skip private method

build/config/config-downgrade.php

@@ -2,13 +2,16 @@
 
 declare(strict_types=1);
 
+use PHPStan\PhpDocParser\Ast\Node;
 use Rector\Core\Configuration\Option;
 use Rector\Core\Contract\Rector\RectorInterface;
 use Rector\Core\Stubs\PHPStanStubLoader;
 use Rector\DowngradePhp72\Rector\ClassMethod\DowngradeParameterTypeWideningRector;
+use Rector\NodeNameResolver\Contract\NodeNameResolverInterface;
 use Rector\Set\ValueObject\DowngradeSetList;
 use Symfony\Component\Console\Style\StyleInterface;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+use Symplify\SimplePhpDocParser\Contract\PhpDocNodeVisitorInterface;
 
 $phpStanStubLoader = new PHPStanStubLoader();
 $phpStanStubLoader->loadStubs();
@@ -32,6 +35,9 @@
             DowngradeParameterTypeWideningRector::SAFE_TYPES => [
                 RectorInterface::class,
                 StyleInterface::class,
+                PhpDocNodeVisitorInterface::class,
+                Node::class,
+                NodeNameResolverInterface::class,
             ]
         ]]);
 };

rules-tests/DowngradePhp72/Rector/ClassMethod/DowngradeParameterTypeWideningRector/Fixture/skip_private_method.php.inc

@@ -0,0 +1,10 @@
+<?php
+
+namespace Rector\Tests\DowngradePhp72\Rector\ClassMethod\DowngradeParameterTypeWideningRector\Fixture;
+
+class SkipPrivateMethod
+{
+    private function has(string $callable)
+    {
+    }
+}

rules/DowngradePhp72/Rector/ClassMethod/DowngradeParameterTypeWideningRector.php

@@ -116,6 +116,10 @@ public function refactor(Node $node): ?Node
             }
         }
 
+        if ($node->isPrivate()) {
+            return null;
+        }
+
         if ($this->skipClassMethod($node)) {
             return null;
         }