generics.deprecatedTraitBound

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewTrait instead */
trait OldTrait
{
}

/**
 * @template T of OldTrait
 */
class Foo
{
}

Why is it reported?

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

The @template bound references a trait that has been marked as @deprecated. Deprecated types should no longer be used as they may be removed in a future version.

How to fix it

Replace the deprecated trait with the recommended replacement in the template bound:

 /**
- * @template T of OldTrait
+ * @template T of NewTrait
  */
 class Foo
 {
 }