minor #26990 declare types in array_map callbacks (DQNEO)

This PR was squashed before being merged into the 4.1-dev branch (closes #26990).

Discussion
----------

declare types in array_map callbacks

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

This is a continuation of symfony/symfony#26821

Commits
-------

e7d5634cf4 declare types in array_map callbacks

Author: fabpot

Loader/Configurator/ContainerConfigurator.php

@@ -16,6 +16,7 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
 use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
 use Symfony\Component\ExpressionLanguage\Expression;
 
@@ -45,7 +46,7 @@ public function __construct(ContainerBuilder $container, PhpFileLoader $loader,
     final public function extension(string $namespace, array $config)
     {
         if (!$this->container->hasExtension($namespace)) {
-            $extensions = array_filter(array_map(function ($ext) { return $ext->getAlias(); }, $this->container->getExtensions()));
+            $extensions = array_filter(array_map(function (ExtensionInterface $ext) { return $ext->getAlias(); }, $this->container->getExtensions()));
             throw new InvalidArgumentException(sprintf(
                 'There is no extension able to load the configuration for "%s" (in %s). Looked for namespace "%s", found %s',
                 $namespace,

Tests/Loader/XmlFileLoaderTest.php

@@ -13,6 +13,7 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
+use Symfony\Component\DependencyInjection\Argument\BoundArgument;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
@@ -776,7 +777,7 @@ public function testBindings()
             '$foo' => array(null),
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
         $this->assertEquals(array(
             'quz',
             null,
@@ -793,6 +794,6 @@ public function testBindings()
             'NonExistent' => null,
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
     }
 }

Tests/Loader/YamlFileLoaderTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\DependencyInjection\Tests\Loader;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\Argument\BoundArgument;
 use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Reference;
@@ -719,7 +720,7 @@ public function testBindings()
             '$foo' => array(null),
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
         $this->assertEquals(array(
             'quz',
             null,
@@ -736,6 +737,6 @@ public function testBindings()
             'NonExistent' => null,
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
     }
 }