rector/config/set/php84.php

<?php

declare (strict_types=1);
namespace RectorPrefix202404;

use Rector\Config\RectorConfig;
use Rector\Php84\Rector\Param\ExplicitNullableParamTypeRector;
return static function (RectorConfig $rectorConfig) : void {
    $rectorConfig->rules([ExplicitNullableParamTypeRector::class]);
};