Add types to private and internal properties

Author: nicolas-grekas

Node/ArrayNode.php

@@ -20,7 +20,7 @@
  */
 class ArrayNode extends Node
 {
-    protected $index;
+    protected int $index;
 
     public function __construct()
     {

Token.php

@@ -30,8 +30,8 @@ class Token
     public const PUNCTUATION_TYPE = 'punctuation';
 
     /**
-     * @param string   $type   The type of the token (self::*_TYPE)
-     * @param int|null $cursor The cursor position in the source
+     * @param self::*_TYPE $type
+     * @param int|null     $cursor The cursor position in the source
      */
     public function __construct(string $type, string|int|float|null $value, ?int $cursor)
     {