Remove DOMContentLoaded Eventlisteners

Removing DOMContentLoaded Eventlisteners from
index files since the scripts
are embedded using the defer tag.

ee/app/assets/javascripts/pages/analytics/productivity_analytics/index.js

 import initProductivityAnalyticsApp from 'ee/analytics/productivity_analytics';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initProductivityAnalyticsApp();
-});
+initProductivityAnalyticsApp();

ee/app/assets/javascripts/pages/registrations/groups/new/index.js

@@ -5,9 +5,7 @@ import GroupPathValidator from '~/pages/groups/new/group_path_validator';
 import BindInOut from '~/behaviors/bind_in_out';
 import Group from '~/group';
 
-document.addEventListener('DOMContentLoaded', () => {
-  mountComponents();
-  new GroupPathValidator();
-  BindInOut.initAll();
-  new Group();
-});
+mountComponents();
+new GroupPathValidator();
+BindInOut.initAll();
+new Group();

ee/app/assets/javascripts/pages/registrations/projects/new/index.js

@@ -2,8 +2,6 @@ import mountProgressBar from 'ee/registrations/projects/new';
 import initProjectVisibilitySelector from '~/project_visibility';
 import initProjectNew from '~/projects/project_new';
 
-document.addEventListener('DOMContentLoaded', () => {
-  mountProgressBar();
-  initProjectVisibilitySelector();
-  initProjectNew.bindEvents();
-});
+mountProgressBar();
+initProjectVisibilitySelector();
+initProjectNew.bindEvents();

ee/app/assets/javascripts/pages/registrations/update_registration/index.js

 import mountProgressBar from 'ee/registrations/welcome';
 
-document.addEventListener('DOMContentLoaded', () => {
-  mountProgressBar();
-});
+mountProgressBar();

ee/app/assets/javascripts/pages/registrations/welcome/index.js

 import mountProgressBar from 'ee/registrations/welcome';
 
-document.addEventListener('DOMContentLoaded', () => {
-  mountProgressBar();
+mountProgressBar();
 
-  const emailUpdatesForm = document.querySelector('.js-email-opt-in');
-  const setupForCompany = document.querySelector('.js-setup-for-company');
-  const setupForMe = document.querySelector('.js-setup-for-me');
+const emailUpdatesForm = document.querySelector('.js-email-opt-in');
+const setupForCompany = document.querySelector('.js-setup-for-company');
+const setupForMe = document.querySelector('.js-setup-for-me');
 
-  setupForCompany.addEventListener('change', () => {
+setupForCompany.addEventListener('change', () => {
   emailUpdatesForm.classList.add('hidden');
-  });
+});
 
-  setupForMe.addEventListener('change', () => {
+setupForMe.addEventListener('change', () => {
   emailUpdatesForm.classList.remove('hidden');
-  });
 });

ee/changelogs/unreleased/remove-DOM-Content-Loaded-EventListener-from-registration-pages.yml

+---
+title: Remove DOMContentLoaded Eventlistener
+merge_request: 47619
+author:
+type: performance