fixing phpstan

Author: samsonasik

phpstan.neon

@@ -71,4 +71,7 @@ parameters:
         -
             identifier: phpstanApi.instanceofAssumption
 
+        -
+            identifier: phpstanApi.varTagAssumption
+
         - '#Asking about instanceof PHPStan\\.* is not covered by backward compatibility promise#'

rules/DowngradePhp80/Reflection/DefaultParameterValueResolver.php

@@ -4,6 +4,9 @@
 
 namespace Rector\DowngradePhp80\Reflection;
 
+use PHPStan\Type\Constant\ConstantStringType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\NullType;
 use PhpParser\BuilderHelpers;
 use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ConstFetch;
@@ -50,6 +53,7 @@ private function resolveValueFromType(Type $constantType): ConstFetch | Expr
             return BuilderHelpers::normalizeValue($values);
         }
 
+        /** @var ConstantStringType|ConstantIntegerType|NullType $constantType */
         return BuilderHelpers::normalizeValue($constantType->getValue());
     }
 

rules/DowngradePhp81/NodeFactory/ArrayMergeFromArraySpreadFactory.php

@@ -91,7 +91,7 @@ private function createArrayMergeFuncCall(array $arrayItems, MutatingScope $muta
     }
 
     /**
-     * @param array<(ArrayItem | null)> $items
+     * @param array<ArrayItem> $items
      */
     private function createArrayItemFromArray(array $items): ArrayItem
     {