mixin.deprecatedEnum

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewEnum instead */
enum OldEnum
{
	case A;
}

/**
 * @mixin OldEnum
 */
class Foo
{
}

Why is it reported?

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

A @mixin PHPDoc tag references an enum that has been marked as @deprecated. Deprecated types are planned for removal in a future version, and PHPDoc annotations should not rely on them.

How to fix it

Update the @mixin tag to reference the replacement type:

 <?php declare(strict_types = 1);

 /**
- * @mixin OldEnum
+ * @mixin NewEnum
  */
 class Foo
 {
 }