Skip mixed in ParamTypeByMethodCallTypeRector as not specific

phpstan.neon

@@ -431,3 +431,4 @@ parameters:
         -
             message: '#Parameters should use "array" types as the only types passed to this method#'
             path: src/Util/NodePrinter.php
+        - '#Cognitive complexity for "Rector\\TypeDeclaration\\NodeAnalyzer\\CallerParamMatcher\:\:matchCallParamType\(\)" is 12, keep it under 11#'

rules-tests/TypeDeclaration/Rector/ClassMethod/ParamTypeByMethodCallTypeRector/Fixture/skip_mixed_as_not_precise.php.inc

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\ParamTypeByMethodCallTypeRector\Fixture;
+
+final class SkipMixedAsNotPrecise
+{
+    public function run($value)
+    {
+        $this->processArray($value);
+    }
+
+    private function processArray(mixed $value)
+    {
+    }
+}

rules/TypeDeclaration/NodeAnalyzer/CallerParamMatcher.php

@@ -21,6 +21,7 @@
 use PhpParser\Node\UnionType;
 use PHPStan\Analyser\Scope;
 use PHPStan\Reflection\ClassReflection;
+use PHPStan\Type\MixedType;
 use PHPStan\Type\NullType;
 use Rector\NodeNameResolver\NodeNameResolver;
 use Rector\NodeTypeResolver\TypeComparator\TypeComparator;
@@ -48,6 +49,11 @@ public function matchCallParamType(
         }
 
         if (! $param->default instanceof Expr && ! $callParam->default instanceof Expr) {
+            // skip as mixed is not helpful and possibly requires more precise change elsewhere
+            if ($this->isCallParamMixed($callParam)) {
+                return null;
+            }
+
             return $callParam->type;
         }
 
@@ -162,4 +168,14 @@ private function resolveParentMethodParam(Scope $scope, string $methodName, int
 
         return null;
     }
+
+    private function isCallParamMixed(Param $param): bool
+    {
+        if (! $param->type instanceof Node) {
+            return false;
+        }
+
+        $callParamType = $this->staticTypeMapper->mapPhpParserNodePHPStanType($param->type);
+        return $callParamType instanceof MixedType;
+    }
 }

src/Application/FileProcessor.php

@@ -4,6 +4,7 @@
 
 namespace Rector\Application;
 
+use Nette\Utils\Strings;
 use PHPStan\AnalysedCodeException;
 use Rector\Caching\Detector\ChangedFilesDetector;
 use Rector\ChangesReporting\ValueObjectFactory\ErrorFactory;
@@ -24,7 +25,6 @@
 use Rector\ValueObject\Reporting\FileDiff;
 use Symfony\Component\Console\Style\SymfonyStyle;
 use Throwable;
-use Nette\Utils\Strings;
 
 final readonly class FileProcessor
 {
@@ -156,7 +156,11 @@ private function printFile(File $file, Configuration $configuration, string $fil
 
             // handle space before <?php
             $ltrimNewContent = Strings::replace($newContent, self::OPEN_TAG_SPACED_REGEX, '<?php');
-            $ltrimOriginalFileContent = Strings::replace($ltrimOriginalFileContent, self::OPEN_TAG_SPACED_REGEX, '<?php');
+            $ltrimOriginalFileContent = Strings::replace(
+                $ltrimOriginalFileContent,
+                self::OPEN_TAG_SPACED_REGEX,
+                '<?php'
+            );
             if ($ltrimOriginalFileContent === $ltrimNewContent) {
                 return;
             }

src/Autoloading/BootstrapFilesIncluder.php

@@ -47,10 +47,8 @@ private function requireRectorStubs(): void
             return;
         }
 
-        $dir = new RecursiveDirectoryIterator(
-            $stubsRectorDirectory,
-            RecursiveDirectoryIterator::SKIP_DOTS
-        );
+        $dir = new RecursiveDirectoryIterator($stubsRectorDirectory, RecursiveDirectoryIterator::SKIP_DOTS);
+
         /** @var SplFileInfo[] $stubs */
         $stubs = new RecursiveIteratorIterator($dir);