composer update

vendor/symfony/translation/Extractor/AbstractFileExtractor.php

@@ -21,13 +21,13 @@ use Symfony\Component\Translation\Exception\InvalidArgumentException;
 abstract class AbstractFileExtractor
 {
     /**
-     * @param string|array $resource Files, a file or a directory
+     * @param string|iterable $resource Files, a file or a directory
      *
-     * @return array
+     * @return iterable
      */
     protected function extractFiles($resource)
     {
-        if (\is_array($resource) || $resource instanceof \Traversable) {
+        if (is_iterable($resource)) {
             $files = [];
             foreach ($resource as $file) {
                 if ($this->canBeExtracted($file)) {
@@ -74,7 +74,7 @@ abstract class AbstractFileExtractor
     /**
      * @param string|array $resource Files, a file or a directory
      *
-     * @return array files to be extracted
+     * @return iterable files to be extracted
      */
     abstract protected function extractFromDirectory($resource);
 }