diff -r be944660c56a -r 3d72ae0968f4 wp/wp-includes/class-wp-block-type.php
--- a/wp/wp-includes/class-wp-block-type.php	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-includes/class-wp-block-type.php	Tue Sep 27 16:37:53 2022 +0200
@@ -59,6 +59,15 @@
 	public $parent = null;
 
 	/**
+	 * Setting ancestor makes a block available only inside the specified
+	 * block types at any position of the ancestor's block subtree.
+	 *
+	 * @since 6.0.0
+	 * @var array|null
+	 */
+	public $ancestor = null;
+
+	/**
 	 * Block type icon.
 	 *
 	 * @since 5.5.0
@@ -79,7 +88,7 @@
 	 * in search interfaces.
 	 *
 	 * @since 5.5.0
-	 * @var array
+	 * @var string[]
 	 */
 	public $keywords = array();
 
@@ -156,7 +165,7 @@
 	public $provides_context = null;
 
 	/**
-	 * Block type editor script handle.
+	 * Block type editor only script handle.
 	 *
 	 * @since 5.0.0
 	 * @var string|null
@@ -164,7 +173,7 @@
 	public $editor_script = null;
 
 	/**
-	 * Block type front end script handle.
+	 * Block type front end and editor script handle.
 	 *
 	 * @since 5.0.0
 	 * @var string|null
@@ -172,7 +181,15 @@
 	public $script = null;
 
 	/**
-	 * Block type editor style handle.
+	 * Block type front end only script handle.
+	 *
+	 * @since 5.9.0
+	 * @var string|null
+	 */
+	public $view_script = null;
+
+	/**
+	 * Block type editor only style handle.
 	 *
 	 * @since 5.0.0
 	 * @var string|null
@@ -180,7 +197,7 @@
 	public $editor_style = null;
 
 	/**
-	 * Block type front end style handle.
+	 * Block type front end and editor style handle.
 	 *
 	 * @since 5.0.0
 	 * @var string|null
@@ -188,6 +205,16 @@
 	public $style = null;
 
 	/**
+	 * Attributes supported by every block.
+	 *
+	 * @since 6.0.0
+	 * @var array
+	 */
+	const GLOBAL_ATTRIBUTES = array(
+		'lock' => array( 'type' => 'object' ),
+	);
+
+	/**
 	 * Constructor.
 	 *
 	 * Will populate object properties from the provided arguments.
@@ -198,6 +225,8 @@
 	 *              `uses_context`, and `provides_context` properties.
 	 * @since 5.6.0 Added the `api_version` property.
 	 * @since 5.8.0 Added the `variations` property.
+	 * @since 5.9.0 Added the `view_script` property.
+	 * @since 6.0.0 Added the `ancestor` property.
 	 *
 	 * @see register_block_type()
 	 *
@@ -212,9 +241,11 @@
 	 *                                           search interfaces to arrange block types by category.
 	 *     @type array|null    $parent           Setting parent lets a block require that it is only
 	 *                                           available when nested within the specified blocks.
+	 *     @type array|null    $ancestor         Setting ancestor makes a block available only inside the specified
+	 *                                           block types at any position of the ancestor's block subtree.
 	 *     @type string|null   $icon             Block type icon.
 	 *     @type string        $description      A detailed block type description.
-	 *     @type array         $keywords         Additional keywords to produce block type as
+	 *     @type string[]      $keywords         Additional keywords to produce block type as
 	 *                                           result in search interfaces.
 	 *     @type string|null   $textdomain       The translation textdomain.
 	 *     @type array         $styles           Alternative block styles.
@@ -225,10 +256,11 @@
 	 *     @type array|null    $attributes       Block type attributes property schemas.
 	 *     @type array         $uses_context     Context values inherited by blocks of this type.
 	 *     @type array|null    $provides_context Context provided by blocks of this type.
-	 *     @type string|null   $editor_script    Block type editor script handle.
-	 *     @type string|null   $script           Block type front end script handle.
-	 *     @type string|null   $editor_style     Block type editor style handle.
-	 *     @type string|null   $style            Block type front end style handle.
+	 *     @type string|null   $editor_script    Block type editor only script handle.
+	 *     @type string|null   $script           Block type front end and editor script handle.
+	 *     @type string|null   $view_script      Block type front end only script handle.
+	 *     @type string|null   $editor_style     Block type editor only style handle.
+	 *     @type string|null   $style            Block type front end and editor style handle.
 	 * }
 	 */
 	public function __construct( $block_type, $args = array() ) {
@@ -333,6 +365,18 @@
 
 		$args['name'] = $this->name;
 
+		// Setup attributes if needed.
+		if ( ! isset( $args['attributes'] ) || ! is_array( $args['attributes'] ) ) {
+			$args['attributes'] = array();
+		}
+
+		// Register core attributes.
+		foreach ( static::GLOBAL_ATTRIBUTES as $attr_key => $attr_schema ) {
+			if ( ! array_key_exists( $attr_key, $args['attributes'] ) ) {
+				$args['attributes'][ $attr_key ] = $attr_schema;
+			}
+		}
+
 		/**
 		 * Filters the arguments for registering a block type.
 		 *