wp-includes/blocks.php:3300Exposes blocks with autoRegister flag for ServerSideRender in the editor.
function _wp_enqueue_auto_register_blocks() { $auto_register_blocks = array(); $registered_blocks = WP_Block_Type_Registry::get_instance()->get_all_registered(); foreach ( $registered_blocks as $block_name => $block_type ) { if ( ! empty( $block_type->supports['autoRegister'] ) && ! empty( $block_type->render_callback ) ) { $auto_register_blocks[] = $block_name; } } if ( ! empty( $auto_register_blocks ) ) { wp_add_inline_script( 'wp-block-library', sprintf( 'window.__unstableAutoRegisterBlocks = %s;', wp_json_encode( $auto_register_blocks ) ), 'before' ); }}Introduced in 7.0.0. Unchanged from 7.0.4 through 7.1.0.
Signature, return type and hooks compared across 2 parsed releases.
src/wp-includes/blocks.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.