ldc-mesbr-app/src/Domain/Models/ValueObjects/Campaign/CampaignCode.php

<?php

declare(strict_types=1);

namespace Domain\Models\ValueObjects\Campaign;

final readonly class CampaignCode
{
    public function __construct(
        public string $code,
    ) {
        $trimmed = mb_trim($code);

        if ($trimmed === '') {
            throw new \DomainException('Campaign code cannot be empty.');
        }
    }
}