generics.deprecatedClassBound

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewBaseClass instead */
class OldBaseClass
{
}

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

Why is it reported?

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

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

How to fix it

Replace the deprecated class with its suggested replacement in the template bound:

 <?php declare(strict_types = 1);

 /**
- * @template T of OldBaseClass
+ * @template T of NewBaseClass
  */
 class Repository
 {
 }