sealed.onEnum

Code example

<?php declare(strict_types = 1);

/**
 * @phpstan-sealed SomeClass
 */
enum Status
{
	case Active;
	case Inactive;
}

Why is it reported?

The @phpstan-sealed PHPDoc tag is placed on an enum. This tag restricts which types can extend or implement a given type, but enums in PHP cannot be extended. Enums are implicitly final, so there are no subtypes to restrict. The @phpstan-sealed tag is only valid on classes and interfaces.

How to fix it

Remove the @phpstan-sealed tag from the enum:

-/**
- * @phpstan-sealed SomeClass
- */
 enum Status
 {
 	case Active;
 	case Inactive;
 }

If sealed type restrictions are needed, use an interface or abstract class instead:

 /**
  * @phpstan-sealed FooHandler|BarHandler
  */
-enum Status
+interface Handler
 {
 }