WP_Script_Modules::print_script_module_preloads │ public │ WP 6.5.0

Prints the static dependencies of the enqueued script modules using link tags with rel="modulepreload" attributes.

If a script module is marked for enqueue, it will not be preloaded.

Method of the class: WP_Script_Modules{}

No Hooks.

Returns

null. Nothing (null).

Usage

$WP_Script_Modules = new WP_Script_Modules();
$WP_Script_Modules->print_script_module_preloads();

Changelog

WP_Script_Modules::print_script_module_preloads() WP Script Modules::print script module preloads code ^{WP 6.9.1}

public function print_script_module_preloads() {
	$dependency_ids = $this->get_sorted_dependencies( $this->queue, array( 'static' ) );
	foreach ( $dependency_ids as $id ) {
		// Don't preload if it's marked for enqueue.
		if ( in_array( $id, $this->queue, true ) ) {
			continue;
		}

		$src = $this->get_src( $id );
		if ( '' === $src ) {
			continue;
		}

		$enqueued_dependents   = array_intersect( $this->get_recursive_dependents( $id ), $this->queue );
		$highest_fetchpriority = $this->get_highest_fetchpriority( $enqueued_dependents );
		printf(
			'<link rel="modulepreload" href="%s" id="%s"',
			esc_url( $src ),
			esc_attr( $id . '-js-modulepreload' )
		);
		if ( 'auto' !== $highest_fetchpriority ) {
			printf( ' fetchpriority="%s"', esc_attr( $highest_fetchpriority ) );
		}
		if ( $highest_fetchpriority !== $this->registered[ $id ]['fetchpriority'] && 'auto' !== $this->registered[ $id ]['fetchpriority'] ) {
			printf( ' data-wp-fetchpriority="%s"', esc_attr( $this->registered[ $id ]['fetchpriority'] ) );
		}
		echo ">\n";
	}
}