Changeset 60930 for trunk/tests/phpunit/tests/blocks/editor.php

Timestamp:

10/14/2025 12:10:31 AM (12 months ago)

Author:

westonruter

Message:

Editor: Avoid enqueueing assets for blocks which do not render content.

This change prevents scripts, styles, and script modules from being enqueued for blocks that do not render any HTML content. This is common for hidden blocks or blocks like the Featured Image block when no image is present. This change reduces the amount of unused CSS and JavaScript on a page, improving performance.

A new filter, enqueue_empty_block_content_assets, is introduced to allow developers to override this behavior and enqueue assets for empty blocks if needed.

The implementation involves capturing the asset queues before and after a block is rendered. The newly enqueued assets are only merged if the block's rendered content is not empty. This is done recursively for nested blocks to ensure that assets for inner blocks are also not enqueued if a parent block is hidden.

Developed in ​https://github.com/WordPress/wordpress-develop/pull/9213.

Props westonruter, aristath, peterwilsoncc, gziolo, krupajnanda, dd32, jorbin.
See #50328.
Fixes #63676.

File:

• trunk/tests/phpunit/tests/blocks/editor.php (modified) (2 diffs)

trunk/tests/phpunit/tests/blocks/editor.php

@@ -32 +32 @@
                 global $post_ID;
                 $post_ID = 1;
+
+                global $wp_scripts, $wp_styles;
+                $this->original_wp_scripts = $wp_scripts;
+                $this->original_wp_styles  = $wp_styles;
+                $wp_scripts                = null;
+                $wp_styles                 = null;
+                wp_scripts();
+                wp_styles();
         }
 
         public function tear_down() {
+                global $wp_scripts, $wp_styles;
+                $wp_scripts = $this->original_wp_scripts;
+                $wp_styles  = $this->original_wp_styles;
+
                 /** @var WP_REST_Server $wp_rest_server */
                 global $wp_rest_server;
@@ -42 +54 @@
                 parent::tear_down();
         }
+
+        /**
+         * @var WP_Scripts|null
+         */
+        protected $original_wp_scripts;
+
+        /**
+         * @var WP_Styles|null
+         */
+        protected $original_wp_styles;
 
         public function filter_set_block_categories_post( $block_categories, $post ) {