Symfony version(s) affected

7.1-RC1

Description

The Serializer component switched to the new TypeInfo component and now our serialization breaks:

Symfony\Component\TypeInfo\Exception\LogicException : Cannot get base type on "int|string" compound type.

How to reproduce

final readonly class AddToCart
{
    /**
     * @param array<string, string|int> $metadata
     */
    public function __construct(
        public string $cartId,
        public array $metadata,
    ) {}
}

Symfony\Component\TypeInfo\Exception\LogicException : Cannot get base type on "int|string" compound type.
/Volumes/CS/www/cosmos/vendor/symfony/type-info/Type/UnionType.php:48
/Volumes/CS/www/cosmos/vendor/symfony/serializer/Normalizer/AbstractObjectNormalizer.php:705
/Volumes/CS/www/cosmos/vendor/symfony/serializer/Normalizer/AbstractObjectNormalizer.php:830
/Volumes/CS/www/cosmos/vendor/symfony/serializer/Normalizer/AbstractNormalizer.php:371
/Volumes/CS/www/cosmos/vendor/symfony/serializer/Normalizer/AbstractObjectNormalizer.php:239
/Volumes/CS/www/cosmos/vendor/symfony/serializer/Normalizer/AbstractObjectNormalizer.php:335
/Volumes/CS/www/cosmos/vendor/symfony/serializer/Serializer.php:238
/Volumes/CS/www/cosmos/vendor/symfony/serializer/Serializer.php:143

Possible Solution

No response

Additional Context

No response