Fix type resolution for traversable

packages/NodeTypeResolver/src/NodeTypeResolver.php

@@ -163,7 +163,15 @@ public function isObjectType(Node $node, $requiredType): bool
             return true;
         }
 
-        return $resolvedType->isSuperTypeOf($requiredType)->yes();
+        if ($resolvedType instanceof UnionType) {
+            foreach ($resolvedType->getTypes() as $unionedType) {
+                if ($unionedType->equals($requiredType)) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
     }
 
     public function getObjectType(Node $node): Type

packages/Symfony/src/Rector/New_/StringToArrayArgumentProcessRector.php

@@ -113,7 +113,8 @@ private function processStringType(Node $node, int $argumentPosition, Node $firs
             return;
         }
 
-        if ($firstArgument instanceof FuncCall && $this->isName($firstArgument, 'sprintf')) {
+        if ($this->isFunctionNamed($firstArgument, 'sprintf')) {
+            /** @var FuncCall $firstArgument */
             $arrayNode = $this->nodeTransformer->transformSprintfToArray($firstArgument);
             if ($arrayNode !== null) {
                 $node->args[$argumentPosition]->value = $arrayNode;
@@ -131,11 +132,10 @@ private function processPreviousAssign(Node $node, Node $firstArgument): void
         /** @var Assign|null $createdNode */
         $createdNode = $this->findPreviousNodeAssign($node, $firstArgument);
 
-        if ($createdNode instanceof Assign && $createdNode->expr instanceof FuncCall && $this->isName(
-            $createdNode->expr,
-            'sprintf'
-        )) {
-            $arrayNode = $this->nodeTransformer->transformSprintfToArray($createdNode->expr);
+        if ($createdNode instanceof Assign && $this->isFunctionNamed($createdNode->expr, 'sprintf')) {
+            /** @var FuncCall $funcCall */
+            $funcCall = $createdNode->expr;
+            $arrayNode = $this->nodeTransformer->transformSprintfToArray($funcCall);
             if ($arrayNode !== null) {
                 $createdNode->expr = $arrayNode;
             }
@@ -160,4 +160,13 @@ private function findPreviousNodeAssign(Node $node, Node $firstArgument): ?Assig
             return $checkedNode;
         });
     }
+
+    private function isFunctionNamed(Node $node, string $name): bool
+    {
+        if (! $node instanceof FuncCall) {
+            return false;
+        }
+
+        return $this->isName($node, $name);
+    }
 }

phpstan.neon

@@ -209,3 +209,4 @@ parameters:
         - '#In method "Rector\\Rector\\AbstractRector\:\:isDoctrineEntityClass", parameter \$class has no type\-hint and no @param annotation\. More info\: http\://bit\.ly/usetypehint#'
         - '#In method "Rector\\FileSystemRector\\Rector\\AbstractFileSystemRector\:\:moveFile", parameter \$nodes type is "array"\. Please provide a @param annotation to further specify the type of the array\. For instance\: @param int\[\] \$nodes\. More info\: http\://bit\.ly/typehintarray#'
         - '#Parameter \#1 \$items of class PhpParser\\Node\\Expr\\Array_ constructor expects array<PhpParser\\Node\\Expr\\ArrayItem\>, array<PhpParser\\Node\\Expr\\ArrayItem\|null\> given#'
+        - '#Parameter \#1 \$sprintfFuncCall of method Rector\\PhpParser\\NodeTransformer\:\:transformSprintfToArray\(\) expects PhpParser\\Node\\Expr\\FuncCall, PhpParser\\Node given#'