diff --git a/wp-includes/class-wp-dependencies.php b/wp-includes/class-wp-dependencies.php
index 92c277e86f..c3dc40bc88 100644
--- a/wp-includes/class-wp-dependencies.php
+++ b/wp-includes/class-wp-dependencies.php
@@ -56,11 +56,12 @@ class WP_Dependencies {
 	/**
 	 * An array of additional arguments passed when a handle is registered.
 	 *
-	 * Arguments are appended to the item query string.
+	 * The keys are dependency handles and the values are query strings which are appended to the item URL's query
+	 * string, after the `ver` if provided.
 	 *
 	 * @since 2.6.0
 	 *
-	 * @var array
+	 * @var array<string, string>
 	 */
 	public $args = array();
 
@@ -100,7 +101,7 @@ class WP_Dependencies {
 	 *
 	 * @since 5.9.0
 	 *
-	 * @var array
+	 * @var array<string, string|null>
 	 */
 	private $queued_before_register = array();
 
diff --git a/wp-includes/class-wp-dependency.php b/wp-includes/class-wp-dependency.php
index 6666b166af..4900bf737d 100644
--- a/wp-includes/class-wp-dependency.php
+++ b/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;
 
diff --git a/wp-includes/class-wp-scripts.php b/wp-includes/class-wp-scripts.php
index 3e7908095e..1326627404 100644
--- a/wp-includes/class-wp-scripts.php
+++ b/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[]|null
 	 */
 	public $default_dirs;
 
@@ -374,7 +374,8 @@ class WP_Scripts extends WP_Dependencies {
 			$filtered_src = apply_filters( 'script_loader_src', $src, $handle );
 
 			if (
-				$this->in_default_dir( $filtered_src )
+				is_string( $filtered_src )
+				&& $this->in_default_dir( $filtered_src )
 				&& ( $before_script || $after_script || $translations_stop_concat || $this->is_delayed_strategy( $strategy ) )
 			) {
 				$this->do_concat = false;
@@ -589,9 +590,9 @@ class WP_Scripts extends WP_Dependencies {
 	 *
 	 * @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 ) {
diff --git a/wp-includes/class-wp-styles.php b/wp-includes/class-wp-styles.php
index 455f1c986e..2af3581d9a 100644
--- a/wp-includes/class-wp-styles.php
+++ b/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[]|null
 	 */
 	public $default_dirs;
 
@@ -183,7 +183,7 @@ class WP_Styles extends WP_Dependencies {
 		}
 
 		if ( $this->do_concat ) {
-			if ( $this->in_default_dir( $src ) && ! isset( $obj->extra['alt'] ) ) {
+			if ( is_string( $src ) && $this->in_default_dir( $src ) && ! isset( $obj->extra['alt'] ) ) {
 				$this->concat         .= "$handle,";
 				$this->concat_version .= "$handle$ver";
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 238bc553af..7980ce7acf 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '7.0-alpha-61357';
+$wp_version = '7.0-alpha-61358';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.