Ticket #5303: single-parent-block.diff

cli/class-block-plugin-checker.php

@@ -478 +478 @@
         }
 
         /**
+         * Check for a single parent block
+         */
+        function check_for_single_parent() {
+                if ( empty( $this->blocks ) || ! is_array( $this->blocks ) ) {
+                        return;
+                }
+
+                $top_level_blocks = array_filter(
+                        $this->blocks,
+                        function( $block ) {
+                                return ! isset( $block->parent ) || is_null( $block->parent );
+                        }
+                );
+
+                if ( count( $top_level_blocks ) > 1 ) {
+                        $list = array_map(
+                                function( $block ) {
+                                        return ! empty( $block->title ) ? $block->title : $block->name;
+                                },
+                                $top_level_blocks
+                        );
+                        $this->record_result(
+                                __FUNCTION__,
+                                'warning',
+                                sprintf(
+                                        /* translators: %s is a list of block names. */
+                                        __( 'More than one top level block was found: %s', 'wporg-plugins' ),
+                                        implode( ', ', $list )
+                                ),
+                                $block_name
+                        );
+                }
+        }
+
+        /**
          * Do the script files all exist?
          */
         function check_for_block_script_files() {