Compiler pass to declare a repository as service for each declared doctrine entity in a symfony application

compiler-pass.php

<?php

final class RegisterRepositoriesForAllEntitiesPass implements CompilerPassInterface
{
    /** {@inheritdoc} */
    public function process(ContainerBuilder $container)
    {
        /** @var MappingDriver $metadata */
        $metadata = $container->get($this->mappingDriverServiceName());
        $entityManagerReference = new Reference('doctrine.orm.entity_manager');

        Assert::isInstanceOf($metadata, MappingDriver::class);

        $allClassNames = $metadata->getAllClassNames();

        $repositoryDefinitions = array_combine(
            array_map(static function (string $entity): string {
                return $entity.'.repository';
            }, $allClassNames),
            array_map(
                static function (string $entity) use ($entityManagerReference): Definition {
                    $definition = new Definition(EntityRepository::class);

                    $definition->setFactory([$entityManagerReference, 'getRepository']);
                    $definition->setArgument(0, $entity);

                    return $definition;
                },
                $allClassNames
            )
        );

        Assert::isArray($repositoryDefinitions);

        $container->addDefinitions($repositoryDefinitions);
    }

    // ...
}