TypedStaticPropertyInBehatContextRector

Add known property types to Behat context static properties

 use Behat\Behat\Context\Context;

 final class FeatureContext implements Context
 {
-    /**
-     * @var SomeObject
-     */
-    public static $someStaticProperty;
+    public static ?SomeObject $someStaticProperty = null;
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Class_\TypedStaticPropertyInBehatContextRector;

return RectorConfig::configure()
    ->withRules([
        TypedStaticPropertyInBehatContextRector::class,
    ]);