From 9708f61a01bf0709ef1f3beb534876475f388b4b Mon Sep 17 00:00:00 2001
From: Abdul Malik Ikhsan <samsonasik@gmail.com>
Date: Thu, 22 Aug 2024 22:17:18 +0700
Subject: [PATCH] clean

---
 .../Rector/Param/ExplicitNullableParamTypeRector.php     | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php b/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php
index 79950fcfe1..1479f5c043 100644
--- a/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php
+++ b/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php
@@ -70,6 +70,15 @@ public function refactor(Node $node): ?Param
             return null;
         }
 
+        $newNodeType = TypeCombinator::addNull($nodeType);
+        $paramType = $this->staticTypeMapper->mapPHPStanTypeToPhpParserNode($newNodeType, TypeKind::PARAM);
+
+        // ensure it process valid Node, otherwise, just return null
+        if ($paramType === null) {
+            return null;
+        }
+
+        // re-use existing node instead of reprint Node that may cause unnecessary FQCN
         if ($node->type instanceof UnionType) {
             $node->type->types[] = new ConstFetch(new Name('null'));
         } else {