Upgrade framework

vendor/symfony/translation/Extractor/AbstractFileExtractor.php

@@ -20,22 +20,17 @@ use Symfony\Component\Translation\Exception\InvalidArgumentException;
  */
 abstract class AbstractFileExtractor
 {
-    /**
-     * @param string|array $resource files, a file or a directory
-     *
-     * @return array
-     */
-    protected function extractFiles($resource)
+    protected function extractFiles(string|iterable $resource): iterable
     {
-        if (is_array($resource) || $resource instanceof \Traversable) {
-            $files = array();
+        if (is_iterable($resource)) {
+            $files = [];
             foreach ($resource as $file) {
                 if ($this->canBeExtracted($file)) {
                     $files[] = $this->toSplFileInfo($file);
                 }
             }
         } elseif (is_file($resource)) {
-            $files = $this->canBeExtracted($resource) ? array($this->toSplFileInfo($resource)) : array();
+            $files = $this->canBeExtracted($resource) ? [$this->toSplFileInfo($resource)] : [];
         } else {
             $files = $this->extractFromDirectory($resource);
         }
@@ -43,24 +38,15 @@ abstract class AbstractFileExtractor
         return $files;
     }
 
-    /**
-     * @param string $file
-     *
-     * @return \SplFileInfo
-     */
-    private function toSplFileInfo($file)
+    private function toSplFileInfo(string $file): \SplFileInfo
     {
-        return ($file instanceof \SplFileInfo) ? $file : new \SplFileInfo($file);
+        return new \SplFileInfo($file);
     }
 
     /**
-     * @param string $file
-     *
-     * @return bool
-     *
      * @throws InvalidArgumentException
      */
-    protected function isFile($file)
+    protected function isFile(string $file): bool
     {
         if (!is_file($file)) {
             throw new InvalidArgumentException(sprintf('The "%s" file does not exist.', $file));
@@ -70,16 +56,12 @@ abstract class AbstractFileExtractor
     }
 
     /**
-     * @param string $file
-     *
      * @return bool
      */
-    abstract protected function canBeExtracted($file);
+    abstract protected function canBeExtracted(string $file);
 
     /**
-     * @param string|array $resource files, a file or a directory
-     *
-     * @return array files to be extracted
+     * @return iterable
      */
-    abstract protected function extractFromDirectory($resource);
+    abstract protected function extractFromDirectory(string|array $resource);
 }