Took the NotesApp out of the global scope

app/assets/javascripts/notes/index.js

@@ -5,9 +5,12 @@ import initSortDiscussions from './sort_discussions';
 import { store } from './stores';
 import initTimelineToggle from './timeline';
 
-const el = document.getElementById('js-vue-notes');
+export default () => {
+  const el = document.getElementById('js-vue-notes');
+  if (!el) {
+    return;
+  }
 
-if (el) {
   // eslint-disable-next-line no-new
   new Vue({
     el,
@@ -59,4 +62,4 @@ if (el) {
   initDiscussionFilters(store);
   initSortDiscussions(store);
   initTimelineToggle(store);
-}
+};

app/assets/javascripts/pages/projects/issues/show.js

@@ -3,10 +3,10 @@ import ShortcutsIssuable from '~/behaviors/shortcuts/shortcuts_issuable';
 import initIssuableSidebar from '~/init_issuable_sidebar';
 import { IssuableType } from '~/issuable_show/constants';
 import Issue from '~/issue';
-import '~/notes/index';
 import initIncidentApp from '~/issue_show/incident';
 import { initIssuableApp, initIssueHeaderActions } from '~/issue_show/issue';
 import { parseIssuableData } from '~/issue_show/utils/parse_data';
+import initNotesApp from '~/notes/index';
 import { store } from '~/notes/stores';
 import initRelatedMergeRequestsApp from '~/related_merge_requests';
 import initSentryErrorStackTraceApp from '~/sentry_error_stack_trace';
@@ -14,6 +14,8 @@ import initIssuableHeaderWarning from '~/vue_shared/components/issuable/init_iss
 import ZenMode from '~/zen_mode';
 
 export default function initShowIssue() {
+  initNotesApp();
+
   const initialDataEl = document.getElementById('js-issuable-app');
   const { issueType, ...issuableData } = parseIssuableData(initialDataEl);
 

ee/app/assets/javascripts/pages/groups/epics/show/index.js

@@ -2,9 +2,10 @@ import ShortcutsEpic from 'ee/behaviors/shortcuts/shortcuts_epic';
 import initEpicApp from 'ee/epic/epic_bundle';
 import EpicTabs from 'ee/epic/epic_tabs';
 import loadAwardsHandler from '~/awards_handler';
+import initNotesApp from '~/notes/index';
 import ZenMode from '~/zen_mode';
-import '~/notes/index';
 
+initNotesApp();
 initEpicApp();
 
 requestIdleCallback(() => {