reverted:
--- b/core/core.libraries.yml
+++ a/core/core.libraries.yml
@@ -48,15 +48,9 @@
     misc/drupal.js: { weight: -18 }
     misc/drupal.init.js: { weight: -17 }
   dependencies:
-    - core/drupal-init
     - core/domready
     - core/drupalSettings
 
-drupal-init:
-  version: VERSION
-  js:
-    misc/drupal-init.js: { weight: -19 }
-
 drupalSettings:
   version: VERSION
   js:
reverted:
--- b/core/misc/drupal-init.js
+++ /dev/null
@@ -1,23 +0,0 @@
-/**
- * @file
- *
- * Base framework for Drupal-specific JavaScript, behaviors.
- */
-(function (window) {
-
-  "use strict";
-
-  window.Drupal = { behaviors: {}, locale: {} };
-
-  // Allows users to turn off animations.
-  var noAnimate = localStorage.getItem('Drupal.noAnimate') === 'true';
-  // Class indicating that JS is enabled; used for styling purpose.
-  document.documentElement.className += ' js' + (noAnimate ? ' no-animate' : '');
-
-  // Allow other JavaScript libraries to use $.
-  if (window.jQuery) {
-    jQuery.noConflict();
-    jQuery.fx.off = noAnimate;
-  }
-
-})(window);
only in patch2:
unchanged:
--- a/core/misc/drupal.init.es6.js
+++ b/core/misc/drupal.init.es6.js
@@ -1,11 +1,18 @@
+// Allows users to turn off animations.
+const noAnimate = localStorage.getItem('Drupal.noAnimate') === 'true';
+
+// Class indicating that JS is enabled; used for styling purpose.
+document.documentElement.className += ' js';
+
+// Class indicating that no animations should be triggered.
+document.documentElement.className += `${noAnimate ? ' no-animate' : ''}`;
+
 // Allow other JavaScript libraries to use $.
 if (window.jQuery) {
   jQuery.noConflict();
+  jQuery.fx.off = noAnimate;
 }
 
-// Class indicating that JS is enabled; used for styling purpose.
-document.documentElement.className += ' js';
-
 // JavaScript should be made compatible with libraries other than jQuery by
 // wrapping it in an anonymous closure.
 
only in patch2:
unchanged:
--- a/core/misc/drupal.init.js
+++ b/core/misc/drupal.init.js
@@ -5,12 +5,17 @@
 * @preserve
 **/
 
+var noAnimate = localStorage.getItem('Drupal.noAnimate') === 'true';
+
+document.documentElement.className += ' js';
+
+document.documentElement.className += '' + (noAnimate ? ' no-animate' : '');
+
 if (window.jQuery) {
   jQuery.noConflict();
+  jQuery.fx.off = noAnimate;
 }
 
-document.documentElement.className += ' js';
-
 (function (domready, Drupal, drupalSettings) {
 
   'use strict';