Keep types simple

src/ClassMapGenerator.php

@@ -97,11 +97,11 @@ public function getClassMap(): ClassMap
      * @param non-empty-string|null                                 $excluded     Regex that matches file paths to be excluded from the classmap
      * @param 'classmap'|'psr-0'|'psr-4'                            $autoloadType Optional autoload standard to use mapping rules with the namespace instead of purely doing a classmap
      * @param string|null                                           $namespace    Optional namespace prefix to filter by, only for psr-0/psr-4 autoloading
-     * @param string|array<string>                                  $excludedDirs Optional dirs to exclude from search relative to $path
+     * @param array<string>                                         $excludedDirs Optional dirs to exclude from search relative to $path
      *
      * @throws \RuntimeException When the path is neither an existing file nor directory
      */
-    public function scanPaths($path, ?string $excluded = null, string $autoloadType = 'classmap', ?string $namespace = null, $excludedDirs = []): void
+    public function scanPaths($path, ?string $excluded = null, string $autoloadType = 'classmap', ?string $namespace = null, array $excludedDirs = []): void
     {
         if (!in_array($autoloadType, ['psr-0', 'psr-4', 'classmap'], true)) {
             throw new \InvalidArgumentException('$autoloadType must be one of: "psr-0", "psr-4" or "classmap"');