[Support] How to use MixedType with AddParamTypeDeclarationRector Rule?

[SMAtaurRahman]

Question

Hi, sorry for asking the question here.

I am currently upgrading a project to PHP 8.1 and Rector is just being awesome at it.

But, some of the builtin interfaces now has type declaration (eg. ArrayAccess, Iterator), and PHP throws Deprecation notice if any class implements them but contains no type declaration.

To avoid using #[\ReturnTypeWillChange], I want to add type declaration to the classes as they are in interfaces.
To do that I'm using two rules: AddParamTypeDeclarationRector & AddReturnTypeDeclarationRector. Both of them works fine except for MixedType.
When I'm trying to add mixed as parameter or return type, rector just ignoring it. Maybe I'm doing something wrong. Can you please guide me.

Here is a example code that I'm using:

use PHPStan\Type\MixedType;
use Rector\TypeDeclaration\Rector\ClassMethod\AddParamTypeDeclarationRector;
use Rector\TypeDeclaration\ValueObject\AddParamTypeDeclaration;
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;

return static function (ContainerConfigurator $containerConfigurator): void {
    $services = $containerConfigurator->services();
    $services->set(AddParamTypeDeclarationRector::class)
      ->configure(
          [
              new AddParamTypeDeclaration(\ArrayAccess::class, 'offsetSet', 0, new MixedType(true)),
              new AddParamTypeDeclaration(\ArrayAccess::class, 'offsetSet', 1, new MixedType(false)), // I don't know what isExplicitMixed means here
          ]
    );
};

Sorry for wasting your time.

[TomasVotruba]

Hi, thanks for clear reporting 👍

The mixed on param was actually mised till now. I've added this feature in rectorphp/rector-src#1476