symfony
diff --git a/‎src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
Lines changed: 4 additions & 6 deletions b/‎src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
Lines changed: 4 additions & 6 deletions
diff --git a/‎src/Symfony/Bundle/TwigBundle/DependencyInjection/Configurator/EnvironmentConfigurator.php
Lines changed: 6 additions & 6 deletions b/‎src/Symfony/Bundle/TwigBundle/DependencyInjection/Configurator/EnvironmentConfigurator.php
Lines changed: 6 additions & 6 deletions
diff --git a/‎src/Symfony/Bundle/TwigBundle/TemplateIterator.php
Lines changed: 5 additions & 5 deletions b/‎src/Symfony/Bundle/TwigBundle/TemplateIterator.php
Lines changed: 5 additions & 5 deletions
@@ -24,9 +24,9 @@
  */
 class TemplateCacheWarmer implements CacheWarmerInterface, ServiceSubscriberInterface
 {
-    private $container;
-    private $twig;
-    private $iterator;
+    private ContainerInterface $container;
+    private Environment $twig;
+    private iterable $iterator;
 
     public function __construct(ContainerInterface $container, iterable $iterator)
     {
@@ -42,9 +42,7 @@ public function __construct(ContainerInterface $container, iterable $iterator)
      */
     public function warmUp(string $cacheDir): array
     {
-        if (null === $this->twig) {
-            $this->twig = $this->container->get('twig');
-        }
+        $this->twig ??= $this->container->get('twig');
 
         $files = [];
 
 
@@ -24,12 +24,12 @@ class_exists(Environment::class);
  */
 class EnvironmentConfigurator
 {
-    private $dateFormat;
-    private $intervalFormat;
-    private $timezone;
-    private $decimals;
-    private $decimalPoint;
-    private $thousandsSeparator;
+    private string $dateFormat;
+    private string $intervalFormat;
+    private ?string $timezone;
+    private int $decimals;
+    private string $decimalPoint;
+    private string $thousandsSeparator;
 
     public function __construct(string $dateFormat, string $intervalFormat, ?string $timezone, int $decimals, string $decimalPoint, string $thousandsSeparator)
     {
 
@@ -23,10 +23,10 @@
  */
 class TemplateIterator implements \IteratorAggregate
 {
-    private $kernel;
-    private $templates;
-    private $paths;
-    private $defaultPath;
+    private KernelInterface $kernel;
+    private \Traversable $templates;
+    private array $paths;
+    private ?string $defaultPath;
 
     /**
      * @param array       $paths       Additional Twig paths to warm
@@ -41,7 +41,7 @@ public function __construct(KernelInterface $kernel, array $paths = [], string $
 
     public function getIterator(): \Traversable
     {
-        if (null !== $this->templates) {
+        if (isset($this->templates)) {
             return $this->templates;
         }