add parameter type declarations where possible

src/Symfony/Bridge/Twig/Command/LintCommand.php

@@ -107,7 +107,7 @@ EOF
         return $filesInfo;
     }
 
-    protected function findFiles($filename)
+    protected function findFiles(string $filename)
     {
         if (is_file($filename)) {
             return [$filename];

src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php

@@ -38,7 +38,7 @@ class TemplateCacheWarmer implements CacheWarmerInterface, ServiceSubscriberInte
     /**
      * {@inheritdoc}
      */
-    public function warmUp($cacheDir)
+    public function warmUp(string $cacheDir)
     {
         if (null === $this->twig) {
             $this->twig = $this->container->get('twig');

src/Symfony/Bundle/TwigBundle/Command/LintCommand.php

@@ -42,7 +42,7 @@ EOF
         ;
     }
 
-    protected function findFiles($filename)
+    protected function findFiles(string $filename)
     {
         if (0 === strpos($filename, '@')) {
             $dir = $this->getApplication()->getKernel()->locateResource($filename);

src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php

@@ -37,7 +37,7 @@ class PreviewErrorController
         $this->errorRenderer = $errorRenderer;
     }
 
-    public function previewErrorPageAction(Request $request, $code)
+    public function previewErrorPageAction(Request $request, int $code)
     {
         $exception = FlattenException::createFromThrowable(new \Exception('Something has intentionally gone wrong.'), $code, ['X-Debug' => false]);
 

src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php

@@ -170,7 +170,7 @@ class TwigExtension extends Extension
         return $bundleHierarchy;
     }
 
-    private function normalizeBundleName($name)
+    private function normalizeBundleName(string $name)
     {
         if ('Bundle' === substr($name, -6)) {
             $name = substr($name, 0, -6);

src/Symfony/Bundle/TwigBundle/composer.json

@@ -19,9 +19,9 @@
         "php": "^7.2.9",
         "symfony/config": "^4.4|^5.0",
         "symfony/error-renderer": "^4.4|^5.0",
-        "symfony/twig-bridge": "^4.4|^5.0",
+        "symfony/twig-bridge": "^5.0",
         "symfony/http-foundation": "^4.4|^5.0",
-        "symfony/http-kernel": "^4.4|^5.0",
+        "symfony/http-kernel": "^5.0",
         "symfony/polyfill-ctype": "~1.8",
         "twig/twig": "^2.10"
     },