<h2>File Contents: /home/planet5/www/yogitonics.com/wp-content/plugins/jetpack/class.jetpack-gutenberg.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/yogitonics.com/wp-content/plugins/jetpack/class.jetpack-gutenberg.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
 * Handles server-side registration and use of all blocks and plugins available in Jetpack for the block editor, aka Gutenberg.
 * Works in tandem with client-side block registration via `index.json`
 *
 * @package automattic/jetpack
 */

use Automattic\Jetpack\Assets;
use Automattic\Jetpack\Assets\Shared_Stores_Assets;
use Automattic\Jetpack\Blocks;
use Automattic\Jetpack\Connection\Initial_State as Connection_Initial_State;
use Automattic\Jetpack\Connection\Manager as Connection_Manager;
use Automattic\Jetpack\Constants;
use Automattic\Jetpack\Current_Plan as Jetpack_Plan;
use Automattic\Jetpack\Modules;
use Automattic\Jetpack\My_Jetpack\Initializer as My_Jetpack_Initializer;
use Automattic\Jetpack\Status;
use Automattic\Jetpack\Status\Host;

if ( ! defined( &#039;ABSPATH&#039; ) ) {
	exit( 0 );
}

// Required directly so the AI master-gate helper is available regardless of
// which loader pulled this class in.
require_once __DIR__ . &#039;/_inc/lib/class-jetpack-ai-settings.php&#039;;

/**
 * General Gutenberg editor specific functionality
 */
class Jetpack_Gutenberg {

	/**
	 * Only these extensions can be registered. Used to control availability of beta blocks.
	 *
	 * @var array|null Extensions allowed list or `null` if not initialized yet.
	 * @see static::get_extensions()
	 */
	private static $extensions = null;

	/**
	 * Keeps track of the reasons why a given extension is unavailable.
	 *
	 * @var array Extensions availability information
	 */
	private static $availability = array();

	/**
	 * A cached array of the fully processed availability data. Keeps track of
	 * reasons why an extension is unavailable or missing.
	 *
	 * @var array Extensions availability information.
	 */
	private static $cached_availability = null;

	/**
	 * Site-specific features available.
	 * Their calculation can be expensive and slow, so we&#039;re caching it for the request.
	 *
	 * @var array Site-specific features
	 */
	private static $site_specific_features = array();

	/**
	 * List of deprecated blocks.
	 *
	 * @var array List of deprecated blocks.
	 */
	private static $deprecated_blocks = array(
		&#039;jetpack/revue&#039;,
	);

	/**
	 * Display-only blocks whose registration PHP can be deferred until the block
	 * actually appears on a front-end page.
	 *
	 * Every block listed here has been verified to be &quot;pure&quot;: the callback it hooks
	 * to `init` does nothing but call Blocks::jetpack_register_block() (plus trivial
	 * connection/module guards). It registers exactly one block type named
	 * `jetpack/&lt;dir&gt;` (matching its directory), and any front-end hooks it adds (asset
	 * enqueues, wp_footer, filters, …) live inside its render callback, so they only
	 * run when the block is rendered.
	 *
	 * On plain front-end requests these blocks are NOT loaded on `init`. Instead they
	 * are registered just-in-time the first time the block (or a block whose subtree
	 * contains it) is encountered while rendering, via self::lazy_register_deferred_block()
	 * on `pre_render_block`. On admin/REST/cron/CLI/XML-RPC (block-editor) requests they
	 * keep loading eagerly so the editor, the block-types REST endpoint and server-side
	 * rendering are unaffected.
	 *
	 * One class of front-end request is NOT safe to defer on: front-end block editors
	 * (e.g. P2) render the inserter on a plain front-end page, so is_block_editor_context()
	 * is false, yet the block must be registered at `init` for get_availability() to report
	 * it as available. self::load_independent_blocks() therefore never defers a block that
	 * ships in the `no-post-editor` preset (extensions/index.json) — those are exactly the
	 * blocks available in editors other than the post editor. A block listed here that is
	 * also in `no-post-editor` simply keeps loading eagerly.
	 *
	 * A block must NOT be added here if:
	 *   - its `init` callback registers any other hook, post meta, REST route,
	 *     shortcode, block pattern or hooked-block;
	 *   - it registers more than one block type, or a block name that differs from its
	 *     directory name (e.g. videopress registers `jetpack/videopress-block`); or
	 *   - it uses `plan_check` (its availability is computed from the init-time
	 *     `jetpack_register_gutenberg_extensions` hook, which lazy registration bypasses,
	 *     so the front-end availability nudge/render could read a stale value); or
	 *   - a front-end path reads its entry from get_cached_availability() before the
	 *     block renders. Deferred blocks appear unavailable there until the lazy
	 *     registration callback runs; or
	 *   - its block file can be `require`d by another runtime code path after `init`
	 *     (e.g. slideshow is included by modules/shortcodes/slideshow.php). The lazy
	 *     loader registers a block by running the `init` callback its include adds; if
	 *     the file was already included elsewhere, the include is a no-op and the
	 *     callback would never run, so the block would silently fail to register; or
	 *   - another runtime code path calls a function defined in its block file
	 *     (e.g. button defines Button\render_email(), called by subscriptions and
	 *     memberships for WooCommerce e-mail rendering). Deferring the file would leave
	 *     that function undefined when the dependent path runs; or
	 *   - it registers a `render_email_callback`. That callback is read off the
	 *     registered block type by the WooCommerce e-mail editor — an out-of-band
	 *     renderer that does not go through `pre_render_block`/`do_blocks` — so the block
	 *     must already be registered when an e-mail containing it is rendered, which can
	 *     happen on a front-end request (e.g. a transactional e-mail sent during checkout).
	 *
	 * When in doubt, leave it out: omitted blocks simply keep their current eager
	 * behavior.
	 *
	 * @since 16.0
	 * @var string[] Block feature names (directory names, without the `jetpack/` prefix).
	 */
	private static $lazy_blocks = array(
		&#039;blog-stats&#039;,
		&#039;blogging-prompt&#039;,
		&#039;business-hours&#039;,
		&#039;eventbrite&#039;,
		&#039;gif&#039;,
		&#039;goodreads&#039;,
		&#039;google-calendar&#039;,
		&#039;google-docs-embed&#039;,
		&#039;image-compare&#039;,
		&#039;like&#039;,
		&#039;markdown&#039;,
		&#039;nextdoor&#039;,
		&#039;payments-intro&#039;,
		&#039;pinterest&#039;,
		&#039;related-posts&#039;,
		&#039;repeat-visitor&#039;,
		&#039;sharing-buttons&#039;,
		&#039;story&#039;,
		&#039;tock&#039;,
		&#039;top-posts&#039;,
		&#039;voice-to-content&#039;,
	);

	/**
	 * Blocks that were deferred on the current request and still need to be
	 * registered just-in-time when first rendered. Keyed by block feature name.
	 *
	 * @since 16.0
	 * @var array&lt;string,bool&gt;
	 */
	private static $deferred_blocks = array();

	/**
	 * Fallback minimum plan requirements for WordPress.com/Atomic sites.
	 *
	 * Used when features have conditional availability (e.g., sticker-based gating)
	 * and don&#039;t appear in features_data[&#039;available&#039;]. This only affects the upsell
	 * message shown to users.
	 *
	 * @since 15.5
	 * @var array Feature slug =&gt; minimum WordPress.com plan slug.
	 */
	private static $wpcom_minimum_plan_fallbacks = array(
		&#039;donations&#039;              =&gt; &#039;value_bundle&#039;,
		&#039;payment-buttons&#039;        =&gt; &#039;value_bundle&#039;,
		&#039;paypal-payment-buttons&#039; =&gt; &#039;value_bundle&#039;,
	);

	/**
	 * Storing the contents of the preset file.
	 *
	 * Already been json_decode.
	 *
	 * @var null|object JSON decoded object after first usage.
	 */
	private static $preset_cache = null;

	/**
	 * Keep track of JS loading strategies for each block that needs it.
	 *
	 * @var array&lt;string, array|bool&gt;
	 *
	 * @since 15.0
	 */
	private static $block_js_loading_strategies = array();

	/**
	 * Check to see if a minimum version of Gutenberg is available. Because a Gutenberg version is not available in
	 * php if the Gutenberg plugin is not installed, if we know which minimum WP release has the required version we can
	 * optionally fall back to that.
	 *
	 * @param array  $version_requirements An array containing the required Gutenberg version and, if known, the WordPress version that was released with this minimum version.
	 * @param string $slug The slug of the block or plugin that has the gutenberg version requirement.
	 *
	 * @since 8.3.0
	 *
	 * @return boolean True if the version of gutenberg required by the block or plugin is available.
	 */
	public static function is_gutenberg_version_available( $version_requirements, $slug ) {
		global $wp_version;

		// Bail if we don&#039;t at least have the gutenberg version requirement, the WP version is optional.
		if ( empty( $version_requirements[&#039;gutenberg&#039;] ) ) {
			return false;
		}

		// If running a local dev build of gutenberg plugin GUTENBERG_DEVELOPMENT_MODE is set so assume correct version.
		if ( defined( &#039;GUTENBERG_DEVELOPMENT_MODE&#039; ) &amp;&amp; GUTENBERG_DEVELOPMENT_MODE ) {
			return true;
		}

		$version_available = false;

		// If running a production build of the gutenberg plugin then GUTENBERG_VERSION is set, otherwise if WP version
		// with required version of Gutenberg is known check that.
		if ( defined( &#039;GUTENBERG_VERSION&#039; ) ) {
			$version_available = version_compare( GUTENBERG_VERSION, $version_requirements[&#039;gutenberg&#039;], &#039;&gt;=&#039; );
		} elseif ( ! empty( $version_requirements[&#039;wp&#039;] ) ) {
			$version_available = version_compare( $wp_version, $version_requirements[&#039;wp&#039;], &#039;&gt;=&#039; );
		}

		if ( ! $version_available ) {
			$slug = self::remove_extension_prefix( $slug );
			self::set_extension_unavailable(
				$slug,
				&#039;incorrect_gutenberg_version&#039;,
				array(
					&#039;required_feature&#039; =&gt; $slug,
					&#039;required_version&#039; =&gt; $version_requirements,
					&#039;current_version&#039;  =&gt; array(
						&#039;wp&#039;        =&gt; $wp_version,
						&#039;gutenberg&#039; =&gt; defined( &#039;GUTENBERG_VERSION&#039; ) ? GUTENBERG_VERSION : null,
					),
				)
			);
		}

		return $version_available;
	}

	/**
	 * Prepend the &#039;jetpack/&#039; prefix to a block name
	 *
	 * @param string $block_name The block name.
	 *
	 * @return string The prefixed block name.
	 */
	private static function prepend_block_prefix( $block_name ) {
		return &#039;jetpack/&#039; . $block_name;
	}

	/**
	 * Remove the &#039;jetpack/&#039; or jetpack-&#039; prefix from an extension name
	 *
	 * @param string $extension_name The extension name.
	 *
	 * @return string The unprefixed extension name.
	 */
	public static function remove_extension_prefix( $extension_name ) {
		if ( str_starts_with( $extension_name, &#039;jetpack/&#039; ) || str_starts_with( $extension_name, &#039;jetpack-&#039; ) ) {
			return substr( $extension_name, strlen( &#039;jetpack/&#039; ) );
		}
		return $extension_name;
	}

	/**
	 * Whether two arrays share at least one item
	 *
	 * @param array $a An array.
	 * @param array $b Another array.
	 *
	 * @return boolean True if $a and $b share at least one item
	 */
	protected static function share_items( $a, $b ) {
		return array_intersect( $a, $b ) !== array();
	}

	/**
	 * Set a (non-block) extension as available
	 *
	 * @param string $slug Slug of the extension.
	 */
	public static function set_extension_available( $slug ) {
		$slug                        = self::remove_extension_prefix( $slug );
		self::$availability[ $slug ] = true;
	}

	/**
	 * Set the reason why an extension (block or plugin) is unavailable
	 *
	 * @param string $slug Slug of the extension.
	 * @param string $reason A string representation of why the extension is unavailable.
	 * @param array  $details A free-form array containing more information on why the extension is unavailable.
	 */
	public static function set_extension_unavailable( $slug, $reason, $details = array() ) {
		if (
			// Extensions that require a plan may be eligible for upgrades.
			&#039;missing_plan&#039; === $reason
			&amp;&amp; (
				/**
				 * Filter &#039;jetpack_block_editor_enable_upgrade_nudge&#039; with `true` to enable or `false`
				 * to disable paid feature upgrade nudges in the block editor.
				 *
				 * When this is changed to default to `true`, you should also update `modules/memberships/class-jetpack-memberships.php`
				 * See https://github.com/Automattic/jetpack/pull/13394#pullrequestreview-293063378
				 *
				 * @since 7.7.0
				 *
				 * @param boolean
				 */
				! apply_filters( &#039;jetpack_block_editor_enable_upgrade_nudge&#039;, false )
				/** This filter is documented in _inc/lib/admin-pages/class.jetpack-react-page.php */
				|| ! apply_filters( &#039;jetpack_show_promotions&#039;, true )
			)
		) {
			// The block editor may apply an upgrade nudge if `missing_plan` is the reason.
			// Add a descriptive suffix to disable behavior but provide informative reason.
			$reason .= &#039;__nudge_disabled&#039;;
		}
		$slug                        = self::remove_extension_prefix( $slug );
		self::$availability[ $slug ] = array(
			&#039;reason&#039;  =&gt; $reason,
			&#039;details&#039; =&gt; $details,
		);
	}

	/**
	 * Used to initialize the class, no longer in use.
	 *
	 * @return void
	 * @deprecated 12.2 No longer needed.
	 */
	public static function init() {
		_deprecated_function( __METHOD__, &#039;12.2&#039; );
	}

	/**
	 * Resets the class to its original state
	 *
	 * Used in unit tests
	 *
	 * @return void
	 */
	public static function reset() {
		self::$extensions                  = null;
		self::$availability                = array();
		self::$cached_availability         = null;
		self::$block_js_loading_strategies = array();
		self::$deferred_blocks             = array();
	}

	/**
	 * Return the Gutenberg extensions (blocks and plugins) directory
	 *
	 * @return string The Gutenberg extensions directory
	 */
	public static function get_blocks_directory() {
		/**
		 * Filter to select Gutenberg blocks directory
		 *
		 * @since 6.9.0
		 *
		 * @param string default: &#039;_inc/blocks/&#039;
		 */
		return apply_filters( &#039;jetpack_blocks_directory&#039;, &#039;_inc/blocks/&#039; );
	}

	/**
	 * Checks for a given .json file in the blocks folder.
	 *
	 * @deprecated 14.3
	 *
	 * @param string $preset The name of the .json file to look for.
	 *
	 * @return bool True if the file is found.
	 */
	public static function preset_exists( $preset ) {
		_deprecated_function( __METHOD__, &#039;14.3&#039; );
		return file_exists( JETPACK__PLUGIN_DIR . self::get_blocks_directory() . $preset . &#039;.json&#039; );
	}

	/**
	 * Decodes JSON loaded from the preset file in the blocks folder
	 *
	 * @since 14.3 Deprecated argument. Only one value is ever used.
	 *
	 * @param null $deprecated No longer used.
	 *
	 * @return mixed Returns an object if the file is present, or false if a valid .json file is not present.
	 */
	public static function get_preset( $deprecated = null ) {
		if ( $deprecated ) {
			_deprecated_argument( __METHOD__, &#039;14.3&#039;, &#039;The $preset argument is no longer needed or used.&#039; );
		}

		if ( self::$preset_cache ) {
			return self::$preset_cache;
		}

		/*
		 * The manifest is a build artifact and is absent in a source checkout (e.g. when
		 * running the test suite). Return false — as documented — rather than calling
		 * wp_json_file_decode() on a missing file, which triggers _doing_it_wrong().
		 */
		$preset_file = JETPACK__PLUGIN_DIR . self::get_blocks_directory() . &#039;index.json&#039;;
		if ( ! file_exists( $preset_file ) ) {
			return false;
		}

		self::$preset_cache = wp_json_file_decode( $preset_file );
		return self::$preset_cache;
	}

	/**
	 * Returns a list of Jetpack Gutenberg extensions (blocks and plugins), based on index.json
	 *
	 * @return array A list of blocks: eg [ &#039;publicize&#039;, &#039;markdown&#039; ]
	 */
	public static function get_jetpack_gutenberg_extensions_allowed_list() {
		$preset_extensions_manifest = ( defined( &#039;TESTING_IN_JETPACK&#039; ) &amp;&amp; TESTING_IN_JETPACK ) ? array() : self::get_preset();
		$blocks_variation           = self::blocks_variation();

		return self::get_extensions_preset_for_variation( $preset_extensions_manifest, $blocks_variation );
	}

	/**
	 * Returns a diff from a combined list of allowed extensions and extensions determined to be excluded
	 *
	 * @param  array $allowed_extensions An array of allowed extensions.
	 *
	 * @return array A list of blocks: eg array( &#039;publicize&#039;, &#039;markdown&#039; )
	 */
	public static function get_available_extensions( $allowed_extensions = null ) {
		$exclusions         = get_option( &#039;jetpack_excluded_extensions&#039;, array() );
		$allowed_extensions = $allowed_extensions === null ? self::get_jetpack_gutenberg_extensions_allowed_list() : $allowed_extensions;

		// Avoid errors if option data is not as expected.
		if ( ! is_array( $exclusions ) ) {
			$exclusions = array();
		}

		return array_diff( $allowed_extensions, $exclusions );
	}

	/**
	 * Return true if the extension has been registered and there&#039;s nothing in the availablilty array.
	 *
	 * @param string $extension The name of the extension.
	 *
	 * @return bool whether the extension has been registered and there&#039;s nothing in the availablilty array.
	 */
	public static function is_registered_and_no_entry_in_availability( $extension ) {
		return self::is_registered( &#039;jetpack/&#039; . $extension ) &amp;&amp; ! isset( self::$availability[ $extension ] );
	}

	/**
	 * Return true if the extension has a true entry in the availablilty array.
	 *
	 * @param string $extension The name of the extension.
	 *
	 * @return bool whether the extension has a true entry in the availablilty array.
	 */
	public static function is_available( $extension ) {
		return isset( self::$availability[ $extension ] ) &amp;&amp; true === self::$availability[ $extension ];
	}

	/**
	 * Get the availability of each block / plugin, or return the cached availability
	 * if it has already been calculated. Avoids re-registering extensions when not
	 * necessary.
	 *
	 * @return array A list of block and plugins and their availability status.
	 */
	public static function get_cached_availability() {
		if ( null === self::$cached_availability ) {
			self::$cached_availability = self::get_availability();
		}
		return self::$cached_availability;
	}

	/**
	 * Get availability of each block / plugin.
	 *
	 * @return array A list of block and plugins and their availablity status
	 */
	public static function get_availability() {
		/**
		 * Fires before Gutenberg extensions availability is computed.
		 *
		 * In the function call you supply, use `Blocks::jetpack_register_block()` to set a block as available.
		 * Alternatively, use `Jetpack_Gutenberg::set_extension_available()` (for a non-block plugin), and
		 * `Jetpack_Gutenberg::set_extension_unavailable()` (if the block or plugin should not be registered
		 * but marked as unavailable).
		 *
		 * @since 7.0.0
		 */
		do_action( &#039;jetpack_register_gutenberg_extensions&#039; );

		$available_extensions = array();

		foreach ( static::get_extensions() as $extension ) {
			$is_available                       = self::is_registered_and_no_entry_in_availability( $extension ) || self::is_available( $extension );
			$available_extensions[ $extension ] = array(
				&#039;available&#039; =&gt; $is_available,
			);

			if ( ! $is_available ) {
				$reason  = isset( self::$availability[ $extension ] ) ? self::$availability[ $extension ][&#039;reason&#039;] : &#039;missing_module&#039;;
				$details = isset( self::$availability[ $extension ] ) ? self::$availability[ $extension ][&#039;details&#039;] : array();
				$available_extensions[ $extension ][&#039;unavailable_reason&#039;] = $reason;
				$available_extensions[ $extension ][&#039;details&#039;]            = $details;
			}
		}

		return $available_extensions;
	}

	/**
	 * Return the list of extensions that are available.
	 *
	 * @since 11.9
	 *
	 * @return array A list of block and plugins and their availability status.
	 */
	public static function get_extensions() {
		if ( ! static::should_load() ) {
			return array();
		}

		if ( null === self::$extensions ) {
			/**
			 * Filter the list of block editor extensions that are available through Jetpack.
			 *
			 * @since 7.0.0
			 *
			 * @param array
			 */
			self::$extensions = apply_filters( &#039;jetpack_set_available_extensions&#039;, self::get_available_extensions() );

			if ( ! is_array( self::$extensions ) ) {
				_doing_it_wrong( __METHOD__, esc_html__( &#039;The jetpack_set_available_extensions filter must return an array.&#039;, &#039;jetpack&#039; ), &#039;14.9&#039; );
				self::$extensions = array();
			}
		}

		return self::$extensions;
	}

	/**
	 * Check if an extension/block is already registered
	 *
	 * @since 7.2
	 *
	 * @param string $slug Name of extension/block to check.
	 *
	 * @return bool
	 */
	public static function is_registered( $slug ) {
		return WP_Block_Type_Registry::get_instance()-&gt;is_registered( $slug );
	}

	/**
	 * Check if Gutenberg editor is available
	 *
	 * @since 6.7.0
	 *
	 * @return bool
	 */
	public static function is_gutenberg_available() {
		return true;
	}

	/**
	 * Check whether conditions indicate Gutenberg Extensions (blocks and plugins) should be loaded
	 *
	 * Loading blocks and plugins is enabled by default and may be disabled via filter:
	 *   add_filter( &#039;jetpack_gutenberg&#039;, &#039;__return_false&#039; );
	 *
	 * @since 6.9.0
	 *
	 * @return bool
	 */
	public static function should_load() {
		if ( ! Jetpack::is_connection_ready() &amp;&amp; ! ( new Status() )-&gt;is_offline_mode() ) {
			return false;
		}

		$return = true;

		if ( ! ( new Modules() )-&gt;is_active( &#039;blocks&#039; ) ) {
			$return = false;
		}

		/**
		 * Filter to enable Gutenberg blocks.
		 *
		 * Defaults to true if (connected or in offline mode) and the Blocks module is active.
		 *
		 * @since 6.5.0
		 * @since 13.9 Filter is able to activate or deactivate Gutenberg blocks.
		 *
		 * @param bool true Whether to load Gutenberg blocks
		 */
		return (bool) apply_filters( &#039;jetpack_gutenberg&#039;, $return );
	}

	/**
	 * Queue a script to set `Jetpack_Block_Assets_Base_Url`.
	 *
	 * In certain cases Webpack needs to know a base to load additional assets from.
	 * Normally it can determine that itself, but when JS concatenation is involved that tends to confuse it.
	 * We work around that by explicitly outputting a variable with the correct URL.
	 * We set that as its own &quot;script&quot; so we can reliably only output it once.
	 */
	private static function register_blocks_assets_base_url() {
		if ( ! wp_script_is( &#039;jetpack-blocks-assets-base-url&#039;, &#039;registered&#039; ) ) {
			// phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion -- No actual script, so no version needed.
			wp_register_script( &#039;jetpack-blocks-assets-base-url&#039;, false, array(), null, array( &#039;in_footer&#039; =&gt; false ) );
			$json_encode_flags = JSON_UNESCAPED_SLASHES | JSON_HEX_TAG | JSON_HEX_AMP;
			if ( get_option( &#039;blog_charset&#039; ) === &#039;UTF-8&#039; ) {
				$json_encode_flags |= JSON_UNESCAPED_UNICODE;
			}
			wp_add_inline_script(
				&#039;jetpack-blocks-assets-base-url&#039;,
				&#039;var Jetpack_Block_Assets_Base_Url=&#039; . wp_json_encode( plugins_url( self::get_blocks_directory(), JETPACK__PLUGIN_FILE ), $json_encode_flags ) . &#039;;&#039;,
				&#039;before&#039;
			);
		}
	}

	/**
	 * Only enqueue block assets when needed.
	 *
	 * @param string $type Slug of the block or absolute path to the block source code directory.
	 * @param array  $script_dependencies Script dependencies. Will be merged with automatically
	 *                                    detected script dependencies from the webpack build.
	 *
	 * @return void
	 */
	public static function load_assets_as_required( $type, $script_dependencies = array() ) {
		if ( is_admin() ) {
			// A block&#039;s view assets will not be required in wp-admin.
			return;
		}

		// Retrieve the feature from block.json if a path is passed.
		if ( path_is_absolute( $type ) ) {
			$metadata = Blocks::get_block_metadata_from_file( Blocks::get_path_to_block_metadata( $type ) );
			$feature  = Blocks::get_block_feature_from_metadata( $metadata );

			if ( ! empty( $feature ) ) {
				$type = $feature;
			}
		}

		$type = sanitize_title_with_dashes( $type );
		self::load_styles_as_required( $type );
		self::load_scripts_as_required( $type, $script_dependencies );
	}

	/**
	 * Only enqueue block sytles when needed.
	 *
	 * @param string $type Slug of the block.
	 *
	 * @since 7.2.0
	 *
	 * @return void
	 */
	public static function load_styles_as_required( $type ) {
		if ( is_admin() ) {
			// A block&#039;s view assets will not be required in wp-admin.
			return;
		}

		// Enqueue styles.
		$style_relative_path = self::get_blocks_directory() . $type . &#039;/view&#039; . ( is_rtl() ? &#039;.rtl&#039; : &#039;&#039; ) . &#039;.css&#039;;
		if ( self::block_has_asset( $style_relative_path ) ) {
			$style_version = self::get_asset_version( $style_relative_path );
			$view_style    = plugins_url( $style_relative_path, JETPACK__PLUGIN_FILE );
			$view_style    = add_query_arg( &#039;minify&#039;, &#039;false&#039;, $view_style );

			// If this is a customizer preview, render the style directly to the preview after autosave.
			// phpcs:ignore WordPress.Security.NonceVerification.Recommended
			if ( is_customize_preview() &amp;&amp; ! empty( $_GET[&#039;customize_autosaved&#039;] ) ) {
				// phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
				echo &#039;&lt;link rel=&quot;stylesheet&quot; id=&quot;jetpack-block-&#039; . esc_attr( $type ) . &#039;&quot; href=&quot;&#039; . esc_attr( $view_style ) . &#039;&amp;amp;ver=&#039; . esc_attr( $style_version ) . &#039;&quot; media=&quot;all&quot;&gt;&#039;;
			} else {
				wp_enqueue_style( &#039;jetpack-block-&#039; . $type, $view_style, array(), $style_version );
				wp_style_add_data( &#039;jetpack-block-&#039; . $type, &#039;path&#039;, JETPACK__PLUGIN_DIR . $style_relative_path );
			}
		}
	}

	/**
	 * Only enqueue block scripts when needed.
	 *
	 * @param string $type Slug of the block.
	 * @param array  $script_dependencies Script dependencies. Will be merged with automatically
	 *                             detected script dependencies from the webpack build.
	 *
	 * @since 7.2.0
	 *
	 * @return void
	 */
	public static function load_scripts_as_required( $type, $script_dependencies = array() ) {
		if ( is_admin() ) {
			// A block&#039;s view assets will not be required in wp-admin.
			return;
		}

		self::register_blocks_assets_base_url();

		// Enqueue script.
		$script_relative_path  = self::get_blocks_directory() . $type . &#039;/view.js&#039;;
		$script_deps_path      = JETPACK__PLUGIN_DIR . self::get_blocks_directory() . $type . &#039;/view.asset.php&#039;;
		$script_dependencies[] = &#039;jetpack-blocks-assets-base-url&#039;;
		if ( file_exists( $script_deps_path ) ) {
			$asset_manifest      = include $script_deps_path;
			$script_dependencies = array_unique( array_merge( $script_dependencies, $asset_manifest[&#039;dependencies&#039;] ) );
		}

		if ( ! Blocks::is_amp_request() &amp;&amp; self::block_has_asset( $script_relative_path ) ) {
			$script_version = self::get_asset_version( $script_relative_path );
			$view_script    = plugins_url( $script_relative_path, JETPACK__PLUGIN_FILE );
			$view_script    = add_query_arg( &#039;minify&#039;, &#039;false&#039;, $view_script );
			$strategy       = self::get_block_js_loading_strategy( $type );

			// Enqueue dependencies.
			wp_enqueue_script( &#039;jetpack-block-&#039; . $type, $view_script, $script_dependencies, $script_version, $strategy );

			// If this is a customizer preview, enqueue the dependencies and render the script directly to the preview after autosave.
			// phpcs:ignore WordPress.Security.NonceVerification.Recommended
			if ( is_customize_preview() &amp;&amp; ! empty( $_GET[&#039;customize_autosaved&#039;] ) ) {
				// The Map block is dependent on wp-element, and it doesn&#039;t appear to to be possible to load
				// this dynamically into the customizer iframe currently.
				if ( &#039;map&#039; === $type ) {
					echo &#039;&lt;div&gt;&#039; . esc_html__( &#039;No map preview available. Publish and refresh to see this widget.&#039;, &#039;jetpack&#039; ) . &#039;&lt;/div&gt;&#039;;
					echo &#039;&lt;script&gt;&#039;;
					echo &#039;Array.from(document.getElementsByClassName(\&#039;wp-block-jetpack-map\&#039;)).forEach(function(element){element.style.display = \&#039;none\&#039;;})&#039;;
					echo &#039;&lt;/script&gt;&#039;;
				} else {
					echo &#039;&lt;script id=&quot;jetpack-block-&#039; . esc_attr( $type ) . &#039;&quot; src=&quot;&#039; . esc_attr( $view_script ) . &#039;&amp;amp;ver=&#039; . esc_attr( $script_version ) . &#039;&quot;&gt;&lt;/script&gt;&#039;;
				}
			}
		}
	}

	/**
	 * Check if an asset exists for a block.
	 *
	 * @param string $file Path of the file we are looking for.
	 *
	 * @return bool $block_has_asset Does the file exist.
	 */
	public static function block_has_asset( $file ) {
		return file_exists( JETPACK__PLUGIN_DIR . $file );
	}

	/**
	 * Get the version number to use when loading the file. Allows us to bypass cache when developing.
	 *
	 * @param string $file Path of the file we are looking for.
	 *
	 * @return string $script_version Version number.
	 */
	public static function get_asset_version( $file ) {
		return Jetpack::is_development_version() &amp;&amp; self::block_has_asset( $file )
			? filemtime( JETPACK__PLUGIN_DIR . $file )
			: JETPACK__VERSION;
	}

	/**
	 * Load Gutenberg editor assets
	 *
	 * @since 6.7.0
	 *
	 * @return void
	 */
	public static function enqueue_block_editor_assets() {
		if ( ! self::should_load() ) {
			return;
		}

		/*
		 * When the user returns to the editor right after a successful plan
		 * purchase (signalled by the `plan_upgraded` redirect argument), refresh
		 * the locally cached plan from WordPress.com before block availability is
		 * computed below. Otherwise `available_blocks` is derived from the stale
		 * `jetpack_active_plan` option (only refreshed by the daily heartbeat) and
		 * paid blocks keep showing their upgrade nudge even though the plan is now
		 * active. Simple sites gate features live via `wpcom_site_has_feature()`,
		 * so they neither need nor benefit from this.
		 *
		 * The refresh is a blocking WordPress.com request, so it is guarded to run
		 * only on a connected, non-WPCOM site, throttled to once per minute (a
		 * repeated or bookmarked `?plan_upgraded` URL cannot trigger a request on
		 * every load), and time-boxed so a slow origin cannot hang the editor. The
		 * client-side reload fallback covers a skipped or failed refresh. The value
		 * is only used to trigger a cache refresh from an authoritative source, so
		 * no nonce is required. See FORMS-712.
		 */
		if (
			! empty( $_GET[&#039;plan_upgraded&#039;] ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			&amp;&amp; ! ( defined( &#039;IS_WPCOM&#039; ) &amp;&amp; IS_WPCOM )
			&amp;&amp; Jetpack::is_connection_ready()
			&amp;&amp; ! get_transient( &#039;jetpack_plan_upgraded_refresh&#039; )
		) {
			set_transient( &#039;jetpack_plan_upgraded_refresh&#039;, 1, MINUTE_IN_SECONDS );

			$cap_plan_refresh_timeout = static function () {
				return 5;
			};
			add_filter( &#039;http_request_timeout&#039;, $cap_plan_refresh_timeout, PHP_INT_MAX );
			Jetpack_Plan::refresh_from_wpcom();
			remove_filter( &#039;http_request_timeout&#039;, $cap_plan_refresh_timeout, PHP_INT_MAX );
		}

		$status = new Status();

		// Required for Analytics. See _inc/lib/admin-pages/class.jetpack-admin-page.php.
		if ( ! $status-&gt;is_offline_mode() &amp;&amp; Jetpack::is_connection_ready() ) {
			wp_enqueue_script( &#039;jp-tracks&#039;, &#039;//stats.wp.com/w.js&#039;, array(), gmdate( &#039;YW&#039; ), true );
		}

		$blocks_dir       = self::get_blocks_directory();
		$blocks_variation = self::blocks_variation();

		if ( &#039;production&#039; !== $blocks_variation ) {
			$blocks_env = &#039;-&#039; . esc_attr( $blocks_variation );
		} else {
			$blocks_env = &#039;&#039;;
		}

		self::register_blocks_assets_base_url();

		Assets::register_script(
			&#039;jetpack-blocks-editor&#039;,
			&quot;{$blocks_dir}editor{$blocks_env}.js&quot;,
			JETPACK__PLUGIN_FILE,
			array(
				&#039;textdomain&#039;   =&gt; &#039;jetpack&#039;,
				&#039;dependencies&#039; =&gt; array( &#039;jetpack-blocks-assets-base-url&#039; ),
			)
		);

		/**
		 * This can be called multiple times per page load in the admin, during the `enqueue_block_assets` action.
		 * These assets are necessary for the admin for editing but are not necessary for each pattern preview.
		 * Therefore we dequeue them, so they don&#039;t load for each pattern preview iframe.
		 */
		if ( ! wp_should_load_block_editor_scripts_and_styles() ) {
			wp_dequeue_script( &#039;jp-tracks&#039; );
			wp_dequeue_script( &#039;jetpack-blocks-editor&#039; );

			return;
		}

		// Hack around #20357 (specifically, that the editor bundle depends on
		// wp-edit-post but wp-edit-post&#039;s styles break the Widget Editor and
		// Site Editor) until a real fix gets unblocked.
		// @todo Remove this once #20357 is properly fixed.
		$wp_styles_fix = wp_styles()-&gt;query( &#039;jetpack-blocks-editor&#039;, &#039;registered&#039; );
		if ( empty( $wp_styles_fix ) ) {
			wp_die( &#039;Your installation of Jetpack is incomplete. Please run &quot;jetpack build plugins/jetpack&quot; in your dev env.&#039; );
		}
		wp_styles()-&gt;query( &#039;jetpack-blocks-editor&#039;, &#039;registered&#039; )-&gt;deps = array();

		Assets::enqueue_script( &#039;jetpack-blocks-editor&#039; );

		if ( defined( &#039;IS_WPCOM&#039; ) &amp;&amp; IS_WPCOM ) {
			$user                      = wp_get_current_user();
			$user_data                 = array(
				&#039;email&#039;    =&gt; $user-&gt;user_email,
				&#039;userid&#039;   =&gt; $user-&gt;ID,
				&#039;username&#039; =&gt; $user-&gt;user_login,
			);
			$blog_id                   = get_current_blog_id();
			$is_current_user_connected = true;
		} else {
			$user_data                 = Jetpack_Tracks_Client::get_connected_user_tracks_identity();
			$blog_id                   = Jetpack_Options::get_option( &#039;id&#039;, 0 );
			$is_current_user_connected = ( new Connection_Manager( &#039;jetpack&#039; ) )-&gt;is_user_connected();
		}

		if ( $blocks_variation === &#039;beta&#039; &amp;&amp; $is_current_user_connected ) {
			wp_enqueue_style( &#039;recoleta-font&#039;, &#039;//s1.wp.com/i/fonts/recoleta/css/400.min.css&#039;, array(), Constants::get_constant( &#039;JETPACK__VERSION&#039; ) );
		}
		// AI Assistant
		$ai_assistant_state = array(
			&#039;is-enabled&#039;     =&gt; Jetpack_AI_Settings::is_ai_enabled(),
			&#039;is-seo-enabled&#039; =&gt; Jetpack_AI_Settings::is_ai_seo_enabled(),
		);

		$screen_base = null;
		if ( function_exists( &#039;get_current_screen&#039; ) ) {
			$current_screen = get_current_screen();
			$screen_base    = $current_screen ? $current_screen-&gt;base : null;
		}

		$modules = array();
		if ( class_exists( &#039;Jetpack_Core_API_Module_List_Endpoint&#039; ) ) {
			$module_list_endpoint = new Jetpack_Core_API_Module_List_Endpoint();
			$modules              = $module_list_endpoint-&gt;get_modules();
		}

		$jetpack_plan  = Jetpack_Plan::get();
		$initial_state = array(
			&#039;available_blocks&#039; =&gt; self::get_availability(),
			&#039;blocks_variation&#039; =&gt; $blocks_variation,
			&#039;modules&#039;          =&gt; $modules,
			&#039;jetpack&#039;          =&gt; array(
				&#039;is_active&#039;                     =&gt; Jetpack::is_connection_ready(),
				&#039;is_current_user_connected&#039;     =&gt; $is_current_user_connected,
				/** This filter is documented in class.jetpack-gutenberg.php */
				&#039;enable_upgrade_nudge&#039;          =&gt; apply_filters( &#039;jetpack_block_editor_enable_upgrade_nudge&#039;, false ),
				&#039;is_private_site&#039;               =&gt; $status-&gt;is_private_site(),
				&#039;is_coming_soon&#039;                =&gt; $status-&gt;is_coming_soon(),
				&#039;is_offline_mode&#039;               =&gt; $status-&gt;is_offline_mode(),
				&#039;is_newsletter_feature_enabled&#039; =&gt; class_exists( &#039;\Jetpack_Memberships&#039; ),
				// Whether the current user may send a newsletter test email to an
				// address other than their own. The wpcom guard enforces this on send
				// (also checking add_users and site stickers); this flag only controls
				// whether the editor&#039;s recipient field is editable. Approximated with
				// manage_options so editors, who can only test-send to themselves,
				// aren&#039;t shown an editable field that would always be rejected.
				&#039;can_send_test_email_to_others&#039; =&gt; current_user_can( &#039;manage_options&#039; ),
				// this is the equivalent of JP initial state siteData.showMyJetpack (class-jetpack-redux-state-helper)
				// used to determine if we can link to My Jetpack from the block editor
				&#039;is_my_jetpack_available&#039;       =&gt; My_Jetpack_Initializer::should_initialize(),
				&#039;jetpack_plan&#039;                  =&gt; array(
					&#039;data&#039; =&gt; $jetpack_plan[&#039;product_slug&#039;],
				),
				/**
				 * Enable the RePublicize UI in the block editor context.
				 *
				 * @module publicize
				 *
				 * @since 10.3.0
				 * @deprecated 11.5 This is a feature flag that is no longer used.
				 *
				 * @param bool true Enable the RePublicize UI in the block editor context. Defaults to true.
				 */
				&#039;republicize_enabled&#039;           =&gt; apply_filters( &#039;jetpack_block_editor_republicize_feature&#039;, true ),
			),
			&#039;siteFragment&#039;     =&gt; $status-&gt;get_site_suffix(),
			&#039;adminUrl&#039;         =&gt; esc_url( admin_url() ),
			&#039;tracksUserData&#039;   =&gt; $user_data,
			&#039;wpcomBlogId&#039;      =&gt; $blog_id,
			&#039;allowedMimeTypes&#039; =&gt; wp_get_mime_types(),
			&#039;siteLocale&#039;       =&gt; str_replace( &#039;_&#039;, &#039;-&#039;, get_locale() ),
			&#039;ai-assistant&#039;     =&gt; $ai_assistant_state,
			&#039;screenBase&#039;       =&gt; $screen_base,
			/**
			 * Add your own feature flags to the block editor.
			 *
			 * You can access the feature flags in the block editor via hasFeatureFlag( &#039;your-feature-flag&#039; ) function.
			 *
			 * @since 14.8
			 *
			 * @param array true Enable the RePublicize UI in the block editor context. Defaults to true.
			 */
			&#039;feature_flags&#039;    =&gt; apply_filters( &#039;jetpack_block_editor_feature_flags&#039;, array() ),
			&#039;pluginBasePath&#039;   =&gt; plugins_url( &#039;&#039;, Constants::get_constant( &#039;JETPACK__PLUGIN_FILE&#039; ) ),
		);

		wp_localize_script(
			Shared_Stores_Assets::SCRIPT_HANDLE,
			&#039;Jetpack_Editor_Initial_State&#039;,
			$initial_state
		);

		// Adds Connection package initial state.
		Connection_Initial_State::render_script( &#039;jetpack-blocks-editor&#039; );
	}

	/**
	 * Block feature names in the `no-post-editor` preset (extensions/index.json): blocks
	 * whose editor bundle is usable outside the post editor, so they appear in front-end
	 * block editors such as P2. These must never be deferred (see self::$lazy_blocks and
	 * self::load_independent_blocks()).
	 *
	 * @since 16.2
	 *
	 * @return string[] Feature names, or an empty array when the preset is unavailable.
	 */
	private static function get_no_post_editor_extensions() {
		$preset = self::get_preset();
		if ( is_object( $preset ) &amp;&amp; isset( $preset-&gt;{&#039;no-post-editor&#039;} ) &amp;&amp; is_array( $preset-&gt;{&#039;no-post-editor&#039;} ) ) {
			return $preset-&gt;{&#039;no-post-editor&#039;};
		}
		return array();
	}

	/**
	 * Some blocks do not depend on a specific module,
	 * and can consequently be loaded outside of the usual modules.
	 * We will look for such modules in the extensions/ directory.
	 *
	 * @since 7.1.0
	 * @since 16.0 Pure display blocks are deferred on front-end requests and registered on first render.
	 * @since 16.2 Blocks in the `no-post-editor` preset are never deferred, so front-end editors (e.g. P2) keep them.
	 * @see wp_common_block_scripts_and_styles()
	 */
	public static function load_independent_blocks() {
		if ( self::should_load() ) {
			/**
			 * Look for files that match our list of available Jetpack Gutenberg extensions (blocks and plugins).
			 * If available, load them.
			 */
			$directories = array( &#039;blocks&#039;, &#039;plugins&#039;, &#039;extended-blocks&#039; );

			/*
			 * On plain front-end requests, defer the registration PHP of pure display
			 * blocks (see self::$lazy_blocks) until the block is actually encountered
			 * while rendering. The block editor, the block-types REST endpoint and
			 * server-side rendering all run in a &quot;block-editor context&quot; and keep loading
			 * every block eagerly, so their behavior is unchanged.
			 */
			$defer = ! self::is_block_editor_context();

			/*
			 * Front-end block editors (e.g. P2) render the inserter on a plain front-end
			 * request, so is_block_editor_context() is false there, yet a block must be
			 * registered on `init` for get_availability() to report it and keep it in the
			 * inserter. Never defer a block that ships in the `no-post-editor` preset —
			 * those are precisely the blocks usable outside the post editor.
			 */
			$no_post_editor_blocks = $defer ? self::get_no_post_editor_extensions() : array();

			foreach ( static::get_extensions() as $extension ) {
				if (
					$defer
					&amp;&amp; in_array( $extension, self::$lazy_blocks, true )
					&amp;&amp; ! in_array( $extension, $no_post_editor_blocks, true )
				) {
					self::$deferred_blocks[ $extension ] = true;
					continue;
				}

				foreach ( $directories as $dirname ) {
					$path = JETPACK__PLUGIN_DIR . &quot;extensions/{$dirname}/{$extension}/{$extension}.php&quot;;

					if ( file_exists( $path ) ) {
						include_once $path;
						continue 2;
					}
				}
			}

			if ( ! empty( self::$deferred_blocks ) ) {
				add_filter( &#039;pre_render_block&#039;, array( __CLASS__, &#039;lazy_register_deferred_block&#039; ), 10, 3 );
			}
		}
	}

	/**
	 * Register deferred blocks present in a top-level block&#039;s subtree before it renders.
	 *
	 * Hooked to `pre_render_block`. For a top-level block ($parent_block is null) the
	 * filter fires before core builds the block&#039;s WP_Block object, so we walk the whole
	 * parsed subtree and register every deferred Jetpack block it contains. This must
	 * happen at the top level: core resolves an inner block&#039;s `block_type` when it
	 * constructs that inner WP_Block, which is *before* the inner block&#039;s own
	 * `pre_render_block` fires — so registering a deferred dynamic block only when its
	 * own inner filter fires would be too late and its render_callback would be skipped.
	 * Inner-block invocations (non-null $parent_block) are ignored because the top-level
	 * walk has already handled the whole tree. Returns $pre_render untouched.
	 *
	 * @since 16.0
	 *
	 * @param string|null    $pre_render   The pre-rendered content. Default null.
	 * @param array          $parsed_block The parsed block being rendered.
	 * @param \WP_Block|null $parent_block Parent block, or null for a top-level block.
	 *
	 * @return string|null Unchanged $pre_render.
	 */
	public static function lazy_register_deferred_block( $pre_render, $parsed_block, $parent_block = null ) {
		// Respect any earlier short-circuit, only act on top-level blocks, and stop
		// once every deferred block on the page has been registered.
		if ( null !== $pre_render || null !== $parent_block || empty( self::$deferred_blocks ) ) {
			return $pre_render;
		}

		self::register_deferred_blocks_in_subtree( $parsed_block );

		return $pre_render;
	}

	/**
	 * Recursively register any deferred Jetpack blocks found in a parsed block subtree.
	 *
	 * @since 16.0
	 *
	 * @param array $parsed_block A parsed block (with optional `innerBlocks`).
	 * @param array $seen_refs    Reusable-block IDs already visited, to guard against cycles.
	 *
	 * @return void
	 */
	private static function register_deferred_blocks_in_subtree( $parsed_block, &amp;$seen_refs = array() ) {
		if ( empty( self::$deferred_blocks ) ) {
			return;
		}

		$block_name = $parsed_block[&#039;blockName&#039;] ?? &#039;&#039;;
		if ( &#039;&#039; !== $block_name &amp;&amp; str_starts_with( $block_name, &#039;jetpack/&#039; ) ) {
			$feature = substr( $block_name, strlen( &#039;jetpack/&#039; ) );
			if ( ! empty( self::$deferred_blocks[ $feature ] ) ) {
				// Only attempt registration once per block, whether or not it succeeds
				// (a block guarded by a connection/module check may intentionally not register).
				unset( self::$deferred_blocks[ $feature ] );

				if ( ! self::is_registered( $block_name ) ) {
					self::load_and_register_deferred_block( $feature );
				}
			}
		}

		/*
		 * A synced pattern / reusable block (core/block) keeps its content in a separate
		 * wp_block post that core only parses at render time (render_block_core_block),
		 * so it is absent from this parsed tree. Resolve the reference and recurse so a
		 * deferred block inside the pattern is registered before core builds its WP_Block.
		 *
		 * core/navigation has the same ref-based hidden-content shape (a wp_navigation
		 * post) but is intentionally not handled: none of the deferred blocks can be
		 * inserted into a navigation menu through the editor, and resolving the ref would
		 * add a get_post()/parse_blocks() on essentially every front-end page (menus are
		 * near-ubiquitous) for a case that cannot occur without hand-authored markup.
		 */
		if ( &#039;core/block&#039; === $block_name &amp;&amp; ! empty( $parsed_block[&#039;attrs&#039;][&#039;ref&#039;] ) ) {
			$ref = (int) $parsed_block[&#039;attrs&#039;][&#039;ref&#039;];
			if ( ! isset( $seen_refs[ $ref ] ) ) {
				$seen_refs[ $ref ] = true;
				$reusable_block    = get_post( $ref );
				if ( $reusable_block instanceof \WP_Post &amp;&amp; &#039;wp_block&#039; === $reusable_block-&gt;post_type ) {
					foreach ( parse_blocks( $reusable_block-&gt;post_content ) as $inner_block ) {
						self::register_deferred_blocks_in_subtree( $inner_block, $seen_refs );
					}
				}
			}
		}

		if ( ! empty( $parsed_block[&#039;innerBlocks&#039;] ) ) {
			foreach ( $parsed_block[&#039;innerBlocks&#039;] as $inner_block ) {
				self::register_deferred_blocks_in_subtree( $inner_block, $seen_refs );
			}
		}
	}

	/**
	 * Include a deferred block&#039;s registration PHP and run the `init` callback it
	 * adds, immediately.
	 *
	 * The block files register themselves with `add_action( &#039;init&#039;, … )`. By render
	 * time `init` has long since fired, so including the file is not enough on its
	 * own: we capture the callback(s) the include adds to `init` and invoke them now.
	 * Only blocks in self::$lazy_blocks reach this path, and each adds exactly its
	 * own registration callback to `init`, so this runs that single registration.
	 *
	 * @since 16.0
	 *
	 * @param string $feature Block feature name (directory name without the `jetpack/` prefix).
	 *
	 * @return void
	 */
	private static function load_and_register_deferred_block( $feature ) {
		$path = JETPACK__PLUGIN_DIR . &quot;extensions/blocks/{$feature}/{$feature}.php&quot;;
		if ( ! file_exists( $path ) ) {
			self::warn_about_deferred_block_registration_failure( $feature, &#039;missing block registration file&#039; );
			return;
		}

		global $wp_filter;

		$before = isset( $wp_filter[&#039;init&#039;] ) ? $wp_filter[&#039;init&#039;]-&gt;callbacks : array();

		include_once $path;

		if ( ! isset( $wp_filter[&#039;init&#039;] ) ) {
			self::warn_about_deferred_block_registration_failure( $feature, &#039;block file did not add an init callback&#039; );
			return;
		}

		$registered_callback = false;

		// Run (and then detach) any callback the include just added to `init`.
		foreach ( $wp_filter[&#039;init&#039;]-&gt;callbacks as $priority =&gt; $callbacks ) {
			foreach ( $callbacks as $id =&gt; $callback ) {
				if ( isset( $before[ $priority ][ $id ] ) ) {
					continue;
				}
				$registered_callback = true;
				if ( is_callable( $callback[&#039;function&#039;] ) ) {
					call_user_func( $callback[&#039;function&#039;] );
				}
				remove_action( &#039;init&#039;, $callback[&#039;function&#039;], $priority );
			}
		}

		if ( ! $registered_callback ) {
			self::warn_about_deferred_block_registration_failure( $feature, &#039;block file did not add a new init callback&#039; );
		}
	}

	/**
	 * Surface lazy-registration mistakes during debugging without adding front-end noise.
	 *
	 * @since 16.0
	 *
	 * @param string $feature Block feature name (directory name without the `jetpack/` prefix).
	 * @param string $reason  Short reason for the failure.
	 *
	 * @return void
	 */
	private static function warn_about_deferred_block_registration_failure( $feature, $reason ) {
		if ( ! ( defined( &#039;WP_DEBUG&#039; ) &amp;&amp; WP_DEBUG ) || ! function_exists( &#039;_doing_it_wrong&#039; ) ) {
			return;
		}

		_doing_it_wrong(
			__METHOD__,
			sprintf(
				/* translators: 1: Jetpack block feature name. 2: Failure reason. */
				esc_html__( &#039;Lazy Jetpack block registration failed for &quot;%1$s&quot;: %2$s.&#039;, &#039;jetpack&#039; ),
				esc_html( $feature ),
				esc_html( $reason )
			),
			&#039;16.0&#039;
		);
	}

	/**
	 * Determine whether the current request is a block-editor context that needs
	 * every Jetpack block loaded eagerly on `init`.
	 *
	 * Returns true for admin, REST, cron, WP-CLI and XML-RPC requests so the editor,
	 * the `/wp/v2/block-types` endpoint and server-side rendering keep seeing the full
	 * set of blocks. Returns false only for plain front-end web requests, where pure
	 * display blocks are registered just-in-time as they render.
	 *
	 * This runs at module-load time (around after_setup_theme), before core defines
	 * REST_REQUEST during parse_request, so self-hosted and Atomic REST requests are
	 * detected from the request URL instead of the constant. That URL check cannot
	 * work on WordPress.com Simple: its public API filters `rest_url_prefix` to an
	 * empty string, so rest_get_url_prefix() returns &#039;&#039; and the REST roots computed
	 * below collapse to &#039;//&#039;, which no request path can match. Simple&#039;s requests are
	 * detected via REST_API_REQUEST instead, which its API entry points define before
	 * wp-load.php runs.
	 *
	 * @since 16.0
	 *
	 * @return bool True for block-editor (non-front-end) contexts, false for plain front-end requests.
	 */
	private static function is_block_editor_context() {
		if ( is_admin() ) {
			return true;
		}

		/*
		 * Treat any non-front-end execution context as block-editor. These are not the
		 * front-end hot path this gate optimizes, and some still render block content
		 * (e.g. cron-generated subscription e-mails) that depends on full registration.
		 *
		 * Core defines REST_REQUEST during parse_request, after this runs, so it is
		 * normally still unset here; it is checked anyway so the result stays correct
		 * if this is ever called later in the request. REST_API_REQUEST is what catches
		 * WordPress.com Simple, where the URL check below cannot work at all (see the
		 * method docblock).
		 */
		if (
			Constants::is_true( &#039;DOING_CRON&#039; )
			|| Constants::is_true( &#039;WP_CLI&#039; )
			|| Constants::is_true( &#039;XMLRPC_REQUEST&#039; )
			|| Constants::is_true( &#039;REST_REQUEST&#039; )
			|| Constants::is_true( &#039;REST_API_REQUEST&#039; )
		) {
			return true;
		}

		/*
		 * No request URI means a non-web execution context (WP-CLI without it, test
		 * suites, etc.). A genuine front-end page request always carries one, so it
		 * costs nothing on the hot path to treat the empty case as &quot;load eagerly&quot;.
		 */
		$request_uri = isset( $_SERVER[&#039;REQUEST_URI&#039;] ) ? sanitize_text_field( wp_unslash( $_SERVER[&#039;REQUEST_URI&#039;] ) ) : &#039;&#039;;
		if ( &#039;&#039; === $request_uri ) {
			return true;
		}

		/*
		 * Anchor the REST root (home path + prefix) at the start of the request path,
		 * so a front-end URL that merely carries the prefix in a query value or a
		 * deeper path segment is not misread as a REST request. home_url() is used
		 * rather than rest_url() so detection does not depend on permalink structure.
		 * Both the rewritten `/wp-json/` form and the index-permalink
		 * `/index.php/wp-json/` form (used when the site lacks pretty permalinks) are
		 * matched.
		 */
		$path = (string) wp_parse_url( $request_uri, PHP_URL_PATH );
		if ( &#039;&#039; !== $path ) {
			$home_path   = trailingslashit( (string) wp_parse_url( home_url(), PHP_URL_PATH ) );
			$rest_prefix = trailingslashit( rest_get_url_prefix() );
			$rest_roots  = array(
				$home_path . $rest_prefix,
				$home_path . &#039;index.php/&#039; . $rest_prefix,
			);
			foreach ( $rest_roots as $rest_root ) {
				if ( str_starts_with( trailingslashit( $path ), $rest_root ) ) {
					return true;
				}
			}
		}

		// Plain-permalink REST uses a `rest_route` query var; match the exact key.
		$query = (string) wp_parse_url( $request_uri, PHP_URL_QUERY );
		if ( &#039;&#039; !== $query ) {
			parse_str( $query, $query_vars );
			if ( ! empty( $query_vars[&#039;rest_route&#039;] ) ) {
				return true;
			}
		}

		return false;
	}

	/**
	 * Editor-oriented extensions that nonetheless have front-end side effects and must
	 * therefore keep loading on every request, even outside the block editor.
	 *
	 * Keyed by directory (&#039;plugins&#039; / &#039;extended-blocks&#039;) for an exact, intentional match.
	 *
	 * @since 16.0
	 *
	 * @var array
	 */
	private static $frontend_editor_extensions = array(
		&#039;plugins&#039;         =&gt; array(
			// Mounts the Reader Chat widget on the front end (wp_enqueue_scripts) and
			// wires the AI sidebar/provider registration AI Assistant depends on.
			&#039;ai-assistant-plugin&#039;,
			// Signals Big Sky via the jetpack_image_studio_enabled filter on `init`,
			// which can run on the front end.
			&#039;image-studio&#039;,
		),
		&#039;extended-blocks&#039; =&gt; array(
			// Registers the videopress/video block on `init`, required to render it on the front end.
			&#039;videopress-video&#039;,
			// Registers the `premium-content/container` plan availability that the Premium Content
			// block&#039;s front-end render reads via required_plan_checks(); skipping it breaks the paywall.
			&#039;premium-content-container&#039;,
		),
	);

	/**
	 * Loads PHP components of block editor extensions.
	 *
	 * @since 8.9.0
	 */
	public static function load_block_editor_extensions() {
		if ( self::should_load() ) {
			// Block editor extensions to load.
			$extensions_to_load = array(
				&#039;extended-blocks&#039;,
				&#039;plugins&#039;,
			);

			$is_editor_context = self::is_block_editor_context();

			// Collect the extension paths.
			foreach ( $extensions_to_load as $extension_to_load ) {
				$extensions_folder = glob( JETPACK__PLUGIN_DIR . &#039;extensions/&#039; . $extension_to_load . &#039;/*&#039; );

				$frontend_allow_list = self::$frontend_editor_extensions[ $extension_to_load ] ?? array();

				// Require each of the extension files, in case it exists.
				foreach ( $extensions_folder as $extension_folder ) {
					$name = basename( $extension_folder );

					/*
					 * On plain front-end requests, only load extensions that have known
					 * front-end side effects. Editor-only extensions are skipped here and
					 * loaded on admin/REST (block-editor) requests instead, reducing the
					 * per-front-end-request PHP/opcache footprint.
					 */
					if ( ! $is_editor_context &amp;&amp; ! in_array( $name, $frontend_allow_list, true ) ) {
						continue;
					}

					$extension_file_path = JETPACK__PLUGIN_DIR . &#039;extensions/&#039; . $extension_to_load . &#039;/&#039; . $name . &#039;/&#039; . $name . &#039;.php&#039;;

					if ( file_exists( $extension_file_path ) ) {
						include_once $extension_file_path;
					}
				}
			}
		}
	}

	/**
	 * Determine whether a site should use the default set of blocks, or a custom set.
	 * Possible variations are currently beta, experimental, and production.
	 *
	 * @since 8.1.0
	 *
	 * @return string $block_varation production|beta|experimental
	 */
	public static function blocks_variation() {
		// Default to production blocks.
		$block_varation = &#039;production&#039;;

		/*
		 * Prefer to use this JETPACK_BLOCKS_VARIATION constant
		 * or the jetpack_blocks_variation filter
		 * to set the block variation in your code.
		 */
		$default = Constants::get_constant( &#039;JETPACK_BLOCKS_VARIATION&#039; );
		if ( ! empty( $default ) &amp;&amp; in_array( $default, array( &#039;beta&#039;, &#039;experimental&#039;, &#039;production&#039; ), true ) ) {
			$block_varation = $default;
		}

		/**
		* Alternative to `JETPACK_BETA_BLOCKS`, set to `true` to load Beta Blocks.
		*
		* @since 6.9.0
		* @deprecated 11.8.0 Use jetpack_blocks_variation filter instead.
		*
		* @param boolean
		*/
		$is_beta = apply_filters_deprecated(
			&#039;jetpack_load_beta_blocks&#039;,
			array( false ),
			&#039;jetpack-11.8.0&#039;,
			&#039;jetpack_blocks_variation&#039;
		);

		/*
		 * Switch to beta blocks if you use the JETPACK_BETA_BLOCKS constant
		 * or the deprecated jetpack_load_beta_blocks filter.
		 * This only applies when not using the newer JETPACK_BLOCKS_VARIATION constant.
		 */
		if (
			empty( $default )
			&amp;&amp; (
				$is_beta
				|| Constants::is_true( &#039;JETPACK_BETA_BLOCKS&#039; )
			)
		) {
			$block_varation = &#039;beta&#039;;
		}

		/**
		* Alternative to `JETPACK_EXPERIMENTAL_BLOCKS`, set to `true` to load Experimental Blocks.
		*
		* @since 6.9.0
		* @deprecated 11.8.0 Use jetpack_blocks_variation filter instead.
		*
		* @param boolean
		*/
		$is_experimental = apply_filters_deprecated(
			&#039;jetpack_load_experimental_blocks&#039;,
			array( false ),
			&#039;jetpack-11.8.0&#039;,
			&#039;jetpack_blocks_variation&#039;
		);

		/*
		 * Switch to experimental blocks if you use the JETPACK_EXPERIMENTAL_BLOCKS constant
		 * or the deprecated jetpack_load_experimental_blocks filter.
		 * This only applies when not using the newer JETPACK_BLOCKS_VARIATION constant.
		 */
		if (
			empty( $default )
			&amp;&amp; (
				$is_experimental
				|| Constants::is_true( &#039;JETPACK_EXPERIMENTAL_BLOCKS&#039; )
			)
		) {
			$block_varation = &#039;experimental&#039;;
		}

		/**
		 * Allow customizing the variation of blocks in use on a site.
		 * Overwrites any previously set values, whether by constant or filter.
		 *
		 * @since 8.1.0
		 *
		 * @param string $block_variation Can be beta, experimental, and production. Defaults to production.
		 */
		return apply_filters( &#039;jetpack_blocks_variation&#039;, $block_varation );
	}

	/**
	 * Get a list of extensions available for the variation you chose.
	 *
	 * @since 8.1.0
	 *
	 * @param object $preset_extensions_manifest List of extensions available in Jetpack.
	 * @param string $blocks_variation           Subset of blocks. production|beta|experimental.
	 *
	 * @return array $preset_extensions Array of extensions for that variation
	 */
	public static function get_extensions_preset_for_variation( $preset_extensions_manifest, $blocks_variation ) {
		$preset_extensions = isset( $preset_extensions_manifest-&gt;{ $blocks_variation } )
				? (array) $preset_extensions_manifest-&gt;{ $blocks_variation }
				: array();

		/*
		 * Experimental and Beta blocks need the production blocks as well.
		 */
		if (
			&#039;experimental&#039; === $blocks_variation
			|| &#039;beta&#039; === $blocks_variation
		) {
			$production_extensions = isset( $preset_extensions_manifest-&gt;production )
				? (array) $preset_extensions_manifest-&gt;production
				: array();

			$preset_extensions = array_unique( array_merge( $preset_extensions, $production_extensions ) );
		}

		/*
		 * Beta blocks need the experimental blocks as well.
		 *
		 * If you&#039;ve chosen to see Beta blocks,
		 * we want to make all blocks available to you:
		 * - Production
		 * - Experimental
		 * - Beta
		 */
		if ( &#039;beta&#039; === $blocks_variation ) {
			$production_extensions = isset( $preset_extensions_manifest-&gt;experimental )
				? (array) $preset_extensions_manifest-&gt;experimental
				: array();

			$preset_extensions = array_unique( array_merge( $preset_extensions, $production_extensions ) );
		}

		return $preset_extensions;
	}

	/**
	 * Validate a URL used in a SSR block.
	 *
	 * @since 8.3.0
	 *
	 * @param string $url      URL saved as an attribute in block.
	 * @param array  $allowed  Array of allowed hosts for that block, or regexes to check against.
	 * @param bool   $is_regex Array of regexes matching the URL that could be used in block.
	 *
	 * @return bool|string
	 */
	public static function validate_block_embed_url( $url, $allowed = array(), $is_regex = false ) {
		if (
			empty( $url )
			|| ! is_array( $allowed )
			|| empty( $allowed )
		) {
			return false;
		}

		$url_components = wp_parse_url( $url );

		// Bail early if we cannot find a host.
		if ( empty( $url_components[&#039;host&#039;] ) ) {
			return false;
		}

		// Normalize URL.
		$url = sprintf(
			&#039;%s://%s%s%s&#039;,
			$url_components[&#039;scheme&#039;] ?? &#039;https&#039;,
			$url_components[&#039;host&#039;],
			$url_components[&#039;path&#039;] ?? &#039;/&#039;,
			isset( $url_components[&#039;query&#039;] ) ? &#039;?&#039; . $url_components[&#039;query&#039;] : &#039;&#039;
		);

		if ( ! empty( $url_components[&#039;fragment&#039;] ) ) {
			$url = $url . &#039;#&#039; . rawurlencode( $url_components[&#039;fragment&#039;] );
		}

		/*
		 * If we&#039;re using an allowed list of hosts,
		 * check if the URL belongs to one of the domains allowed for that block.
		 */
		if (
			false === $is_regex
			&amp;&amp; in_array( $url_components[&#039;host&#039;], $allowed, true )
		) {
			return $url;
		}

		/*
		 * If we are using an array of regexes to check against,
		 * loop through that.
		 */
		if ( true === $is_regex ) {
			foreach ( $allowed as $regex ) {
				if ( 1 === preg_match( $regex, $url ) ) {
					return $url;
				}
			}
		}

		return false;
	}

	/**
	 * Determines whether a preview of the block with an upgrade nudge should
	 * be displayed for admins on the site frontend.
	 *
	 * @since 8.4.0
	 *
	 * @param array $availability_for_block The availability for the block.
	 *
	 * @return bool
	 */
	public static function should_show_frontend_preview( $availability_for_block ) {
		return (
			isset( $availability_for_block[&#039;details&#039;][&#039;required_plan&#039;] )
			&amp;&amp; current_user_can( &#039;manage_options&#039; )
			&amp;&amp; ! is_feed()
		);
	}

	/**
	 * Output an UpgradeNudge Component on the frontend of a site.
	 *
	 * @since 8.4.0
	 *
	 * @param string $plan The plan that users need to purchase to make the block work.
	 *
	 * @return string
	 */
	public static function upgrade_nudge( $plan ) {
		require_once JETPACK__PLUGIN_DIR . &#039;_inc/lib/components.php&#039;;
		return Jetpack_Components::render_upgrade_nudge(
			array(
				&#039;plan&#039; =&gt; $plan,
			)
		);
	}

	/**
	 * Output a notice within a block.
	 *
	 * @since 8.6.0
	 *
	 * @param string $message Notice we want to output.
	 * @param string $status  Status of the notice. Can be one of success, info, warning, error. info by default.
	 * @param string $classes List of CSS classes.
	 *
	 * @return string
	 */
	public static function notice( $message, $status = &#039;info&#039;, $classes = &#039;&#039; ) {
		if (
			empty( $message )
			|| ! in_array( $status, array( &#039;success&#039;, &#039;info&#039;, &#039;warning&#039;, &#039;error&#039; ), true )
		) {
			return &#039;&#039;;
		}

		$color = &#039;&#039;;
		switch ( $status ) {
			case &#039;success&#039;:
				$color = &#039;#00a32a&#039;;
				break;
			case &#039;warning&#039;:
				$color = &#039;#dba617&#039;;
				break;
			case &#039;error&#039;:
				$color = &#039;#d63638&#039;;
				break;
			case &#039;info&#039;:
			default:
				$color = &#039;#72aee6&#039;;
				break;
		}

		return sprintf(
			&#039;&lt;div class=&quot;jetpack-block__notice %1$s %3$s&quot; style=&quot;border-left:5px solid %4$s;padding:1em;background-color:#f8f9f9;&quot;&gt;%2$s&lt;/div&gt;&#039;,
			esc_attr( $status ),
			wp_kses(
				$message,
				array(
					&#039;br&#039; =&gt; array(),
					&#039;p&#039;  =&gt; array(),
					&#039;a&#039;  =&gt; array(
						&#039;href&#039;   =&gt; array(),
						&#039;target&#039; =&gt; array(),
						&#039;rel&#039;    =&gt; array(),
					),
				)
			),
			esc_attr( $classes ),
			sanitize_hex_color( $color )
		);
	}

	/**
	 * Retrieve site-specific features for Simple sites.
	 *
	 * We&#039;re caching the data for the lifetime of the request, because it can be slow to calculate,
	 * and it can be called multiple times per single request.
	 *
	 * We intentionally don&#039;t use object caching or any other type of persistent caching,
	 * in order to avoid complex cache invalidation on subscription addition or removal.
	 *
	 * @since 10.7
	 *
	 * @return array
	 */
	private static function get_site_specific_features() {
		$current_blog_id = get_current_blog_id();

		if ( isset( self::$site_specific_features[ $current_blog_id ] ) ) {
			return self::$site_specific_features[ $current_blog_id ];
		}

		if ( ! class_exists( &#039;Store_Product_List&#039; ) ) {
			require WP_CONTENT_DIR . &#039;/admin-plugins/wpcom-billing/store-product-list.php&#039;;
		}

		$site_specific_features                           = Store_Product_List::get_site_specific_features_data( $current_blog_id );
		self::$site_specific_features[ $current_blog_id ] = $site_specific_features;

		return $site_specific_features;
	}

	/**
	 * Set the availability of the block as the editor
	 * is loaded.
	 *
	 * @param string $slug Slug of the block.
	 */
	public static function set_availability_for_plan( $slug ) {
		$slug = self::remove_extension_prefix( $slug );

		if ( Jetpack_Plan::supports( $slug ) ) {
			self::set_extension_available( $slug );
			return;
		}

		// Check what&#039;s the minimum plan where the feature is available.
		$plan           = &#039;&#039;;
		$features_data  = array();
		$is_simple_site = defined( &#039;IS_WPCOM&#039; ) &amp;&amp; IS_WPCOM;
		$is_atomic_site = ( new Host() )-&gt;is_woa_site();

		if ( $is_simple_site || $is_atomic_site ) {
			// Simple sites.
			if ( $is_simple_site ) {
				$features_data = self::get_site_specific_features();
			} else {
				// Atomic sites.
				$option = get_option( &#039;jetpack_active_plan&#039; );
				if ( isset( $option[&#039;features&#039;] ) ) {
					$features_data = $option[&#039;features&#039;];
				}
			}

			if ( ! empty( $features_data[&#039;available&#039;][ $slug ] ) ) {
				$plan = $features_data[&#039;available&#039;][ $slug ][0];
			} elseif ( isset( self::$wpcom_minimum_plan_fallbacks[ $slug ] ) ) {
				// Fallback for features with conditional availability (e.g., sticker-based gating)
				// that don&#039;t appear in features_data[&#039;available&#039;].
				$plan = self::$wpcom_minimum_plan_fallbacks[ $slug ];
			}
		} else {
			// Jetpack sites.
			$plan = Jetpack_Plan::get_minimum_plan_for_feature( $slug );
		}

		self::set_extension_unavailable(
			$slug,
			&#039;missing_plan&#039;,
			array(
				&#039;required_feature&#039; =&gt; $slug,
				&#039;required_plan&#039;    =&gt; $plan,
			)
		);
	}

	/**
	 * Wraps the suplied render_callback in a function to check
	 * the availability of the block before rendering it.
	 *
	 * @param string   $slug The block slug, used to check for availability.
	 * @param callable $render_callback The render_callback that will be called if the block is available.
	 */
	public static function get_render_callback_with_availability_check( $slug, $render_callback ) {
		return function ( $prepared_attributes, $block_content, $block ) use ( $render_callback, $slug ) {
			$availability = self::get_cached_availability();
			$bare_slug    = self::remove_extension_prefix( $slug );
			if ( isset( $availability[ $bare_slug ] ) &amp;&amp; $availability[ $bare_slug ][&#039;available&#039;] ) {
				return call_user_func( $render_callback, $prepared_attributes, $block_content, $block );
			}

			// A preview of the block is rendered for admins on the frontend with an upgrade nudge.
			if ( isset( $availability[ $bare_slug ] ) ) {
				if ( self::should_show_frontend_preview( $availability[ $bare_slug ] ) ) {
					$block_preview = call_user_func( $render_callback, $prepared_attributes, $block_content, $block );

					// If the upgrade nudge isn&#039;t already being displayed by a parent block, display the nudge.
					if ( isset( $block-&gt;attributes[&#039;shouldDisplayFrontendBanner&#039;] ) &amp;&amp; $block-&gt;attributes[&#039;shouldDisplayFrontendBanner&#039;] ) {
						$upgrade_nudge = self::upgrade_nudge( $availability[ $bare_slug ][&#039;details&#039;][&#039;required_plan&#039;] );
						return $upgrade_nudge . $block_preview;
					}

					return $block_preview;
				}
			}

			return null;
		};
	}

	/**
	 * Display a message to site editors and roles above when a block is no longer supported.
	 * This is only displayed on the frontend.
	 *
	 * @since 12.3
	 *
	 * @param string $block_content The block content.
	 * @param array  $block         The full block, including name and attributes.
	 *
	 * @return string
	 */
	public static function display_deprecated_block_message( $block_content, $block ) {
		if ( isset( $block[&#039;blockName&#039;] ) &amp;&amp; in_array( $block[&#039;blockName&#039;], self::$deprecated_blocks, true ) ) {
			if ( current_user_can( &#039;edit_posts&#039; ) ) {
				$block_content = self::notice(
					__( &#039;This block is no longer supported. Its contents will no longer be displayed to your visitors and as such this block should be removed.&#039;, &#039;jetpack&#039; ),
					&#039;warning&#039;,
					&#039;jetpack-block-deprecated&#039;
				);
			} else {
				$block_content = &#039;&#039;;
			}
		}

		return $block_content;
	}

	/**
	 * Register block metadata collection for Jetpack blocks.
	 * This allows for more efficient block metadata loading by avoiding
	 * individual block.json file reads at runtime.
	 *
	 * Uses wp_register_block_metadata_collection() if the manifest file
	 * exists. The manifest file is auto-generated during the build process.
	 *
	 * Runs on plugins_loaded to ensure registration happens before individual
	 * blocks register themselves on init.
	 *
	 * @static
	 * @since 14.1
	 * @return void
	 */
	public static function register_block_metadata_collection() {
		$meta_file_path = JETPACK__PLUGIN_DIR . &#039;_inc/blocks/blocks-manifest.php&#039;;
		if ( file_exists( $meta_file_path ) ) {
			wp_register_block_metadata_collection(
				JETPACK__PLUGIN_DIR . &#039;_inc/blocks/&#039;,
				$meta_file_path
			);
		}
	}

	/**
	 * Set the JS loading strategy for a block.
	 *
	 * @param string     $block_name The block name.
	 * @param array|bool $strategy   The JS loading strategy.
	 *
	 * @since 15.0
	 */
	public static function set_block_js_loading_strategy( $block_name, $strategy ) {
		self::$block_js_loading_strategies[ $block_name ] = $strategy;
	}

	/**
	 * Get the JS loading strategy for a block.
	 *
	 * @param string $block_name The block name.
	 *
	 * @return array|bool The JS loading strategy for the block.
	 *
	 * @since 15.0
	 */
	public static function get_block_js_loading_strategy( $block_name ) {
		$strategy = array(
			&#039;strategy&#039;  =&gt; &#039;defer&#039;,
			&#039;in_footer&#039; =&gt; true,
		);

		if ( isset( self::$block_js_loading_strategies[ $block_name ] ) ) {
			$strategy = self::$block_js_loading_strategies[ $block_name ];
		}

		return $strategy;
	}
}

if ( ( new Host() )-&gt;is_woa_site() ) {
	/**
	* Enable upgrade nudge for Atomic sites.
	 * This feature is false as default,
	 * so let&#039;s enable it through this filter.
	 *
	 * More doc: https://github.com/Automattic/jetpack/blob/trunk/projects/plugins/jetpack/extensions/README.md#upgrades-for-blocks
	 */
	add_filter( &#039;jetpack_block_editor_enable_upgrade_nudge&#039;, &#039;__return_true&#039; );
}
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