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minor #2462 [LiveComponent] Allow configuring secret for fingerprints and checksums (smnandre)
This PR was squashed before being merged into the 2.x branch. Discussion ---------- [LiveComponent] Allow configuring secret for fingerprints and checksums | Q | A | ------------- | --- | Bug fix? | no | New feature? | yes | Issues | Fix #2453 | License | MIT Allow to configure a dedicated secret (used in FingerprintCalculator and LiveComonentHydrator) Suggested by `@dkarlovi` in #2453 Implementation inspired by [symfony #56840](symfony/symfony#56840) Should be merged _after_ #2461 Commits ------- a641a2e [LiveComponent] Allow configuring secret for fingerprints and checksums
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‎src/LiveComponent/CHANGELOG.md‎

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# CHANGELOG
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## 2.23.0
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- Allow configuring the secret used to compute fingerprints and checksums.
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## 2.22.0
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- Remove CSRF tokens - rely on same-origin/CORS instead

‎src/LiveComponent/src/DependencyInjection/LiveComponentExtension.php‎

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namespace Symfony\UX\LiveComponent\DependencyInjection;
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use Symfony\Component\AssetMapper\AssetMapperInterface;
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use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
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use Symfony\Component\Config\Definition\Builder\TreeBuilder;
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use Symfony\Component\Config\Definition\ConfigurationInterface;
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use Symfony\Component\DependencyInjection\Argument\TaggedIteratorArgument;
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use Symfony\Component\DependencyInjection\ChildDefinition;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\ContainerInterface;
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use Symfony\UX\TwigComponent\ComponentFactory;
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use Symfony\UX\TwigComponent\ComponentRenderer;
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use function Symfony\Component\DependencyInjection\Loader\Configurator\tagged_iterator;
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/**
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* @author Kevin Bond <kevinbond@gmail.com>
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*
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* @internal
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*/
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final class LiveComponentExtension extends Extension implements PrependExtensionInterface
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final class LiveComponentExtension extends Extension implements PrependExtensionInterface, ConfigurationInterface
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{
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public const TEMPLATES_MAP_FILENAME = 'live_components_twig_templates.map';
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}
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);
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$configuration = $this->getConfiguration($configs, $container);
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$config = $this->processConfiguration($configuration, $configs);
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$container->registerForAutoconfiguration(HydrationExtensionInterface::class)
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->addTag(LiveComponentBundle::HYDRATION_EXTENSION_TAG);
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$container->register('ux.live_component.component_hydrator', LiveComponentHydrator::class)
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->setArguments([
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tagged_iterator(LiveComponentBundle::HYDRATION_EXTENSION_TAG),
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new TaggedIteratorArgument(LiveComponentBundle::HYDRATION_EXTENSION_TAG),
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new Reference('property_accessor'),
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new Reference('ux.live_component.metadata_factory'),
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new Reference('serializer', ContainerInterface::NULL_ON_INVALID_REFERENCE),
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'%kernel.secret%',
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$config['secret'], // defaults to '%kernel.secret%'
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])
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;
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$container->register('ux.live_component.deterministic_id_calculator', DeterministicTwigIdCalculator::class);
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$container->register('ux.live_component.fingerprint_calculator', FingerprintCalculator::class)
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->setArguments(['%kernel.secret%']);
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->setArguments([$config['secret']]); // default to %kernel.secret%
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$container->setAlias(ComponentValidatorInterface::class, ComponentValidator::class);
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->addTag('kernel.cache_warmer');
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}
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public function getConfigTreeBuilder(): TreeBuilder
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{
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$treeBuilder = new TreeBuilder('live_component');
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$rootNode = $treeBuilder->getRootNode();
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\assert($rootNode instanceof ArrayNodeDefinition);
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$rootNode
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->addDefaultsIfNotSet()
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->children()
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->scalarNode('secret')
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->info('The secret used to compute fingerprints and checksums')
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->beforeNormalization()
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->ifString()
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->then(trim(...))
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->end()
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->cannotBeEmpty()
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->defaultValue('%kernel.secret%')
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->end()
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->end()
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;
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return $treeBuilder;
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}
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public function getConfiguration(array $config, ContainerBuilder $container): ConfigurationInterface
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{
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return $this;
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}
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private function isAssetMapperAvailable(ContainerBuilder $container): bool
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{
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if (!interface_exists(AssetMapperInterface::class)) {

‎src/LiveComponent/tests/Unit/DependencyInjection/LiveComponentConfigurationTest.php‎

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\UX\LiveComponent\Tests\Unit\DependencyInjection;
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use PHPUnit\Framework\TestCase;
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use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
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use Symfony\Component\Config\Definition\Processor;
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use Symfony\UX\LiveComponent\DependencyInjection\LiveComponentExtension;
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class LiveComponentConfigurationTest extends TestCase
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{
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public function testDefaultSecret()
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{
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$processor = new Processor();
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$config = $processor->processConfiguration(new LiveComponentExtension(), []);
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$this->assertEquals('%kernel.secret%', $config['secret']);
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}
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public function testEmptySecretThrows()
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{
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$this->expectException(InvalidConfigurationException::class);
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$this->expectExceptionMessage('The path "live_component.secret" cannot contain an empty value, but got null.');
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$processor = new Processor();
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$config = $processor->processConfiguration(new LiveComponentExtension(), [
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'live_component' => [
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'secret' => null,
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],
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]);
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}
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public function testCustomSecret()
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{
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$processor = new Processor();
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$config = $processor->processConfiguration(new LiveComponentExtension(), [
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'live_component' => [
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'secret' => 'my_secret',
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],
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]);
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$this->assertEquals('my_secret', $config['secret']);
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}
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}

‎src/LiveComponent/tests/Unit/DependencyInjection/LiveComponentExtensionTest.php‎

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\UX\LiveComponent\Tests\Unit\DependencyInjection;
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use PHPUnit\Framework\TestCase;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
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use Symfony\UX\LiveComponent\DependencyInjection\LiveComponentExtension;
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class LiveComponentExtensionTest extends TestCase
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{
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public function testKernelSecretIsUsedByDefault(): void
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{
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$container = $this->createContainer();
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$container->registerExtension(new LiveComponentExtension());
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$container->loadFromExtension('live_component', []);
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$this->compileContainer($container);
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$this->assertSame('%kernel.secret%', $container->getDefinition('ux.live_component.component_hydrator')->getArgument(4));
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$this->assertSame('%kernel.secret%', $container->getDefinition('ux.live_component.fingerprint_calculator')->getArgument(0));
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}
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public function testCustomSecretIsUsedInDefinition(): void
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{
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$container = $this->createContainer();
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$container->registerExtension(new LiveComponentExtension());
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$container->loadFromExtension('live_component', [
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'secret' => 'custom_secret',
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]);
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$this->compileContainer($container);
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$this->assertSame('custom_secret', $container->getDefinition('ux.live_component.component_hydrator')->getArgument(4));
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$this->assertSame('custom_secret', $container->getDefinition('ux.live_component.fingerprint_calculator')->getArgument(0));
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}
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private function createContainer(): ContainerBuilder
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{
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$container = new ContainerBuilder(new ParameterBag([
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'kernel.cache_dir' => __DIR__,
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'kernel.project_dir' => __DIR__,
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'kernel.charset' => 'UTF-8',
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'kernel.debug' => false,
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'kernel.bundles' => [],
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'kernel.bundles_metadata' => [],
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]));
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return $container;
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}
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private function compileContainer(ContainerBuilder $container): void
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{
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$container->getCompilerPassConfig()->setOptimizationPasses([]);
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$container->getCompilerPassConfig()->setRemovingPasses([]);
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$container->getCompilerPassConfig()->setAfterRemovingPasses([]);
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$container->compile();
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}
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}

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