diff --git a/core/misc/dialog.theme.css b/core/assets/css/dialog.theme.css
similarity index 100%
rename from core/misc/dialog.theme.css
rename to core/assets/css/dialog.theme.css
diff --git a/core/misc/dropbutton/dropbutton.css b/core/assets/css/dropbutton/dropbutton.css
similarity index 100%
rename from core/misc/dropbutton/dropbutton.css
rename to core/assets/css/dropbutton/dropbutton.css
diff --git a/core/misc/dropbutton/dropbutton.theme.css b/core/assets/css/dropbutton/dropbutton.theme.css
similarity index 100%
rename from core/misc/dropbutton/dropbutton.theme.css
rename to core/assets/css/dropbutton/dropbutton.theme.css
diff --git a/core/misc/print.css b/core/assets/css/print.css
similarity index 100%
rename from core/misc/print.css
rename to core/assets/css/print.css
diff --git a/core/misc/vertical-tabs.css b/core/assets/css/vertical-tabs.css
similarity index 100%
rename from core/misc/vertical-tabs.css
rename to core/assets/css/vertical-tabs.css
diff --git a/core/misc/active-link.js b/core/assets/js/active-link.js
similarity index 100%
rename from core/misc/active-link.js
rename to core/assets/js/active-link.js
diff --git a/core/misc/ajax.js b/core/assets/js/ajax.js
similarity index 100%
rename from core/misc/ajax.js
rename to core/assets/js/ajax.js
diff --git a/core/misc/announce.js b/core/assets/js/announce.js
similarity index 100%
rename from core/misc/announce.js
rename to core/assets/js/announce.js
diff --git a/core/misc/autocomplete.js b/core/assets/js/autocomplete.js
similarity index 100%
rename from core/misc/autocomplete.js
rename to core/assets/js/autocomplete.js
diff --git a/core/misc/batch.js b/core/assets/js/batch.js
similarity index 100%
rename from core/misc/batch.js
rename to core/assets/js/batch.js
diff --git a/core/misc/collapse.js b/core/assets/js/collapse.js
similarity index 100%
rename from core/misc/collapse.js
rename to core/assets/js/collapse.js
diff --git a/core/misc/debounce.js b/core/assets/js/debounce.js
similarity index 100%
rename from core/misc/debounce.js
rename to core/assets/js/debounce.js
diff --git a/core/misc/dialog/dialog.ajax.js b/core/assets/js/dialog/dialog.ajax.js
similarity index 100%
rename from core/misc/dialog/dialog.ajax.js
rename to core/assets/js/dialog/dialog.ajax.js
diff --git a/core/misc/dialog/dialog.jquery-ui.js b/core/assets/js/dialog/dialog.jquery-ui.js
similarity index 100%
rename from core/misc/dialog/dialog.jquery-ui.js
rename to core/assets/js/dialog/dialog.jquery-ui.js
diff --git a/core/misc/dialog/dialog.js b/core/assets/js/dialog/dialog.js
similarity index 100%
rename from core/misc/dialog/dialog.js
rename to core/assets/js/dialog/dialog.js
diff --git a/core/misc/dialog/dialog.position.js b/core/assets/js/dialog/dialog.position.js
similarity index 100%
rename from core/misc/dialog/dialog.position.js
rename to core/assets/js/dialog/dialog.position.js
diff --git a/core/misc/displace.js b/core/assets/js/displace.js
similarity index 100%
rename from core/misc/displace.js
rename to core/assets/js/displace.js
diff --git a/core/misc/dropbutton/dropbutton.js b/core/assets/js/dropbutton/dropbutton.js
similarity index 100%
rename from core/misc/dropbutton/dropbutton.js
rename to core/assets/js/dropbutton/dropbutton.js
diff --git a/core/misc/drupal.js b/core/assets/js/drupal.js
similarity index 100%
rename from core/misc/drupal.js
rename to core/assets/js/drupal.js
diff --git a/core/misc/form.js b/core/assets/js/form.js
similarity index 100%
rename from core/misc/form.js
rename to core/assets/js/form.js
diff --git a/core/misc/jquery.intrinsic.js b/core/assets/js/jquery.intrinsic.js
similarity index 100%
rename from core/misc/jquery.intrinsic.js
rename to core/assets/js/jquery.intrinsic.js
diff --git a/core/misc/machine-name.js b/core/assets/js/machine-name.js
similarity index 100%
rename from core/misc/machine-name.js
rename to core/assets/js/machine-name.js
diff --git a/core/misc/progress.js b/core/assets/js/progress.js
similarity index 100%
rename from core/misc/progress.js
rename to core/assets/js/progress.js
diff --git a/core/misc/states.js b/core/assets/js/states.js
similarity index 100%
rename from core/misc/states.js
rename to core/assets/js/states.js
diff --git a/core/misc/tabbingmanager.js b/core/assets/js/tabbingmanager.js
similarity index 100%
rename from core/misc/tabbingmanager.js
rename to core/assets/js/tabbingmanager.js
diff --git a/core/misc/tabledrag.js b/core/assets/js/tabledrag.js
similarity index 100%
rename from core/misc/tabledrag.js
rename to core/assets/js/tabledrag.js
diff --git a/core/misc/tableheader.js b/core/assets/js/tableheader.js
similarity index 100%
rename from core/misc/tableheader.js
rename to core/assets/js/tableheader.js
diff --git a/core/misc/tableresponsive.js b/core/assets/js/tableresponsive.js
similarity index 100%
rename from core/misc/tableresponsive.js
rename to core/assets/js/tableresponsive.js
diff --git a/core/misc/tableselect.js b/core/assets/js/tableselect.js
similarity index 100%
rename from core/misc/tableselect.js
rename to core/assets/js/tableselect.js
diff --git a/core/misc/timezone.js b/core/assets/js/timezone.js
similarity index 100%
rename from core/misc/timezone.js
rename to core/assets/js/timezone.js
diff --git a/core/misc/vertical-tabs.js b/core/assets/js/vertical-tabs.js
similarity index 100%
rename from core/misc/vertical-tabs.js
rename to core/assets/js/vertical-tabs.js
diff --git a/core/core.libraries.yml b/core/core.libraries.yml
index c8ab09e..a45c807 100644
--- a/core/core.libraries.yml
+++ b/core/core.libraries.yml
@@ -45,7 +45,7 @@ domready:
 drupal:
   version: VERSION
   js:
-    misc/drupal.js: { weight: -18 }
+    assets/js/drupal.js: { weight: -18 }
   dependencies:
     - core/domready
     - core/drupalSettings
@@ -67,7 +67,7 @@ drupalSettings:
 drupal.active-link:
   version: VERSION
   js:
-    misc/active-link.js: {}
+    assets/js/active-link.js: {}
   dependencies:
     - core/drupal
     - core/drupalSettings
@@ -76,7 +76,7 @@ drupal.active-link:
 drupal.ajax:
   version: VERSION
   js:
-    misc/ajax.js: {}
+    assets/js/ajax.js: {}
   drupalSettings:
     # These placeholder values will be set by system_js_settings_alter().
     ajaxPageState:
@@ -93,7 +93,7 @@ drupal.ajax:
 drupal.announce:
   version: VERSION
   js:
-    misc/announce.js: {}
+    assets/js/announce.js: {}
   dependencies:
     - core/drupal
     - core/drupal.debounce
@@ -101,7 +101,7 @@ drupal.announce:
 drupal.autocomplete:
   version: VERSION
   js:
-    misc/autocomplete.js: { weight: -1 }
+    assets/js/autocomplete.js: { weight: -1 }
   dependencies:
     - core/jquery
     - core/drupal
@@ -112,7 +112,7 @@ drupal.autocomplete:
 drupal.batch:
   version: VERSION
   js:
-    misc/batch.js: { cache: false }
+    assets/js/batch.js: { cache: false }
   dependencies:
     - core/jquery
     - core/drupal
@@ -124,7 +124,7 @@ drupal.batch:
 drupal.collapse:
   version: VERSION
   js:
-    misc/collapse.js: {}
+    assets/js/collapse.js: {}
   dependencies:
     - core/jquery
     - core/modernizr
@@ -135,7 +135,7 @@ drupal.collapse:
 drupal.debounce:
   version: VERSION
   js:
-    misc/debounce.js: {}
+    assets/js/debounce.js: {}
   dependencies:
     # @todo Remove Drupal dependency.
     - core/drupal
@@ -143,12 +143,12 @@ drupal.debounce:
 drupal.dialog:
   version: VERSION
   js:
-    misc/dialog/dialog.js: {}
-    misc/dialog/dialog.position.js: {}
-    misc/dialog/dialog.jquery-ui.js: {}
+    assets/js/dialog/dialog.js: {}
+    assets/js/dialog/dialog.position.js: {}
+    assets/js/dialog/dialog.jquery-ui.js: {}
   css:
     theme:
-      misc/dialog.theme.css: {}
+      assets/css/dialog.theme.css: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -160,7 +160,7 @@ drupal.dialog:
 drupal.dialog.ajax:
   version: VERSION
   js:
-    misc/dialog/dialog.ajax.js: {}
+    assets/js/dialog/dialog.ajax.js: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -171,7 +171,7 @@ drupal.dialog.ajax:
 drupal.displace:
   version: VERSION
   js:
-    misc/displace.js: {}
+    assets/js/displace.js: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -180,12 +180,12 @@ drupal.displace:
 drupal.dropbutton:
   version: VERSION
   js:
-    misc/dropbutton/dropbutton.js: {}
+    assets/js/dropbutton/dropbutton.js: {}
   css:
     component:
-      misc/dropbutton/dropbutton.css: {}
+      assets/css/dropbutton/dropbutton.css: {}
     theme:
-      misc/dropbutton/dropbutton.theme.css: {}
+      assets/css/dropbutton/dropbutton.theme.css: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -195,7 +195,7 @@ drupal.dropbutton:
 drupal.form:
   version: VERSION
   js:
-    misc/form.js: {}
+    assets/js/form.js: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -206,7 +206,7 @@ drupal.form:
 drupal.machine-name:
   version: VERSION
   js:
-    misc/machine-name.js: {}
+    assets/js/machine-name.js: {}
   dependencies:
     - core/jquery
     - core/jquery.once
@@ -216,7 +216,7 @@ drupal.machine-name:
 drupal.progress:
   version: VERSION
   js:
-    misc/progress.js: {}
+    assets/js/progress.js: {}
   dependencies:
     - core/drupal
     - core/jquery
@@ -225,7 +225,7 @@ drupal.progress:
 drupal.states:
   version: VERSION
   js:
-    misc/states.js: {}
+    assets/js/states.js: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -235,7 +235,7 @@ drupal.states:
 drupal.tabbingmanager:
   version: VERSION
   js:
-    misc/tabbingmanager.js: {}
+    assets/js/tabbingmanager.js: {}
   dependencies:
     - core/jquery
     # Supplies the ':tabbable' pseudo selector.
@@ -245,7 +245,7 @@ drupal.tabbingmanager:
 drupal.tabledrag:
   version: VERSION
   js:
-    misc/tabledrag.js: { weight: -1 }
+    assets/js/tabledrag.js: { weight: -1 }
   dependencies:
     - core/jquery
     - core/modernizr
@@ -257,7 +257,7 @@ drupal.tabledrag:
 drupal.tableheader:
   version: VERSION
   js:
-    misc/tableheader.js: {}
+    assets/js/tableheader.js: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -268,7 +268,7 @@ drupal.tableheader:
 drupal.tableresponsive:
   version: VERSION
   js:
-    misc/tableresponsive.js: {}
+    assets/js/tableresponsive.js: {}
   dependencies:
     - core/jquery
     - core/drupal
@@ -277,7 +277,7 @@ drupal.tableresponsive:
 drupal.tableselect:
   version: VERSION
   js:
-    misc/tableselect.js: {}
+    assets/js/tableselect.js: {}
   dependencies:
     - core/drupal
     - core/jquery
@@ -286,7 +286,7 @@ drupal.tableselect:
 drupal.timezone:
   version: VERSION
   js:
-    misc/timezone.js: {}
+    assets/js/timezone.js: {}
   dependencies:
     - core/jquery
     - core/jquery.once
@@ -296,10 +296,10 @@ drupal.vertical-tabs:
   version: VERSION
   js:
     # Load before core/drupal.collapse.
-    misc/vertical-tabs.js: { weight: -1 }
+    assets/js/vertical-tabs.js: { weight: -1 }
   css:
     component:
-      misc/vertical-tabs.css: {}
+      assets/css/vertical-tabs.css: {}
   dependencies:
     - core/jquery
     - core/jquery.once
@@ -372,7 +372,7 @@ jquery.form:
 jquery.intrinsic:
   version: VERSION
   js:
-    misc/jquery.intrinsic.js: {}
+    assets/js/jquery.intrinsic.js: {}
   dependencies:
     - core/jquery
 
diff --git a/core/lib/Drupal/Core/Ajax/AddCssCommand.php b/core/lib/Drupal/Core/Ajax/AddCssCommand.php
index ccd6312..d0a8a41 100644
--- a/core/lib/Drupal/Core/Ajax/AddCssCommand.php
+++ b/core/lib/Drupal/Core/Ajax/AddCssCommand.php
@@ -13,9 +13,9 @@
  * An AJAX command for adding css to the page via ajax.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.add_css()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
- * @see misc/ajax.js
+ * @see assets/js/ajax.js
  *
  * @ingroup ajax
  */
diff --git a/core/lib/Drupal/Core/Ajax/AfterCommand.php b/core/lib/Drupal/Core/Ajax/AfterCommand.php
index 9522783..a31c987 100644
--- a/core/lib/Drupal/Core/Ajax/AfterCommand.php
+++ b/core/lib/Drupal/Core/Ajax/AfterCommand.php
@@ -17,7 +17,7 @@
  * given selector.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @see http://docs.jquery.com/Manipulation/after#content
  *
diff --git a/core/lib/Drupal/Core/Ajax/AppendCommand.php b/core/lib/Drupal/Core/Ajax/AppendCommand.php
index bf56362..bc1340c 100644
--- a/core/lib/Drupal/Core/Ajax/AppendCommand.php
+++ b/core/lib/Drupal/Core/Ajax/AppendCommand.php
@@ -17,7 +17,7 @@
  * by the given selector.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @see http://docs.jquery.com/Manipulation/append#content
  *
diff --git a/core/lib/Drupal/Core/Ajax/BeforeCommand.php b/core/lib/Drupal/Core/Ajax/BeforeCommand.php
index 8a97a88..a63b25e 100644
--- a/core/lib/Drupal/Core/Ajax/BeforeCommand.php
+++ b/core/lib/Drupal/Core/Ajax/BeforeCommand.php
@@ -17,7 +17,7 @@
  * the given selector.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @see http://docs.jquery.com/Manipulation/before#content
  *
diff --git a/core/lib/Drupal/Core/Ajax/ChangedCommand.php b/core/lib/Drupal/Core/Ajax/ChangedCommand.php
index 2832d58..11491da 100644
--- a/core/lib/Drupal/Core/Ajax/ChangedCommand.php
+++ b/core/lib/Drupal/Core/Ajax/ChangedCommand.php
@@ -16,7 +16,7 @@
  * given selector as 'ajax-changed'.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.changed()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @ingroup ajax
  */
diff --git a/core/lib/Drupal/Core/Ajax/CssCommand.php b/core/lib/Drupal/Core/Ajax/CssCommand.php
index 470d583..d960190 100644
--- a/core/lib/Drupal/Core/Ajax/CssCommand.php
+++ b/core/lib/Drupal/Core/Ajax/CssCommand.php
@@ -16,7 +16,7 @@
  * apply the CSS arguments to elements matched by the given selector.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.css() defined
- * in misc/ajax.js.
+ * in assets/js/ajax.js.
  *
  * @see http://docs.jquery.com/CSS/css#properties
  *
diff --git a/core/lib/Drupal/Core/Ajax/DataCommand.php b/core/lib/Drupal/Core/Ajax/DataCommand.php
index 5b40e30..d04bb3c 100644
--- a/core/lib/Drupal/Core/Ajax/DataCommand.php
+++ b/core/lib/Drupal/Core/Ajax/DataCommand.php
@@ -16,7 +16,7 @@
  * selector via jQuery's data cache.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.data() defined
- * in misc/ajax.js.
+ * in assets/js/ajax.js.
  *
  * @ingroup ajax
  */
diff --git a/core/lib/Drupal/Core/Ajax/HtmlCommand.php b/core/lib/Drupal/Core/Ajax/HtmlCommand.php
index 82de657..13125c6 100644
--- a/core/lib/Drupal/Core/Ajax/HtmlCommand.php
+++ b/core/lib/Drupal/Core/Ajax/HtmlCommand.php
@@ -17,7 +17,7 @@
  * leaving the outer tags intact.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @see http://docs.jquery.com/Attributes/html#val
  *
diff --git a/core/lib/Drupal/Core/Ajax/InsertCommand.php b/core/lib/Drupal/Core/Ajax/InsertCommand.php
index a0b10db..a143e86 100644
--- a/core/lib/Drupal/Core/Ajax/InsertCommand.php
+++ b/core/lib/Drupal/Core/Ajax/InsertCommand.php
@@ -17,7 +17,7 @@
  * variable of the element that triggered the request.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @ingroup ajax
  */
diff --git a/core/lib/Drupal/Core/Ajax/InvokeCommand.php b/core/lib/Drupal/Core/Ajax/InvokeCommand.php
index 4aa1ea1..1da7e34 100644
--- a/core/lib/Drupal/Core/Ajax/InvokeCommand.php
+++ b/core/lib/Drupal/Core/Ajax/InvokeCommand.php
@@ -18,7 +18,7 @@
  * removeClass(), toggleClass(), etc.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.invoke()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @ingroup ajax
  */
diff --git a/core/lib/Drupal/Core/Ajax/PrependCommand.php b/core/lib/Drupal/Core/Ajax/PrependCommand.php
index 6409a6a..34551a2 100644
--- a/core/lib/Drupal/Core/Ajax/PrependCommand.php
+++ b/core/lib/Drupal/Core/Ajax/PrependCommand.php
@@ -17,7 +17,7 @@
  * by the given selector.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @see http://docs.jquery.com/Manipulation/prepend#content
  *
diff --git a/core/lib/Drupal/Core/Ajax/RemoveCommand.php b/core/lib/Drupal/Core/Ajax/RemoveCommand.php
index f0e5aab..def44f8 100644
--- a/core/lib/Drupal/Core/Ajax/RemoveCommand.php
+++ b/core/lib/Drupal/Core/Ajax/RemoveCommand.php
@@ -17,7 +17,7 @@
  * within them.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.remove()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @see http://docs.jquery.com/Manipulation/remove#expr
  *
diff --git a/core/lib/Drupal/Core/Ajax/ReplaceCommand.php b/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
index 91514a3..4a71d88 100644
--- a/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
+++ b/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
@@ -17,7 +17,7 @@
  * selector with the given HTML.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.insert()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * See
  * @link http://docs.jquery.com/Manipulation/replaceWith#content jQuery replaceWith command @endlink
diff --git a/core/lib/Drupal/Core/Ajax/RestripeCommand.php b/core/lib/Drupal/Core/Ajax/RestripeCommand.php
index 708344c..ffb59b9 100644
--- a/core/lib/Drupal/Core/Ajax/RestripeCommand.php
+++ b/core/lib/Drupal/Core/Ajax/RestripeCommand.php
@@ -16,7 +16,7 @@
  * usually used after a table has been modified by a replace or append command.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.restripe()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @ingroup ajax
  */
diff --git a/core/lib/Drupal/Core/Ajax/SettingsCommand.php b/core/lib/Drupal/Core/Ajax/SettingsCommand.php
index a5a8dc8..c574756 100644
--- a/core/lib/Drupal/Core/Ajax/SettingsCommand.php
+++ b/core/lib/Drupal/Core/Ajax/SettingsCommand.php
@@ -17,7 +17,7 @@
  * given array, depending on the value of the $merge parameter.
  *
  * This command is implemented by Drupal.AjaxCommands.prototype.settings()
- * defined in misc/ajax.js.
+ * defined in assets/js/ajax.js.
  *
  * @ingroup ajax
  */
diff --git a/core/lib/Drupal/Core/Ajax/UpdateBuildIdCommand.php b/core/lib/Drupal/Core/Ajax/UpdateBuildIdCommand.php
index 2ce74db..bb6af78 100644
--- a/core/lib/Drupal/Core/Ajax/UpdateBuildIdCommand.php
+++ b/core/lib/Drupal/Core/Ajax/UpdateBuildIdCommand.php
@@ -18,7 +18,7 @@
  * forms.
  *
  * This command is implemented by
- * Drupal.AjaxCommands.prototype.update_build_id() defined in misc/ajax.js.
+ * Drupal.AjaxCommands.prototype.update_build_id() defined in assets/js/ajax.js.
  *O
  * @ingroup ajax
  */
diff --git a/core/modules/book/templates/book-export-html.html.twig b/core/modules/book/templates/book-export-html.html.twig
index 5fb2e97..e7e258b 100644
--- a/core/modules/book/templates/book-export-html.html.twig
+++ b/core/modules/book/templates/book-export-html.html.twig
@@ -24,7 +24,7 @@
     <title>{{ title }}</title>
     {{ page.head }}
     <base href="{{ base_url }}" />
-    <link type="text/css" rel="stylesheet" href="misc/print.css" />
+    <link type="text/css" rel="stylesheet" href="assets/css/print.css" />
   </head>
   <body>
     {#
diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index 42a6772..9fffd0f 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -498,7 +498,7 @@ function locale_js_alter(&$javascript, AttachedAssetsInterface $assets) {
       $js_translation_asset['data'] = $translation_file;
       // @todo Remove this when https://www.drupal.org/node/1945262 lands.
       // Decrease the weight so that the translation file is loaded first.
-      $js_translation_asset['weight'] = $javascript['core/misc/drupal.js']['weight'] - 0.001;
+      $js_translation_asset['weight'] = $javascript['core/assets/js/drupal.js']['weight'] - 0.001;
     }
     else {
       // If no translation file exists, then remove the placeholder JS asset.
diff --git a/core/modules/locale/src/Tests/LocaleJavascriptTranslationTest.php b/core/modules/locale/src/Tests/LocaleJavascriptTranslationTest.php
index e8b9412..842427b 100644
--- a/core/modules/locale/src/Tests/LocaleJavascriptTranslationTest.php
+++ b/core/modules/locale/src/Tests/LocaleJavascriptTranslationTest.php
@@ -144,7 +144,7 @@ public function testLocaleTranslationJsDependencies() {
     $js_filename = $prefix . '_' . $js_translation_files[$prefix] . '.js';
 
     // Assert translations JS is included before drupal.js.
-    $this->assertTrue(strpos($this->content, $js_filename) < strpos($this->content, 'core/misc/drupal.js'), 'Translations are included before Drupal.t.');
+    $this->assertTrue(strpos($this->content, $js_filename) < strpos($this->content, 'core/assets/js/drupal.js'), 'Translations are included before Drupal.t.');
   }
 
 }
diff --git a/core/modules/simpletest/simpletest.module b/core/modules/simpletest/simpletest.module
index 513d46d..a6a6de6 100644
--- a/core/modules/simpletest/simpletest.module
+++ b/core/modules/simpletest/simpletest.module
@@ -55,8 +55,8 @@ function simpletest_js_alter(&$javascript, AttachedAssetsInterface $assets) {
   // Since SimpleTest is a special use case for the table select, stick the
   // SimpleTest JavaScript above the table select.
   $simpletest = drupal_get_path('module', 'simpletest') . '/simpletest.js';
-  if (array_key_exists($simpletest, $javascript) && array_key_exists('core/misc/tableselect.js', $javascript)) {
-    $javascript[$simpletest]['weight'] = $javascript['core/misc/tableselect.js']['weight'] - 1;
+  if (array_key_exists($simpletest, $javascript) && array_key_exists('core/assets/js/tableselect.js', $javascript)) {
+    $javascript[$simpletest]['weight'] = $javascript['core/assets/js/tableselect.js']['weight'] - 1;
   }
 }
 
diff --git a/core/modules/system/language.api.php b/core/modules/system/language.api.php
index d0ab879..f09579d 100644
--- a/core/modules/system/language.api.php
+++ b/core/modules/system/language.api.php
@@ -58,7 +58,7 @@
  * - For Twig templates, use 't' or 'trans' filters to indicate translatable
  *   text. See https://www.drupal.org/node/2133321 for more information.
  * - In JavaScript code, use the Drupal.t() and Drupal.formatPlural() functions
- *   (defined in core/misc/drupal.js) to translate UI text.
+ *   (defined in core/assets/js/drupal.js) to translate UI text.
  * - If you are using a custom module, theme, etc. that is not hosted on
  *   Drupal.org, see
  *   @link interface_translation_properties Interface translation properties topic @endlink
diff --git a/core/modules/system/src/Tests/Common/AttachedAssetsTest.php b/core/modules/system/src/Tests/Common/AttachedAssetsTest.php
index a52db9b..e96e9f5 100644
--- a/core/modules/system/src/Tests/Common/AttachedAssetsTest.php
+++ b/core/modules/system/src/Tests/Common/AttachedAssetsTest.php
@@ -241,7 +241,7 @@ function testHeaderHTML() {
     $rendered_js = $this->renderer->render($js_render_array);
     $query_string = $this->container->get('state')->get('system.css_js_query_string') ?: '0';
     $this->assertNotIdentical(strpos($rendered_js, '<script src="' . file_create_url('core/modules/system/tests/modules/common_test/header.js') . '?' . $query_string . '"></script>'), FALSE, 'The JS asset in common_test/js-header appears in the header.');
-    $this->assertNotIdentical(strpos($rendered_js, '<script src="' . file_create_url('core/misc/drupal.js')), FALSE, 'The JS asset of the direct dependency (core/drupal) of common_test/js-header appears in the header.');
+    $this->assertNotIdentical(strpos($rendered_js, '<script src="' . file_create_url('core/assets/js/drupal.js')), FALSE, 'The JS asset of the direct dependency (core/drupal) of common_test/js-header appears in the header.');
     $this->assertNotIdentical(strpos($rendered_js, '<script src="' . file_create_url('core/assets/vendor/domready/ready.min.js')), FALSE, 'The JS asset of the indirect dependency (core/domready) of common_test/js-header appears in the header.');
   }
 
@@ -403,7 +403,7 @@ function testAlter() {
     $js = $this->assetResolver->getJsAssets($assets, FALSE)[1];
     $js_render_array = \Drupal::service('asset.js.collection_renderer')->render($js);
     $rendered_js = $this->renderer->render($js_render_array);
-    $this->assertTrue(strpos($rendered_js, 'simpletest.js') < strpos($rendered_js, 'core/misc/tableselect.js'), 'Altering JavaScript weight through the alter hook.');
+    $this->assertTrue(strpos($rendered_js, 'simpletest.js') < strpos($rendered_js, 'core/assets/js/tableselect.js'), 'Altering JavaScript weight through the alter hook.');
   }
 
   /**
diff --git a/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php b/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php
index a69da46..0aeea8b 100644
--- a/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php
+++ b/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php
@@ -40,8 +40,8 @@ protected function setUp() {
    */
   function testJavaScriptOrdering() {
     $this->drupalGet('form_test/vertical-tabs');
-    $position1 = strpos($this->content, 'core/misc/vertical-tabs.js');
-    $position2 = strpos($this->content, 'core/misc/collapse.js');
+    $position1 = strpos($this->content, 'core/assets/js/vertical-tabs.js');
+    $position2 = strpos($this->content, 'core/assets/js/collapse.js');
     $this->assertTrue($position1 !== FALSE && $position2 !== FALSE && $position1 < $position2, 'vertical-tabs.js is included before collapse.js');
   }
 
diff --git a/core/modules/system/src/Tests/System/SystemAuthorizeTest.php b/core/modules/system/src/Tests/System/SystemAuthorizeTest.php
index cbc359a..de8da16 100644
--- a/core/modules/system/src/Tests/System/SystemAuthorizeTest.php
+++ b/core/modules/system/src/Tests/System/SystemAuthorizeTest.php
@@ -61,6 +61,6 @@ function testFileTransferHooks() {
     $this->assertText('System Test Username');
     // Test that \Drupal\Core\Render\BareHtmlPageRenderer adds assets as
     // expected to the first page of the authorize.php script.
-    $this->assertRaw('core/misc/states.js');
+    $this->assertRaw('core/assets/js/states.js');
   }
 }
diff --git a/core/modules/system/tests/upgrade/drupal-7.language.database.php b/core/modules/system/tests/upgrade/drupal-7.language.database.php
index b113e36..5ce84b0 100644
--- a/core/modules/system/tests/upgrade/drupal-7.language.database.php
+++ b/core/modules/system/tests/upgrade/drupal-7.language.database.php
@@ -124,7 +124,7 @@
 ))
 ->values(array(
   'lid' => '1',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'An AJAX HTTP error occurred.',
   'context' => '',
@@ -132,7 +132,7 @@
 ))
 ->values(array(
   'lid' => '2',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'HTTP Result Code: !status',
   'context' => '',
@@ -140,7 +140,7 @@
 ))
 ->values(array(
   'lid' => '3',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'An AJAX HTTP request terminated abnormally.',
   'context' => '',
@@ -148,7 +148,7 @@
 ))
 ->values(array(
   'lid' => '4',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'Debugging information follows.',
   'context' => '',
@@ -156,7 +156,7 @@
 ))
 ->values(array(
   'lid' => '5',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'Path: !uri',
   'context' => '',
@@ -164,7 +164,7 @@
 ))
 ->values(array(
   'lid' => '6',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'StatusText: !statusText',
   'context' => '',
@@ -172,7 +172,7 @@
 ))
 ->values(array(
   'lid' => '7',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'ResponseText: !responseText',
   'context' => '',
@@ -180,7 +180,7 @@
 ))
 ->values(array(
   'lid' => '8',
-  'location' => 'misc/drupal.js',
+  'location' => 'assets/js/drupal.js',
   'textgroup' => 'default',
   'source' => 'ReadyState: !readyState',
   'context' => '',
@@ -236,7 +236,7 @@
 ))
 ->values(array(
   'lid' => '15',
-  'location' => 'misc/tabledrag.js',
+  'location' => 'assets/js/tabledrag.js',
   'textgroup' => 'default',
   'source' => 'Re-order rows by numerical weight instead of dragging.',
   'context' => '',
@@ -244,7 +244,7 @@
 ))
 ->values(array(
   'lid' => '16',
-  'location' => 'misc/tabledrag.js',
+  'location' => 'assets/js/tabledrag.js',
   'textgroup' => 'default',
   'source' => 'Show row weights',
   'context' => '',
@@ -252,7 +252,7 @@
 ))
 ->values(array(
   'lid' => '17',
-  'location' => 'misc/tabledrag.js',
+  'location' => 'assets/js/tabledrag.js',
   'textgroup' => 'default',
   'source' => 'Hide row weights',
   'context' => '',
@@ -260,7 +260,7 @@
 ))
 ->values(array(
   'lid' => '18',
-  'location' => 'misc/tabledrag.js',
+  'location' => 'assets/js/tabledrag.js',
   'textgroup' => 'default',
   'source' => 'Drag to re-order',
   'context' => '',
@@ -268,7 +268,7 @@
 ))
 ->values(array(
   'lid' => '19',
-  'location' => 'misc/tabledrag.js',
+  'location' => 'assets/js/tabledrag.js',
   'textgroup' => 'default',
   'source' => 'Changes made in this table will not be saved until the form is submitted.',
   'context' => '',
@@ -276,7 +276,7 @@
 ))
 ->values(array(
   'lid' => '20',
-  'location' => 'misc/collapse.js',
+  'location' => 'assets/js/collapse.js',
   'textgroup' => 'default',
   'source' => 'Hide',
   'context' => '',
@@ -284,7 +284,7 @@
 ))
 ->values(array(
   'lid' => '21',
-  'location' => 'misc/collapse.js',
+  'location' => 'assets/js/collapse.js',
   'textgroup' => 'default',
   'source' => 'Show',
   'context' => '',
@@ -384,7 +384,7 @@
 ))
 ->values(array(
   'name' => 'javascript_parsed',
-  'value' => 'a:16:{i:0;s:14:"misc/drupal.js";i:1;s:14:"misc/jquery.js";i:2;s:19:"misc/jquery.once.js";s:10:"refresh:ca";s:7:"waiting";i:3;s:29:"misc/ui/jquery.ui.core.min.js";i:4;s:21:"misc/jquery.ba-bbq.js";i:5;s:33:"modules/overlay/overlay-parent.js";i:6;s:32:"modules/contextual/contextual.js";i:7;s:21:"misc/jquery.cookie.js";i:8;s:26:"modules/toolbar/toolbar.js";i:9;s:32:"modules/overlay/overlay-child.js";i:10;s:19:"misc/tableheader.js";i:11;s:17:"misc/tabledrag.js";i:12;s:12:"misc/form.js";i:13;s:16:"misc/collapse.js";s:10:"refresh:cv";s:7:"waiting";}',
+  'value' => 'a:16:{i:0;s:14:"assets/js/drupal.js";i:1;s:14:"assets/js/jquery.js";i:2;s:19:"assets/js/jquery.once.js";s:10:"refresh:ca";s:7:"waiting";i:3;s:29:"assets/js/ui/jquery.ui.core.min.js";i:4;s:21:"assets/js/jquery.ba-bbq.js";i:5;s:33:"modules/overlay/overlay-parent.js";i:6;s:32:"modules/contextual/contextual.js";i:7;s:21:"assets/js/jquery.cookie.js";i:8;s:26:"modules/toolbar/toolbar.js";i:9;s:32:"modules/overlay/overlay-child.js";i:10;s:19:"assets/js/tableheader.js";i:11;s:17:"assets/js/tabledrag.js";i:12;s:12:"assets/js/form.js";i:13;s:16:"assets/js/collapse.js";s:10:"refresh:cv";s:7:"waiting";}',
 ))
 ->values(array(
   'name' => 'language_count',
diff --git a/core/themes/classy/templates/layout/book-export-html.html.twig b/core/themes/classy/templates/layout/book-export-html.html.twig
index 95b53d9..b4d7695 100644
--- a/core/themes/classy/templates/layout/book-export-html.html.twig
+++ b/core/themes/classy/templates/layout/book-export-html.html.twig
@@ -22,7 +22,7 @@
     <title>{{ title }}</title>
     {{ page.head }}
     <base href="{{ base_url }}" />
-    <link type="text/css" rel="stylesheet" href="misc/print.css" />
+    <link type="text/css" rel="stylesheet" href="assets/css/print.css" />
   </head>
   <body>
     {#
diff --git a/core/themes/seven/css/components/vertical-tabs.css b/core/themes/seven/css/components/vertical-tabs.css
index d42da4a..b4b1914 100644
--- a/core/themes/seven/css/components/vertical-tabs.css
+++ b/core/themes/seven/css/components/vertical-tabs.css
@@ -1,6 +1,6 @@
 /**
  * @file
- * Override of misc/vertical-tabs.css.
+ * Override of assets/css/vertical-tabs.css.
  */
 
 .vertical-tabs {