generics.deprecatedInterfaceBound

This error is reported by phpstan/phpstan-deprecation-rules.

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewInterface instead */
interface OldInterface
{
}

/**
 * @template T of OldInterface
 */
class Repository
{
}

Why is it reported?

A @template tag uses a deprecated interface as its bound type. The interface referenced in the of clause has been marked with the @deprecated PHPDoc tag, indicating it is scheduled for removal or replacement. When the deprecated interface is removed, the template bound will become invalid.

How to fix it

Replace the deprecated interface with its recommended replacement in the template bound:

 <?php declare(strict_types = 1);

 /**
- * @template T of OldInterface
+ * @template T of NewInterface
  */
 class Repository
 {
 }