NGSTACK-938 fix phpstan issues

Author: JakovKnezovicc

src/Action/CheckLinter.php

@@ -33,6 +33,8 @@ protected function doExecute(Config $config, IO $io, Repository $repository, Act
     }
 
     /**
+     * @param $directories string[]
+     *
      * @return array<string, mixed>
      */
     protected function checkLinter(array $directories, string $linterCommand): array

src/Action/CheckPrettier.php

@@ -22,14 +22,16 @@ final class CheckPrettier extends Action
 
     protected function doExecute(Config $config, IO $io, Repository $repository, ActionConfig $action): void
     {
+        /** @var string|string[] $extensions */
         $extensions = $action->getOptions()->get('extensions', ['js', 'jsx', 'ts', 'tsx', 'css', 'scss']);
         $excludedFiles = $action->getOptions()->get('excluded_files') ?? [];
         $directories = $action->getOptions()->get('directories', ['assets']);
         $prettierCommand = $action->getOptions()->get('prettier_command', 'pnpm prettier');
         $formatOptions = $action->getOptions()->get('prettier_options', '--check');
 
         $finder = new Finder();
-        $finder->in($directories)->files()->name(preg_filter('/^/', '*.', $extensions));
+        preg_filter('/^/', '*.', $extensions);
+        $finder->in($directories)->files()->name($extensions);
 
         if ($finder->hasResults()) {
             $io->write(sprintf('Running %s on files:', $prettierCommand));