fix: Symfony 8 compatibility

composer.json

@@ -23,9 +23,9 @@
     "require": {
         "php": "^8.2",
         "symfony/cache-contracts": "^2.5 || ^3.3",
-        "symfony/config": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/dependency-injection": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/http-kernel": "^5.4 || ^6.0 || ^7.0 || ^8.0"
+        "symfony/config": "^6.1 || ^7.0 || ^8.0",
+        "symfony/dependency-injection": "^6.1 || ^7.0 || ^8.0",
+        "symfony/http-kernel": "^6.1 || ^7.0 || ^8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^11.1",

config/services.php

@@ -0,0 +1,12 @@
+<?php
+declare(strict_types=1);
+
+use Pixelshaped\FlatMapperBundle\FlatMapper;
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+
+return static function (ContainerConfigurator $container): void {
+    $services = $container->services();
+
+    $services->set('pixelshaped_flat_mapper.flat_mapper', FlatMapper::class)->public();
+    $services->alias(FlatMapper::class, 'pixelshaped_flat_mapper.flat_mapper');
+};

src/PixelshapedFlatMapperBundle.php

@@ -16,7 +16,7 @@ class PixelshapedFlatMapperBundle extends AbstractBundle
      */
     public function loadExtension(array $config, ContainerConfigurator $container, ContainerBuilder $builder): void
     {
-        $container->import('../config/services.xml');
+        $container->import('../config/services.php');
 
         $flatMapper = $builder->getDefinition('pixelshaped_flat_mapper.flat_mapper');
         if($config['cache_service'] !== null) {

tests/Functional/BundleFunctionalTest.php

@@ -43,7 +43,7 @@ public function registerBundles(): iterable
             new PixelshapedFlatMapperBundle(),
         ];
     }
-    public function registerContainerConfiguration(LoaderInterface $loader)
+    public function registerContainerConfiguration(LoaderInterface $loader): void
     {
     }
 }
@@ -56,7 +56,7 @@ public function registerBundles(): iterable
             new PixelshapedFlatMapperBundle(),
         ];
     }
-    public function registerContainerConfiguration(LoaderInterface $loader)
+    public function registerContainerConfiguration(LoaderInterface $loader): void
     {
         $loader->load(function ($container) {
             // Register a mock cache service
@@ -99,4 +99,4 @@ public function tag(iterable|string $tags): static { return $this; }
             public function getMetadata(): array { return []; }
         };
     }
-}
+}