Add types to private and internal properties

Author: nicolas-grekas

Iterator/VcsIgnoredFilterIterator.php

@@ -18,20 +18,17 @@
  */
 final class VcsIgnoredFilterIterator extends \FilterIterator
 {
-    /**
-     * @var string
-     */
-    private $baseDir;
+    private string $baseDir;
 
     /**
      * @var array<string, array{0: string, 1: string}|null>
      */
-    private $gitignoreFilesCache = [];
+    private array $gitignoreFilesCache = [];
 
     /**
      * @var array<string, bool>
      */
-    private $ignoredPathsCache = [];
+    private array $ignoredPathsCache = [];
 
     /**
      * @param \Iterator<string, \SplFileInfo> $iterator