return.deprecatedTrait

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewHelper instead */
trait OldHelper
{
}

class Foo
{
    public function create(): OldHelper
    {
        // ...
    }
}

Why is it reported?

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

The return type of a function or method references a trait marked with a @deprecated PHPDoc tag. Deprecated traits are scheduled for removal, and return types referencing them should be updated to use the recommended replacement.

How to fix it

Replace the deprecated trait with its recommended replacement in the return type:

 <?php declare(strict_types = 1);

 class Foo
 {
-    public function create(): OldHelper
+    public function create(): NewHelper
     {
         // ...
     }
 }