter();
-          new BlobViewer();
-          initNotes();
-          new ZenMode();
+          import('./pages/snippets/show').then(m => m.default()).catch(fail);
           break;
         case 'import:fogbugz:new_user_map':
           new UsersSelect();

app/assets/javascripts/pages/snippets/show/index.js

+/* eslint-disable no-new */
+import LineHighlighter from '../../../line_highlighter';
+import BlobViewer from '../../../blob/viewer';
+import ZenMode from '../../../zen_mode';
+import initNotes from '../../../init_notes';
+
+export default () => {
+  new LineHighlighter();
+  new BlobViewer();
+  initNotes();
+  new ZenMode();
+};