Increase WP_Dependencies and related classes to PHPStan level 8

Author: westonruter

src/wp-includes/class-wp-dependencies.php

@@ -60,7 +60,7 @@ class WP_Dependencies {
 	 *
 	 * @since 2.6.0
 	 *
-	 * @var array
+	 * @var array<string, string>
 	 */
 	public $args = array();
 
@@ -100,7 +100,7 @@ class WP_Dependencies {
 	 *
 	 * @since 5.9.0
 	 *
-	 * @var array
+	 * @var array<string, string|null>
 	 */
 	private $queued_before_register = array();
 

src/wp-includes/class-wp-dependency.php

@@ -66,7 +66,7 @@ class _WP_Dependency {
 	 * Extra data to supply to the handle.
 	 *
 	 * @since 2.6.0
-	 * @var array
+	 * @var array<string, mixed>
 	 */
 	public $extra = array();
 
@@ -82,7 +82,7 @@ class _WP_Dependency {
 	 * Translation path set for this dependency.
 	 *
 	 * @since 5.0.0
-	 * @var string
+	 * @var string|null
 	 */
 	public $translations_path;
 

src/wp-includes/class-wp-scripts.php

@@ -46,7 +46,7 @@ class WP_Scripts extends WP_Dependencies {
 	 * Holds handles of scripts which are enqueued in footer.
 	 *
 	 * @since 2.8.0
-	 * @var array
+	 * @var string[]
 	 */
 	public $in_footer = array();
 
@@ -118,7 +118,7 @@ class WP_Scripts extends WP_Dependencies {
 	 * List of default directories.
 	 *
 	 * @since 2.8.0
-	 * @var array
+	 * @var string[]
 	 */
 	public $default_dirs;
 
@@ -589,9 +589,9 @@ public function get_inline_script_tag( $handle, $position = 'after' ) {
 	 *
 	 * @since 2.1.0
 	 *
-	 * @param string $handle      Name of the script to attach data to.
-	 * @param string $object_name Name of the variable that will contain the data.
-	 * @param array  $l10n        Array of data to localize.
+	 * @param string               $handle      Name of the script to attach data to.
+	 * @param string               $object_name Name of the variable that will contain the data.
+	 * @param array<string, mixed> $l10n        Array of data to localize.
 	 * @return bool True on success, false on failure.
 	 */
 	public function localize( $handle, $object_name, $l10n ) {

src/wp-includes/class-wp-styles.php

@@ -96,7 +96,7 @@ class WP_Styles extends WP_Dependencies {
 	 * List of default directories.
 	 *
 	 * @since 2.8.0
-	 * @var array
+	 * @var string[]
 	 */
 	public $default_dirs;
 
@@ -183,7 +183,7 @@ public function do_item( $handle, $group = false ) {
 		}
 
 		if ( $this->do_concat ) {
-			if ( $this->in_default_dir( $src ) && ! isset( $obj->extra['alt'] ) ) {
+			if ( $src && $this->in_default_dir( $src ) && ! isset( $obj->extra['alt'] ) ) {
 				$this->concat         .= "$handle,";
 				$this->concat_version .= "$handle$ver";