wp/wp-includes/script-loader.php
changeset 7 cf61fcea0001
parent 5 5e2f62d02dcd
child 9 177826044cd9
--- a/wp/wp-includes/script-loader.php	Tue Jun 09 11:14:17 2015 +0000
+++ b/wp/wp-includes/script-loader.php	Mon Oct 14 17:39:30 2019 +0200
@@ -2,11 +2,6 @@
 /**
  * WordPress scripts and styles default loader.
  *
- * Most of the functionality that existed here was moved to
- * {@link http://backpress.automattic.com/ BackPress}. WordPress themes and
- * plugins will only be concerned about the filters and actions set in this
- * file.
- *
  * Several constants are used to manage the loading, concatenating and compression of scripts and CSS:
  * define('SCRIPT_DEBUG', true); loads the development (non-minified) versions of all scripts and CSS, and disables compression and concatenation,
  * define('CONCATENATE_SCRIPTS', false); disables compression and concatenation of scripts and CSS,
@@ -21,31 +16,34 @@
  * @package WordPress
  */
 
-/** BackPress: WordPress Dependencies Class */
+/** WordPress Dependency Class */
+require( ABSPATH . WPINC . '/class-wp-dependency.php' );
+
+/** WordPress Dependencies Class */
 require( ABSPATH . WPINC . '/class.wp-dependencies.php' );
 
-/** BackPress: WordPress Scripts Class */
+/** WordPress Scripts Class */
 require( ABSPATH . WPINC . '/class.wp-scripts.php' );
 
-/** BackPress: WordPress Scripts Functions */
+/** WordPress Scripts Functions */
 require( ABSPATH . WPINC . '/functions.wp-scripts.php' );
 
-/** BackPress: WordPress Styles Class */
+/** WordPress Styles Class */
 require( ABSPATH . WPINC . '/class.wp-styles.php' );
 
-/** BackPress: WordPress Styles Functions */
+/** WordPress Styles Functions */
 require( ABSPATH . WPINC . '/functions.wp-styles.php' );
 
 /**
  * Register all WordPress scripts.
  *
  * Localizes some of them.
- * args order: $scripts->add( 'handle', 'url', 'dependencies', 'query-string', 1 );
+ * args order: `$scripts->add( 'handle', 'url', 'dependencies', 'query-string', 1 );`
  * when last arg === 1 queues the script for the footer
  *
  * @since 2.6.0
  *
- * @param object $scripts WP_Scripts object.
+ * @param WP_Scripts $scripts WP_Scripts object.
  */
 function wp_default_scripts( &$scripts ) {
 	include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version
@@ -79,8 +77,10 @@
 
 	$scripts->add( 'common', "/wp-admin/js/common$suffix.js", array('jquery', 'hoverIntent', 'utils'), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'common', 'commonL10n', array(
-		'warnDelete' => __( "You are about to permanently delete the selected items.\n  'Cancel' to stop, 'OK' to delete." ),
-		'dismiss'    => __( 'Dismiss this notice.' ),
+		'warnDelete'   => __( "You are about to permanently delete these items from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ),
+		'dismiss'      => __( 'Dismiss this notice.' ),
+		'collapseMenu' => __( 'Collapse Main menu' ),
+		'expandMenu'   => __( 'Expand Main menu' ),
 	) );
 
 	$scripts->add( 'wp-a11y', "/wp-includes/js/wp-a11y$suffix.js", array( 'jquery' ), false, 1 );
@@ -89,28 +89,56 @@
 
 	$scripts->add( 'quicktags', "/wp-includes/js/quicktags$suffix.js", array(), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'quicktags', 'quicktagsL10n', array(
-		'closeAllOpenTags'      => esc_attr__( 'Close all open tags' ),
-		'closeTags'             => esc_attr__( 'close tags' ),
+		'closeAllOpenTags'      => __( 'Close all open tags' ),
+		'closeTags'             => __( 'close tags' ),
 		'enterURL'              => __( 'Enter the URL' ),
 		'enterImageURL'         => __( 'Enter the URL of the image' ),
 		'enterImageDescription' => __( 'Enter a description of the image' ),
-		'fullscreen'            => __( 'fullscreen' ),
-		'toggleFullscreen'      => esc_attr__( 'Toggle fullscreen mode' ),
-		'textdirection'         => esc_attr__( 'text direction' ),
-		'toggleTextdirection'   => esc_attr__( 'Toggle Editor Text Direction' ),
-		'dfw'                   => esc_attr__( 'Distraction-free writing mode' )
+		'textdirection'         => __( 'text direction' ),
+		'toggleTextdirection'   => __( 'Toggle Editor Text Direction' ),
+		'dfw'                   => __( 'Distraction-free writing mode' ),
+		'strong'          => __( 'Bold' ),
+		'strongClose'     => __( 'Close bold tag' ),
+		'em'              => __( 'Italic' ),
+		'emClose'         => __( 'Close italic tag' ),
+		'link'            => __( 'Insert link' ),
+		'blockquote'      => __( 'Blockquote' ),
+		'blockquoteClose' => __( 'Close blockquote tag' ),
+		'del'             => __( 'Deleted text (strikethrough)' ),
+		'delClose'        => __( 'Close deleted text tag' ),
+		'ins'             => __( 'Inserted text' ),
+		'insClose'        => __( 'Close inserted text tag' ),
+		'image'           => __( 'Insert image' ),
+		'ul'              => __( 'Bulleted list' ),
+		'ulClose'         => __( 'Close bulleted list tag' ),
+		'ol'              => __( 'Numbered list' ),
+		'olClose'         => __( 'Close numbered list tag' ),
+		'li'              => __( 'List item' ),
+		'liClose'         => __( 'Close list item tag' ),
+		'code'            => __( 'Code' ),
+		'codeClose'       => __( 'Close code tag' ),
+		'more'            => __( 'Insert Read More tag' ),
 	) );
 
 	$scripts->add( 'colorpicker', "/wp-includes/js/colorpicker$suffix.js", array('prototype'), '3517m' );
 
 	$scripts->add( 'editor', "/wp-admin/js/editor$suffix.js", array('utils','jquery'), false, 1 );
 
-	$scripts->add( 'wp-fullscreen', "/wp-admin/js/wp-fullscreen$suffix.js", array('jquery'), false, 1 );
+	// Back-compat for old DFW. To-do: remove at the end of 2016.
+	$scripts->add( 'wp-fullscreen-stub', "/wp-admin/js/wp-fullscreen-stub$suffix.js", array(), false, 1 );
 
 	$scripts->add( 'wp-ajax-response', "/wp-includes/js/wp-ajax-response$suffix.js", array('jquery'), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'wp-ajax-response', 'wpAjax', array(
-		'noPerm' => __('You do not have permission to do that.'),
-		'broken' => __('An unidentified error has occurred.')
+		'noPerm' => __('Sorry, you are not allowed to do that.'),
+		'broken' => __('Something went wrong.')
+	) );
+
+	$scripts->add( 'wp-api-request', "/wp-includes/js/api-request$suffix.js", array( 'jquery' ), false, 1 );
+	// `wpApiSettings` is also used by `wp-api`, which depends on this script.
+	did_action( 'init' ) && $scripts->localize( 'wp-api-request', 'wpApiSettings', array(
+		'root'          => esc_url_raw( get_rest_url() ),
+		'nonce'         => ( wp_installing() && ! is_multisite() ) ? '' : wp_create_nonce( 'wp_rest' ),
+		'versionString' => 'wp/v2/',
 	) );
 
 	$scripts->add( 'wp-pointer', "/wp-includes/js/wp-pointer$suffix.js", array( 'jquery-ui-widget', 'jquery-ui-position' ), '20111129a', 1 );
@@ -123,7 +151,7 @@
 	$scripts->add( 'heartbeat', "/wp-includes/js/heartbeat$suffix.js", array('jquery'), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'heartbeat', 'heartbeatSettings',
 		/**
-		 * Filter the Heartbeat settings.
+		 * Filters the Heartbeat settings.
 		 *
 		 * @since 3.6.0
 		 *
@@ -137,7 +165,7 @@
 		'beforeunload' => __('Your session has expired. You can log in again from this page or go to the login page.'),
 
 		/**
-		 * Filter the authentication check interval.
+		 * Filters the authentication check interval.
 		 *
 		 * @since 3.6.0
 		 *
@@ -150,23 +178,23 @@
 	$scripts->add( 'wp-lists', "/wp-includes/js/wp-lists$suffix.js", array( 'wp-ajax-response', 'jquery-color' ), false, 1 );
 
 	// WordPress no longer uses or bundles Prototype or script.aculo.us. These are now pulled from an external source.
-	$scripts->add( 'prototype', '//ajax.googleapis.com/ajax/libs/prototype/1.7.1.0/prototype.js', array(), '1.7.1');
-	$scripts->add( 'scriptaculous-root', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/scriptaculous.js', array('prototype'), '1.9.0');
-	$scripts->add( 'scriptaculous-builder', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/builder.js', array('scriptaculous-root'), '1.9.0');
-	$scripts->add( 'scriptaculous-dragdrop', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/dragdrop.js', array('scriptaculous-builder', 'scriptaculous-effects'), '1.9.0');
-	$scripts->add( 'scriptaculous-effects', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/effects.js', array('scriptaculous-root'), '1.9.0');
-	$scripts->add( 'scriptaculous-slider', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/slider.js', array('scriptaculous-effects'), '1.9.0');
-	$scripts->add( 'scriptaculous-sound', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/sound.js', array( 'scriptaculous-root' ), '1.9.0' );
-	$scripts->add( 'scriptaculous-controls', '//ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/controls.js', array('scriptaculous-root'), '1.9.0');
+	$scripts->add( 'prototype', 'https://ajax.googleapis.com/ajax/libs/prototype/1.7.1.0/prototype.js', array(), '1.7.1');
+	$scripts->add( 'scriptaculous-root', 'https://ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/scriptaculous.js', array('prototype'), '1.9.0');
+	$scripts->add( 'scriptaculous-builder', 'https://ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/builder.js', array('scriptaculous-root'), '1.9.0');
+	$scripts->add( 'scriptaculous-dragdrop', 'https://ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/dragdrop.js', array('scriptaculous-builder', 'scriptaculous-effects'), '1.9.0');
+	$scripts->add( 'scriptaculous-effects', 'https://ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/effects.js', array('scriptaculous-root'), '1.9.0');
+	$scripts->add( 'scriptaculous-slider', 'https://ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/slider.js', array('scriptaculous-effects'), '1.9.0');
+	$scripts->add( 'scriptaculous-sound', 'https://ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/sound.js', array( 'scriptaculous-root' ), '1.9.0' );
+	$scripts->add( 'scriptaculous-controls', 'https://ajax.googleapis.com/ajax/libs/scriptaculous/1.9.0/controls.js', array('scriptaculous-root'), '1.9.0');
 	$scripts->add( 'scriptaculous', false, array('scriptaculous-dragdrop', 'scriptaculous-slider', 'scriptaculous-controls') );
 
 	// not used in core, replaced by Jcrop.js
 	$scripts->add( 'cropper', '/wp-includes/js/crop/cropper.js', array('scriptaculous-dragdrop') );
 
 	// jQuery
-	$scripts->add( 'jquery', false, array( 'jquery-core', 'jquery-migrate' ), '1.11.2' );
-	$scripts->add( 'jquery-core', '/wp-includes/js/jquery/jquery.js', array(), '1.11.2' );
-	$scripts->add( 'jquery-migrate', "/wp-includes/js/jquery/jquery-migrate$suffix.js", array(), '1.2.1' );
+	$scripts->add( 'jquery', false, array( 'jquery-core', 'jquery-migrate' ), '1.12.4' );
+	$scripts->add( 'jquery-core', '/wp-includes/js/jquery/jquery.js', array(), '1.12.4' );
+	$scripts->add( 'jquery-migrate', "/wp-includes/js/jquery/jquery-migrate$suffix.js", array(), '1.4.1' );
 
 	// full jQuery UI
 	$scripts->add( 'jquery-ui-core', "/wp-includes/js/jquery/ui/core$dev_suffix.js", array('jquery'), '1.11.4', 1 );
@@ -189,7 +217,7 @@
 	$scripts->add( 'jquery-effects-transfer', "/wp-includes/js/jquery/ui/effect-transfer$dev_suffix.js", array('jquery-effects-core'), '1.11.4', 1 );
 
 	$scripts->add( 'jquery-ui-accordion', "/wp-includes/js/jquery/ui/accordion$dev_suffix.js", array('jquery-ui-core', 'jquery-ui-widget'), '1.11.4', 1 );
-	$scripts->add( 'jquery-ui-autocomplete', "/wp-includes/js/jquery/ui/autocomplete$dev_suffix.js", array('jquery-ui-menu'), '1.11.4', 1 );
+	$scripts->add( 'jquery-ui-autocomplete', "/wp-includes/js/jquery/ui/autocomplete$dev_suffix.js", array( 'jquery-ui-menu', 'wp-a11y' ), '1.11.4', 1 );
 	$scripts->add( 'jquery-ui-button', "/wp-includes/js/jquery/ui/button$dev_suffix.js", array('jquery-ui-core', 'jquery-ui-widget'), '1.11.4', 1 );
 	$scripts->add( 'jquery-ui-datepicker', "/wp-includes/js/jquery/ui/datepicker$dev_suffix.js", array('jquery-ui-core'), '1.11.4', 1 );
 	$scripts->add( 'jquery-ui-dialog', "/wp-includes/js/jquery/ui/dialog$dev_suffix.js", array('jquery-ui-resizable', 'jquery-ui-draggable', 'jquery-ui-button', 'jquery-ui-position'), '1.11.4', 1 );
@@ -209,12 +237,21 @@
 	$scripts->add( 'jquery-ui-tooltip', "/wp-includes/js/jquery/ui/tooltip$dev_suffix.js", array( 'jquery-ui-core', 'jquery-ui-widget', 'jquery-ui-position' ), '1.11.4', 1 );
 	$scripts->add( 'jquery-ui-widget', "/wp-includes/js/jquery/ui/widget$dev_suffix.js", array('jquery'), '1.11.4', 1 );
 
+	// Strings for 'jquery-ui-autocomplete' live region messages
+	did_action( 'init' ) && $scripts->localize( 'jquery-ui-autocomplete', 'uiAutocompleteL10n', array(
+		'noResults' => __( 'No results found.' ),
+		/* translators: Number of results found when using jQuery UI Autocomplete */
+		'oneResult' => __( '1 result found. Use up and down arrow keys to navigate.' ),
+		/* translators: %d: Number of results found when using jQuery UI Autocomplete */
+		'manyResults' => __( '%d results found. Use up and down arrow keys to navigate.' ),
+		'itemSelected' => __( 'Item selected.' ),
+	) );
+
 	// deprecated, not used in core, most functionality is included in jQuery 1.3
-	$scripts->add( 'jquery-form', "/wp-includes/js/jquery/jquery.form$suffix.js", array('jquery'), '3.37.0', 1 );
+	$scripts->add( 'jquery-form', "/wp-includes/js/jquery/jquery.form$suffix.js", array('jquery'), '4.2.1', 1 );
 
 	// jQuery plugins
 	$scripts->add( 'jquery-color', "/wp-includes/js/jquery/jquery.color.min.js", array('jquery'), '2.1.1', 1 );
-	$scripts->add( 'suggest', "/wp-includes/js/jquery/suggest$suffix.js", array('jquery'), '1.1-20110113', 1 );
 	$scripts->add( 'schedule', '/wp-includes/js/jquery/jquery.schedule.js', array('jquery'), '20m', 1 );
 	$scripts->add( 'jquery-query', "/wp-includes/js/jquery/jquery.query.js", array('jquery'), '2.1.7', 1 );
 	$scripts->add( 'jquery-serialize-object', "/wp-includes/js/jquery/jquery.serialize-object.js", array('jquery'), '0.2', 1 );
@@ -222,32 +259,36 @@
 	$scripts->add( 'jquery-table-hotkeys', "/wp-includes/js/jquery/jquery.table-hotkeys$suffix.js", array('jquery', 'jquery-hotkeys'), false, 1 );
 	$scripts->add( 'jquery-touch-punch', "/wp-includes/js/jquery/jquery.ui.touch-punch.js", array('jquery-ui-widget', 'jquery-ui-mouse'), '0.2.2', 1 );
 
+	// Not used any more, registered for backwards compatibility.
+	$scripts->add( 'suggest', "/wp-includes/js/jquery/suggest$suffix.js", array('jquery'), '1.1-20110113', 1 );
+
 	// Masonry v2 depended on jQuery. v3 does not. The older jquery-masonry handle is a shiv.
 	// It sets jQuery as a dependency, as the theme may have been implicitly loading it this way.
-	$scripts->add( 'masonry', "/wp-includes/js/masonry.min.js", array(), '3.1.2', 1 );
-	$scripts->add( 'jquery-masonry', "/wp-includes/js/jquery/jquery.masonry$dev_suffix.js", array( 'jquery', 'masonry' ), '3.1.2', 1 );
+	$scripts->add( 'imagesloaded', "/wp-includes/js/imagesloaded.min.js", array(), '3.2.0', 1 );
+	$scripts->add( 'masonry', "/wp-includes/js/masonry.min.js", array( 'imagesloaded' ), '3.3.2', 1 );
+	$scripts->add( 'jquery-masonry', "/wp-includes/js/jquery/jquery.masonry$dev_suffix.js", array( 'jquery', 'masonry' ), '3.1.2b', 1 );
 
 	$scripts->add( 'thickbox', "/wp-includes/js/thickbox/thickbox.js", array('jquery'), '3.1-20121105', 1 );
 	did_action( 'init' ) && $scripts->localize( 'thickbox', 'thickboxL10n', array(
-			'next' => __('Next >'),
-			'prev' => __('< Prev'),
-			'image' => __('Image'),
-			'of' => __('of'),
-			'close' => __('Close'),
-			'noiframes' => __('This feature requires inline frames. You have iframes disabled or your browser does not support them.'),
-			'loadingAnimation' => includes_url('js/thickbox/loadingAnimation.gif'),
+		'next' => __('Next >'),
+		'prev' => __('< Prev'),
+		'image' => __('Image'),
+		'of' => __('of'),
+		'close' => __('Close'),
+		'noiframes' => __('This feature requires inline frames. You have iframes disabled or your browser does not support them.'),
+		'loadingAnimation' => includes_url('js/thickbox/loadingAnimation.gif'),
 	) );
 
 	$scripts->add( 'jcrop', "/wp-includes/js/jcrop/jquery.Jcrop.min.js", array('jquery'), '0.9.12');
 
 	$scripts->add( 'swfobject', "/wp-includes/js/swfobject.js", array(), '2.2-20120417');
 
-	// error message for both plupload and swfupload
+	// Error messages for Plupload.
 	$uploader_l10n = array(
 		'queue_limit_exceeded' => __('You have attempted to queue too many files.'),
 		'file_exceeds_size_limit' => __('%s exceeds the maximum upload size for this site.'),
 		'zero_byte_file' => __('This file is empty. Please try another.'),
-		'invalid_filetype' => __('This file type is not allowed. Please try another.'),
+		'invalid_filetype' => __('Sorry, this file type is not permitted for security reasons.'),
 		'not_an_image' => __('This file is not an image. Please try another.'),
 		'image_memory_exceeded' => __('Memory exceeded. Please try another smaller file.'),
 		'image_dimensions_exceeded' => __('This is larger than the maximum size. Please try another.'),
@@ -256,6 +297,7 @@
 		'upload_limit_exceeded' => __('You may only upload 1 file.'),
 		'http_error' => __('HTTP error.'),
 		'upload_failed' => __('Upload failed.'),
+		/* translators: 1: Opening link tag, 2: Closing link tag */
 		'big_upload_failed' => __('Please try uploading this file with the %1$sbrowser uploader%2$s.'),
 		'big_upload_queued' => __('%s exceeds the maximum upload size for the multi-file uploader when used in your browser.'),
 		'io_error' => __('IO error.'),
@@ -268,7 +310,8 @@
 		'error_uploading' => __('“%s” has failed to upload.')
 	);
 
-	$scripts->add( 'plupload', '/wp-includes/js/plupload/plupload.full.min.js', array(), '2.1.1' );
+	$scripts->add( 'moxiejs', "/wp-includes/js/plupload/moxie$suffix.js", array(), '1.3.5' );
+	$scripts->add( 'plupload', "/wp-includes/js/plupload/plupload$suffix.js", array( 'moxiejs' ), '2.1.9' );
 	// Back compat handles:
 	foreach ( array( 'all', 'html5', 'flash', 'silverlight', 'html4' ) as $handle ) {
 		$scripts->add( "plupload-$handle", false, array( 'plupload' ), '2.1.1' );
@@ -282,20 +325,17 @@
 
 	// keep 'swfupload' for back-compat.
 	$scripts->add( 'swfupload', '/wp-includes/js/swfupload/swfupload.js', array(), '2201-20110113');
-	$scripts->add( 'swfupload-swfobject', '/wp-includes/js/swfupload/plugins/swfupload.swfobject.js', array('swfupload', 'swfobject'), '2201a');
-	$scripts->add( 'swfupload-queue', '/wp-includes/js/swfupload/plugins/swfupload.queue.js', array('swfupload'), '2201');
-	$scripts->add( 'swfupload-speed', '/wp-includes/js/swfupload/plugins/swfupload.speed.js', array('swfupload'), '2201');
-	$scripts->add( 'swfupload-all', false, array('swfupload', 'swfupload-swfobject', 'swfupload-queue'), '2201');
+	$scripts->add( 'swfupload-all', false, array( 'swfupload' ), '2201' );
 	$scripts->add( 'swfupload-handlers', "/wp-includes/js/swfupload/handlers$suffix.js", array('swfupload-all', 'jquery'), '2201-20110524');
 	did_action( 'init' ) && $scripts->localize( 'swfupload-handlers', 'swfuploadL10n', $uploader_l10n );
 
 	$scripts->add( 'comment-reply', "/wp-includes/js/comment-reply$suffix.js", array(), false, 1 );
 
-	$scripts->add( 'json2', "/wp-includes/js/json2$suffix.js", array(), '2011-02-23' );
+	$scripts->add( 'json2', "/wp-includes/js/json2$suffix.js", array(), '2015-05-03' );
 	did_action( 'init' ) && $scripts->add_data( 'json2', 'conditional', 'lt IE 8' );
 
-	$scripts->add( 'underscore', "/wp-includes/js/underscore$dev_suffix.js", array(), '1.6.0', 1 );
-	$scripts->add( 'backbone', "/wp-includes/js/backbone$dev_suffix.js", array( 'underscore','jquery' ), '1.1.2', 1 );
+	$scripts->add( 'underscore', "/wp-includes/js/underscore$dev_suffix.js", array(), '1.8.3', 1 );
+	$scripts->add( 'backbone', "/wp-includes/js/backbone$dev_suffix.js", array( 'underscore','jquery' ), '1.2.3', 1 );
 
 	$scripts->add( 'wp-util', "/wp-includes/js/wp-util$suffix.js", array('underscore', 'jquery'), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'wp-util', '_wpUtilSettings', array(
@@ -304,39 +344,147 @@
 		),
 	) );
 
+	$scripts->add( 'wp-sanitize', "/wp-includes/js/wp-sanitize$suffix.js", array('jquery'), false, 1 );
+
 	$scripts->add( 'wp-backbone', "/wp-includes/js/wp-backbone$suffix.js", array('backbone', 'wp-util'), false, 1 );
 
 	$scripts->add( 'revisions', "/wp-admin/js/revisions$suffix.js", array( 'wp-backbone', 'jquery-ui-slider', 'hoverIntent' ), false, 1 );
 
-	$scripts->add( 'imgareaselect', "/wp-includes/js/imgareaselect/jquery.imgareaselect$suffix.js", array('jquery'), '0.9.10', 1 );
+	$scripts->add( 'imgareaselect', "/wp-includes/js/imgareaselect/jquery.imgareaselect$suffix.js", array('jquery'), false, 1 );
 
-	$scripts->add( 'mediaelement', "/wp-includes/js/mediaelement/mediaelement-and-player.min.js", array('jquery'), '2.16.2', 1 );
-	did_action( 'init' ) && $scripts->localize( 'mediaelement', 'mejsL10n', array(
-		'language' => get_bloginfo( 'language' ),
+	$scripts->add( 'mediaelement', false, array( 'jquery', 'mediaelement-core', 'mediaelement-migrate' ), '4.2.6-78496d1' );
+	$scripts->add( 'mediaelement-core', "/wp-includes/js/mediaelement/mediaelement-and-player$suffix.js", array(), '4.2.6-78496d1', 1 );
+	$scripts->add( 'mediaelement-migrate', "/wp-includes/js/mediaelement/mediaelement-migrate$suffix.js", array(), false, 1);
+
+	did_action( 'init' ) && $scripts->add_inline_script( 'mediaelement-core', sprintf( 'var mejsL10n = %s;', wp_json_encode( array(
+		'language' => strtolower( strtok( is_admin() ? get_user_locale() : get_locale(), '_-' ) ),
 		'strings'  => array(
-			'Close'               => __( 'Close' ),
-			'Fullscreen'          => __( 'Fullscreen' ),
-			'Download File'       => __( 'Download File' ),
-			'Download Video'      => __( 'Download Video' ),
-			'Play/Pause'          => __( 'Play/Pause' ),
-			'Mute Toggle'         => __( 'Mute Toggle' ),
-			'None'                => __( 'None' ),
-			'Turn off Fullscreen' => __( 'Turn off Fullscreen' ),
-			'Go Fullscreen'       => __( 'Go Fullscreen' ),
-			'Unmute'              => __( 'Unmute' ),
-			'Mute'                => __( 'Mute' ),
-			'Captions/Subtitles'  => __( 'Captions/Subtitles' )
-		),
-	) );
+			'mejs.install-flash'       => __( 'You are using a browser that does not have Flash player enabled or installed. Please turn on your Flash player plugin or download the latest version from https://get.adobe.com/flashplayer/' ),
+			'mejs.fullscreen-off'      => __( 'Turn off Fullscreen' ),
+			'mejs.fullscreen-on'       => __( 'Go Fullscreen' ),
+			'mejs.download-video'      => __( 'Download Video' ),
+			'mejs.fullscreen'          => __( 'Fullscreen' ),
+			'mejs.time-jump-forward'   => array( __( 'Jump forward 1 second' ), __( 'Jump forward %1 seconds' ) ),
+			'mejs.loop'                => __( 'Toggle Loop' ),
+			'mejs.play'                => __( 'Play' ),
+			'mejs.pause'               => __( 'Pause' ),
+			'mejs.close'               => __( 'Close' ),
+			'mejs.time-slider'         => __( 'Time Slider' ),
+			'mejs.time-help-text'      => __( 'Use Left/Right Arrow keys to advance one second, Up/Down arrows to advance ten seconds.' ),
+			'mejs.time-skip-back'      => array( __( 'Skip back 1 second' ), __( 'Skip back %1 seconds' ) ),
+			'mejs.captions-subtitles'  => __( 'Captions/Subtitles' ),
+			'mejs.captions-chapters'   => __( 'Chapters' ),
+			'mejs.none'                => __( 'None' ),
+			'mejs.mute-toggle'         => __( 'Mute Toggle' ),
+			'mejs.volume-help-text'    => __( 'Use Up/Down Arrow keys to increase or decrease volume.' ),
+			'mejs.unmute'              => __( 'Unmute' ),
+			'mejs.mute'                => __( 'Mute' ),
+			'mejs.volume-slider'       => __( 'Volume Slider' ),
+			'mejs.video-player'        => __( 'Video Player' ),
+			'mejs.audio-player'        => __( 'Audio Player' ),
+			'mejs.ad-skip'             => __( 'Skip ad' ),
+			'mejs.ad-skip-info'        => array( __( 'Skip in 1 second' ), __( 'Skip in %1 seconds' ) ),
+			'mejs.source-chooser'      => __( 'Source Chooser' ),
+			'mejs.stop'                => __( 'Stop' ),
+			'mejs.speed-rate'          => __( 'Speed Rate' ),
+			'mejs.live-broadcast'      => __( 'Live Broadcast' ),
+			'mejs.afrikaans'           => __( 'Afrikaans' ),
+			'mejs.albanian'            => __( 'Albanian' ),
+			'mejs.arabic'              => __( 'Arabic' ),
+			'mejs.belarusian'          => __( 'Belarusian' ),
+			'mejs.bulgarian'           => __( 'Bulgarian' ),
+			'mejs.catalan'             => __( 'Catalan' ),
+			'mejs.chinese'             => __( 'Chinese' ),
+			'mejs.chinese-simplified'  => __( 'Chinese (Simplified)' ),
+			'mejs.chinese-traditional' => __( 'Chinese (Traditional)' ),
+			'mejs.croatian'            => __( 'Croatian' ),
+			'mejs.czech'               => __( 'Czech' ),
+			'mejs.danish'              => __( 'Danish' ),
+			'mejs.dutch'               => __( 'Dutch' ),
+			'mejs.english'             => __( 'English' ),
+			'mejs.estonian'            => __( 'Estonian' ),
+			'mejs.filipino'            => __( 'Filipino' ),
+			'mejs.finnish'             => __( 'Finnish' ),
+			'mejs.french'              => __( 'French' ),
+			'mejs.galician'            => __( 'Galician' ),
+			'mejs.german'              => __( 'German' ),
+			'mejs.greek'               => __( 'Greek' ),
+			'mejs.haitian-creole'      => __( 'Haitian Creole' ),
+			'mejs.hebrew'              => __( 'Hebrew' ),
+			'mejs.hindi'               => __( 'Hindi' ),
+			'mejs.hungarian'           => __( 'Hungarian' ),
+			'mejs.icelandic'           => __( 'Icelandic' ),
+			'mejs.indonesian'          => __( 'Indonesian' ),
+			'mejs.irish'               => __( 'Irish' ),
+			'mejs.italian'             => __( 'Italian' ),
+			'mejs.japanese'            => __( 'Japanese' ),
+			'mejs.korean'              => __( 'Korean' ),
+			'mejs.latvian'             => __( 'Latvian' ),
+			'mejs.lithuanian'          => __( 'Lithuanian' ),
+			'mejs.macedonian'          => __( 'Macedonian' ),
+			'mejs.malay'               => __( 'Malay' ),
+			'mejs.maltese'             => __( 'Maltese' ),
+			'mejs.norwegian'           => __( 'Norwegian' ),
+			'mejs.persian'             => __( 'Persian' ),
+			'mejs.polish'              => __( 'Polish' ),
+			'mejs.portuguese'          => __( 'Portuguese' ),
+			'mejs.romanian'            => __( 'Romanian' ),
+			'mejs.russian'             => __( 'Russian' ),
+			'mejs.serbian'             => __( 'Serbian' ),
+			'mejs.slovak'              => __( 'Slovak' ),
+			'mejs.slovenian'           => __( 'Slovenian' ),
+			'mejs.spanish'             => __( 'Spanish' ),
+			'mejs.swahili'             => __( 'Swahili' ),
+			'mejs.swedish'             => __( 'Swedish' ),
+			'mejs.tagalog'             => __( 'Tagalog' ),
+			'mejs.thai'                => __( 'Thai' ),
+			'mejs.turkish'             => __( 'Turkish' ),
+			'mejs.ukrainian'           => __( 'Ukrainian' ),
+			'mejs.vietnamese'          => __( 'Vietnamese' ),
+			'mejs.welsh'               => __( 'Welsh' ),
+			'mejs.yiddish'             => __( 'Yiddish' ),
+			),
+		) ) ), 'before' );
 
 
-	$scripts->add( 'wp-mediaelement', "/wp-includes/js/mediaelement/wp-mediaelement.js", array('mediaelement'), false, 1 );
-	did_action( 'init' ) && $scripts->localize( 'mediaelement', '_wpmejsSettings', array(
-		'pluginPath' => includes_url( 'js/mediaelement/', 'relative' ),
-	) );
+	$scripts->add( 'mediaelement-vimeo', "/wp-includes/js/mediaelement/renderers/vimeo.min.js", array('mediaelement'), '4.2.6-78496d1', 1 );
+	$scripts->add( 'wp-mediaelement', "/wp-includes/js/mediaelement/wp-mediaelement$suffix.js", array('mediaelement'), false, 1 );
+	$mejs_settings = array(
+		'pluginPath'    => includes_url( 'js/mediaelement/', 'relative' ),
+		'classPrefix'   => 'mejs-',
+		'stretching'    => 'responsive',
+	);
+	did_action( 'init' ) && $scripts->localize( 'mediaelement', '_wpmejsSettings',
+		/**
+		 * Filters the MediaElement configuration settings.
+		 *
+		 * @since 4.4.0
+		 *
+		 * @param array $mejs_settings MediaElement settings array.
+		 */
+		apply_filters( 'mejs_settings', $mejs_settings )
+	);
 
-	$scripts->add( 'froogaloop',  "/wp-includes/js/mediaelement/froogaloop.min.js", array(), '2.0' );
-	$scripts->add( 'wp-playlist', "/wp-includes/js/mediaelement/wp-playlist.js", array( 'wp-util', 'backbone', 'mediaelement' ), false, 1 );
+	$scripts->add( 'wp-codemirror', '/wp-includes/js/codemirror/codemirror.min.js', array(), '5.29.1-alpha-ee20357' );
+	$scripts->add( 'csslint', '/wp-includes/js/codemirror/csslint.js', array(), '1.0.5' );
+	$scripts->add( 'jshint', '/wp-includes/js/codemirror/jshint.js', array(), '2.9.5.999' );
+	$scripts->add( 'jsonlint', '/wp-includes/js/codemirror/jsonlint.js', array(), '1.6.2' );
+	$scripts->add( 'htmlhint', '/wp-includes/js/codemirror/htmlhint.js', array(), '0.9.14-xwp' );
+	$scripts->add( 'htmlhint-kses', '/wp-includes/js/codemirror/htmlhint-kses.js', array( 'htmlhint' ) );
+	$scripts->add( 'code-editor', "/wp-admin/js/code-editor$suffix.js", array( 'jquery', 'wp-codemirror', 'underscore' ) );
+	$scripts->add( 'wp-theme-plugin-editor', "/wp-admin/js/theme-plugin-editor$suffix.js", array( 'wp-util', 'wp-sanitize', 'jquery', 'jquery-ui-core', 'wp-a11y', 'underscore' ) );
+	did_action( 'init' ) && $scripts->add_inline_script( 'wp-theme-plugin-editor', sprintf( 'wp.themePluginEditor.l10n = %s;', wp_json_encode( array(
+		'saveAlert' => __( 'The changes you made will be lost if you navigate away from this page.' ),
+		'saveError' => __( 'Something went wrong. Your change may not have been saved. Please try again. There is also a chance that you may need to manually fix and upload the file over FTP.' ),
+		'lintError' => array(
+			/* translators: %d: error count */
+			'singular' => _n( 'There is %d error which must be fixed before you can update this file.', 'There are %d errors which must be fixed before you can update this file.', 1 ),
+			/* translators: %d: error count */
+			'plural' => _n( 'There is %d error which must be fixed before you can update this file.', 'There are %d errors which must be fixed before you can update this file.', 2 ), // @todo This is lacking, as some languages have a dedicated dual form. For proper handling of plurals in JS, see #20491.
+		),
+	) ) ) );
+
+	$scripts->add( 'wp-playlist', "/wp-includes/js/mediaelement/wp-playlist$suffix.js", array( 'wp-util', 'backbone', 'mediaelement' ), false, 1 );
 
 	$scripts->add( 'zxcvbn-async', "/wp-includes/js/zxcvbn-async$suffix.js", array(), '1.0' );
 	did_action( 'init' ) && $scripts->localize( 'zxcvbn-async', '_zxcvbnSettings', array(
@@ -345,67 +493,128 @@
 
 	$scripts->add( 'password-strength-meter', "/wp-admin/js/password-strength-meter$suffix.js", array( 'jquery', 'zxcvbn-async' ), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'password-strength-meter', 'pwsL10n', array(
-		'empty' => __('Strength indicator'),
-		'short' => __('Very weak'),
-		'bad' => __('Weak'),
-		/* translators: password strength */
-		'good' => _x('Medium', 'password strength'),
-		'strong' => __('Strong'),
-		'mismatch' => __('Mismatch')
+		'unknown'  => _x( 'Password strength unknown', 'password strength' ),
+		'short'    => _x( 'Very weak', 'password strength' ),
+		'bad'      => _x( 'Weak', 'password strength' ),
+		'good'     => _x( 'Medium', 'password strength' ),
+		'strong'   => _x( 'Strong', 'password strength' ),
+		'mismatch' => _x( 'Mismatch', 'password mismatch' ),
 	) );
 
 	$scripts->add( 'user-profile', "/wp-admin/js/user-profile$suffix.js", array( 'jquery', 'password-strength-meter', 'wp-util' ), false, 1 );
+	did_action( 'init' ) && $scripts->localize( 'user-profile', 'userProfileL10n', array(
+		'warn'     => __( 'Your new password has not been saved.' ),
+		'warnWeak' => __( 'Confirm use of weak password' ),
+		'show'     => __( 'Show' ),
+		'hide'     => __( 'Hide' ),
+		'cancel'   => __( 'Cancel' ),
+		'ariaShow' => esc_attr__( 'Show password' ),
+		'ariaHide' => esc_attr__( 'Hide password' ),
+	) );
+
 	$scripts->add( 'language-chooser', "/wp-admin/js/language-chooser$suffix.js", array( 'jquery' ), false, 1 );
 
 	$scripts->add( 'user-suggest', "/wp-admin/js/user-suggest$suffix.js", array( 'jquery-ui-autocomplete' ), false, 1 );
 
 	$scripts->add( 'admin-bar', "/wp-includes/js/admin-bar$suffix.js", array(), false, 1 );
 
-	$scripts->add( 'wplink', "/wp-includes/js/wplink$suffix.js", array( 'jquery' ), false, 1 );
+	$scripts->add( 'wplink', "/wp-includes/js/wplink$suffix.js", array( 'jquery', 'wp-a11y' ), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'wplink', 'wpLinkL10n', array(
 		'title' => __('Insert/edit link'),
 		'update' => __('Update'),
 		'save' => __('Add Link'),
 		'noTitle' => __('(no title)'),
-		'noMatchesFound' => __('No results found.')
+		'noMatchesFound' => __('No results found.'),
+		'linkSelected' => __( 'Link selected.' ),
+		'linkInserted' => __( 'Link inserted.' ),
 	) );
 
 	$scripts->add( 'wpdialogs', "/wp-includes/js/wpdialog$suffix.js", array( 'jquery-ui-dialog' ), false, 1 );
 
-	$scripts->add( 'word-count', "/wp-admin/js/word-count$suffix.js", array( 'jquery' ), false, 1 );
-	did_action( 'init' ) && $scripts->localize( 'word-count', 'wordCountL10n', array(
-		/* translators: If your word count is based on single characters (East Asian characters),
-		   enter 'characters'. Otherwise, enter 'words'. Do not translate into your own language. */
-		'type' => 'characters' == _x( 'words', 'word count: words or characters?' ) ? 'c' : 'w',
-	) );
+	$scripts->add( 'word-count', "/wp-admin/js/word-count$suffix.js", array(), false, 1 );
 
 	$scripts->add( 'media-upload', "/wp-admin/js/media-upload$suffix.js", array( 'thickbox', 'shortcode' ), false, 1 );
 
 	$scripts->add( 'hoverIntent', "/wp-includes/js/hoverIntent$suffix.js", array('jquery'), '1.8.1', 1 );
 
-	$scripts->add( 'customize-base',     "/wp-includes/js/customize-base$suffix.js",     array( 'jquery', 'json2', 'underscore', 'wp-a11y' ), false, 1 );
+	$scripts->add( 'customize-base',     "/wp-includes/js/customize-base$suffix.js",     array( 'jquery', 'json2', 'underscore' ), false, 1 );
 	$scripts->add( 'customize-loader',   "/wp-includes/js/customize-loader$suffix.js",   array( 'customize-base' ), false, 1 );
-	$scripts->add( 'customize-preview',  "/wp-includes/js/customize-preview$suffix.js",  array( 'customize-base' ), false, 1 );
+	$scripts->add( 'customize-preview',  "/wp-includes/js/customize-preview$suffix.js",  array( 'wp-a11y', 'customize-base' ), false, 1 );
 	$scripts->add( 'customize-models',   "/wp-includes/js/customize-models.js", array( 'underscore', 'backbone' ), false, 1 );
-	$scripts->add( 'customize-views',    "/wp-includes/js/customize-views.js",  array( 'jquery', 'underscore', 'imgareaselect', 'customize-models' ), false, 1 );
-	$scripts->add( 'customize-controls', "/wp-admin/js/customize-controls$suffix.js", array( 'customize-base' ), false, 1 );
+	$scripts->add( 'customize-views',    "/wp-includes/js/customize-views.js",  array( 'jquery', 'underscore', 'imgareaselect', 'customize-models', 'media-editor', 'media-views' ), false, 1 );
+	$scripts->add( 'customize-controls', "/wp-admin/js/customize-controls$suffix.js", array( 'customize-base', 'wp-a11y', 'wp-util', 'jquery-ui-core' ), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'customize-controls', '_wpCustomizeControlsL10n', array(
-		'activate'           => __( 'Save & Activate' ),
-		'save'               => __( 'Save & Publish' ),
+		'activate'           => __( 'Activate & Publish' ),
+		'save'               => __( 'Save & Publish' ), // @todo Remove as not required.
+		'publish'            => __( 'Publish' ),
+		'published'          => __( 'Published' ),
+		'saveDraft'          => __( 'Save Draft' ),
+		'draftSaved'         => __( 'Draft Saved' ),
+		'updating'           => __( 'Updating' ),
+		'schedule'           => _x( 'Schedule', 'customizer changeset action/button label' ),
+		'scheduled'          => _x( 'Scheduled', 'customizer changeset status' ),
+		'invalid'            => __( 'Invalid' ),
+		'saveBeforeShare'    => __( 'Please save your changes in order to share the preview.' ),
+		'futureDateError'    => __( 'You must supply a future date to schedule.' ),
 		'saveAlert'          => __( 'The changes you made will be lost if you navigate away from this page.' ),
 		'saved'              => __( 'Saved' ),
 		'cancel'             => __( 'Cancel' ),
 		'close'              => __( 'Close' ),
-		'cheatin'            => __( 'Cheatin’ uh?' ),
+		'action'             => __( 'Action' ),
+		'discardChanges'     => __( 'Discard changes' ),
+		'cheatin'            => __( 'Something went wrong.' ),
+		'notAllowedHeading'  => __( 'You need a higher level of permission.' ),
+		'notAllowed'         => __( 'Sorry, you are not allowed to customize this site.' ),
 		'previewIframeTitle' => __( 'Site Preview' ),
 		'loginIframeTitle'   => __( 'Session expired' ),
-
+		'collapseSidebar'    => _x( 'Hide Controls', 'label for hide controls button without length constraints' ),
+		'expandSidebar'      => _x( 'Show Controls', 'label for hide controls button without length constraints' ),
+		'untitledBlogName'   => __( '(Untitled)' ),
+		'unknownRequestFail' => __( 'Looks like something’s gone wrong. Wait a couple seconds, and then try again.' ),
+		'themeDownloading'   => __( 'Downloading your new theme…' ),
+		'themePreviewWait'   => __( 'Setting up your live preview. This may take a bit.' ),
+		'revertingChanges'   => __( 'Reverting unpublished changes…' ),
+		'trashConfirm'       => __( 'Are you sure you’d like to discard your unpublished changes?' ),
+		/* translators: %s: Display name of the user who has taken over the changeset in customizer. */
+		'takenOverMessage'   => __( '%s has taken over and is currently customizing.' ),
+		/* translators: %s: URL to the Customizer to load the autosaved version */
+		'autosaveNotice'     => __( 'There is a more recent autosave of your changes than the one you are previewing. <a href="%s">Restore the autosave</a>' ),
+		'videoHeaderNotice'  => __( 'This theme doesn&#8217;t support video headers on this page. Navigate to the front page or another page that supports video headers.' ),
 		// Used for overriding the file types allowed in plupload.
-		'allowedFiles' => __( 'Allowed Files' ),
+		'allowedFiles'       => __( 'Allowed Files' ),
+		'customCssError'     => array(
+			/* translators: %d: error count */
+			'singular' => _n( 'There is %d error which must be fixed before you can save.', 'There are %d errors which must be fixed before you can save.', 1 ),
+			/* translators: %d: error count */
+			'plural'   => _n( 'There is %d error which must be fixed before you can save.', 'There are %d errors which must be fixed before you can save.', 2 ), // @todo This is lacking, as some languages have a dedicated dual form. For proper handling of plurals in JS, see #20491.
+		),
+		'pageOnFrontError' => __( 'Homepage and posts page must be different.' ),
+		'saveBlockedError' => array(
+			/* translators: %s: number of invalid settings */
+			'singular' => _n( 'Unable to save due to %s invalid setting.', 'Unable to save due to %s invalid settings.', 1 ),
+			/* translators: %s: number of invalid settings */
+			'plural'   => _n( 'Unable to save due to %s invalid setting.', 'Unable to save due to %s invalid settings.', 2 ), // @todo This is lacking, as some languages have a dedicated dual form. For proper handling of plurals in JS, see #20491.
+		),
+		'scheduleDescription' => __( 'Schedule your customization changes to publish ("go live") at a future date.' ),
+		'themePreviewUnavailable' => __( 'Sorry, you can&#8217;t preview new themes when you have changes scheduled or saved as a draft. Please publish your changes, or wait until they publish to preview new themes.' ),
+		'themeInstallUnavailable' => sprintf(
+			/* translators: %s: URL to Add Themes admin screen */
+			__( 'You won&#8217;t be able to install new themes from here yet since your install requires SFTP credentials. For now, please <a href="%s">add themes in the admin</a>.' ),
+			esc_url( admin_url( 'theme-install.php' ) )
+		),
+		'publishSettings' => __( 'Publish Settings' ),
+		'invalidDate'     => __( 'Invalid date.' ),
+		'invalidValue'    => __( 'Invalid value.' ),
 	) );
+	$scripts->add( 'customize-selective-refresh', "/wp-includes/js/customize-selective-refresh$suffix.js", array( 'jquery', 'wp-util', 'customize-preview' ), false, 1 );
 
 	$scripts->add( 'customize-widgets', "/wp-admin/js/customize-widgets$suffix.js", array( 'jquery', 'jquery-ui-sortable', 'jquery-ui-droppable', 'wp-backbone', 'customize-controls' ), false, 1 );
-	$scripts->add( 'customize-preview-widgets', "/wp-includes/js/customize-preview-widgets$suffix.js", array( 'jquery', 'wp-util', 'customize-preview' ), false, 1 );
+	$scripts->add( 'customize-preview-widgets', "/wp-includes/js/customize-preview-widgets$suffix.js", array( 'jquery', 'wp-util', 'customize-preview', 'customize-selective-refresh' ), false, 1 );
+
+	$scripts->add( 'customize-nav-menus', "/wp-admin/js/customize-nav-menus$suffix.js", array( 'jquery', 'wp-backbone', 'customize-controls', 'accordion', 'nav-menu' ), false, 1 );
+	$scripts->add( 'customize-preview-nav-menus', "/wp-includes/js/customize-preview-nav-menus$suffix.js", array( 'jquery', 'wp-util', 'customize-preview', 'customize-selective-refresh' ), false, 1 );
+
+	$scripts->add( 'wp-custom-header', "/wp-includes/js/wp-custom-header$suffix.js", array( 'wp-a11y' ), false, 1 );
 
 	$scripts->add( 'accordion', "/wp-admin/js/accordion$suffix.js", array( 'jquery' ), false, 1 );
 
@@ -418,18 +627,22 @@
 		),
 	) );
 
+	$scripts->add( 'wp-embed', "/wp-includes/js/wp-embed$suffix.js" );
+
 	// To enqueue media-views or media-editor, call wp_enqueue_media().
 	// Both rely on numerous settings, styles, and templates to operate correctly.
-	$scripts->add( 'media-views',  "/wp-includes/js/media-views$suffix.js",  array( 'utils', 'media-models', 'wp-plupload', 'jquery-ui-sortable', 'wp-mediaelement' ), false, 1 );
+	$scripts->add( 'media-views',  "/wp-includes/js/media-views$suffix.js",  array( 'utils', 'media-models', 'wp-plupload', 'jquery-ui-sortable', 'wp-mediaelement', 'wp-api-request' ), false, 1 );
 	$scripts->add( 'media-editor', "/wp-includes/js/media-editor$suffix.js", array( 'shortcode', 'media-views' ), false, 1 );
 	$scripts->add( 'media-audiovideo', "/wp-includes/js/media-audiovideo$suffix.js", array( 'media-editor' ), false, 1 );
-	$scripts->add( 'mce-view', "/wp-includes/js/mce-view$suffix.js", array( 'shortcode', 'media-models', 'media-audiovideo', 'wp-playlist' ), false, 1 );
+	$scripts->add( 'mce-view', "/wp-includes/js/mce-view$suffix.js", array( 'shortcode', 'jquery', 'media-views', 'media-audiovideo' ), false, 1 );
+
+	$scripts->add( 'wp-api', "/wp-includes/js/wp-api$suffix.js", array( 'jquery', 'backbone', 'underscore', 'wp-api-request' ), false, 1 );
 
 	if ( is_admin() ) {
 		$scripts->add( 'admin-tags', "/wp-admin/js/tags$suffix.js", array( 'jquery', 'wp-ajax-response' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'admin-tags', 'tagsl10n', array(
-			'noPerm' => __('You do not have permission to do that.'),
-			'broken' => __('An unidentified error has occurred.')
+			'noPerm' => __('Sorry, you are not allowed to do that.'),
+			'broken' => __('Something went wrong.')
 		));
 
 		$scripts->add( 'admin-comments', "/wp-admin/js/edit-comments$suffix.js", array('wp-lists', 'quicktags', 'jquery-query'), false, 1 );
@@ -437,19 +650,44 @@
 			'hotkeys_highlight_first' => isset($_GET['hotkeys_highlight_first']),
 			'hotkeys_highlight_last' => isset($_GET['hotkeys_highlight_last']),
 			'replyApprove' => __( 'Approve and Reply' ),
-			'reply' => __( 'Reply' )
+			'reply' => __( 'Reply' ),
+			'warnQuickEdit' => __( "Are you sure you want to edit this comment?\nThe changes you made will be lost." ),
+			'warnCommentChanges' => __( "Are you sure you want to do this?\nThe comment changes you made will be lost." ),
+			'docTitleComments' => __( 'Comments' ),
+			/* translators: %s: comments count */
+			'docTitleCommentsCount' => __( 'Comments (%s)' ),
 		) );
 
 		$scripts->add( 'xfn', "/wp-admin/js/xfn$suffix.js", array('jquery'), false, 1 );
+		did_action( 'init' ) && $scripts->localize(
+			'xfn', 'privacyToolsL10n', array(
+				'noDataFound'     => __( 'No personal data was found for this user.' ),
+				'foundAndRemoved' => __( 'All of the personal data found for this user was erased.' ),
+				'noneRemoved'     => __( 'Personal data was found for this user but was not erased.' ),
+				'someNotRemoved'  => __( 'Personal data was found for this user but some of the personal data found was not erased.' ),
+				'removalError'    => __( 'An error occurred while attempting to find and erase personal data.' ),
+				'noExportFile'    => __( 'No personal data export file was generated.' ),
+				'exportError'     => __( 'An error occurred while attempting to export personal data.' ),
+			)
+		);
 
 		$scripts->add( 'postbox', "/wp-admin/js/postbox$suffix.js", array('jquery-ui-sortable'), false, 1 );
-
-		$scripts->add( 'tags-box', "/wp-admin/js/tags-box$suffix.js", array( 'jquery', 'suggest' ), false, 1 );
-		did_action( 'init' ) && $scripts->localize( 'tags-box', 'tagsBoxL10n', array(
-			'tagDelimiter' => _x( ',', 'tag delimiter' ),
+		did_action( 'init' ) && $scripts->localize( 'postbox', 'postBoxL10n', array(
+			'postBoxEmptyString' => __( 'Drag boxes here' ),
 		) );
 
-		$scripts->add( 'post', "/wp-admin/js/post$suffix.js", array( 'suggest', 'wp-lists', 'postbox', 'tags-box' ), false, 1 );
+		$scripts->add( 'tags-box', "/wp-admin/js/tags-box$suffix.js", array( 'jquery', 'tags-suggest' ), false, 1 );
+
+		$scripts->add( 'tags-suggest', "/wp-admin/js/tags-suggest$suffix.js", array( 'jquery-ui-autocomplete', 'wp-a11y' ), false, 1 );
+		did_action( 'init' ) && $scripts->localize( 'tags-suggest', 'tagsSuggestL10n', array(
+			'tagDelimiter' => _x( ',', 'tag delimiter' ),
+			'removeTerm'   => __( 'Remove term:' ),
+			'termSelected' => __( 'Term selected.' ),
+			'termAdded'    => __( 'Term added.' ),
+			'termRemoved'  => __( 'Term removed.' ),
+		) );
+
+		$scripts->add( 'post', "/wp-admin/js/post$suffix.js", array( 'suggest', 'wp-lists', 'postbox', 'tags-box', 'underscore', 'word-count', 'wp-a11y' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'post', 'postL10n', array(
 			'ok' => __('OK'),
 			'cancel' => __('Cancel'),
@@ -457,11 +695,11 @@
 			'publishOnFuture' =>  __('Schedule for:'),
 			'publishOnPast' => __('Published on:'),
 			/* translators: 1: month, 2: day, 3: year, 4: hour, 5: minute */
-			'dateFormat' => __('%1$s %2$s, %3$s @ %4$s : %5$s'),
+			'dateFormat' => __('%1$s %2$s, %3$s @ %4$s:%5$s'),
 			'showcomm' => __('Show more comments'),
 			'endcomm' => __('No more comments found.'),
 			'publish' => __('Publish'),
-			'schedule' => __('Schedule'),
+			'schedule' => _x('Schedule', 'post action/button label'),
 			'update' => __('Update'),
 			'savePending' => __('Save as Pending'),
 			'saveDraft' => __('Save Draft'),
@@ -473,75 +711,148 @@
 			'published' => __('Published'),
 			'saveAlert' => __('The changes you made will be lost if you navigate away from this page.'),
 			'savingText' => __('Saving Draft&#8230;'),
+			'permalinkSaved' => __( 'Permalink saved' ),
 		) );
 
-		$scripts->add( 'press-this', "/wp-admin/js/press-this$suffix.js", array( 'jquery', 'tags-box' ), false, 1 );
-		did_action( 'init' ) && $scripts->localize( 'press-this', 'pressThisL10n', array(
-			'newPost' => __( 'Title' ),
-			'serverError' => __( 'Connection lost or the server is busy. Please try again later.' ),
-			'saveAlert' => __( 'The changes you made will be lost if you navigate away from this page.' ),
-			/* translators: %d: nth embed found in a post */
-			'suggestedEmbedAlt' => __( 'Suggested embed #%d' ),
-			/* translators: %d: nth image found in a post */
-			'suggestedImgAlt' => __( 'Suggested image #%d' ),
-		) );
-
-		$scripts->add( 'editor-expand', "/wp-admin/js/editor-expand$suffix.js", array( 'jquery' ), false, 1 );
+		$scripts->add( 'editor-expand', "/wp-admin/js/editor-expand$suffix.js", array( 'jquery', 'underscore' ), false, 1 );
 
 		$scripts->add( 'link', "/wp-admin/js/link$suffix.js", array( 'wp-lists', 'postbox' ), false, 1 );
 
 		$scripts->add( 'comment', "/wp-admin/js/comment$suffix.js", array( 'jquery', 'postbox' ) );
 		$scripts->add_data( 'comment', 'group', 1 );
 		did_action( 'init' ) && $scripts->localize( 'comment', 'commentL10n', array(
-			'submittedOn' => __('Submitted on:')
+			'submittedOn' => __( 'Submitted on:' ),
+			/* translators: 1: month, 2: day, 3: year, 4: hour, 5: minute */
+			'dateFormat' => __( '%1$s %2$s, %3$s @ %4$s:%5$s' )
 		) );
 
 		$scripts->add( 'admin-gallery', "/wp-admin/js/gallery$suffix.js", array( 'jquery-ui-sortable' ) );
 
 		$scripts->add( 'admin-widgets', "/wp-admin/js/widgets$suffix.js", array( 'jquery-ui-sortable', 'jquery-ui-draggable', 'jquery-ui-droppable' ), false, 1 );
+		did_action( 'init' ) && $scripts->add_inline_script( 'admin-widgets', sprintf( 'wpWidgets.l10n = %s;', wp_json_encode( array(
+			'save' => __( 'Save' ),
+			'saved' => __( 'Saved' ),
+			'saveAlert' => __( 'The changes you made will be lost if you navigate away from this page.' ),
+		) ) ) );
 
-		$scripts->add( 'theme', "/wp-admin/js/theme$suffix.js", array( 'wp-backbone', 'wp-a11y' ), false, 1 );
+		$scripts->add( 'media-widgets', "/wp-admin/js/widgets/media-widgets$suffix.js", array( 'jquery', 'media-models', 'media-views', 'wp-api-request' ) );
+		$scripts->add_inline_script( 'media-widgets', 'wp.mediaWidgets.init();', 'after' );
 
-		$scripts->add( 'inline-edit-post', "/wp-admin/js/inline-edit-post$suffix.js", array( 'jquery', 'suggest' ), false, 1 );
+		$scripts->add( 'media-audio-widget', "/wp-admin/js/widgets/media-audio-widget$suffix.js", array( 'media-widgets', 'media-audiovideo' ) );
+		$scripts->add( 'media-image-widget', "/wp-admin/js/widgets/media-image-widget$suffix.js", array( 'media-widgets' ) );
+		$scripts->add( 'media-gallery-widget', "/wp-admin/js/widgets/media-gallery-widget$suffix.js", array( 'media-widgets' ) );
+		$scripts->add( 'media-video-widget', "/wp-admin/js/widgets/media-video-widget$suffix.js", array( 'media-widgets', 'media-audiovideo', 'wp-api-request' ) );
+		$scripts->add( 'text-widgets', "/wp-admin/js/widgets/text-widgets$suffix.js", array( 'jquery', 'backbone', 'editor', 'wp-util', 'wp-a11y' ) );
+		$scripts->add( 'custom-html-widgets', "/wp-admin/js/widgets/custom-html-widgets$suffix.js", array( 'jquery', 'backbone', 'wp-util', 'jquery-ui-core', 'wp-a11y' ) );
+
+		$scripts->add( 'theme', "/wp-admin/js/theme$suffix.js", array( 'wp-backbone', 'wp-a11y', 'customize-base' ), false, 1 );
+
+		$scripts->add( 'inline-edit-post', "/wp-admin/js/inline-edit-post$suffix.js", array( 'jquery', 'tags-suggest', 'wp-a11y' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'inline-edit-post', 'inlineEditL10n', array(
-			'error' => __('Error while saving the changes.'),
-			'ntdeltitle' => __('Remove From Bulk Edit'),
-			'notitle' => __('(no title)'),
-			'comma' => trim( _x( ',', 'tag delimiter' ) ),
+			'error'      => __( 'Error while saving the changes.' ),
+			'ntdeltitle' => __( 'Remove From Bulk Edit' ),
+			'notitle'    => __( '(no title)' ),
+			'comma'      => trim( _x( ',', 'tag delimiter' ) ),
+			'saved'      => __( 'Changes saved.' ),
 		) );
 
-		$scripts->add( 'inline-edit-tax', "/wp-admin/js/inline-edit-tax$suffix.js", array( 'jquery' ), false, 1 );
+		$scripts->add( 'inline-edit-tax', "/wp-admin/js/inline-edit-tax$suffix.js", array( 'jquery', 'wp-a11y' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'inline-edit-tax', 'inlineEditL10n', array(
-			'error' => __('Error while saving the changes.')
+			'error' => __( 'Error while saving the changes.' ),
+			'saved' => __( 'Changes saved.' ),
 		) );
 
-		$scripts->add( 'plugin-install', "/wp-admin/js/plugin-install$suffix.js", array( 'jquery', 'thickbox' ), false, 1 );
+		$scripts->add( 'plugin-install', "/wp-admin/js/plugin-install$suffix.js", array( 'jquery', 'jquery-ui-core', 'thickbox' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'plugin-install', 'plugininstallL10n', array(
-			'plugin_information' => __('Plugin Information:'),
+			'plugin_information' => __( 'Plugin:' ),
+			'plugin_modal_label' => __( 'Plugin details' ),
 			'ays' => __('Are you sure you want to install this plugin?')
 		) );
 
-		$scripts->add( 'updates', "/wp-admin/js/updates$suffix.js", array( 'jquery', 'wp-util', 'wp-a11y' ) );
+		$scripts->add( 'updates', "/wp-admin/js/updates$suffix.js", array( 'jquery', 'wp-util', 'wp-a11y' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'updates', '_wpUpdatesSettings', array(
 			'ajax_nonce' => wp_create_nonce( 'updates' ),
 			'l10n'       => array(
-				'updating'          => __( 'Updating...' ),
-				'updated'           => __( 'Updated!' ),
-				'updateFailed'      => __( 'Update Failed' ),
-				/* translators: Plugin name and version */
-				'updatingLabel'     => __( 'Updating %s...' ),
-				/* translators: Plugin name and version */
-				'updatedLabel'      => __( '%s updated!' ),
-				/* translators: Plugin name and version */
-				'updateFailedLabel' => __( '%s update failed' ),
-				/* translators: JavaScript accessible string */
-				'updatingMsg'       => __( 'Updating... please wait.' ),
-				/* translators: JavaScript accessible string */
-				'updatedMsg'        => __( 'Update completed successfully.' ),
-				/* translators: JavaScript accessible string */
-				'updateCancel'      => __( 'Update canceled.' ),
-				'beforeunload'      => __( 'Plugin updates may not complete if you navigate away from this page.' ),
-			)
+				/* translators: %s: Search string */
+				'searchResults'              => __( 'Search results for &#8220;%s&#8221;' ),
+				'searchResultsLabel'         => __( 'Search Results' ),
+				'noPlugins'                  => __( 'You do not appear to have any plugins available at this time.' ),
+				'noItemsSelected'            => __( 'Please select at least one item to perform this action on.' ),
+				'updating'                   => __( 'Updating...' ), // No ellipsis.
+				'pluginUpdated'              => _x( 'Updated!', 'plugin' ),
+				'themeUpdated'               => _x( 'Updated!', 'theme' ),
+				'update'                     => __( 'Update' ),
+				'updateNow'                  => __( 'Update Now' ),
+				/* translators: %s: Plugin name and version */
+				'pluginUpdateNowLabel'       => _x( 'Update %s now', 'plugin' ),
+				'updateFailedShort'          => __( 'Update Failed!' ),
+				/* translators: %s: Error string for a failed update */
+				'updateFailed'               => __( 'Update Failed: %s' ),
+				/* translators: %s: Plugin name and version */
+				'pluginUpdatingLabel'        => _x( 'Updating %s...', 'plugin' ), // No ellipsis.
+				/* translators: %s: Plugin name and version */
+				'pluginUpdatedLabel'         => _x( '%s updated!', 'plugin' ),
+				/* translators: %s: Plugin name and version */
+				'pluginUpdateFailedLabel'    => _x( '%s update failed', 'plugin' ),
+				/* translators: Accessibility text */
+				'updatingMsg'                => __( 'Updating... please wait.' ), // No ellipsis.
+				/* translators: Accessibility text */
+				'updatedMsg'                 => __( 'Update completed successfully.' ),
+				/* translators: Accessibility text */
+				'updateCancel'               => __( 'Update canceled.' ),
+				'beforeunload'               => __( 'Updates may not complete if you navigate away from this page.' ),
+				'installNow'                 => __( 'Install Now' ),
+				/* translators: %s: Plugin name */
+				'pluginInstallNowLabel'      => _x( 'Install %s now', 'plugin' ),
+				'installing'                 => __( 'Installing...' ),
+				'pluginInstalled'            => _x( 'Installed!', 'plugin' ),
+				'themeInstalled'             => _x( 'Installed!', 'theme' ),
+				'installFailedShort'         => __( 'Installation Failed!' ),
+				/* translators: %s: Error string for a failed installation */
+				'installFailed'              => __( 'Installation failed: %s' ),
+				/* translators: %s: Plugin name and version */
+				'pluginInstallingLabel'      => _x( 'Installing %s...', 'plugin' ), // no ellipsis
+				/* translators: %s: Theme name and version */
+				'themeInstallingLabel'       => _x( 'Installing %s...', 'theme' ), // no ellipsis
+				/* translators: %s: Plugin name and version */
+				'pluginInstalledLabel'       => _x( '%s installed!', 'plugin' ),
+				/* translators: %s: Theme name and version */
+				'themeInstalledLabel'        => _x( '%s installed!', 'theme' ),
+				/* translators: %s: Plugin name and version */
+				'pluginInstallFailedLabel'   => _x( '%s installation failed', 'plugin' ),
+				/* translators: %s: Theme name and version */
+				'themeInstallFailedLabel'    => _x( '%s installation failed', 'theme' ),
+				'installingMsg'              => __( 'Installing... please wait.' ),
+				'installedMsg'               => __( 'Installation completed successfully.' ),
+				/* translators: %s: Activation URL */
+				'importerInstalledMsg'       => __( 'Importer installed successfully. <a href="%s">Run importer</a>' ),
+				/* translators: %s: Theme name */
+				'aysDelete'                  => __( 'Are you sure you want to delete %s?' ),
+				/* translators: %s: Plugin name */
+				'aysDeleteUninstall'         => __( 'Are you sure you want to delete %s and its data?' ),
+				'aysBulkDelete'              => __( 'Are you sure you want to delete the selected plugins and their data?' ),
+				'aysBulkDeleteThemes'        => __( 'Caution: These themes may be active on other sites in the network. Are you sure you want to proceed?' ),
+				'deleting'                   => __( 'Deleting...' ),
+				/* translators: %s: Error string for a failed deletion */
+				'deleteFailed'               => __( 'Deletion failed: %s' ),
+				'pluginDeleted'              => _x( 'Deleted!', 'plugin' ),
+				'themeDeleted'               => _x( 'Deleted!', 'theme' ),
+				'livePreview'                => __( 'Live Preview' ),
+				'activatePlugin'             => is_network_admin() ? __( 'Network Activate' ) : __( 'Activate' ),
+				'activateTheme'              => is_network_admin() ? __( 'Network Enable' ) : __( 'Activate' ),
+				/* translators: %s: Plugin name */
+				'activatePluginLabel'        => is_network_admin() ? _x( 'Network Activate %s', 'plugin' ) : _x( 'Activate %s', 'plugin' ),
+				/* translators: %s: Theme name */
+				'activateThemeLabel'         => is_network_admin() ? _x( 'Network Activate %s', 'theme' ) : _x( 'Activate %s', 'theme' ),
+				'activateImporter'           => __( 'Run Importer' ),
+				/* translators: %s: Importer name */
+				'activateImporterLabel'      => __( 'Run %s' ),
+				'unknownError'               => __( 'Something went wrong.' ),
+				'connectionError'            => __( 'Connection lost or the server is busy. Please try again later.' ),
+				'nonceError'                 => __( 'An error has occurred. Please reload the page and try again.' ),
+				'pluginsFound'               => __( 'Number of plugins found: %d' ),
+				'noPluginsFound'             => __( 'No plugins found. Try a different search.' ),
+			),
 		) );
 
 		$scripts->add( 'farbtastic', '/wp-admin/js/farbtastic.js', array('jquery'), '1.2' );
@@ -549,13 +860,15 @@
 		$scripts->add( 'iris', '/wp-admin/js/iris.min.js', array( 'jquery-ui-draggable', 'jquery-ui-slider', 'jquery-touch-punch' ), '1.0.7', 1 );
 		$scripts->add( 'wp-color-picker', "/wp-admin/js/color-picker$suffix.js", array( 'iris' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'wp-color-picker', 'wpColorPickerL10n', array(
-			'clear' => __( 'Clear' ),
-			'defaultString' => __( 'Default' ),
-			'pick' => __( 'Select Color' ),
-			'current' => __( 'Current Color' ),
+			'clear'            => __( 'Clear' ),
+			'clearAriaLabel'   => __( 'Clear color' ),
+			'defaultString'    => __( 'Default' ),
+			'defaultAriaLabel' => __( 'Select default color' ),
+			'pick'             => __( 'Select Color' ),
+			'defaultLabel'     => __( 'Color value' ),
 		) );
 
-		$scripts->add( 'dashboard', "/wp-admin/js/dashboard$suffix.js", array( 'jquery', 'admin-comments', 'postbox' ), false, 1 );
+		$scripts->add( 'dashboard', "/wp-admin/js/dashboard$suffix.js", array( 'jquery', 'admin-comments', 'postbox', 'wp-util', 'wp-a11y' ), false, 1 );
 
 		$scripts->add( 'list-revisions', "/wp-includes/js/wp-list-revisions$suffix.js" );
 
@@ -573,13 +886,13 @@
 		$scripts->add( 'set-post-thumbnail', "/wp-admin/js/set-post-thumbnail$suffix.js", array( 'jquery' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'set-post-thumbnail', 'setPostThumbnailL10n', array(
 			'setThumbnail' => __( 'Use as featured image' ),
-			'saving' => __( 'Saving...' ),
+			'saving' => __( 'Saving...' ), // no ellipsis
 			'error' => __( 'Could not set that as the thumbnail image. Try a different attachment.' ),
 			'done' => __( 'Done' )
 		) );
 
 		// Navigation Menus
-		$scripts->add( 'nav-menu', "/wp-admin/js/nav-menu$suffix.js", array( 'jquery-ui-sortable', 'jquery-ui-draggable', 'jquery-ui-droppable', 'wp-lists', 'postbox' ) );
+		$scripts->add( 'nav-menu', "/wp-admin/js/nav-menu$suffix.js", array( 'jquery-ui-sortable', 'jquery-ui-draggable', 'jquery-ui-droppable', 'wp-lists', 'postbox', 'json2' ) );
 		did_action( 'init' ) && $scripts->localize( 'nav-menu', 'navMenuL10n', array(
 			'noResultsFound' => __( 'No results found.' ),
 			'warnDeleteMenu' => __( "You are about to permanently delete this menu. \n 'Cancel' to stop, 'OK' to delete." ),
@@ -608,7 +921,7 @@
  *
  * @since 2.6.0
  *
- * @param object $styles
+ * @param WP_Styles $styles
  */
 function wp_default_styles( &$styles ) {
 	include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version
@@ -625,6 +938,7 @@
 	$styles->text_direction = function_exists( 'is_rtl' ) && is_rtl() ? 'rtl' : 'ltr';
 	$styles->default_dirs = array('/wp-admin/', '/wp-includes/css/');
 
+	// Open Sans is no longer used by core, but may be relied upon by themes and plugins.
 	$open_sans_font_url = '';
 
 	/* translators: If there are characters in your language that are not supported
@@ -647,60 +961,83 @@
 		}
 
 		// Hotlink Open Sans, for now
-		$open_sans_font_url = "//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,300,400,600&subset=$subsets";
+		$open_sans_font_url = "https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,300,400,600&subset=$subsets";
 	}
 
 	// Register a stylesheet for the selected admin color scheme.
-	$styles->add( 'colors', true, array( 'wp-admin', 'buttons', 'open-sans', 'dashicons' ) );
+	$styles->add( 'colors', true, array( 'wp-admin', 'buttons' ) );
 
 	$suffix = SCRIPT_DEBUG ? '' : '.min';
 
 	// Admin CSS
-	$styles->add( 'wp-admin',           "/wp-admin/css/wp-admin$suffix.css", array( 'open-sans', 'dashicons' ) );
-	$styles->add( 'login',              "/wp-admin/css/login$suffix.css", array( 'buttons', 'open-sans', 'dashicons' ) );
-	$styles->add( 'install',            "/wp-admin/css/install$suffix.css", array( 'buttons', 'open-sans' ) );
-	$styles->add( 'wp-color-picker',    "/wp-admin/css/color-picker$suffix.css" );
-	$styles->add( 'customize-controls', "/wp-admin/css/customize-controls$suffix.css", array( 'wp-admin', 'colors', 'ie', 'imgareaselect' ) );
-	$styles->add( 'customize-widgets',  "/wp-admin/css/customize-widgets$suffix.css", array( 'wp-admin', 'colors' ) );
-	$styles->add( 'press-this',         "/wp-admin/css/press-this$suffix.css", array( 'open-sans', 'buttons' ) );
+	$styles->add( 'common',              "/wp-admin/css/common$suffix.css" );
+	$styles->add( 'forms',               "/wp-admin/css/forms$suffix.css" );
+	$styles->add( 'admin-menu',          "/wp-admin/css/admin-menu$suffix.css" );
+	$styles->add( 'dashboard',           "/wp-admin/css/dashboard$suffix.css" );
+	$styles->add( 'list-tables',         "/wp-admin/css/list-tables$suffix.css" );
+	$styles->add( 'edit',                "/wp-admin/css/edit$suffix.css" );
+	$styles->add( 'revisions',           "/wp-admin/css/revisions$suffix.css" );
+	$styles->add( 'media',               "/wp-admin/css/media$suffix.css" );
+	$styles->add( 'themes',              "/wp-admin/css/themes$suffix.css" );
+	$styles->add( 'about',               "/wp-admin/css/about$suffix.css" );
+	$styles->add( 'nav-menus',           "/wp-admin/css/nav-menus$suffix.css" );
+	$styles->add( 'widgets',             "/wp-admin/css/widgets$suffix.css", array( 'wp-pointer' ) );
+	$styles->add( 'site-icon',           "/wp-admin/css/site-icon$suffix.css" );
+	$styles->add( 'l10n',                "/wp-admin/css/l10n$suffix.css" );
+	$styles->add( 'code-editor',         "/wp-admin/css/code-editor$suffix.css", array( 'wp-codemirror' ) );
 
-	$styles->add( 'ie',                 "/wp-admin/css/ie$suffix.css" );
+	$styles->add( 'wp-admin', false, array( 'dashicons', 'common', 'forms', 'admin-menu', 'dashboard', 'list-tables', 'edit', 'revisions', 'media', 'themes', 'about', 'nav-menus', 'widgets', 'site-icon', 'l10n' ) );
+
+	$styles->add( 'login',               "/wp-admin/css/login$suffix.css", array( 'dashicons', 'buttons', 'forms', 'l10n' ) );
+	$styles->add( 'install',             "/wp-admin/css/install$suffix.css", array( 'buttons' ) );
+	$styles->add( 'wp-color-picker',     "/wp-admin/css/color-picker$suffix.css" );
+	$styles->add( 'customize-controls',  "/wp-admin/css/customize-controls$suffix.css", array( 'wp-admin', 'colors', 'ie', 'imgareaselect' ) );
+	$styles->add( 'customize-widgets',   "/wp-admin/css/customize-widgets$suffix.css", array( 'wp-admin', 'colors' ) );
+	$styles->add( 'customize-nav-menus', "/wp-admin/css/customize-nav-menus$suffix.css", array( 'wp-admin', 'colors' ) );
+
+	$styles->add( 'ie', "/wp-admin/css/ie$suffix.css" );
 	$styles->add_data( 'ie', 'conditional', 'lte IE 7' );
 
 	// Common dependencies
 	$styles->add( 'buttons',   "/wp-includes/css/buttons$suffix.css" );
 	$styles->add( 'dashicons', "/wp-includes/css/dashicons$suffix.css" );
-	$styles->add( 'open-sans', $open_sans_font_url );
 
 	// Includes CSS
-	$styles->add( 'admin-bar',      "/wp-includes/css/admin-bar$suffix.css", array( 'open-sans', 'dashicons' ) );
-	$styles->add( 'wp-auth-check',  "/wp-includes/css/wp-auth-check$suffix.css", array( 'dashicons' ) );
-	$styles->add( 'editor-buttons', "/wp-includes/css/editor$suffix.css", array( 'dashicons' ) );
-	$styles->add( 'media-views',    "/wp-includes/css/media-views$suffix.css", array( 'buttons', 'dashicons', 'wp-mediaelement' ) );
-	$styles->add( 'wp-pointer',     "/wp-includes/css/wp-pointer$suffix.css", array( 'dashicons' ) );
+	$styles->add( 'admin-bar',            "/wp-includes/css/admin-bar$suffix.css", array( 'dashicons' ) );
+	$styles->add( 'wp-auth-check',        "/wp-includes/css/wp-auth-check$suffix.css", array( 'dashicons' ) );
+	$styles->add( 'editor-buttons',       "/wp-includes/css/editor$suffix.css", array( 'dashicons' ) );
+	$styles->add( 'media-views',          "/wp-includes/css/media-views$suffix.css", array( 'buttons', 'dashicons', 'wp-mediaelement' ) );
+	$styles->add( 'wp-pointer',           "/wp-includes/css/wp-pointer$suffix.css", array( 'dashicons' ) );
+	$styles->add( 'customize-preview',    "/wp-includes/css/customize-preview$suffix.css", array( 'dashicons' ) );
+	$styles->add( 'wp-embed-template-ie', "/wp-includes/css/wp-embed-template-ie$suffix.css" );
+	$styles->add_data( 'wp-embed-template-ie', 'conditional', 'lte IE 8' );
 
 	// External libraries and friends
 	$styles->add( 'imgareaselect',       '/wp-includes/js/imgareaselect/imgareaselect.css', array(), '0.9.8' );
 	$styles->add( 'wp-jquery-ui-dialog', "/wp-includes/css/jquery-ui-dialog$suffix.css", array( 'dashicons' ) );
-	$styles->add( 'mediaelement',        "/wp-includes/js/mediaelement/mediaelementplayer.min.css", array(), '2.16.2' );
-	$styles->add( 'wp-mediaelement',     "/wp-includes/js/mediaelement/wp-mediaelement.css", array( 'mediaelement' ) );
+	$styles->add( 'mediaelement',        "/wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css", array(), '4.2.6-78496d1' );
+	$styles->add( 'wp-mediaelement',     "/wp-includes/js/mediaelement/wp-mediaelement$suffix.css", array( 'mediaelement' ) );
 	$styles->add( 'thickbox',            '/wp-includes/js/thickbox/thickbox.css', array( 'dashicons' ) );
+	$styles->add( 'wp-codemirror',       '/wp-includes/js/codemirror/codemirror.min.css', array(), '5.29.1-alpha-ee20357' );
 
 	// Deprecated CSS
-	$styles->add( 'media',      "/wp-admin/css/deprecated-media$suffix.css" );
-	$styles->add( 'farbtastic', '/wp-admin/css/farbtastic.css', array(), '1.3u1' );
-	$styles->add( 'jcrop',      "/wp-includes/js/jcrop/jquery.Jcrop.min.css", array(), '0.9.12' );
+	$styles->add( 'deprecated-media', "/wp-admin/css/deprecated-media$suffix.css" );
+	$styles->add( 'farbtastic',       "/wp-admin/css/farbtastic$suffix.css", array(), '1.3u1' );
+	$styles->add( 'jcrop',            "/wp-includes/js/jcrop/jquery.Jcrop.min.css", array(), '0.9.12' );
 	$styles->add( 'colors-fresh', false, array( 'wp-admin', 'buttons' ) ); // Old handle.
+	$styles->add( 'open-sans', $open_sans_font_url ); // No longer used in core as of 4.6
 
 	// RTL CSS
 	$rtl_styles = array(
 		// wp-admin
-		'wp-admin', 'install', 'wp-color-picker', 'customize-controls', 'customize-widgets', 'ie', 'login', 'press-this',
+		'common', 'forms', 'admin-menu', 'dashboard', 'list-tables', 'edit', 'revisions', 'media', 'themes', 'about', 'nav-menus',
+		'widgets', 'site-icon', 'l10n', 'install', 'wp-color-picker', 'customize-controls', 'customize-widgets', 'customize-nav-menus', 'customize-preview',
+		'ie', 'login',
 		// wp-includes
 		'buttons', 'admin-bar', 'wp-auth-check', 'editor-buttons', 'media-views', 'wp-pointer',
 		'wp-jquery-ui-dialog',
 		// deprecated
-		'media', 'farbtastic',
+		'deprecated-media', 'farbtastic',
 	);
 
 	foreach ( $rtl_styles as $rtl_style ) {
@@ -750,6 +1087,132 @@
 		'blog_id' => get_current_blog_id(),
 	) );
 
+	wp_localize_script( 'mce-view', 'mceViewL10n', array(
+		'shortcodes' => ! empty( $GLOBALS['shortcode_tags'] ) ? array_keys( $GLOBALS['shortcode_tags'] ) : array()
+	) );
+
+	wp_localize_script( 'word-count', 'wordCountL10n', array(
+		/*
+		 * translators: If your word count is based on single characters (e.g. East Asian characters),
+		 * enter 'characters_excluding_spaces' or 'characters_including_spaces'. Otherwise, enter 'words'.
+		 * Do not translate into your own language.
+		 */
+		'type' => _x( 'words', 'Word count type. Do not translate!' ),
+		'shortcodes' => ! empty( $GLOBALS['shortcode_tags'] ) ? array_keys( $GLOBALS['shortcode_tags'] ) : array()
+	) );
+}
+
+/**
+ * Localizes the jQuery UI datepicker.
+ *
+ * @since 4.6.0
+ *
+ * @link https://api.jqueryui.com/datepicker/#options
+ *
+ * @global WP_Locale $wp_locale The WordPress date and time locale object.
+ */
+function wp_localize_jquery_ui_datepicker() {
+	global $wp_locale;
+
+	if ( ! wp_script_is( 'jquery-ui-datepicker', 'enqueued' ) ) {
+		return;
+	}
+
+	// Convert the PHP date format into jQuery UI's format.
+	$datepicker_date_format = str_replace(
+		array(
+			'd', 'j', 'l', 'z', // Day.
+			'F', 'M', 'n', 'm', // Month.
+			'Y', 'y'            // Year.
+		),
+		array(
+			'dd', 'd', 'DD', 'o',
+			'MM', 'M', 'm', 'mm',
+			'yy', 'y'
+		),
+		get_option( 'date_format' )
+	);
+
+	$datepicker_defaults = wp_json_encode( array(
+		'closeText'       => __( 'Close' ),
+		'currentText'     => __( 'Today' ),
+		'monthNames'      => array_values( $wp_locale->month ),
+		'monthNamesShort' => array_values( $wp_locale->month_abbrev ),
+		'nextText'        => __( 'Next' ),
+		'prevText'        => __( 'Previous' ),
+		'dayNames'        => array_values( $wp_locale->weekday ),
+		'dayNamesShort'   => array_values( $wp_locale->weekday_abbrev ),
+		'dayNamesMin'     => array_values( $wp_locale->weekday_initial ),
+		'dateFormat'      => $datepicker_date_format,
+		'firstDay'        => absint( get_option( 'start_of_week' ) ),
+		'isRTL'           => $wp_locale->is_rtl(),
+	) );
+
+	wp_add_inline_script( 'jquery-ui-datepicker', "jQuery(document).ready(function(jQuery){jQuery.datepicker.setDefaults({$datepicker_defaults});});" );
+}
+
+/**
+ * Localizes community events data that needs to be passed to dashboard.js.
+ *
+ * @since 4.8.0
+ */
+function wp_localize_community_events() {
+	if ( ! wp_script_is( 'dashboard' ) ) {
+		return;
+	}
+
+	require_once( ABSPATH . 'wp-admin/includes/class-wp-community-events.php' );
+
+	$user_id            = get_current_user_id();
+	$saved_location     = get_user_option( 'community-events-location', $user_id );
+	$saved_ip_address   = isset( $saved_location['ip'] ) ? $saved_location['ip'] : false;
+	$current_ip_address = WP_Community_Events::get_unsafe_client_ip();
+
+	/*
+	 * If the user's location is based on their IP address, then update their
+	 * location when their IP address changes. This allows them to see events
+	 * in their current city when travelling. Otherwise, they would always be
+	 * shown events in the city where they were when they first loaded the
+	 * Dashboard, which could have been months or years ago.
+	 */
+	if ( $saved_ip_address && $current_ip_address && $current_ip_address !== $saved_ip_address ) {
+		$saved_location['ip'] = $current_ip_address;
+		update_user_option( $user_id, 'community-events-location', $saved_location, true );
+	}
+
+	$events_client = new WP_Community_Events( $user_id, $saved_location );
+
+	wp_localize_script( 'dashboard', 'communityEventsData', array(
+		'nonce' => wp_create_nonce( 'community_events' ),
+		'cache' => $events_client->get_cached_events(),
+
+		'l10n' => array(
+			'enter_closest_city' => __( 'Enter your closest city to find nearby events.' ),
+			'error_occurred_please_try_again' => __( 'An error occurred. Please try again.' ),
+			'attend_event_near_generic' => __( 'Attend an upcoming event near you.' ),
+
+			/*
+			 * These specific examples were chosen to highlight the fact that a
+			 * state is not needed, even for cities whose name is not unique.
+			 * It would be too cumbersome to include that in the instructions
+			 * to the user, so it's left as an implication.
+			 */
+			/* translators: %s is the name of the city we couldn't locate.
+			 * Replace the examples with cities related to your locale. Test that
+			 * they match the expected location and have upcoming events before
+			 * including them. If no cities related to your locale have events,
+			 * then use cities related to your locale that would be recognizable
+			 * to most users. Use only the city name itself, without any region
+			 * or country. Use the endonym (native locale name) instead of the
+			 * English name if possible.
+			 */
+			'could_not_locate_city' => __( 'We couldn&#8217;t locate %s. Please try another nearby city. For example: Kansas City; Springfield; Portland.' ),
+
+			// This one is only used with wp.a11y.speak(), so it can/should be more brief.
+			/* translators: %s: the name of a city */
+			'city_updated' => __( 'City updated. Listing events near %s.' ),
+		)
+	) );
 }
 
 /**
@@ -766,16 +1229,16 @@
  * the $_wp_admin_css_colors array value URL.
  *
  * @since 2.6.0
- * @uses $_wp_admin_css_colors
+ * @global array $_wp_admin_css_colors
  *
- * @param string $src Source URL.
+ * @param string $src    Source URL.
  * @param string $handle Either 'colors' or 'colors-rtl'.
- * @return string URL path to CSS stylesheet for Administration Screens.
+ * @return string|false URL path to CSS stylesheet for Administration Screens.
  */
 function wp_style_loader_src( $src, $handle ) {
 	global $_wp_admin_css_colors;
 
-	if ( defined('WP_INSTALLING') )
+	if ( wp_installing() )
 		return preg_replace( '#^wp-admin/#', './', $src );
 
 	if ( 'colors' == $handle ) {
@@ -785,13 +1248,13 @@
 			$color = 'fresh';
 
 		$color = $_wp_admin_css_colors[$color];
-		$parsed = parse_url( $src );
 		$url = $color->url;
 
 		if ( ! $url ) {
 			return false;
 		}
 
+		$parsed = parse_url( $src );
 		if ( isset($parsed['query']) && $parsed['query'] ) {
 			wp_parse_str( $parsed['query'], $qv );
 			$url = add_query_arg( $qv, $url );
@@ -812,25 +1275,27 @@
  * @since 2.8.0
  *
  * @see wp_print_scripts()
+ *
+ * @global bool $concatenate_scripts
+ *
+ * @return array
  */
 function print_head_scripts() {
-	global $wp_scripts, $concatenate_scripts;
+	global $concatenate_scripts;
 
 	if ( ! did_action('wp_print_scripts') ) {
 		/** This action is documented in wp-includes/functions.wp-scripts.php */
 		do_action( 'wp_print_scripts' );
 	}
 
-	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
-		$wp_scripts = new WP_Scripts();
-	}
+	$wp_scripts = wp_scripts();
 
 	script_concat_settings();
 	$wp_scripts->do_concat = $concatenate_scripts;
 	$wp_scripts->do_head_items();
 
 	/**
-	 * Filter whether to print the head scripts.
+	 * Filters whether to print the head scripts.
 	 *
 	 * @since 2.8.0
 	 *
@@ -848,6 +1313,11 @@
  * Prints the scripts that were queued for the footer or too late for the HTML head.
  *
  * @since 2.8.0
+ *
+ * @global WP_Scripts $wp_scripts
+ * @global bool       $concatenate_scripts
+ *
+ * @return array
  */
 function print_footer_scripts() {
 	global $wp_scripts, $concatenate_scripts;
@@ -860,7 +1330,7 @@
 	$wp_scripts->do_footer_items();
 
 	/**
-	 * Filter whether to print the footer scripts.
+	 * Filters whether to print the footer scripts.
 	 *
 	 * @since 2.8.0
 	 *
@@ -878,6 +1348,9 @@
  * Print scripts (internal use only)
  *
  * @ignore
+ *
+ * @global WP_Scripts $wp_scripts
+ * @global bool       $compress_scripts
  */
 function _print_scripts() {
 	global $wp_scripts, $compress_scripts;
@@ -914,6 +1387,10 @@
  * wp_print_footer_scripts() is called in the footer to print these scripts.
  *
  * @since 2.8.0
+ *
+ * @global WP_Scripts $wp_scripts
+ *
+ * @return array
  */
 function wp_print_head_scripts() {
 	if ( ! did_action('wp_print_scripts') ) {
@@ -974,20 +1451,22 @@
  * Prints the styles queue in the HTML head on admin pages.
  *
  * @since 2.8.0
+ *
+ * @global bool $concatenate_scripts
+ *
+ * @return array
  */
 function print_admin_styles() {
-	global $wp_styles, $concatenate_scripts;
+	global $concatenate_scripts;
 
-	if ( ! ( $wp_styles instanceof WP_Styles ) ) {
-		$wp_styles = new WP_Styles();
-	}
+	$wp_styles = wp_styles();
 
 	script_concat_settings();
 	$wp_styles->do_concat = $concatenate_scripts;
 	$wp_styles->do_items(false);
 
 	/**
-	 * Filter whether to print the admin styles.
+	 * Filters whether to print the admin styles.
 	 *
 	 * @since 2.8.0
 	 *
@@ -1005,6 +1484,11 @@
  * Prints the styles that were queued too late for the HTML head.
  *
  * @since 3.3.0
+ *
+ * @global WP_Styles $wp_styles
+ * @global bool      $concatenate_scripts
+ *
+ * @return array|void
  */
 function print_late_styles() {
 	global $wp_styles, $concatenate_scripts;
@@ -1013,11 +1497,12 @@
 		return;
 	}
 
+	script_concat_settings();
 	$wp_styles->do_concat = $concatenate_scripts;
 	$wp_styles->do_footer_items();
 
 	/**
-	 * Filter whether to print the styles queued too late for the HTML head.
+	 * Filters whether to print the styles queued too late for the HTML head.
 	 *
 	 * @since 3.3.0
 	 *
@@ -1035,18 +1520,27 @@
  * Print styles (internal use only)
  *
  * @ignore
+ * @since 3.3.0
+ *
+ * @global bool $compress_css
  */
 function _print_styles() {
-	global $wp_styles, $compress_css;
+	global $compress_css;
+
+	$wp_styles = wp_styles();
 
 	$zip = $compress_css ? 1 : 0;
 	if ( $zip && defined('ENFORCE_GZIP') && ENFORCE_GZIP )
 		$zip = 'gzip';
 
-	if ( !empty($wp_styles->concat) ) {
+	if ( $concat = trim( $wp_styles->concat, ', ' ) ) {
 		$dir = $wp_styles->text_direction;
 		$ver = $wp_styles->default_version;
-		$href = $wp_styles->base_url . "/wp-admin/load-styles.php?c={$zip}&dir={$dir}&load=" . trim($wp_styles->concat, ', ') . '&ver=' . $ver;
+
+		$concat = str_split( $concat, 128 );
+		$concat = 'load%5B%5D=' . implode( '&load%5B%5D=', $concat );
+
+		$href = $wp_styles->base_url . "/wp-admin/load-styles.php?c={$zip}&dir={$dir}&" . $concat . '&ver=' . $ver;
 		echo "<link rel='stylesheet' href='" . esc_attr($href) . "' type='text/css' media='all' />\n";
 
 		if ( !empty($wp_styles->print_code) ) {
@@ -1064,6 +1558,10 @@
  * Determine the concatenation and compression settings for scripts and styles.
  *
  * @since 2.8.0
+ *
+ * @global bool $concatenate_scripts
+ * @global bool $compress_scripts
+ * @global bool $compress_css
  */
 function script_concat_settings() {
 	global $concatenate_scripts, $compress_scripts, $compress_css;
@@ -1072,7 +1570,7 @@
 
 	if ( ! isset($concatenate_scripts) ) {
 		$concatenate_scripts = defined('CONCATENATE_SCRIPTS') ? CONCATENATE_SCRIPTS : true;
-		if ( ! is_admin() || ( defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ) )
+		if ( ( ! is_admin() && ! did_action( 'login_init' ) ) || ( defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ) )
 			$concatenate_scripts = false;
 	}