wp/wp-includes/script-loader.php
changeset 21 48c4eec2b7e6
parent 19 3d72ae0968f4
child 22 8c2e4d02f4ef
--- a/wp/wp-includes/script-loader.php	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/script-loader.php	Fri Sep 05 18:40:08 2025 +0200
@@ -20,16 +20,16 @@
 require ABSPATH . WPINC . '/class-wp-dependency.php';
 
 /** WordPress Dependencies Class */
-require ABSPATH . WPINC . '/class.wp-dependencies.php';
+require ABSPATH . WPINC . '/class-wp-dependencies.php';
 
 /** WordPress Scripts Class */
-require ABSPATH . WPINC . '/class.wp-scripts.php';
+require ABSPATH . WPINC . '/class-wp-scripts.php';
 
 /** WordPress Scripts Functions */
 require ABSPATH . WPINC . '/functions.wp-scripts.php';
 
 /** WordPress Styles Class */
-require ABSPATH . WPINC . '/class.wp-styles.php';
+require ABSPATH . WPINC . '/class-wp-styles.php';
 
 /** WordPress Styles Functions */
 require ABSPATH . WPINC . '/functions.wp-styles.php';
@@ -57,8 +57,10 @@
 	$compressed = $compress_scripts && $concatenate_scripts && isset( $_SERVER['HTTP_ACCEPT_ENCODING'] )
 		&& false !== stripos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip' ) && ! $force_uncompressed;
 
-	// Load tinymce.js when running from /src, otherwise load wp-tinymce.js.gz (in production)
-	// or tinymce.min.js (when SCRIPT_DEBUG is true).
+	/*
+	 * Load tinymce.js when running from /src, otherwise load wp-tinymce.js.gz (in production)
+	 * or tinymce.min.js (when SCRIPT_DEBUG is true).
+	 */
 	if ( $compressed ) {
 		$scripts->add( 'wp-tinymce', includes_url( 'js/tinymce/' ) . 'wp-tinymce.js', array(), $tinymce_version );
 	} else {
@@ -87,35 +89,41 @@
 	$suffix = wp_scripts_get_suffix();
 
 	$vendor_scripts = array(
-		'react'       => array( 'wp-polyfill' ),
-		'react-dom'   => array( 'react' ),
+		'react',
+		'react-dom'         => array( 'react' ),
+		'react-jsx-runtime' => array( 'react' ),
 		'regenerator-runtime',
 		'moment',
 		'lodash',
 		'wp-polyfill-fetch',
 		'wp-polyfill-formdata',
+		'wp-polyfill-importmap',
 		'wp-polyfill-node-contains',
 		'wp-polyfill-url',
 		'wp-polyfill-dom-rect',
 		'wp-polyfill-element-closest',
 		'wp-polyfill-object-fit',
-		'wp-polyfill' => array( 'regenerator-runtime' ),
+		'wp-polyfill-inert',
+		'wp-polyfill',
 	);
 
 	$vendor_scripts_versions = array(
-		'react'                       => '17.0.1',
-		'react-dom'                   => '17.0.1',
-		'regenerator-runtime'         => '0.13.9',
+		'react'                       => '18.3.1',
+		'react-dom'                   => '18.3.1',
+		'react-jsx-runtime'           => '18.3.1',
+		'regenerator-runtime'         => '0.14.0',
 		'moment'                      => '2.29.4',
-		'lodash'                      => '4.17.19',
-		'wp-polyfill-fetch'           => '3.6.2',
+		'lodash'                      => '4.17.21',
+		'wp-polyfill-fetch'           => '3.6.17',
 		'wp-polyfill-formdata'        => '4.0.10',
-		'wp-polyfill-node-contains'   => '4.0.0',
+		'wp-polyfill-node-contains'   => '4.8.0',
 		'wp-polyfill-url'             => '3.6.4',
-		'wp-polyfill-dom-rect'        => '4.0.0',
-		'wp-polyfill-element-closest' => '2.0.2',
+		'wp-polyfill-dom-rect'        => '4.8.0',
+		'wp-polyfill-element-closest' => '3.0.2',
 		'wp-polyfill-object-fit'      => '2.3.5',
+		'wp-polyfill-inert'           => '3.1.2',
 		'wp-polyfill'                 => '3.15.0',
+		'wp-polyfill-importmap'       => '1.8.2',
 	);
 
 	foreach ( $vendor_scripts as $handle => $dependencies ) {
@@ -136,7 +144,7 @@
 		'moment',
 		sprintf(
 			"moment.updateLocale( '%s', %s );",
-			get_user_locale(),
+			esc_js( get_user_locale() ),
 			wp_json_encode(
 				array(
 					'months'         => array_values( $wp_locale->month ),
@@ -169,7 +177,7 @@
  * @since 5.0.0
  *
  * @param WP_Scripts $scripts WP_Scripts object.
- * @param array      $tests   Features to detect.
+ * @param string[]   $tests   Features to detect.
  * @return string Conditional polyfill inline script.
  */
 function wp_get_script_polyfill( $scripts, $tests ) {
@@ -182,7 +190,7 @@
 		$src = $scripts->registered[ $handle ]->src;
 		$ver = $scripts->registered[ $handle ]->ver;
 
-		if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $scripts->content_url && 0 === strpos( $src, $scripts->content_url ) ) ) {
+		if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $scripts->content_url && str_starts_with( $src, $scripts->content_url ) ) ) {
 			$src = $scripts->base_url . $src;
 		}
 
@@ -190,7 +198,7 @@
 			$src = add_query_arg( 'ver', $ver, $src );
 		}
 
-		/** This filter is documented in wp-includes/class.wp-scripts.php */
+		/** This filter is documented in wp-includes/class-wp-scripts.php */
 		$src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
 
 		if ( ! $src ) {
@@ -227,6 +235,7 @@
 	if (
 		! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG
 		|| empty( $scripts->registered['react'] )
+		|| defined( 'WP_RUN_CORE_TESTS' )
 	) {
 		return;
 	}
@@ -264,8 +273,7 @@
  * @param WP_Scripts $scripts WP_Scripts object.
  */
 function wp_default_packages_scripts( $scripts ) {
-	$suffix = wp_scripts_get_suffix();
-
+	$suffix = defined( 'WP_RUN_CORE_TESTS' ) ? '.min' : wp_scripts_get_suffix();
 	/*
 	 * Expects multidimensional array like:
 	 *
@@ -273,10 +281,10 @@
 	 *     'annotations.js' => array('dependencies' => array(...), 'version' => '...'),
 	 *     'api-fetch.js' => array(...
 	 */
-	$assets = include ABSPATH . WPINC . '/assets/script-loader-packages.php';
-
-	foreach ( $assets as $package_name => $package_data ) {
-		$basename = basename( $package_name, '.js' );
+	$assets = include ABSPATH . WPINC . "/assets/script-loader-packages{$suffix}.php";
+
+	foreach ( $assets as $file_name => $package_data ) {
+		$basename = str_replace( $suffix . '.js', '', basename( $file_name ) );
 		$handle   = 'wp-' . $basename;
 		$path     = "/wp-includes/js/dist/{$basename}{$suffix}.js";
 
@@ -294,6 +302,9 @@
 			case 'wp-edit-post':
 				array_push( $dependencies, 'media-models', 'media-views', 'postbox', 'wp-dom-ready' );
 				break;
+			case 'wp-preferences':
+				array_push( $dependencies, 'wp-preferences-persistence' );
+				break;
 		}
 
 		$scripts->add( $handle, $path, $dependencies, $package_data['version'], 1 );
@@ -322,13 +333,15 @@
  * Adds inline scripts required for the WordPress JavaScript packages.
  *
  * @since 5.0.0
+ * @since 6.4.0 Added relative time strings for the `wp-date` inline script output.
  *
  * @global WP_Locale $wp_locale WordPress date and time locale object.
+ * @global wpdb      $wpdb      WordPress database abstraction object.
  *
  * @param WP_Scripts $scripts WP_Scripts object.
  */
 function wp_default_packages_inline_scripts( $scripts ) {
-	global $wp_locale;
+	global $wp_locale, $wpdb;
 
 	if ( isset( $scripts->registered['wp-api-fetch'] ) ) {
 		$scripts->registered['wp-api-fetch']->deps[] = 'wp-hooks';
@@ -337,7 +350,7 @@
 		'wp-api-fetch',
 		sprintf(
 			'wp.apiFetch.use( wp.apiFetch.createRootURLMiddleware( "%s" ) );',
-			esc_url_raw( get_rest_url() )
+			sanitize_url( get_rest_url() )
 		),
 		'after'
 	);
@@ -360,6 +373,26 @@
 		),
 		'after'
 	);
+
+	$meta_key     = $wpdb->get_blog_prefix() . 'persisted_preferences';
+	$user_id      = get_current_user_id();
+	$preload_data = get_user_meta( $user_id, $meta_key, true );
+	$scripts->add_inline_script(
+		'wp-preferences',
+		sprintf(
+			'( function() {
+				var serverData = %s;
+				var userId = "%d";
+				var persistenceLayer = wp.preferencesPersistence.__unstableCreatePersistenceLayer( serverData, userId );
+				var preferencesStore = wp.preferences.store;
+				wp.data.dispatch( preferencesStore ).setPersistenceLayer( persistenceLayer );
+			} ) ();',
+			wp_json_encode( $preload_data ),
+			$user_id
+		)
+	);
+
+	// Backwards compatibility - configure the old wp-data persistence system.
 	$scripts->add_inline_script(
 		'wp-data',
 		implode(
@@ -370,7 +403,6 @@
 				'	var storageKey = "WP_DATA_USER_" + userId;',
 				'	wp.data',
 				'		.use( wp.data.plugins.persistence, { storageKey: storageKey } );',
-				'	wp.data.plugins.persistence.__unstableMigrate( { storageKey: storageKey } );',
 				'} )();',
 			)
 		)
@@ -385,6 +417,8 @@
 		$timezone_abbr = $timezone_date->format( 'T' );
 	}
 
+	$gmt_offset = get_option( 'gmt_offset', 0 );
+
 	$scripts->add_inline_script(
 		'wp-date',
 		sprintf(
@@ -403,7 +437,32 @@
 							'future' => __( '%s from now' ),
 							/* translators: %s: Duration. */
 							'past'   => __( '%s ago' ),
+							/* translators: One second from or to a particular datetime, e.g., "a second ago" or "a second from now". */
+							's'      => __( 'a second' ),
+							/* translators: %d: Duration in seconds from or to a particular datetime, e.g., "4 seconds ago" or "4 seconds from now". */
+							'ss'     => __( '%d seconds' ),
+							/* translators: One minute from or to a particular datetime, e.g., "a minute ago" or "a minute from now". */
+							'm'      => __( 'a minute' ),
+							/* translators: %d: Duration in minutes from or to a particular datetime, e.g., "4 minutes ago" or "4 minutes from now". */
+							'mm'     => __( '%d minutes' ),
+							/* translators: One hour from or to a particular datetime, e.g., "an hour ago" or "an hour from now". */
+							'h'      => __( 'an hour' ),
+							/* translators: %d: Duration in hours from or to a particular datetime, e.g., "4 hours ago" or "4 hours from now". */
+							'hh'     => __( '%d hours' ),
+							/* translators: One day from or to a particular datetime, e.g., "a day ago" or "a day from now". */
+							'd'      => __( 'a day' ),
+							/* translators: %d: Duration in days from or to a particular datetime, e.g., "4 days ago" or "4 days from now". */
+							'dd'     => __( '%d days' ),
+							/* translators: One month from or to a particular datetime, e.g., "a month ago" or "a month from now". */
+							'M'      => __( 'a month' ),
+							/* translators: %d: Duration in months from or to a particular datetime, e.g., "4 months ago" or "4 months from now". */
+							'MM'     => __( '%d months' ),
+							/* translators: One year from or to a particular datetime, e.g., "a year ago" or "a year from now". */
+							'y'      => __( 'a year' ),
+							/* translators: %d: Duration in years from or to a particular datetime, e.g., "4 years ago" or "4 years from now". */
+							'yy'     => __( '%d years' ),
 						),
+						'startOfWeek'   => (int) get_option( 'start_of_week', 0 ),
 					),
 					'formats'  => array(
 						/* translators: Time format, see https://www.php.net/manual/datetime.format.php */
@@ -416,9 +475,10 @@
 						'datetimeAbbreviated' => __( 'M j, Y g:i a' ),
 					),
 					'timezone' => array(
-						'offset' => get_option( 'gmt_offset', 0 ),
-						'string' => $timezone_string,
-						'abbr'   => $timezone_abbr,
+						'offset'          => (float) $gmt_offset,
+						'offsetFormatted' => str_replace( array( '.25', '.5', '.75' ), array( ':15', ':30', ':45' ), (string) $gmt_offset ),
+						'string'          => $timezone_string,
+						'abbr'            => $timezone_abbr,
 					),
 				)
 			)
@@ -559,8 +619,10 @@
 	/** This filter is documented in wp-includes/class-wp-editor.php */
 	$tinymce_settings = apply_filters( 'tiny_mce_before_init', $tinymce_settings, 'classic-block' );
 
-	// Do "by hand" translation from PHP array to js object.
-	// Prevents breakage in some custom settings.
+	/*
+	 * Do "by hand" translation from PHP array to js object.
+	 * Prevents breakage in some custom settings.
+	 */
 	$init_obj = '';
 	foreach ( $tinymce_settings as $key => $value ) {
 		if ( is_bool( $value ) ) {
@@ -625,6 +687,11 @@
 		// Include an unmodified $wp_version.
 		require ABSPATH . WPINC . '/version.php';
 
+		/*
+		 * Note: str_contains() is not used here, as this file can be included
+		 * via wp-admin/load-scripts.php or wp-admin/load-styles.php, in which case
+		 * the polyfills from wp-includes/compat.php are not loaded.
+		 */
 		$develop_src = false !== strpos( $wp_version, '-src' );
 
 		if ( ! defined( 'SCRIPT_DEBUG' ) ) {
@@ -732,7 +799,7 @@
 
 	$scripts->add( 'editor', "/wp-admin/js/editor$suffix.js", array( 'utils', 'jquery' ), false, 1 );
 
-	$scripts->add( 'clipboard', "/wp-includes/js/clipboard$suffix.js", array(), '2.0.10', 1 );
+	$scripts->add( 'clipboard', "/wp-includes/js/clipboard$suffix.js", array(), '2.0.11', 1 );
 
 	$scripts->add( 'wp-ajax-response', "/wp-includes/js/wp-ajax-response$suffix.js", array( 'jquery', 'wp-a11y' ), false, 1 );
 	did_action( 'init' ) && $scripts->localize(
@@ -750,7 +817,7 @@
 		'wp-api-request',
 		'wpApiSettings',
 		array(
-			'root'          => esc_url_raw( get_rest_url() ),
+			'root'          => sanitize_url( get_rest_url() ),
 			'nonce'         => wp_installing() ? '' : wp_create_nonce( 'wp_rest' ),
 			'versionString' => 'wp/v2/',
 		)
@@ -780,6 +847,9 @@
 
 	$scripts->add( 'wp-lists', "/wp-includes/js/wp-lists$suffix.js", array( 'wp-ajax-response', 'jquery-color' ), false, 1 );
 
+	$scripts->add( 'site-icon', '/wp-admin/js/site-icon.js', array( 'jquery' ), false, 1 );
+	$scripts->set_translations( 'site-icon' );
+
 	// WordPress no longer uses or bundles Prototype or script.aculo.us. These are now pulled from an external source.
 	$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' );
@@ -794,80 +864,72 @@
 	// Not used in core, replaced by Jcrop.js.
 	$scripts->add( 'cropper', '/wp-includes/js/crop/cropper.js', array( 'scriptaculous-dragdrop' ) );
 
-	// jQuery.
-	// The unminified jquery.js and jquery-migrate.js are included to facilitate debugging.
-	$scripts->add( 'jquery', false, array( 'jquery-core', 'jquery-migrate' ), '3.6.0' );
-	$scripts->add( 'jquery-core', "/wp-includes/js/jquery/jquery$suffix.js", array(), '3.6.0' );
-	$scripts->add( 'jquery-migrate', "/wp-includes/js/jquery/jquery-migrate$suffix.js", array(), '3.3.2' );
-
-	// Full jQuery UI.
-	// The build process in 1.12.1 has changed significantly.
-	// In order to keep backwards compatibility, and to keep the optimized loading,
-	// the source files were flattened and included with some modifications for AMD loading.
-	// A notable change is that 'jquery-ui-core' now contains 'jquery-ui-position' and 'jquery-ui-widget'.
-	$scripts->add( 'jquery-ui-core', "/wp-includes/js/jquery/ui/core$suffix.js", array( 'jquery' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-core', "/wp-includes/js/jquery/ui/effect$suffix.js", array( 'jquery' ), '1.13.1', 1 );
-
-	$scripts->add( 'jquery-effects-blind', "/wp-includes/js/jquery/ui/effect-blind$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-bounce', "/wp-includes/js/jquery/ui/effect-bounce$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-clip', "/wp-includes/js/jquery/ui/effect-clip$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-drop', "/wp-includes/js/jquery/ui/effect-drop$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-explode', "/wp-includes/js/jquery/ui/effect-explode$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-fade', "/wp-includes/js/jquery/ui/effect-fade$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-fold', "/wp-includes/js/jquery/ui/effect-fold$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-highlight', "/wp-includes/js/jquery/ui/effect-highlight$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-puff', "/wp-includes/js/jquery/ui/effect-puff$suffix.js", array( 'jquery-effects-core', 'jquery-effects-scale' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-pulsate', "/wp-includes/js/jquery/ui/effect-pulsate$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-scale', "/wp-includes/js/jquery/ui/effect-scale$suffix.js", array( 'jquery-effects-core', 'jquery-effects-size' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-shake', "/wp-includes/js/jquery/ui/effect-shake$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-size', "/wp-includes/js/jquery/ui/effect-size$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-slide', "/wp-includes/js/jquery/ui/effect-slide$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-effects-transfer', "/wp-includes/js/jquery/ui/effect-transfer$suffix.js", array( 'jquery-effects-core' ), '1.13.1', 1 );
+	/*
+	 * jQuery.
+	 * The unminified jquery.js and jquery-migrate.js are included to facilitate debugging.
+	 */
+	$scripts->add( 'jquery', false, array( 'jquery-core', 'jquery-migrate' ), '3.7.1' );
+	$scripts->add( 'jquery-core', "/wp-includes/js/jquery/jquery$suffix.js", array(), '3.7.1' );
+	$scripts->add( 'jquery-migrate', "/wp-includes/js/jquery/jquery-migrate$suffix.js", array(), '3.4.1' );
+
+	/*
+	 * Full jQuery UI.
+	 * The build process in 1.12.1 has changed significantly.
+	 * In order to keep backwards compatibility, and to keep the optimized loading,
+	 * the source files were flattened and included with some modifications for AMD loading.
+	 * A notable change is that 'jquery-ui-core' now contains 'jquery-ui-position' and 'jquery-ui-widget'.
+	 */
+	$scripts->add( 'jquery-ui-core', "/wp-includes/js/jquery/ui/core$suffix.js", array( 'jquery' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-core', "/wp-includes/js/jquery/ui/effect$suffix.js", array( 'jquery' ), '1.13.3', 1 );
+
+	$scripts->add( 'jquery-effects-blind', "/wp-includes/js/jquery/ui/effect-blind$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-bounce', "/wp-includes/js/jquery/ui/effect-bounce$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-clip', "/wp-includes/js/jquery/ui/effect-clip$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-drop', "/wp-includes/js/jquery/ui/effect-drop$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-explode', "/wp-includes/js/jquery/ui/effect-explode$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-fade', "/wp-includes/js/jquery/ui/effect-fade$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-fold', "/wp-includes/js/jquery/ui/effect-fold$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-highlight', "/wp-includes/js/jquery/ui/effect-highlight$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-puff', "/wp-includes/js/jquery/ui/effect-puff$suffix.js", array( 'jquery-effects-core', 'jquery-effects-scale' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-pulsate', "/wp-includes/js/jquery/ui/effect-pulsate$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-scale', "/wp-includes/js/jquery/ui/effect-scale$suffix.js", array( 'jquery-effects-core', 'jquery-effects-size' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-shake', "/wp-includes/js/jquery/ui/effect-shake$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-size', "/wp-includes/js/jquery/ui/effect-size$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-slide', "/wp-includes/js/jquery/ui/effect-slide$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-effects-transfer', "/wp-includes/js/jquery/ui/effect-transfer$suffix.js", array( 'jquery-effects-core' ), '1.13.3', 1 );
 
 	// Widgets
-	$scripts->add( 'jquery-ui-accordion', "/wp-includes/js/jquery/ui/accordion$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-autocomplete', "/wp-includes/js/jquery/ui/autocomplete$suffix.js", array( 'jquery-ui-menu', 'wp-a11y' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-button', "/wp-includes/js/jquery/ui/button$suffix.js", array( 'jquery-ui-core', 'jquery-ui-controlgroup', 'jquery-ui-checkboxradio' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-datepicker', "/wp-includes/js/jquery/ui/datepicker$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-dialog', "/wp-includes/js/jquery/ui/dialog$suffix.js", array( 'jquery-ui-resizable', 'jquery-ui-draggable', 'jquery-ui-button' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-menu', "/wp-includes/js/jquery/ui/menu$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-mouse', "/wp-includes/js/jquery/ui/mouse$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-progressbar', "/wp-includes/js/jquery/ui/progressbar$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-selectmenu', "/wp-includes/js/jquery/ui/selectmenu$suffix.js", array( 'jquery-ui-menu' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-slider', "/wp-includes/js/jquery/ui/slider$suffix.js", array( 'jquery-ui-mouse' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-spinner', "/wp-includes/js/jquery/ui/spinner$suffix.js", array( 'jquery-ui-button' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-tabs', "/wp-includes/js/jquery/ui/tabs$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-tooltip', "/wp-includes/js/jquery/ui/tooltip$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
+	$scripts->add( 'jquery-ui-accordion', "/wp-includes/js/jquery/ui/accordion$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-autocomplete', "/wp-includes/js/jquery/ui/autocomplete$suffix.js", array( 'jquery-ui-menu', 'wp-a11y' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-button', "/wp-includes/js/jquery/ui/button$suffix.js", array( 'jquery-ui-core', 'jquery-ui-controlgroup', 'jquery-ui-checkboxradio' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-datepicker', "/wp-includes/js/jquery/ui/datepicker$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-dialog', "/wp-includes/js/jquery/ui/dialog$suffix.js", array( 'jquery-ui-resizable', 'jquery-ui-draggable', 'jquery-ui-button' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-menu', "/wp-includes/js/jquery/ui/menu$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-mouse', "/wp-includes/js/jquery/ui/mouse$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-progressbar', "/wp-includes/js/jquery/ui/progressbar$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-selectmenu', "/wp-includes/js/jquery/ui/selectmenu$suffix.js", array( 'jquery-ui-menu' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-slider', "/wp-includes/js/jquery/ui/slider$suffix.js", array( 'jquery-ui-mouse' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-spinner', "/wp-includes/js/jquery/ui/spinner$suffix.js", array( 'jquery-ui-button' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-tabs', "/wp-includes/js/jquery/ui/tabs$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-tooltip', "/wp-includes/js/jquery/ui/tooltip$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
 
 	// New in 1.12.1
-	$scripts->add( 'jquery-ui-checkboxradio', "/wp-includes/js/jquery/ui/checkboxradio$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-controlgroup', "/wp-includes/js/jquery/ui/controlgroup$suffix.js", array( 'jquery-ui-core' ), '1.13.1', 1 );
+	$scripts->add( 'jquery-ui-checkboxradio', "/wp-includes/js/jquery/ui/checkboxradio$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-controlgroup', "/wp-includes/js/jquery/ui/controlgroup$suffix.js", array( 'jquery-ui-core' ), '1.13.3', 1 );
 
 	// Interactions
-	$scripts->add( 'jquery-ui-draggable', "/wp-includes/js/jquery/ui/draggable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-droppable', "/wp-includes/js/jquery/ui/droppable$suffix.js", array( 'jquery-ui-draggable' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-resizable', "/wp-includes/js/jquery/ui/resizable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-selectable', "/wp-includes/js/jquery/ui/selectable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-sortable', "/wp-includes/js/jquery/ui/sortable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.1', 1 );
-
-	// As of 1.12.1 `jquery-ui-position` and `jquery-ui-widget` are part of `jquery-ui-core`.
-	// Listed here for back-compat.
-	$scripts->add( 'jquery-ui-position', false, array( 'jquery-ui-core' ), '1.13.1', 1 );
-	$scripts->add( 'jquery-ui-widget', false, array( 'jquery-ui-core' ), '1.13.1', 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.' ),
-		)
-	);
+	$scripts->add( 'jquery-ui-draggable', "/wp-includes/js/jquery/ui/draggable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-droppable', "/wp-includes/js/jquery/ui/droppable$suffix.js", array( 'jquery-ui-draggable' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-resizable', "/wp-includes/js/jquery/ui/resizable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-selectable', "/wp-includes/js/jquery/ui/selectable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-sortable', "/wp-includes/js/jquery/ui/sortable$suffix.js", array( 'jquery-ui-mouse' ), '1.13.3', 1 );
+
+	/*
+	 * As of 1.12.1 `jquery-ui-position` and `jquery-ui-widget` are part of `jquery-ui-core`.
+	 * Listed here for back-compat.
+	 */
+	$scripts->add( 'jquery-ui-position', false, array( 'jquery-ui-core' ), '1.13.3', 1 );
+	$scripts->add( 'jquery-ui-widget', false, array( 'jquery-ui-core' ), '1.13.3', 1 );
 
 	// 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' ), '4.3.0', 1 );
@@ -884,9 +946,11 @@
 	// Not used any more, registered for backward 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( 'imagesloaded', '/wp-includes/js/imagesloaded.min.js', array(), '4.1.4', 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( 'imagesloaded', '/wp-includes/js/imagesloaded.min.js', array(), '5.0.0', 1 );
 	$scripts->add( 'masonry', '/wp-includes/js/masonry.min.js', array( 'imagesloaded' ), '4.2.2', 1 );
 	$scripts->add( 'jquery-masonry', '/wp-includes/js/jquery/jquery.masonry.min.js', array( 'jquery', 'masonry' ), '3.1.2b', 1 );
 
@@ -964,12 +1028,13 @@
 	did_action( 'init' ) && $scripts->localize( 'swfupload-handlers', 'swfuploadL10n', $uploader_l10n );
 
 	$scripts->add( 'comment-reply', "/wp-includes/js/comment-reply$suffix.js", array(), false, 1 );
+	did_action( 'init' ) && $scripts->add_data( 'comment-reply', 'strategy', 'async' );
 
 	$scripts->add( 'json2', "/wp-includes/js/json2$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(), '1.13.3', 1 );
-	$scripts->add( 'backbone', "/wp-includes/js/backbone$dev_suffix.js", array( 'underscore', 'jquery' ), '1.4.1', 1 );
+	$scripts->add( 'underscore', "/wp-includes/js/underscore$dev_suffix.js", array(), '1.13.4', 1 );
+	$scripts->add( 'backbone', "/wp-includes/js/backbone$dev_suffix.js", array( 'underscore', 'jquery' ), '1.5.0', 1 );
 
 	$scripts->add( 'wp-util', "/wp-includes/js/wp-util$suffix.js", array( 'underscore', 'jquery' ), false, 1 );
 	did_action( 'init' ) && $scripts->localize(
@@ -988,8 +1053,8 @@
 
 	$scripts->add( 'imgareaselect', "/wp-includes/js/imgareaselect/jquery.imgareaselect$suffix.js", array( 'jquery' ), false, 1 );
 
-	$scripts->add( 'mediaelement', false, array( 'jquery', 'mediaelement-core', 'mediaelement-migrate' ), '4.2.16', 1 );
-	$scripts->add( 'mediaelement-core', "/wp-includes/js/mediaelement/mediaelement-and-player$suffix.js", array(), '4.2.16', 1 );
+	$scripts->add( 'mediaelement', false, array( 'jquery', 'mediaelement-core', 'mediaelement-migrate' ), '4.2.17', 1 );
+	$scripts->add( 'mediaelement-core', "/wp-includes/js/mediaelement/mediaelement-and-player$suffix.js", array(), '4.2.17', 1 );
 	$scripts->add( 'mediaelement-migrate', "/wp-includes/js/mediaelement/mediaelement-migrate$suffix.js", array(), false, 1 );
 
 	did_action( 'init' ) && $scripts->add_inline_script(
@@ -1079,12 +1144,16 @@
 		'before'
 	);
 
-	$scripts->add( 'mediaelement-vimeo', '/wp-includes/js/mediaelement/renderers/vimeo.min.js', array( 'mediaelement' ), '4.2.16', 1 );
+	$scripts->add( 'mediaelement-vimeo', '/wp-includes/js/mediaelement/renderers/vimeo.min.js', array( 'mediaelement' ), '4.2.17', 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',
+		'pluginPath'            => includes_url( 'js/mediaelement/', 'relative' ),
+		'classPrefix'           => 'mejs-',
+		'stretching'            => 'responsive',
+		/** This filter is documented in wp-includes/media.php */
+		'audioShortcodeLibrary' => apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ),
+		/** This filter is documented in wp-includes/media.php */
+		'videoShortcodeLibrary' => apply_filters( 'wp_video_shortcode_library', 'mediaelement' ),
 	);
 	did_action( 'init' ) && $scripts->localize(
 		'mediaelement',
@@ -1107,7 +1176,7 @@
 	$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( 'common', 'wp-util', 'wp-sanitize', 'jquery', 'jquery-ui-core', 'wp-a11y', 'underscore' ) );
+	$scripts->add( 'wp-theme-plugin-editor', "/wp-admin/js/theme-plugin-editor$suffix.js", array( 'common', 'wp-util', 'wp-sanitize', 'jquery', 'jquery-ui-core', 'wp-a11y', 'underscore' ), false, 1 );
 	$scripts->set_translations( 'wp-theme-plugin-editor' );
 
 	$scripts->add( 'wp-playlist', "/wp-includes/js/mediaelement/wp-playlist$suffix.js", array( 'wp-util', 'backbone', 'mediaelement' ), false, 1 );
@@ -1136,6 +1205,9 @@
 	);
 	$scripts->set_translations( 'password-strength-meter' );
 
+	$scripts->add( 'password-toggle', "/wp-admin/js/password-toggle$suffix.js", array(), false, 1 );
+	$scripts->set_translations( 'password-toggle' );
+
 	$scripts->add( 'application-passwords', "/wp-admin/js/application-passwords$suffix.js", array( 'jquery', 'wp-util', 'wp-api-request', 'wp-date', 'wp-i18n', 'wp-hooks' ), false, 1 );
 	$scripts->set_translations( 'application-passwords' );
 
@@ -1160,7 +1232,8 @@
 
 	$scripts->add( 'admin-bar', "/wp-includes/js/admin-bar$suffix.js", array( 'hoverintent-js' ), false, 1 );
 
-	$scripts->add( 'wplink', "/wp-includes/js/wplink$suffix.js", array( 'jquery', 'wp-a11y' ), false, 1 );
+	$scripts->add( 'wplink', "/wp-includes/js/wplink$suffix.js", array( 'common', 'jquery', 'wp-a11y', 'wp-i18n' ), false, 1 );
+	$scripts->set_translations( 'wplink' );
 	did_action( 'init' ) && $scripts->localize(
 		'wplink',
 		'wpLinkL10n',
@@ -1263,8 +1336,8 @@
 			'invalidValue'            => __( 'Invalid value.' ),
 			'blockThemeNotification'  => sprintf(
 				/* translators: 1: Link to Site Editor documentation on HelpHub, 2: HTML button. */
-				__( 'Hurray! Your theme supports Full Site Editing with blocks. <a href="%1$s">Tell me more</a>. %2$s' ),
-				__( 'https://wordpress.org/support/article/site-editor/' ),
+				__( 'Hurray! Your theme supports site editing with blocks. <a href="%1$s">Tell me more</a>. %2$s' ),
+				__( 'https://wordpress.org/documentation/article/site-editor/' ),
 				sprintf(
 					'<button type="button" data-action="%1$s" class="button switch-to-editor">%2$s</button>',
 					esc_url( admin_url( 'site-editor.php' ) ),
@@ -1298,10 +1371,13 @@
 		)
 	);
 
-	$scripts->add( 'wp-embed', "/wp-includes/js/wp-embed$suffix.js", array(), false, 1 );
-
-	// To enqueue media-views or media-editor, call wp_enqueue_media().
-	// Both rely on numerous settings, styles, and templates to operate correctly.
+	$scripts->add( 'wp-embed', "/wp-includes/js/wp-embed$suffix.js" );
+	did_action( 'init' ) && $scripts->add_data( 'wp-embed', 'strategy', 'defer' );
+
+	/*
+	 * 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', 'wp-api-request', 'wp-a11y', 'clipboard' ), false, 1 );
 	$scripts->set_translations( 'media-views' );
 
@@ -1335,7 +1411,7 @@
 		$scripts->add( 'tags-box', "/wp-admin/js/tags-box$suffix.js", array( 'jquery', 'tags-suggest' ), false, 1 );
 		$scripts->set_translations( 'tags-box' );
 
-		$scripts->add( 'tags-suggest', "/wp-admin/js/tags-suggest$suffix.js", array( 'jquery-ui-autocomplete', 'wp-a11y' ), false, 1 );
+		$scripts->add( 'tags-suggest', "/wp-admin/js/tags-suggest$suffix.js", array( 'common', 'jquery-ui-autocomplete', 'wp-a11y', 'wp-i18n' ), false, 1 );
 		$scripts->set_translations( 'tags-suggest' );
 
 		$scripts->add( 'post', "/wp-admin/js/post$suffix.js", array( 'suggest', 'wp-lists', 'postbox', 'tags-box', 'underscore', 'word-count', 'wp-a11y', 'wp-sanitize', 'clipboard' ), false, 1 );
@@ -1450,6 +1526,11 @@
 	require ABSPATH . WPINC . '/version.php';
 
 	if ( ! defined( 'SCRIPT_DEBUG' ) ) {
+		/*
+		 * Note: str_contains() is not used here, as this file can be included
+		 * via wp-admin/load-scripts.php or wp-admin/load-styles.php, in which case
+		 * the polyfills from wp-includes/compat.php are not loaded.
+		 */
 		define( 'SCRIPT_DEBUG', false !== strpos( $wp_version, '-src' ) );
 	}
 
@@ -1542,7 +1623,7 @@
 	// 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-legacy.min.css', array(), '4.2.16' );
+	$styles->add( 'mediaelement', '/wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css', array(), '4.2.17' );
 	$styles->add( 'wp-mediaelement', "/wp-includes/js/mediaelement/wp-mediaelement$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' );
@@ -1583,23 +1664,39 @@
 		array()
 	);
 
+	$styles->add(
+		'wp-block-editor-content',
+		"/wp-includes/css/dist/block-editor/content$suffix.css",
+		array( 'wp-components' )
+	);
+
 	$wp_edit_blocks_dependencies = array(
 		'wp-components',
 		'wp-editor',
-		// This need to be added before the block library styles,
-		// The block library styles override the "reset" styles.
+		/*
+		 * This needs to be added before the block library styles,
+		 * The block library styles override the "reset" styles.
+		 */
 		'wp-reset-editor-styles',
 		'wp-block-library',
 		'wp-reusable-blocks',
+		'wp-block-editor-content',
+		'wp-patterns',
 	);
 
 	// Only load the default layout and margin styles for themes without theme.json file.
-	if ( ! WP_Theme_JSON_Resolver::theme_has_support() ) {
+	if ( ! wp_theme_has_theme_json() ) {
 		$wp_edit_blocks_dependencies[] = 'wp-editor-classic-layout-styles';
 	}
 
-	if ( ! is_array( $editor_styles ) || count( $editor_styles ) === 0 ) {
-		// Include opinionated block styles if no $editor_styles are declared, so the editor never appears broken.
+	if (
+		current_theme_supports( 'wp-block-styles' ) &&
+		( ! is_array( $editor_styles ) || count( $editor_styles ) === 0 )
+	) {
+		/*
+		 * Include opinionated block styles if the theme supports block styles and
+		 * no $editor_styles are declared, so the editor never appears broken.
+		 */
 		$wp_edit_blocks_dependencies[] = 'wp-block-library-theme';
 	}
 
@@ -1610,27 +1707,32 @@
 	);
 
 	$package_styles = array(
-		'block-editor'         => array( 'wp-components' ),
+		'block-editor'         => array( 'wp-components', 'wp-preferences' ),
 		'block-library'        => array(),
 		'block-directory'      => array(),
 		'components'           => array(),
+		'commands'             => array(),
 		'edit-post'            => array(
 			'wp-components',
 			'wp-block-editor',
 			'wp-editor',
 			'wp-edit-blocks',
 			'wp-block-library',
-			'wp-nux',
+			'wp-commands',
+			'wp-preferences',
 		),
 		'editor'               => array(
 			'wp-components',
 			'wp-block-editor',
-			'wp-nux',
 			'wp-reusable-blocks',
+			'wp-patterns',
+			'wp-preferences',
 		),
 		'format-library'       => array(),
 		'list-reusable-blocks' => array( 'wp-components' ),
 		'reusable-blocks'      => array( 'wp-components' ),
+		'patterns'             => array( 'wp-components' ),
+		'preferences'          => array( 'wp-components' ),
 		'nux'                  => array( 'wp-components' ),
 		'widgets'              => array(
 			'wp-components',
@@ -1641,6 +1743,8 @@
 			'wp-edit-blocks',
 			'wp-block-library',
 			'wp-reusable-blocks',
+			'wp-patterns',
+			'wp-preferences',
 		),
 		'customize-widgets'    => array(
 			'wp-widgets',
@@ -1648,11 +1752,15 @@
 			'wp-edit-blocks',
 			'wp-block-library',
 			'wp-reusable-blocks',
+			'wp-patterns',
+			'wp-preferences',
 		),
 		'edit-site'            => array(
 			'wp-components',
 			'wp-block-editor',
 			'wp-edit-blocks',
+			'wp-commands',
+			'wp-preferences',
 		),
 	);
 
@@ -1708,6 +1816,7 @@
 		'wp-block-editor',
 		'wp-block-library',
 		'wp-block-directory',
+		'wp-commands',
 		'wp-components',
 		'wp-customize-widgets',
 		'wp-edit-post',
@@ -1717,6 +1826,7 @@
 		'wp-format-library',
 		'wp-list-reusable-blocks',
 		'wp-reusable-blocks',
+		'wp-patterns',
 		'wp-nux',
 		'wp-widgets',
 		// Deprecated CSS.
@@ -1737,8 +1847,8 @@
  *
  * @since 2.3.1
  *
- * @param array $js_array JavaScript scripts array
- * @return array Reordered array, if needed.
+ * @param string[] $js_array JavaScript scripts array
+ * @return string[] Reordered array, if needed.
  */
 function wp_prototype_before_jquery( $js_array ) {
 	$prototype = array_search( 'prototype', $js_array, true );
@@ -1770,6 +1880,8 @@
  * These localizations require information that may not be loaded even by init.
  *
  * @since 2.5.0
+ *
+ * @global array $shortcode_tags
  */
 function wp_just_in_time_script_localization() {
 
@@ -1794,12 +1906,7 @@
 		'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!' ),
+			'type'       => wp_get_word_count_type(),
 			'shortcodes' => ! empty( $GLOBALS['shortcode_tags'] ) ? array_keys( $GLOBALS['shortcode_tags'] ) : array(),
 		)
 	);
@@ -2323,20 +2430,8 @@
 
 	wp_enqueue_style( 'wp-block-library' );
 
-	if ( current_theme_supports( 'wp-block-styles' ) ) {
-		if ( wp_should_load_separate_core_block_assets() ) {
-			$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? 'css' : 'min.css';
-			$files  = glob( __DIR__ . "/blocks/**/theme.$suffix" );
-			foreach ( $files as $path ) {
-				$block_name = basename( dirname( $path ) );
-				if ( is_rtl() && file_exists( __DIR__ . "/blocks/$block_name/theme-rtl.$suffix" ) ) {
-					$path = __DIR__ . "/blocks/$block_name/theme-rtl.$suffix";
-				}
-				wp_add_inline_style( "wp-block-{$block_name}", file_get_contents( $path ) );
-			}
-		} else {
-			wp_enqueue_style( 'wp-block-library-theme' );
-		}
+	if ( current_theme_supports( 'wp-block-styles' ) && ! wp_should_load_separate_core_block_assets() ) {
+		wp_enqueue_style( 'wp-block-library-theme' );
 	}
 
 	/**
@@ -2353,6 +2448,30 @@
 }
 
 /**
+ * Applies a filter to the list of style nodes that comes from WP_Theme_JSON::get_style_nodes().
+ *
+ * This particular filter removes all of the blocks from the array.
+ *
+ * We want WP_Theme_JSON to be ignorant of the implementation details of how the CSS is being used.
+ * This filter allows us to modify the output of WP_Theme_JSON depending on whether or not we are
+ * loading separate assets, without making the class aware of that detail.
+ *
+ * @since 6.1.0
+ *
+ * @param array $nodes The nodes to filter.
+ * @return array A filtered array of style nodes.
+ */
+function wp_filter_out_block_nodes( $nodes ) {
+	return array_filter(
+		$nodes,
+		static function ( $node ) {
+			return ! in_array( 'blocks', $node['path'], true );
+		},
+		ARRAY_FILTER_USE_BOTH
+	);
+}
+
+/**
  * Enqueues the global styles defined via theme.json.
  *
  * @since 5.8.0
@@ -2376,42 +2495,45 @@
 		return;
 	}
 
+	/*
+	 * If loading the CSS for each block separately, then load the theme.json CSS conditionally.
+	 * This removes the CSS from the global-styles stylesheet and adds it to the inline CSS for each block.
+	 * This filter must be registered before calling wp_get_global_stylesheet();
+	 */
+	add_filter( 'wp_theme_json_get_style_nodes', 'wp_filter_out_block_nodes' );
+
 	$stylesheet = wp_get_global_stylesheet();
 
 	if ( empty( $stylesheet ) ) {
 		return;
 	}
 
-	wp_register_style( 'global-styles', false, array(), true, true );
+	wp_register_style( 'global-styles', false );
 	wp_add_inline_style( 'global-styles', $stylesheet );
 	wp_enqueue_style( 'global-styles' );
+
+	// Add each block as an inline css.
+	wp_add_global_styles_for_blocks();
 }
 
 /**
- * Renders the SVG filters supplied by theme.json.
+ * Enqueues the global styles custom css defined via theme.json.
  *
- * Note that this doesn't render the per-block user-defined
- * filters which are handled by wp_render_duotone_support,
- * but it should be rendered before the filtered content
- * in the body to satisfy Safari's rendering quirks.
- *
- * @since 5.9.1
+ * @since 6.2.0
  */
-function wp_global_styles_render_svg_filters() {
-	/*
-	 * When calling via the in_admin_header action, we only want to render the
-	 * SVGs on block editor pages.
-	 */
-	if (
-		is_admin() &&
-		! get_current_screen()->is_block_editor()
-	) {
+function wp_enqueue_global_styles_custom_css() {
+	if ( ! wp_is_block_theme() ) {
 		return;
 	}
 
-	$filters = wp_get_global_styles_svg_filters();
-	if ( ! empty( $filters ) ) {
-		echo $filters;
+	// Don't enqueue Customizer's custom CSS separately.
+	remove_action( 'wp_head', 'wp_custom_css_cb', 101 );
+
+	$custom_css  = wp_get_custom_css();
+	$custom_css .= wp_get_global_styles_custom_css();
+
+	if ( ! empty( $custom_css ) ) {
+		wp_add_inline_style( 'global-styles', $custom_css );
 	}
 }
 
@@ -2463,7 +2585,7 @@
  * @return bool Whether separate assets will be loaded.
  */
 function wp_should_load_separate_core_block_assets() {
-	if ( is_admin() || is_feed() || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) ) {
+	if ( is_admin() || is_feed() || wp_is_rest_endpoint() ) {
 		return false;
 	}
 
@@ -2496,28 +2618,30 @@
 		return;
 	}
 
-	$load_editor_scripts = is_admin() && wp_should_load_block_editor_scripts_and_styles();
+	$load_editor_scripts_and_styles = is_admin() && wp_should_load_block_editor_scripts_and_styles();
 
 	$block_registry = WP_Block_Type_Registry::get_instance();
 	foreach ( $block_registry->get_all_registered() as $block_name => $block_type ) {
-		// Front-end styles.
-		if ( ! empty( $block_type->style ) ) {
-			wp_enqueue_style( $block_type->style );
+		// Front-end and editor styles.
+		foreach ( $block_type->style_handles as $style_handle ) {
+			wp_enqueue_style( $style_handle );
 		}
 
-		// Front-end script.
-		if ( ! empty( $block_type->script ) ) {
-			wp_enqueue_script( $block_type->script );
+		// Front-end and editor scripts.
+		foreach ( $block_type->script_handles as $script_handle ) {
+			wp_enqueue_script( $script_handle );
 		}
 
-		// Editor styles.
-		if ( $load_editor_scripts && ! empty( $block_type->editor_style ) ) {
-			wp_enqueue_style( $block_type->editor_style );
-		}
-
-		// Editor script.
-		if ( $load_editor_scripts && ! empty( $block_type->editor_script ) ) {
-			wp_enqueue_script( $block_type->editor_script );
+		if ( $load_editor_scripts_and_styles ) {
+			// Editor styles.
+			foreach ( $block_type->editor_style_handles as $editor_style_handle ) {
+				wp_enqueue_style( $editor_style_handle );
+			}
+
+			// Editor scripts.
+			foreach ( $block_type->editor_script_handles as $editor_script_handle ) {
+				wp_enqueue_script( $editor_script_handle );
+			}
 		}
 	}
 }
@@ -2542,7 +2666,7 @@
 				if ( wp_should_load_separate_core_block_assets() ) {
 					add_filter(
 						'render_block',
-						function( $html, $block ) use ( $block_name, $style_properties ) {
+						static function ( $html, $block ) use ( $block_name, $style_properties ) {
 							if ( $block['blockName'] === $block_name ) {
 								wp_enqueue_style( $style_properties['style_handle'] );
 							}
@@ -2604,7 +2728,7 @@
 	$register_script_lines[] = '} )();';
 	$inline_script           = implode( "\n", $register_script_lines );
 
-	wp_register_script( 'wp-block-styles', false, array( 'wp-blocks' ), true, true );
+	wp_register_script( 'wp-block-styles', false, array( 'wp-blocks' ), true, array( 'in_footer' => true ) );
 	wp_add_inline_script( 'wp-block-styles', $inline_script );
 	wp_enqueue_script( 'wp-block-styles' );
 }
@@ -2644,8 +2768,10 @@
 	$html5_script_support = ! is_admin() && ! current_theme_supports( 'html5', 'script' );
 	$attributes_string    = '';
 
-	// If HTML5 script tag is supported, only the attribute name is added
-	// to $attributes_string for entries with a boolean value, and that are true.
+	/*
+	 * If HTML5 script tag is supported, only the attribute name is added
+	 * to $attributes_string for entries with a boolean value, and that are true.
+	 */
 	foreach ( $attributes as $attribute_name => $attribute_value ) {
 		if ( is_bool( $attribute_value ) ) {
 			if ( $attribute_value ) {
@@ -2672,7 +2798,11 @@
  */
 function wp_get_script_tag( $attributes ) {
 	if ( ! isset( $attributes['type'] ) && ! is_admin() && ! current_theme_supports( 'html5', 'script' ) ) {
-		$attributes['type'] = 'text/javascript';
+		// Keep the type attribute as the first for legacy reasons (it has always been this way in core).
+		$attributes = array_merge(
+			array( 'type' => 'text/javascript' ),
+			$attributes
+		);
 	}
 	/**
 	 * Filters attributes to be added to a script tag.
@@ -2703,21 +2833,79 @@
 }
 
 /**
- * Wraps inline JavaScript in `<script>` tag.
+ * Constructs an inline script tag.
  *
  * It is possible to inject attributes in the `<script>` tag via the  {@see 'wp_script_attributes'}  filter.
  * Automatically injects type attribute if needed.
  *
  * @since 5.7.0
  *
- * @param string $javascript Inline JavaScript code.
+ * @param string $data       Data for script tag: JavaScript, importmap, speculationrules, etc.
  * @param array  $attributes Optional. Key-value pairs representing `<script>` tag attributes.
  * @return string String containing inline JavaScript code wrapped around `<script>` tag.
  */
-function wp_get_inline_script_tag( $javascript, $attributes = array() ) {
-	if ( ! isset( $attributes['type'] ) && ! is_admin() && ! current_theme_supports( 'html5', 'script' ) ) {
-		$attributes['type'] = 'text/javascript';
+function wp_get_inline_script_tag( $data, $attributes = array() ) {
+	$is_html5 = current_theme_supports( 'html5', 'script' ) || is_admin();
+	if ( ! isset( $attributes['type'] ) && ! $is_html5 ) {
+		// Keep the type attribute as the first for legacy reasons (it has always been this way in core).
+		$attributes = array_merge(
+			array( 'type' => 'text/javascript' ),
+			$attributes
+		);
 	}
+
+	/*
+	 * XHTML extracts the contents of the SCRIPT element and then the XML parser
+	 * decodes character references and other syntax elements. This can lead to
+	 * misinterpretation of the script contents or invalid XHTML documents.
+	 *
+	 * Wrapping the contents in a CDATA section instructs the XML parser not to
+	 * transform the contents of the SCRIPT element before passing them to the
+	 * JavaScript engine.
+	 *
+	 * Example:
+	 *
+	 *     <script>console.log('&hellip;');</script>
+	 *
+	 *     In an HTML document this would print "&hellip;" to the console,
+	 *     but in an XHTML document it would print "…" to the console.
+	 *
+	 *     <script>console.log('An image is <img> in HTML');</script>
+	 *
+	 *     In an HTML document this would print "An image is <img> in HTML",
+	 *     but it's an invalid XHTML document because it interprets the `<img>`
+	 *     as an empty tag missing its closing `/`.
+	 *
+	 * @see https://www.w3.org/TR/xhtml1/#h-4.8
+	 */
+	if (
+		! $is_html5 &&
+		(
+			! isset( $attributes['type'] ) ||
+			'module' === $attributes['type'] ||
+			str_contains( $attributes['type'], 'javascript' ) ||
+			str_contains( $attributes['type'], 'ecmascript' ) ||
+			str_contains( $attributes['type'], 'jscript' ) ||
+			str_contains( $attributes['type'], 'livescript' )
+		)
+	) {
+		/*
+		 * If the string `]]>` exists within the JavaScript it would break
+		 * out of any wrapping CDATA section added here, so to start, it's
+		 * necessary to escape that sequence which requires splitting the
+		 * content into two CDATA sections wherever it's found.
+		 *
+		 * Note: it's only necessary to escape the closing `]]>` because
+		 * an additional `<![CDATA[` leaves the contents unchanged.
+		 */
+		$data = str_replace( ']]>', ']]]]><![CDATA[>', $data );
+
+		// Wrap the entire escaped script inside a CDATA section.
+		$data = sprintf( "/* <![CDATA[ */\n%s\n/* ]]> */", $data );
+	}
+
+	$data = "\n" . trim( $data, "\n\r " ) . "\n";
+
 	/**
 	 * Filters attributes to be added to a script tag.
 	 *
@@ -2726,28 +2914,26 @@
 	 * @param array  $attributes Key-value pairs representing `<script>` tag attributes.
 	 *                           Only the attribute name is added to the `<script>` tag for
 	 *                           entries with a boolean value, and that are true.
-	 * @param string $javascript Inline JavaScript code.
+	 * @param string $data       Inline data.
 	 */
-	$attributes = apply_filters( 'wp_inline_script_attributes', $attributes, $javascript );
-
-	$javascript = "\n" . trim( $javascript, "\n\r " ) . "\n";
-
-	return sprintf( "<script%s>%s</script>\n", wp_sanitize_script_attributes( $attributes ), $javascript );
+	$attributes = apply_filters( 'wp_inline_script_attributes', $attributes, $data );
+
+	return sprintf( "<script%s>%s</script>\n", wp_sanitize_script_attributes( $attributes ), $data );
 }
 
 /**
- * Prints inline JavaScript wrapped in `<script>` tag.
+ * Prints an inline script tag.
  *
  * It is possible to inject attributes in the `<script>` tag via the  {@see 'wp_script_attributes'}  filter.
  * Automatically injects type attribute if needed.
  *
  * @since 5.7.0
  *
- * @param string $javascript Inline JavaScript code.
+ * @param string $data       Data for script tag: JavaScript, importmap, speculationrules, etc.
  * @param array  $attributes Optional. Key-value pairs representing `<script>` tag attributes.
  */
-function wp_print_inline_script_tag( $javascript, $attributes = array() ) {
-	echo wp_get_inline_script_tag( $javascript, $attributes );
+function wp_print_inline_script_tag( $data, $attributes = array() ) {
+	echo wp_get_inline_script_tag( $data, $attributes );
 }
 
 /**
@@ -2779,12 +2965,21 @@
 
 	// Build an array of styles that have a path defined.
 	foreach ( $wp_styles->queue as $handle ) {
-		if ( wp_styles()->get_data( $handle, 'path' ) && file_exists( $wp_styles->registered[ $handle ]->extra['path'] ) ) {
+		if ( ! isset( $wp_styles->registered[ $handle ] ) ) {
+			continue;
+		}
+		$src  = $wp_styles->registered[ $handle ]->src;
+		$path = $wp_styles->get_data( $handle, 'path' );
+		if ( $path && $src ) {
+			$size = wp_filesize( $path );
+			if ( ! $size ) {
+				continue;
+			}
 			$styles[] = array(
 				'handle' => $handle,
-				'src'    => $wp_styles->registered[ $handle ]->src,
-				'path'   => $wp_styles->registered[ $handle ]->extra['path'],
-				'size'   => filesize( $wp_styles->registered[ $handle ]->extra['path'] ),
+				'src'    => $src,
+				'path'   => $path,
+				'size'   => $size,
 			);
 		}
 	}
@@ -2793,7 +2988,7 @@
 		// Reorder styles array based on size.
 		usort(
 			$styles,
-			static function( $a, $b ) {
+			static function ( $a, $b ) {
 				return ( $a['size'] <= $b['size'] ) ? -1 : 1;
 			}
 		);
@@ -2817,8 +3012,10 @@
 			// Get the styles if we don't already have them.
 			$style['css'] = file_get_contents( $style['path'] );
 
-			// Check if the style contains relative URLs that need to be modified.
-			// URLs relative to the stylesheet's path should be converted to relative to the site's root.
+			/*
+			 * Check if the style contains relative URLs that need to be modified.
+			 * URLs relative to the stylesheet's path should be converted to relative to the site's root.
+			 */
 			$style['css'] = _wp_normalize_relative_css_links( $style['css'], $style['src'] );
 
 			// Set `src` to `false` and add styles inline.
@@ -2846,41 +3043,33 @@
  * @return string The CSS with URLs made relative to the WordPress installation.
  */
 function _wp_normalize_relative_css_links( $css, $stylesheet_url ) {
-	$has_src_results = preg_match_all( '#url\s*\(\s*[\'"]?\s*([^\'"\)]+)#', $css, $src_results );
-	if ( $has_src_results ) {
-		// Loop through the URLs to find relative ones.
-		foreach ( $src_results[1] as $src_index => $src_result ) {
-			// Skip if this is an absolute URL.
-			if ( 0 === strpos( $src_result, 'http' ) || 0 === strpos( $src_result, '//' ) ) {
-				continue;
-			}
-
-			// Skip if the URL is an HTML ID.
-			if ( str_starts_with( $src_result, '#' ) ) {
-				continue;
-			}
-
-			// Skip if the URL is a data URI.
-			if ( str_starts_with( $src_result, 'data:' ) ) {
-				continue;
+	return preg_replace_callback(
+		'#(url\s*\(\s*[\'"]?\s*)([^\'"\)]+)#',
+		static function ( $matches ) use ( $stylesheet_url ) {
+			list( , $prefix, $url ) = $matches;
+
+			// Short-circuit if the URL does not require normalization.
+			if (
+				str_starts_with( $url, 'http:' ) ||
+				str_starts_with( $url, 'https:' ) ||
+				str_starts_with( $url, '//' ) ||
+				str_starts_with( $url, '#' ) ||
+				str_starts_with( $url, 'data:' )
+			) {
+				return $matches[0];
 			}
 
 			// Build the absolute URL.
-			$absolute_url = dirname( $stylesheet_url ) . '/' . $src_result;
+			$absolute_url = dirname( $stylesheet_url ) . '/' . $url;
 			$absolute_url = str_replace( '/./', '/', $absolute_url );
+
 			// Convert to URL related to the site root.
-			$relative_url = wp_make_link_relative( $absolute_url );
-
-			// Replace the URL in the CSS.
-			$css = str_replace(
-				$src_results[0][ $src_index ],
-				str_replace( $src_result, $relative_url, $src_results[0][ $src_index ] ),
-				$css
-			);
-		}
-	}
-
-	return $css;
+			$url = wp_make_link_relative( $absolute_url );
+
+			return $prefix . $url;
+		},
+		$css
+	);
 }
 
 /**
@@ -2889,27 +3078,26 @@
  * @since 5.9.0
  */
 function wp_enqueue_global_styles_css_custom_properties() {
-	wp_register_style( 'global-styles-css-custom-properties', false, array(), true, true );
+	wp_register_style( 'global-styles-css-custom-properties', false );
 	wp_add_inline_style( 'global-styles-css-custom-properties', wp_get_global_stylesheet( array( 'variables' ) ) );
 	wp_enqueue_style( 'global-styles-css-custom-properties' );
 }
 
 /**
- * This function takes care of adding inline styles
- * in the proper place, depending on the theme in use.
+ * Hooks inline styles in the proper place, depending on the active theme.
  *
  * @since 5.9.1
+ * @since 6.1.0 Added the `$priority` parameter.
  *
- * For block themes, it's loaded in the head.
- * For classic ones, it's loaded in the body
- * because the wp_head action happens before
- * the render_block.
+ * For block themes, styles are loaded in the head.
+ * For classic ones, styles are loaded in the body because the wp_head action happens before render_block.
  *
  * @link https://core.trac.wordpress.org/ticket/53494.
  *
- * @param string $style String containing the CSS styles to be added.
+ * @param string $style    String containing the CSS styles to be added.
+ * @param int    $priority To set the priority for the add_action.
  */
-function wp_enqueue_block_support_styles( $style ) {
+function wp_enqueue_block_support_styles( $style, $priority = 10 ) {
 	$action_hook_name = 'wp_footer';
 	if ( wp_is_block_theme() ) {
 		$action_hook_name = 'wp_head';
@@ -2918,8 +3106,79 @@
 		$action_hook_name,
 		static function () use ( $style ) {
 			echo "<style>$style</style>\n";
+		},
+		$priority
+	);
+}
+
+/**
+ * Fetches, processes and compiles stored core styles, then combines and renders them to the page.
+ * Styles are stored via the style engine API.
+ *
+ * @link https://developer.wordpress.org/block-editor/reference-guides/packages/packages-style-engine/
+ *
+ * @since 6.1.0
+ *
+ * @param array $options {
+ *     Optional. An array of options to pass to wp_style_engine_get_stylesheet_from_context().
+ *     Default empty array.
+ *
+ *     @type bool $optimize Whether to optimize the CSS output, e.g., combine rules.
+ *                          Default false.
+ *     @type bool $prettify Whether to add new lines and indents to output.
+ *                          Default to whether the `SCRIPT_DEBUG` constant is defined.
+ * }
+ */
+function wp_enqueue_stored_styles( $options = array() ) {
+	$is_block_theme   = wp_is_block_theme();
+	$is_classic_theme = ! $is_block_theme;
+
+	/*
+	 * For block themes, this function prints stored styles in the header.
+	 * For classic themes, in the footer.
+	 */
+	if (
+		( $is_block_theme && doing_action( 'wp_footer' ) ) ||
+		( $is_classic_theme && doing_action( 'wp_enqueue_scripts' ) )
+	) {
+		return;
+	}
+
+	$core_styles_keys         = array( 'block-supports' );
+	$compiled_core_stylesheet = '';
+	$style_tag_id             = 'core';
+	// Adds comment if code is prettified to identify core styles sections in debugging.
+	$should_prettify = isset( $options['prettify'] ) ? true === $options['prettify'] : defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;
+	foreach ( $core_styles_keys as $style_key ) {
+		if ( $should_prettify ) {
+			$compiled_core_stylesheet .= "/**\n * Core styles: $style_key\n */\n";
 		}
-	);
+		// Chains core store ids to signify what the styles contain.
+		$style_tag_id             .= '-' . $style_key;
+		$compiled_core_stylesheet .= wp_style_engine_get_stylesheet_from_context( $style_key, $options );
+	}
+
+	// Combines Core styles.
+	if ( ! empty( $compiled_core_stylesheet ) ) {
+		wp_register_style( $style_tag_id, false );
+		wp_add_inline_style( $style_tag_id, $compiled_core_stylesheet );
+		wp_enqueue_style( $style_tag_id );
+	}
+
+	// Prints out any other stores registered by themes or otherwise.
+	$additional_stores = WP_Style_Engine_CSS_Rules_Store::get_stores();
+	foreach ( array_keys( $additional_stores ) as $store_name ) {
+		if ( in_array( $store_name, $core_styles_keys, true ) ) {
+			continue;
+		}
+		$styles = wp_style_engine_get_stylesheet_from_context( $store_name, $options );
+		if ( ! empty( $styles ) ) {
+			$key = "wp-style-engine-$store_name";
+			wp_register_style( $key, false );
+			wp_add_inline_style( $key, $styles );
+			wp_enqueue_style( $key );
+		}
+	}
 }
 
 /**
@@ -2932,7 +3191,16 @@
  * @since 5.9.0
  *
  * @param string $block_name The block-name, including namespace.
- * @param array  $args       An array of arguments [handle,src,deps,ver,media].
+ * @param array  $args       {
+ *     An array of arguments. See wp_register_style() for full information about each argument.
+ *
+ *     @type string           $handle The handle for the stylesheet.
+ *     @type string|false     $src    The source URL of the stylesheet.
+ *     @type string[]         $deps   Array of registered stylesheet handles this stylesheet depends on.
+ *     @type string|bool|null $ver    Stylesheet version number.
+ *     @type string           $media  The media for which this stylesheet has been defined.
+ *     @type string|null      $path   Absolute path to the stylesheet, so that it can potentially be inlined.
+ * }
  */
 function wp_enqueue_block_style( $block_name, $args ) {
 	$args = wp_parse_args(
@@ -2954,7 +3222,7 @@
 	 *                        is to ensure the content exists.
 	 * @return string Block content.
 	 */
-	$callback = static function( $content ) use ( $args ) {
+	$callback = static function ( $content ) use ( $args ) {
 		// Register the stylesheet.
 		if ( ! empty( $args['src'] ) ) {
 			wp_register_style( $args['handle'], $args['src'], $args['deps'], $args['ver'], $args['media'] );
@@ -2992,7 +3260,7 @@
 		 * @param array  $block   The full block, including name and attributes.
 		 * @return string Block content.
 		 */
-		$callback_separate = static function( $content, $block ) use ( $block_name, $callback ) {
+		$callback_separate = static function ( $content, $block ) use ( $block_name, $callback ) {
 			if ( ! empty( $block['blockName'] ) && $block_name === $block['blockName'] ) {
 				return $callback( $content );
 			}
@@ -3028,502 +3296,109 @@
 }
 
 /**
- * Runs the theme.json webfonts handler.
+ * Loads classic theme styles on classic themes in the frontend.
  *
- * Using `WP_Theme_JSON_Resolver`, it gets the fonts defined
- * in the `theme.json` for the current selection and style
- * variations, validates the font-face properties, generates
- * the '@font-face' style declarations, and then enqueues the
- * styles for both the editor and front-end.
+ * This is needed for backwards compatibility for button blocks specifically.
  *
- * Design Notes:
- * This is not a public API, but rather an internal handler.
- * A future public Webfonts API will replace this stopgap code.
- *
- * This code design is intentional.
- *    a. It hides the inner-workings.
- *    b. It does not expose API ins or outs for consumption.
- *    c. It only works with a theme's `theme.json`.
+ * @since 6.1.0
+ */
+function wp_enqueue_classic_theme_styles() {
+	if ( ! wp_theme_has_theme_json() ) {
+		$suffix = wp_scripts_get_suffix();
+		wp_register_style( 'classic-theme-styles', '/' . WPINC . "/css/classic-themes$suffix.css" );
+		wp_style_add_data( 'classic-theme-styles', 'path', ABSPATH . WPINC . "/css/classic-themes$suffix.css" );
+		wp_enqueue_style( 'classic-theme-styles' );
+	}
+}
+
+/**
+ * Loads classic theme styles on classic themes in the editor.
  *
- * Why?
- *    a. To avoid backwards-compatibility issues when
- *       the Webfonts API is introduced in Core.
- *    b. To make `fontFace` declarations in `theme.json` work.
+ * This is needed for backwards compatibility for button blocks specifically.
  *
- * @link  https://github.com/WordPress/gutenberg/issues/40472
+ * @since 6.1.0
  *
- * @since 6.0.0
- * @access private
+ * @param array $editor_settings The array of editor settings.
+ * @return array A filtered array of editor settings.
  */
-function _wp_theme_json_webfonts_handler() {
-	// Block themes are unavailable during installation.
-	if ( wp_installing() ) {
-		return;
+function wp_add_editor_classic_theme_styles( $editor_settings ) {
+	if ( wp_theme_has_theme_json() ) {
+		return $editor_settings;
 	}
 
-	// Webfonts to be processed.
-	$registered_webfonts = array();
-
-	/**
-	 * Gets the webfonts from theme.json.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @return array Array of defined webfonts.
+	$suffix               = wp_scripts_get_suffix();
+	$classic_theme_styles = ABSPATH . WPINC . "/css/classic-themes$suffix.css";
+
+	/*
+	 * This follows the pattern of get_block_editor_theme_styles,
+	 * but we can't use get_block_editor_theme_styles directly as it
+	 * only handles external files or theme files.
 	 */
-	$fn_get_webfonts_from_theme_json = static function() {
-		// Get settings from theme.json.
-		$settings = WP_Theme_JSON_Resolver::get_merged_data()->get_settings();
-
-		// If in the editor, add webfonts defined in variations.
-		if ( is_admin() || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) ) {
-			$variations = WP_Theme_JSON_Resolver::get_style_variations();
-			foreach ( $variations as $variation ) {
-				// Skip if fontFamilies are not defined in the variation.
-				if ( empty( $variation['settings']['typography']['fontFamilies'] ) ) {
-					continue;
-				}
-
-				// Initialize the array structure.
-				if ( empty( $settings['typography'] ) ) {
-					$settings['typography'] = array();
-				}
-				if ( empty( $settings['typography']['fontFamilies'] ) ) {
-					$settings['typography']['fontFamilies'] = array();
-				}
-				if ( empty( $settings['typography']['fontFamilies']['theme'] ) ) {
-					$settings['typography']['fontFamilies']['theme'] = array();
-				}
-
-				// Combine variations with settings. Remove duplicates.
-				$settings['typography']['fontFamilies']['theme'] = array_merge( $settings['typography']['fontFamilies']['theme'], $variation['settings']['typography']['fontFamilies']['theme'] );
-				$settings['typography']['fontFamilies']          = array_unique( $settings['typography']['fontFamilies'] );
-			}
-		}
-
-		// Bail out early if there are no settings for webfonts.
-		if ( empty( $settings['typography']['fontFamilies'] ) ) {
-			return array();
-		}
-
-		$webfonts = array();
-
-		// Look for fontFamilies.
-		foreach ( $settings['typography']['fontFamilies'] as $font_families ) {
-			foreach ( $font_families as $font_family ) {
-
-				// Skip if fontFace is not defined.
-				if ( empty( $font_family['fontFace'] ) ) {
-					continue;
-				}
-
-				// Skip if fontFace is not an array of webfonts.
-				if ( ! is_array( $font_family['fontFace'] ) ) {
-					continue;
-				}
-
-				$webfonts = array_merge( $webfonts, $font_family['fontFace'] );
-			}
-		}
-
-		return $webfonts;
-	};
-
-	/**
-	 * Transforms each 'src' into an URI by replacing 'file:./'
-	 * placeholder from theme.json.
-	 *
-	 * The absolute path to the webfont file(s) cannot be defined in
-	 * theme.json. `file:./` is the placeholder which is replaced by
-	 * the theme's URL path to the theme's root.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @param array $src Webfont file(s) `src`.
-	 * @return array Webfont's `src` in URI.
-	 */
-	$fn_transform_src_into_uri = static function( array $src ) {
-		foreach ( $src as $key => $url ) {
-			// Tweak the URL to be relative to the theme root.
-			if ( ! str_starts_with( $url, 'file:./' ) ) {
-				continue;
-			}
-
-			$src[ $key ] = get_theme_file_uri( str_replace( 'file:./', '', $url ) );
-		}
-
-		return $src;
-	};
-
-	/**
-	 * Converts the font-face properties (i.e. keys) into kebab-case.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @param array $font_face Font face to convert.
-	 * @return array Font faces with each property in kebab-case format.
-	 */
-	$fn_convert_keys_to_kebab_case = static function( array $font_face ) {
-		foreach ( $font_face as $property => $value ) {
-			$kebab_case               = _wp_to_kebab_case( $property );
-			$font_face[ $kebab_case ] = $value;
-			if ( $kebab_case !== $property ) {
-				unset( $font_face[ $property ] );
-			}
-		}
-
-		return $font_face;
-	};
-
-	/**
-	 * Validates a webfont.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @param array $webfont The webfont arguments.
-	 * @return array|false The validated webfont arguments, or false if the webfont is invalid.
-	 */
-	$fn_validate_webfont = static function( $webfont ) {
-		$webfont = wp_parse_args(
-			$webfont,
-			array(
-				'font-family'  => '',
-				'font-style'   => 'normal',
-				'font-weight'  => '400',
-				'font-display' => 'fallback',
-				'src'          => array(),
+	$classic_theme_styles_settings = array(
+		'css'            => file_get_contents( $classic_theme_styles ),
+		'__unstableType' => 'core',
+		'isGlobalStyles' => false,
+	);
+
+	// Add these settings to the start of the array so that themes can override them.
+	array_unshift( $editor_settings['styles'], $classic_theme_styles_settings );
+
+	return $editor_settings;
+}
+
+/**
+ * Removes leading and trailing _empty_ script tags.
+ *
+ * This is a helper meant to be used for literal script tag construction
+ * within `wp_get_inline_script_tag()` or `wp_print_inline_script_tag()`.
+ * It removes the literal values of "<script>" and "</script>" from
+ * around an inline script after trimming whitespace. Typically this
+ * is used in conjunction with output buffering, where `ob_get_clean()`
+ * is passed as the `$contents` argument.
+ *
+ * Example:
+ *
+ *     // Strips exact literal empty SCRIPT tags.
+ *     $js = '<script>sayHello();</script>;
+ *     'sayHello();' === wp_remove_surrounding_empty_script_tags( $js );
+ *
+ *     // Otherwise if anything is different it warns in the JS console.
+ *     $js = '<script type="text/javascript">console.log( "hi" );</script>';
+ *     'console.error( ... )' === wp_remove_surrounding_empty_script_tags( $js );
+ *
+ * @since 6.4.0
+ * @access private
+ *
+ * @see wp_print_inline_script_tag()
+ * @see wp_get_inline_script_tag()
+ *
+ * @param string $contents Script body with manually created SCRIPT tag literals.
+ * @return string Script body without surrounding script tag literals, or
+ *                original contents if both exact literals aren't present.
+ */
+function wp_remove_surrounding_empty_script_tags( $contents ) {
+	$contents = trim( $contents );
+	$opener   = '<SCRIPT>';
+	$closer   = '</SCRIPT>';
+
+	if (
+		strlen( $contents ) > strlen( $opener ) + strlen( $closer ) &&
+		strtoupper( substr( $contents, 0, strlen( $opener ) ) ) === $opener &&
+		strtoupper( substr( $contents, -strlen( $closer ) ) ) === $closer
+	) {
+		return substr( $contents, strlen( $opener ), -strlen( $closer ) );
+	} else {
+		$error_message = __( 'Expected string to start with script tag (without attributes) and end with script tag, with optional whitespace.' );
+		_doing_it_wrong( __FUNCTION__, $error_message, '6.4' );
+		return sprintf(
+			'console.error(%s)',
+			wp_json_encode(
+				sprintf(
+					/* translators: %s: wp_remove_surrounding_empty_script_tags() */
+					__( 'Function %s used incorrectly in PHP.' ),
+					'wp_remove_surrounding_empty_script_tags()'
+				) . ' ' . $error_message
 			)
 		);
-
-		// Check the font-family.
-		if ( empty( $webfont['font-family'] ) || ! is_string( $webfont['font-family'] ) ) {
-			trigger_error( __( 'Webfont font family must be a non-empty string.' ) );
-
-			return false;
-		}
-
-		// Check that the `src` property is defined and a valid type.
-		if ( empty( $webfont['src'] ) || ( ! is_string( $webfont['src'] ) && ! is_array( $webfont['src'] ) ) ) {
-			trigger_error( __( 'Webfont src must be a non-empty string or an array of strings.' ) );
-
-			return false;
-		}
-
-		// Validate the `src` property.
-		foreach ( (array) $webfont['src'] as $src ) {
-			if ( ! is_string( $src ) || '' === trim( $src ) ) {
-				trigger_error( __( 'Each webfont src must be a non-empty string.' ) );
-
-				return false;
-			}
-		}
-
-		// Check the font-weight.
-		if ( ! is_string( $webfont['font-weight'] ) && ! is_int( $webfont['font-weight'] ) ) {
-			trigger_error( __( 'Webfont font weight must be a properly formatted string or integer.' ) );
-
-			return false;
-		}
-
-		// Check the font-display.
-		if ( ! in_array( $webfont['font-display'], array( 'auto', 'block', 'fallback', 'swap' ), true ) ) {
-			$webfont['font-display'] = 'fallback';
-		}
-
-		$valid_props = array(
-			'ascend-override',
-			'descend-override',
-			'font-display',
-			'font-family',
-			'font-stretch',
-			'font-style',
-			'font-weight',
-			'font-variant',
-			'font-feature-settings',
-			'font-variation-settings',
-			'line-gap-override',
-			'size-adjust',
-			'src',
-			'unicode-range',
-		);
-
-		foreach ( $webfont as $prop => $value ) {
-			if ( ! in_array( $prop, $valid_props, true ) ) {
-				unset( $webfont[ $prop ] );
-			}
-		}
-
-		return $webfont;
-	};
-
-	/**
-	 * Registers webfonts declared in theme.json.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @uses $registered_webfonts To access and update the registered webfonts registry (passed by reference).
-	 * @uses $fn_get_webfonts_from_theme_json To run the function that gets the webfonts from theme.json.
-	 * @uses $fn_convert_keys_to_kebab_case To run the function that converts keys into kebab-case.
-	 * @uses $fn_validate_webfont To run the function that validates each font-face (webfont) from theme.json.
-	 */
-	$fn_register_webfonts = static function() use ( &$registered_webfonts, $fn_get_webfonts_from_theme_json, $fn_convert_keys_to_kebab_case, $fn_validate_webfont, $fn_transform_src_into_uri ) {
-		$registered_webfonts = array();
-
-		foreach ( $fn_get_webfonts_from_theme_json() as $webfont ) {
-			if ( ! is_array( $webfont ) ) {
-				continue;
-			}
-
-			$webfont = $fn_convert_keys_to_kebab_case( $webfont );
-
-			$webfont = $fn_validate_webfont( $webfont );
-
-			$webfont['src'] = $fn_transform_src_into_uri( (array) $webfont['src'] );
-
-			// Skip if not valid.
-			if ( empty( $webfont ) ) {
-				continue;
-			}
-
-			$registered_webfonts[] = $webfont;
-		}
-	};
-
-	/**
-	 * Orders 'src' items to optimize for browser support.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @param array $webfont Webfont to process.
-	 * @return array Ordered `src` items.
-	 */
-	$fn_order_src = static function( array $webfont ) {
-		$src         = array();
-		$src_ordered = array();
-
-		foreach ( $webfont['src'] as $url ) {
-			// Add data URIs first.
-			if ( str_starts_with( trim( $url ), 'data:' ) ) {
-				$src_ordered[] = array(
-					'url'    => $url,
-					'format' => 'data',
-				);
-				continue;
-			}
-			$format         = pathinfo( $url, PATHINFO_EXTENSION );
-			$src[ $format ] = $url;
-		}
-
-		// Add woff2.
-		if ( ! empty( $src['woff2'] ) ) {
-			$src_ordered[] = array(
-				'url'    => sanitize_url( $src['woff2'] ),
-				'format' => 'woff2',
-			);
-		}
-
-		// Add woff.
-		if ( ! empty( $src['woff'] ) ) {
-			$src_ordered[] = array(
-				'url'    => sanitize_url( $src['woff'] ),
-				'format' => 'woff',
-			);
-		}
-
-		// Add ttf.
-		if ( ! empty( $src['ttf'] ) ) {
-			$src_ordered[] = array(
-				'url'    => sanitize_url( $src['ttf'] ),
-				'format' => 'truetype',
-			);
-		}
-
-		// Add eot.
-		if ( ! empty( $src['eot'] ) ) {
-			$src_ordered[] = array(
-				'url'    => sanitize_url( $src['eot'] ),
-				'format' => 'embedded-opentype',
-			);
-		}
-
-		// Add otf.
-		if ( ! empty( $src['otf'] ) ) {
-			$src_ordered[] = array(
-				'url'    => sanitize_url( $src['otf'] ),
-				'format' => 'opentype',
-			);
-		}
-		$webfont['src'] = $src_ordered;
-
-		return $webfont;
-	};
-
-	/**
-	 * Compiles the 'src' into valid CSS.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @param string $font_family Font family.
-	 * @param array  $value       Value to process.
-	 * @return string The CSS.
-	 */
-	$fn_compile_src = static function( $font_family, array $value ) {
-		$src = "local($font_family)";
-
-		foreach ( $value as $item ) {
-
-			if (
-				str_starts_with( $item['url'], site_url() ) ||
-				str_starts_with( $item['url'], home_url() )
-			) {
-				$item['url'] = wp_make_link_relative( $item['url'] );
-			}
-
-			$src .= ( 'data' === $item['format'] )
-				? ", url({$item['url']})"
-				: ", url('{$item['url']}') format('{$item['format']}')";
-		}
-
-		return $src;
-	};
-
-	/**
-	 * Compiles the font variation settings.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @param array $font_variation_settings Array of font variation settings.
-	 * @return string The CSS.
-	 */
-	$fn_compile_variations = static function( array $font_variation_settings ) {
-		$variations = '';
-
-		foreach ( $font_variation_settings as $key => $value ) {
-			$variations .= "$key $value";
-		}
-
-		return $variations;
-	};
-
-	/**
-	 * Builds the font-family's CSS.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @uses $fn_compile_src To run the function that compiles the src.
-	 * @uses $fn_compile_variations To run the function that compiles the variations.
-	 *
-	 * @param array $webfont Webfont to process.
-	 * @return string This font-family's CSS.
-	 */
-	$fn_build_font_face_css = static function( array $webfont ) use ( $fn_compile_src, $fn_compile_variations ) {
-		$css = '';
-
-		// Wrap font-family in quotes if it contains spaces.
-		if (
-			str_contains( $webfont['font-family'], ' ' ) &&
-			! str_contains( $webfont['font-family'], '"' ) &&
-			! str_contains( $webfont['font-family'], "'" )
-		) {
-			$webfont['font-family'] = '"' . $webfont['font-family'] . '"';
-		}
-
-		foreach ( $webfont as $key => $value ) {
-			/*
-			 * Skip "provider", since it's for internal API use,
-			 * and not a valid CSS property.
-			 */
-			if ( 'provider' === $key ) {
-				continue;
-			}
-
-			// Compile the "src" parameter.
-			if ( 'src' === $key ) {
-				$value = $fn_compile_src( $webfont['font-family'], $value );
-			}
-
-			// If font-variation-settings is an array, convert it to a string.
-			if ( 'font-variation-settings' === $key && is_array( $value ) ) {
-				$value = $fn_compile_variations( $value );
-			}
-
-			if ( ! empty( $value ) ) {
-				$css .= "$key:$value;";
-			}
-		}
-
-		return $css;
-	};
-
-	/**
-	 * Gets the '@font-face' CSS styles for locally-hosted font files.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @uses $registered_webfonts To access and update the registered webfonts registry (passed by reference).
-	 * @uses $fn_order_src To run the function that orders the src.
-	 * @uses $fn_build_font_face_css To run the function that builds the font-face CSS.
-	 *
-	 * @return string The `@font-face` CSS.
-	 */
-	$fn_get_css = static function() use ( &$registered_webfonts, $fn_order_src, $fn_build_font_face_css ) {
-		$css = '';
-
-		foreach ( $registered_webfonts as $webfont ) {
-			// Order the webfont's `src` items to optimize for browser support.
-			$webfont = $fn_order_src( $webfont );
-
-			// Build the @font-face CSS for this webfont.
-			$css .= '@font-face{' . $fn_build_font_face_css( $webfont ) . '}';
-		}
-
-		return $css;
-	};
-
-	/**
-	 * Generates and enqueues webfonts styles.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @uses $fn_get_css To run the function that gets the CSS.
-	 */
-	$fn_generate_and_enqueue_styles = static function() use ( $fn_get_css ) {
-		// Generate the styles.
-		$styles = $fn_get_css();
-
-		// Bail out if there are no styles to enqueue.
-		if ( '' === $styles ) {
-			return;
-		}
-
-		// Enqueue the stylesheet.
-		wp_register_style( 'wp-webfonts', '' );
-		wp_enqueue_style( 'wp-webfonts' );
-
-		// Add the styles to the stylesheet.
-		wp_add_inline_style( 'wp-webfonts', $styles );
-	};
-
-	/**
-	 * Generates and enqueues editor styles.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @uses $fn_get_css To run the function that gets the CSS.
-	 */
-	$fn_generate_and_enqueue_editor_styles = static function() use ( $fn_get_css ) {
-		// Generate the styles.
-		$styles = $fn_get_css();
-
-		// Bail out if there are no styles to enqueue.
-		if ( '' === $styles ) {
-			return;
-		}
-
-		wp_add_inline_style( 'wp-block-library', $styles );
-	};
-
-	add_action( 'wp_loaded', $fn_register_webfonts );
-	add_action( 'wp_enqueue_scripts', $fn_generate_and_enqueue_styles );
-	add_action( 'admin_init', $fn_generate_and_enqueue_editor_styles );
+	}
 }