requireImplements.deprecatedClass

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewService instead */
class OldService
{
}

/**
 * @phpstan-require-implements OldService
 */
trait MyTrait
{
}

Why is it reported?

This error is reported by the phpstan-deprecation-rules extension.

A @phpstan-require-implements PHPDoc tag references a class that has been marked as @deprecated. Deprecated classes are planned for removal in a future version.

Note: triggering this identifier requires @phpstan-require-implements to reference a class, but this tag expects an interface. PHPStan therefore always also reports a requireImplements.class error alongside this one, and in practice the deprecation identifier is not reported.

How to fix it

Replace the deprecated class with a proper interface reference:

 /**
- * @phpstan-require-implements OldService
+ * @phpstan-require-implements NewServiceInterface
  */
 trait MyTrait
 {
 }