wp-includes/class-wp-theme-json.php:937Unwraps shared block style variations.
$theme_jsonarray$valid_variationsarrayarray private static function unwrap_shared_block_style_variations( $theme_json, $valid_variations ) { if ( empty( $theme_json['styles']['variations'] ) || empty( $valid_variations ) ) { return $theme_json; } $new_theme_json = $theme_json; $variations = $new_theme_json['styles']['variations']; foreach ( $valid_variations as $block_type => $registered_variations ) { foreach ( $registered_variations as $variation_name ) { $block_level_data = $new_theme_json['styles']['blocks'][ $block_type ]['variations'][ $variation_name ] ?? array(); $top_level_data = $variations[ $variation_name ] ?? array(); $merged_data = array_replace_recursive( $top_level_data, $block_level_data ); if ( ! empty( $merged_data ) ) { _wp_array_set( $new_theme_json, array( 'styles', 'blocks', $block_type, 'variations', $variation_name ), $merged_data ); } } } unset( $new_theme_json['styles']['variations'] ); return $new_theme_json; }Introduced in 6.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-theme-json.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.