WC_Template_Loader::get_template_loader_default_file │ private static │ WC 3.0.0

Get the default filename for a template except if a block template with the same name exists.

Method of the class: WC_Template_Loader{}

No Hooks.

Returns

String.

Usage

$result = WC_Template_Loader::get_template_loader_default_file();

Changelog

Since 3.0.0 Introduced.
Since 5.5.0 If a block template with the same name exists, return an empty string.
Since 6.3.0 It checks custom product taxonomies

WC_Template_Loader::get_template_loader_default_file() code WC 10.6.2

woocommerce/includes/class-wc-template-loader.php 
private static function get_template_loader_default_file() {
	if (
		is_singular( 'product' ) &&
		! self::has_block_template( 'single-product' )
	) {
		$default_file = 'single-product.php';
	} elseif ( is_product_taxonomy() ) {
		$object = get_queried_object();

		if ( self::taxonomy_has_block_template( $object ) ) {
			$default_file = '';
		} elseif ( taxonomy_is_product_attribute( $object->taxonomy ) ) {
				$default_file = 'taxonomy-product-attribute.php';
		} elseif ( is_tax( 'product_cat' ) || is_tax( 'product_tag' ) ) {
			$default_file = 'taxonomy-' . $object->taxonomy . '.php';
		} elseif ( ! self::has_block_template( 'archive-product' ) ) {
			$default_file = 'archive-product.php';
		} else {
			$default_file = '';
		}
	} elseif (
		( is_post_type_archive( 'product' ) || is_page( wc_get_page_id( 'shop' ) ) ) &&
		! self::has_block_template( 'archive-product' )
	) {
		$default_file = self::$theme_support ? 'archive-product.php' : '';
	} else {
		$default_file = '';
	}
	return $default_file;
}