Refactored import of projects:tags:* and projects:tree:* of dispatcher.js

app/assets/javascripts/dispatcher.js

@@ -12,7 +12,6 @@ import notificationsDropdown from './notifications_dropdown';
 import groupAvatar from './group_avatar';
 import GroupLabelSubscription from './group_label_subscription';
 import LineHighlighter from './line_highlighter';
-import NewCommitForm from './new_commit_form';
 import Project from './project';
 import projectAvatar from './project_avatar';
 import MergeRequest from './merge_request';
@@ -39,7 +38,6 @@ import ShortcutsWiki from './shortcuts_wiki';
 import BlobViewer from './blob/viewer/index';
 import AutoWidthDropdownSelect from './issuable/auto_width_dropdown_select';
 import UsersSelect from './users_select';
-import RefSelectDropdown from './ref_select_dropdown';
 import GfmAutoComplete from './gfm_auto_complete';
 import Star from './star';
 import TreeView from './tree';
@@ -256,9 +254,9 @@ import { fetchCommitMergeRequests } from './commit_merge_requests';
           new AutoWidthDropdownSelect($('.js-target-branch-select')).init();
           break;
         case 'projects:tags:new':
-          new ZenMode();
-          new GLForm($('.tag-form'), true);
-          new RefSelectDropdown($('.js-branch-select'));
+          import('./pages/projects/tags/new')
+            .then(callDefault)
+            .catch(fail);
           break;
         case 'projects:snippets:show':
           initNotes();
@@ -412,13 +410,11 @@ import { fetchCommitMergeRequests } from './commit_merge_requests';
           groupAvatar();
           break;
         case 'projects:tree:show':
-          shortcut_handler = new ShortcutsNavigation();
-          new TreeView();
-          new BlobViewer();
-          new NewCommitForm($('.js-create-dir-form'));
-          $('#tree-slider').waitForImages(function() {
-            ajaxGet(document.querySelector('.js-tree-content').dataset.logsPath);
-          });
+          import('./pages/projects/tree/show')
+            .then((module) => {
+              shortcut_handler = module.default();
+            })
+            .catch(fail);
           break;
         case 'projects:find_file:show':
           const findElement = document.querySelector('.js-file-finder');

app/assets/javascripts/pages/projects/tags/new/index.js

+import RefSelectDropdown from '../../../../ref_select_dropdown';
+import ZenMode from '../../../../zen_mode';
+import GLForm from '../../../../gl_form';
+
+export default () => {
+  new ZenMode(); // eslint-disable-line no-new
+  new GLForm($('.tag-form'), true); // eslint-disable-line no-new
+  new RefSelectDropdown($('.js-branch-select')); // eslint-disable-line no-new
+};

app/assets/javascripts/pages/projects/tree/show/index.js

+import TreeView from '../../../../tree';
+import ShortcutsNavigation from '../../../../shortcuts_navigation';
+import BlobViewer from '../../../../blob/viewer';
+import NewCommitForm from '../../../../new_commit_form';
+import { ajaxGet } from '../../../../lib/utils/common_utils';
+
+export default () => {
+  new TreeView(); // eslint-disable-line no-new
+  new BlobViewer(); // eslint-disable-line no-new
+  new NewCommitForm($('.js-create-dir-form')); // eslint-disable-line no-new
+  $('#tree-slider').waitForImages(() =>
+    ajaxGet(document.querySelector('.js-tree-content').dataset.logsPath));
+
+  return new ShortcutsNavigation(); // eslint-disable-line no-new
+};
+