diff --git a/packages/better-php-doc-parser/src/AnnotationReader/NodeAnnotationReader.php b/packages/better-php-doc-parser/src/AnnotationReader/NodeAnnotationReader.php
index 0e6f50d69047..74d1e8c22044 100644
--- a/packages/better-php-doc-parser/src/AnnotationReader/NodeAnnotationReader.php
+++ b/packages/better-php-doc-parser/src/AnnotationReader/NodeAnnotationReader.php
@@ -87,7 +87,7 @@ public function readClassAnnotation(Class_ $class, string $annotationClassName):
     public function readPropertyAnnotation(Property $property, string $annotationClassName): ?object
     {
         $propertyReflection = $this->createPropertyReflectionFromPropertyNode($property);
-        if ($propertyReflection === null) {
+        if (! $propertyReflection instanceof ReflectionProperty) {
             return null;
         }
 
diff --git a/packages/better-php-doc-parser/src/PhpDocInfo/PhpDocInfoFactory.php b/packages/better-php-doc-parser/src/PhpDocInfo/PhpDocInfoFactory.php
index 6958ead830c6..9b58c0c0e5f6 100644
--- a/packages/better-php-doc-parser/src/PhpDocInfo/PhpDocInfoFactory.php
+++ b/packages/better-php-doc-parser/src/PhpDocInfo/PhpDocInfoFactory.php
@@ -4,6 +4,7 @@
 
 namespace Rector\BetterPhpDocParser\PhpDocInfo;
 
+use PhpParser\Comment\Doc;
 use PhpParser\Node;
 use PHPStan\PhpDocParser\Lexer\Lexer;
 use PHPStan\PhpDocParser\Parser\PhpDocParser;
@@ -98,7 +99,7 @@ public function createFromNode(Node $node): ?PhpDocInfo
         $this->currentNodeProvider->setNode($node);
 
         $docComment = $node->getDocComment();
-        if ($docComment === null) {
+        if (! $docComment instanceof Doc) {
             if ($node->getComments() !== []) {
                 return null;
             }
diff --git a/packages/better-php-doc-parser/src/PhpDocManipulator/PhpDocTypeChanger.php b/packages/better-php-doc-parser/src/PhpDocManipulator/PhpDocTypeChanger.php
index 524ab6fd2011..b0234c1a71b9 100644
--- a/packages/better-php-doc-parser/src/PhpDocManipulator/PhpDocTypeChanger.php
+++ b/packages/better-php-doc-parser/src/PhpDocManipulator/PhpDocTypeChanger.php
@@ -4,6 +4,7 @@
 
 namespace Rector\BetterPhpDocParser\PhpDocManipulator;
 
+use PhpParser\Node;
 use PhpParser\Node\Param;
 use PHPStan\Type\Constant\ConstantArrayType;
 use PHPStan\Type\MixedType;
@@ -143,7 +144,7 @@ public function changeParamType(PhpDocInfo $phpDocInfo, Type $newType, Param $pa
     private function notifyChange(): void
     {
         $node = $this->currentNodeProvider->getNode();
-        if ($node === null) {
+        if (! $node instanceof Node) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/packages/better-php-doc-parser/src/PhpDocParser/BetterPhpDocParser.php b/packages/better-php-doc-parser/src/PhpDocParser/BetterPhpDocParser.php
index e3e0fa2e3afd..9dbb65d01be2 100644
--- a/packages/better-php-doc-parser/src/PhpDocParser/BetterPhpDocParser.php
+++ b/packages/better-php-doc-parser/src/PhpDocParser/BetterPhpDocParser.php
@@ -176,7 +176,7 @@ public function parseTagValue(TokenIterator $tokenIterator, string $tag): PhpDoc
         $tagValueNode = null;
 
         $currentPhpNode = $this->currentNodeProvider->getNode();
-        if ($currentPhpNode === null) {
+        if (! $currentPhpNode instanceof \PhpParser\Node) {
             throw new ShouldNotHappenException();
         }
 
@@ -297,7 +297,7 @@ private function resolveTag(TokenIterator $tokenIterator): string
     private function matchTagToPhpDocNodeFactory(string $tag): ?PhpDocNodeFactoryInterface
     {
         $currentPhpNode = $this->currentNodeProvider->getNode();
-        if ($currentPhpNode === null) {
+        if (! $currentPhpNode instanceof \PhpParser\Node) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Class_/TableTagValueNode.php b/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Class_/TableTagValueNode.php
index bd3a88d4eb37..7a6001213f20 100644
--- a/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Class_/TableTagValueNode.php
+++ b/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Class_/TableTagValueNode.php
@@ -102,7 +102,7 @@ public function getSilentKey(): string
     private function addCustomItems(array $items): array
     {
         if ($this->indexes !== []) {
-            if ($this->indexesAroundSpaces === null) {
+            if (! $this->indexesAroundSpaces instanceof AroundSpaces) {
                 throw new ShouldNotHappenException();
             }
 
@@ -115,7 +115,7 @@ private function addCustomItems(array $items): array
         }
 
         if ($this->uniqueConstraints !== []) {
-            if ($this->uniqueConstraintsAroundSpaces === null) {
+            if (! $this->uniqueConstraintsAroundSpaces instanceof AroundSpaces) {
                 throw new ShouldNotHappenException();
             }
 
diff --git a/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Property_/JoinTableTagValueNode.php b/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Property_/JoinTableTagValueNode.php
index 65092fed33d2..a6b4940fe807 100644
--- a/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Property_/JoinTableTagValueNode.php
+++ b/packages/better-php-doc-parser/src/ValueObject/PhpDocNode/Doctrine/Property_/JoinTableTagValueNode.php
@@ -155,7 +155,7 @@ private function createJoinColumnItems(string $joinColumnsKey, string $inverseJo
         $items = [];
 
         if ($this->joinColumns !== []) {
-            if ($this->joinColumnsAroundSpaces === null) {
+            if (! $this->joinColumnsAroundSpaces instanceof AroundSpaces) {
                 throw new ShouldNotHappenException();
             }
 
@@ -168,7 +168,7 @@ private function createJoinColumnItems(string $joinColumnsKey, string $inverseJo
         }
 
         if ($this->inverseJoinColumns !== []) {
-            if ($this->inverseJoinColumnsAroundSpaces === null) {
+            if (! $this->inverseJoinColumnsAroundSpaces instanceof AroundSpaces) {
                 throw new ShouldNotHappenException();
             }
 
diff --git a/packages/better-php-doc-parser/tests/PhpDocParser/AbstractPhpDocInfoTest.php b/packages/better-php-doc-parser/tests/PhpDocParser/AbstractPhpDocInfoTest.php
index a11fbc180c6b..f24b093fa322 100644
--- a/packages/better-php-doc-parser/tests/PhpDocParser/AbstractPhpDocInfoTest.php
+++ b/packages/better-php-doc-parser/tests/PhpDocParser/AbstractPhpDocInfoTest.php
@@ -5,6 +5,7 @@
 namespace Rector\BetterPhpDocParser\Tests\PhpDocParser;
 
 use Iterator;
+use PhpParser\Comment\Doc;
 use PhpParser\Node;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
 use Rector\BetterPhpDocParser\Printer\PhpDocInfoPrinter;
@@ -69,7 +70,7 @@ protected function doTestPrintedPhpDocInfo(SmartFileInfo $fileInfo, string $tagV
         $nodeWithPhpDocInfo = $this->parseFileAndGetFirstNodeOfType($fileInfo, $nodeType);
 
         $docComment = $nodeWithPhpDocInfo->getDocComment();
-        if ($docComment === null) {
+        if (! $docComment instanceof Doc) {
             throw new ShouldNotHappenException(sprintf('Doc comments for "%s" file cannot not be empty', $fileInfo));
         }
 
diff --git a/packages/changes-reporting/src/Collector/RectorChangeCollector.php b/packages/changes-reporting/src/Collector/RectorChangeCollector.php
index 44fd6ee493af..bf2cd5018d3f 100644
--- a/packages/changes-reporting/src/Collector/RectorChangeCollector.php
+++ b/packages/changes-reporting/src/Collector/RectorChangeCollector.php
@@ -45,14 +45,14 @@ function (RectorWithFileAndLineChange $rectorWithFileAndLineChange) use ($smartF
     public function notifyNodeFileInfo(Node $node): void
     {
         $fileInfo = $node->getAttribute(AttributeKey::FILE_INFO);
-        if ($fileInfo === null) {
+        if (! $fileInfo instanceof SmartFileInfo) {
             // this file was changed before and this is a sub-new node
             // array Traverse to all new nodes would have to be used, but it's not worth the performance
             return;
         }
 
         $currentRector = $this->currentRectorProvider->getCurrentRector();
-        if ($currentRector === null) {
+        if (! $currentRector instanceof RectorInterface) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/packages/family-tree/src/NodeAnalyzer/ClassChildAnalyzer.php b/packages/family-tree/src/NodeAnalyzer/ClassChildAnalyzer.php
index 199ba5220fe6..32c3d79f2e00 100644
--- a/packages/family-tree/src/NodeAnalyzer/ClassChildAnalyzer.php
+++ b/packages/family-tree/src/NodeAnalyzer/ClassChildAnalyzer.php
@@ -7,6 +7,7 @@
 use PhpParser\Node\Stmt\Class_;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use ReflectionClass;
+use ReflectionMethod;
 
 final class ClassChildAnalyzer
 {
@@ -21,7 +22,7 @@ public function hasChildClassConstructor(Class_ $class): bool
 
             $reflectionClass = new ReflectionClass($childClass);
             $constructorReflectionMethod = $reflectionClass->getConstructor();
-            if ($constructorReflectionMethod === null) {
+            if (! $constructorReflectionMethod instanceof ReflectionMethod) {
                 continue;
             }
 
@@ -48,7 +49,7 @@ public function hasParentClassConstructor(Class_ $class): bool
         foreach ($classParents as $classParent) {
             $parentReflectionClass = new ReflectionClass($classParent);
             $constructMethodReflection = $parentReflectionClass->getConstructor();
-            if ($constructMethodReflection === null) {
+            if (! $constructMethodReflection instanceof ReflectionMethod) {
                 continue;
             }
 
diff --git a/packages/family-tree/src/NodeAnalyzer/PropertyUsageAnalyzer.php b/packages/family-tree/src/NodeAnalyzer/PropertyUsageAnalyzer.php
index 0626e8aa5e97..ce90d84f3fff 100644
--- a/packages/family-tree/src/NodeAnalyzer/PropertyUsageAnalyzer.php
+++ b/packages/family-tree/src/NodeAnalyzer/PropertyUsageAnalyzer.php
@@ -64,7 +64,7 @@ public function isPropertyFetchedInChildClass(Property $property): bool
         $childrenClassNames = $this->familyRelationsAnalyzer->getChildrenOfClass($className);
         foreach ($childrenClassNames as $childClassName) {
             $childClass = $this->nodeRepository->findClass($childClassName);
-            if ($childClass === null) {
+            if (! $childClass instanceof Class_) {
                 continue;
             }
 
diff --git a/packages/node-collector/src/NodeCollector/NodeRepository.php b/packages/node-collector/src/NodeCollector/NodeRepository.php
index c9623df7fd0c..8305f58485dc 100644
--- a/packages/node-collector/src/NodeCollector/NodeRepository.php
+++ b/packages/node-collector/src/NodeCollector/NodeRepository.php
@@ -147,7 +147,7 @@ public function collect(Node $node): void
         // array callable - [$this, 'someCall']
         if ($node instanceof Array_) {
             $arrayCallable = $this->arrayCallableMethodReferenceAnalyzer->match($node);
-            if ($arrayCallable === null) {
+            if (! $arrayCallable instanceof ArrayCallable) {
                 return;
             }
 
diff --git a/packages/node-collector/src/Reflection/MethodReflectionProvider.php b/packages/node-collector/src/Reflection/MethodReflectionProvider.php
index 3a285f042af6..bd4b6dc35edb 100644
--- a/packages/node-collector/src/Reflection/MethodReflectionProvider.php
+++ b/packages/node-collector/src/Reflection/MethodReflectionProvider.php
@@ -86,7 +86,7 @@ public function provideByClassAndMethodName(string $class, string $method, Scope
     public function provideParameterTypesByStaticCall(StaticCall $staticCall): array
     {
         $methodReflection = $this->provideByStaticCall($staticCall);
-        if ($methodReflection === null) {
+        if (! $methodReflection instanceof MethodReflection) {
             return [];
         }
 
@@ -120,7 +120,7 @@ public function provideByStaticCall(StaticCall $staticCall): ?MethodReflection
     public function provideParameterTypesByClassMethod(ClassMethod $classMethod): array
     {
         $methodReflection = $this->provideByClassMethod($classMethod);
-        if ($methodReflection === null) {
+        if (! $methodReflection instanceof MethodReflection) {
             return [];
         }
 
diff --git a/packages/node-nesting-scope/src/ScopeNestingComparator.php b/packages/node-nesting-scope/src/ScopeNestingComparator.php
index 42bca99cb7ff..59d99f9f6981 100644
--- a/packages/node-nesting-scope/src/ScopeNestingComparator.php
+++ b/packages/node-nesting-scope/src/ScopeNestingComparator.php
@@ -43,7 +43,7 @@ public function isNodeConditionallyScoped(Node $node): bool
             ControlStructure::CONDITIONAL_NODE_SCOPE_TYPES + [FunctionLike::class]
         );
 
-        if ($foundParentType === null) {
+        if (! $foundParentType instanceof Node) {
             return false;
         }
 
diff --git a/packages/node-type-resolver/src/NodeTypeResolver.php b/packages/node-type-resolver/src/NodeTypeResolver.php
index 8c5f5004db1e..32f8dffd738d 100644
--- a/packages/node-type-resolver/src/NodeTypeResolver.php
+++ b/packages/node-type-resolver/src/NodeTypeResolver.php
@@ -293,7 +293,7 @@ public function isPropertyBoolean(Property $property): bool
         }
 
         $defaultNodeValue = $property->props[0]->default;
-        if ($defaultNodeValue === null) {
+        if (! $defaultNodeValue instanceof \PhpParser\Node\Expr) {
             return false;
         }
 
diff --git a/packages/node-type-resolver/src/NodeTypeResolver/ClassMethodOrClassConstTypeResolver.php b/packages/node-type-resolver/src/NodeTypeResolver/ClassMethodOrClassConstTypeResolver.php
index 7109465ec1ae..b63db658d675 100644
--- a/packages/node-type-resolver/src/NodeTypeResolver/ClassMethodOrClassConstTypeResolver.php
+++ b/packages/node-type-resolver/src/NodeTypeResolver/ClassMethodOrClassConstTypeResolver.php
@@ -7,6 +7,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Param;
 use PhpParser\Node\Stmt\ClassConst;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use PHPStan\Type\ObjectWithoutClassType;
 use PHPStan\Type\Type;
@@ -43,7 +44,7 @@ public function getNodeClasses(): array
     public function resolve(Node $node): Type
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             // anonymous class
             return new ObjectWithoutClassType();
         }
diff --git a/packages/node-type-resolver/src/NodeTypeResolver/ParamTypeResolver.php b/packages/node-type-resolver/src/NodeTypeResolver/ParamTypeResolver.php
index c4a2a62a760c..e256035e9c4b 100644
--- a/packages/node-type-resolver/src/NodeTypeResolver/ParamTypeResolver.php
+++ b/packages/node-type-resolver/src/NodeTypeResolver/ParamTypeResolver.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\FunctionLike;
 use PhpParser\Node\Identifier;
 use PhpParser\Node\Param;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\NodeTraverser;
 use PHPStan\Type\MixedType;
 use PHPStan\Type\Type;
@@ -115,7 +116,7 @@ private function resolveFromParamType(Param $param): Type
     private function resolveFromFirstVariableUse(Param $param): Type
     {
         $classMethod = $param->getAttribute(AttributeKey::METHOD_NODE);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return new MixedType();
         }
 
diff --git a/packages/node-type-resolver/src/NodeTypeResolver/PropertyFetchTypeResolver.php b/packages/node-type-resolver/src/NodeTypeResolver/PropertyFetchTypeResolver.php
index 281c22612aa1..c753200f2750 100644
--- a/packages/node-type-resolver/src/NodeTypeResolver/PropertyFetchTypeResolver.php
+++ b/packages/node-type-resolver/src/NodeTypeResolver/PropertyFetchTypeResolver.php
@@ -113,14 +113,14 @@ public function resolve(Node $node): Type
             }
         }
 
-        if ($scope === null) {
+        if (! $scope instanceof Scope) {
             $classNode = $node->getAttribute(AttributeKey::CLASS_NODE);
             // fallback to class, since property fetches are not scoped by PHPStan
             if ($classNode instanceof ClassLike) {
                 $scope = $classNode->getAttribute(AttributeKey::SCOPE);
             }
 
-            if ($scope === null) {
+            if (! $scope instanceof Scope) {
                 return new MixedType();
             }
         }
diff --git a/packages/node-type-resolver/src/NodeTypeResolver/VariableTypeResolver.php b/packages/node-type-resolver/src/NodeTypeResolver/VariableTypeResolver.php
index 949253b024c1..70a127d7e5a4 100644
--- a/packages/node-type-resolver/src/NodeTypeResolver/VariableTypeResolver.php
+++ b/packages/node-type-resolver/src/NodeTypeResolver/VariableTypeResolver.php
@@ -103,7 +103,7 @@ private function resolveTypesFromScope(Variable $variable, string $variableName)
     {
         $nodeScope = $this->resolveNodeScope($variable);
 
-        if ($nodeScope === null) {
+        if (! $nodeScope instanceof Scope) {
             return new MixedType();
         }
 
@@ -147,7 +147,7 @@ private function resolveFromParentNodes(Variable $variable): ?Scope
             }
 
             $parentNodeScope = $parentNode->getAttribute(AttributeKey::SCOPE);
-            if ($parentNodeScope === null) {
+            if (! $parentNodeScope instanceof Scope) {
                 continue;
             }
 
diff --git a/packages/node-type-resolver/src/NodeVisitor/FunctionMethodAndClassNodeVisitor.php b/packages/node-type-resolver/src/NodeVisitor/FunctionMethodAndClassNodeVisitor.php
index 7a119b634e1c..10b52ab243dd 100644
--- a/packages/node-type-resolver/src/NodeVisitor/FunctionMethodAndClassNodeVisitor.php
+++ b/packages/node-type-resolver/src/NodeVisitor/FunctionMethodAndClassNodeVisitor.php
@@ -170,7 +170,7 @@ private function processClosure(Node $node): void
     private function setClassNodeAndName(?ClassLike $classLike): void
     {
         $this->classLike = $classLike;
-        if ($classLike === null || $classLike->name === null) {
+        if (! $classLike instanceof ClassLike || $classLike->name === null) {
             $this->className = null;
         } elseif (property_exists($classLike, 'namespacedName')) {
             $this->className = $classLike->namespacedName->toString();
diff --git a/packages/node-type-resolver/src/NodeVisitor/StatementNodeVisitor.php b/packages/node-type-resolver/src/NodeVisitor/StatementNodeVisitor.php
index dd4e3e70d5b7..456347b4b4d7 100644
--- a/packages/node-type-resolver/src/NodeVisitor/StatementNodeVisitor.php
+++ b/packages/node-type-resolver/src/NodeVisitor/StatementNodeVisitor.php
@@ -30,7 +30,7 @@ public function beforeTraverse(array $nodes): ?array
     public function enterNode(Node $node): ?Node
     {
         $parent = $node->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parent === null) {
+        if (! $parent instanceof Node) {
             if (! $node instanceof Stmt) {
                 return null;
             }
diff --git a/packages/phpstan-static-type-mapper/src/TypeMapper/UnionTypeMapper.php b/packages/phpstan-static-type-mapper/src/TypeMapper/UnionTypeMapper.php
index 530612a124f3..e7adfac98765 100644
--- a/packages/phpstan-static-type-mapper/src/TypeMapper/UnionTypeMapper.php
+++ b/packages/phpstan-static-type-mapper/src/TypeMapper/UnionTypeMapper.php
@@ -27,6 +27,7 @@
 use Rector\PHPStanStaticTypeMapper\PHPStanStaticTypeMapper;
 use Rector\PHPStanStaticTypeMapper\TypeAnalyzer\BoolUnionTypeAnalyzer;
 use Rector\PHPStanStaticTypeMapper\TypeAnalyzer\UnionTypeAnalyzer;
+use Rector\PHPStanStaticTypeMapper\ValueObject\UnionTypeAnalysis;
 
 final class UnionTypeMapper implements TypeMapperInterface
 {
@@ -119,7 +120,7 @@ public function mapToPhpParserNode(Type $type, ?string $kind = null): ?Node
 
         // special case for nullable
         $nullabledType = $this->matchTypeForNullableUnionType($type);
-        if ($nullabledType === null) {
+        if (! $nullabledType instanceof Type) {
             // use first unioned type in case of unioned object types
             return $this->matchTypeForUnionedObjectTypes($type);
         }
@@ -166,7 +167,7 @@ public function mapToDocString(Type $type, ?Type $parentType = null): string
     private function shouldSkipIterable(UnionType $unionType): bool
     {
         $unionTypeAnalysis = $this->unionTypeAnalyzer->analyseForNullableAndIterable($unionType);
-        if ($unionTypeAnalysis === null) {
+        if (! $unionTypeAnalysis instanceof UnionTypeAnalysis) {
             return false;
         }
         if (! $unionTypeAnalysis->hasIterable()) {
@@ -181,7 +182,7 @@ private function shouldSkipIterable(UnionType $unionType): bool
     private function matchArrayTypes(UnionType $unionType): ?Node
     {
         $unionTypeAnalysis = $this->unionTypeAnalyzer->analyseForNullableAndIterable($unionType);
-        if ($unionTypeAnalysis === null) {
+        if (! $unionTypeAnalysis instanceof UnionTypeAnalysis) {
             return null;
         }
 
diff --git a/packages/post-rector/src/Collector/UseNodesToAddCollector.php b/packages/post-rector/src/Collector/UseNodesToAddCollector.php
index 99b86be98c89..d3ebebef2cf5 100644
--- a/packages/post-rector/src/Collector/UseNodesToAddCollector.php
+++ b/packages/post-rector/src/Collector/UseNodesToAddCollector.php
@@ -52,10 +52,10 @@ public function addUseImport(Node $positionNode, ObjectType $objectType): void
     {
         /** @var SmartFileInfo|null $fileInfo */
         $fileInfo = $positionNode->getAttribute(AttributeKey::FILE_INFO);
-        if ($fileInfo === null) {
+        if (! $fileInfo instanceof \Symplify\SmartFileSystem\SmartFileInfo) {
             // fallback for freshly created Name nodes
             $fileInfo = $this->currentFileInfoProvider->getSmartFileInfo();
-            if ($fileInfo === null) {
+            if (! $fileInfo instanceof \Symplify\SmartFileSystem\SmartFileInfo) {
                 return;
             }
         }
@@ -187,7 +187,7 @@ private function getRealPathFromNode(Node $node): ?string
         }
 
         $smartFileInfo = $this->currentFileInfoProvider->getSmartFileInfo();
-        if ($smartFileInfo === null) {
+        if (! $smartFileInfo instanceof \Symplify\SmartFileSystem\SmartFileInfo) {
             return null;
         }
 
diff --git a/packages/post-rector/src/Rector/UseAddingPostRector.php b/packages/post-rector/src/Rector/UseAddingPostRector.php
index 2f222b05a2cf..d1eef7723e5d 100644
--- a/packages/post-rector/src/Rector/UseAddingPostRector.php
+++ b/packages/post-rector/src/Rector/UseAddingPostRector.php
@@ -73,7 +73,7 @@ public function beforeTraverse(array $nodes): array
         }
 
         $smartFileInfo = $this->getSmartFileInfo($nodes);
-        if ($smartFileInfo === null) {
+        if (! $smartFileInfo instanceof SmartFileInfo) {
             return $nodes;
         }
 
diff --git a/packages/read-write/src/NodeAnalyzer/ReadWritePropertyAnalyzer.php b/packages/read-write/src/NodeAnalyzer/ReadWritePropertyAnalyzer.php
index 0ba8edfb2949..63c2fac98ebe 100644
--- a/packages/read-write/src/NodeAnalyzer/ReadWritePropertyAnalyzer.php
+++ b/packages/read-write/src/NodeAnalyzer/ReadWritePropertyAnalyzer.php
@@ -64,7 +64,7 @@ public function isRead(Node $node): bool
         Assert::isAnyOf($node, [PropertyFetch::class, StaticPropertyFetch::class]);
 
         $parent = $node->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parent === null) {
+        if (! $parent instanceof Node) {
             throw new MissingParentNodeException();
         }
 
@@ -93,7 +93,7 @@ private function unwrapPostPreIncDec(Node $node): Node
     {
         if ($node instanceof PreInc || $node instanceof PreDec || $node instanceof PostInc || $node instanceof PostDec) {
             $node = $node->getAttribute(AttributeKey::PARENT_NODE);
-            if ($node === null) {
+            if (! $node instanceof Node) {
                 throw new MissingParentNodeException();
             }
         }
@@ -104,7 +104,7 @@ private function unwrapPostPreIncDec(Node $node): Node
     private function isArrayDimFetchRead(ArrayDimFetch $arrayDimFetch): bool
     {
         $parentParent = $arrayDimFetch->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parentParent === null) {
+        if (! $parentParent instanceof Node) {
             throw new MissingParentNodeException();
         }
 
diff --git a/packages/rector-generator/src/Provider/RectorRecipeProvider.php b/packages/rector-generator/src/Provider/RectorRecipeProvider.php
index e89d2075cb51..a8c4fb2f7049 100644
--- a/packages/rector-generator/src/Provider/RectorRecipeProvider.php
+++ b/packages/rector-generator/src/Provider/RectorRecipeProvider.php
@@ -29,7 +29,7 @@ public function __construct(?RectorRecipe $rectorRecipe = null)
 
     public function provide(): RectorRecipe
     {
-        if ($this->rectorRecipe === null) {
+        if (! $this->rectorRecipe instanceof RectorRecipe) {
             throw new ConfigurationException(self::MESSAGE);
         }
 
diff --git a/packages/vendor-locker/src/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php b/packages/vendor-locker/src/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php
index c4848fb325f2..82821b4b3872 100644
--- a/packages/vendor-locker/src/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php
+++ b/packages/vendor-locker/src/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php
@@ -5,6 +5,7 @@
 namespace Rector\VendorLocker\NodeVendorLocker;
 
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Interface_;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -14,7 +15,7 @@ final class ClassMethodReturnVendorLockResolver extends AbstractNodeVendorLockRe
     public function isVendorLocked(ClassMethod $classMethod): bool
     {
         $classNode = $classMethod->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classNode === null) {
+        if (! $classNode instanceof ClassLike) {
             return false;
         }
 
diff --git a/rules/autodiscovery/src/Analyzer/ClassAnalyzer.php b/rules/autodiscovery/src/Analyzer/ClassAnalyzer.php
index fc3163dca8f6..c002c49388e7 100644
--- a/rules/autodiscovery/src/Analyzer/ClassAnalyzer.php
+++ b/rules/autodiscovery/src/Analyzer/ClassAnalyzer.php
@@ -5,6 +5,7 @@
 namespace Rector\Autodiscovery\Analyzer;
 
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PHPStan\Type\ObjectType;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
 use Rector\BetterPhpDocParser\ValueObject\PhpDocNode\JMS\SerializerTypeTagValueNode;
@@ -67,7 +68,7 @@ public function isValueObjectClass(Class_ $class): bool
 
         $constructClassMethod = $class->getMethod(MethodName::CONSTRUCT);
 
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return $this->analyseWithoutConstructor($class, $className);
         }
 
@@ -81,7 +82,7 @@ public function isValueObjectClass(Class_ $class): bool
             // awesome!
             // is it services or value object?
             $paramTypeClass = $this->parsedNodeCollector->findClass($paramType->getClassName());
-            if ($paramTypeClass === null) {
+            if (! $paramTypeClass instanceof Class_) {
                 // not sure :/
                 continue;
             }
diff --git a/rules/autodiscovery/src/Rector/FileNode/MoveEntitiesToEntityDirectoryRector.php b/rules/autodiscovery/src/Rector/FileNode/MoveEntitiesToEntityDirectoryRector.php
index c1f013b2a94d..83c78de84be5 100644
--- a/rules/autodiscovery/src/Rector/FileNode/MoveEntitiesToEntityDirectoryRector.php
+++ b/rules/autodiscovery/src/Rector/FileNode/MoveEntitiesToEntityDirectoryRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Stmt\Class_;
 use Rector\Core\PhpParser\Node\CustomNode\FileNode;
 use Rector\Core\Rector\AbstractRector;
+use Rector\FileSystemRector\ValueObject\MovedFileWithNodes;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -92,7 +93,7 @@ public function refactor(Node $node): ?Node
             $node->stmts,
             'Entity'
         );
-        if ($movedFileWithNodes === null) {
+        if (! $movedFileWithNodes instanceof MovedFileWithNodes) {
             return null;
         }
 
diff --git a/rules/autodiscovery/src/Rector/FileNode/MoveInterfacesToContractNamespaceDirectoryRector.php b/rules/autodiscovery/src/Rector/FileNode/MoveInterfacesToContractNamespaceDirectoryRector.php
index 67ab5348050c..49ade97a4f63 100644
--- a/rules/autodiscovery/src/Rector/FileNode/MoveInterfacesToContractNamespaceDirectoryRector.php
+++ b/rules/autodiscovery/src/Rector/FileNode/MoveInterfacesToContractNamespaceDirectoryRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Stmt\Interface_;
 use Rector\Core\PhpParser\Node\CustomNode\FileNode;
 use Rector\Core\Rector\AbstractRector;
+use Rector\FileSystemRector\ValueObject\MovedFileWithNodes;
 use Rector\NetteToSymfony\Analyzer\NetteControlFactoryInterfaceAnalyzer;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -85,7 +86,7 @@ public function refactor(Node $node): ?Node
             $node->stmts,
             'Contract'
         );
-        if ($movedFileWithNodes === null) {
+        if (! $movedFileWithNodes instanceof MovedFileWithNodes) {
             return null;
         }
 
diff --git a/rules/autodiscovery/src/Rector/FileNode/MoveServicesBySuffixToDirectoryRector.php b/rules/autodiscovery/src/Rector/FileNode/MoveServicesBySuffixToDirectoryRector.php
index 14fbdd1dbbd3..827686107e3a 100644
--- a/rules/autodiscovery/src/Rector/FileNode/MoveServicesBySuffixToDirectoryRector.php
+++ b/rules/autodiscovery/src/Rector/FileNode/MoveServicesBySuffixToDirectoryRector.php
@@ -10,6 +10,7 @@
 use Rector\Core\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Core\PhpParser\Node\CustomNode\FileNode;
 use Rector\Core\Rector\AbstractRector;
+use Rector\FileSystemRector\ValueObject\MovedFileWithNodes;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\ConfiguredCodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 use Symplify\SmartFileSystem\SmartFileInfo;
@@ -159,7 +160,7 @@ private function moveFileToGroupName(SmartFileInfo $fileInfo, FileNode $fileNode
             $fileNode->stmts,
             $desiredGroupName
         );
-        if ($movedFileWithNodes === null) {
+        if (! $movedFileWithNodes instanceof MovedFileWithNodes) {
             return;
         }
 
diff --git a/rules/autodiscovery/src/Rector/FileNode/MoveValueObjectsToValueObjectDirectoryRector.php b/rules/autodiscovery/src/Rector/FileNode/MoveValueObjectsToValueObjectDirectoryRector.php
index b38d1d9267e9..96b67e8f3090 100644
--- a/rules/autodiscovery/src/Rector/FileNode/MoveValueObjectsToValueObjectDirectoryRector.php
+++ b/rules/autodiscovery/src/Rector/FileNode/MoveValueObjectsToValueObjectDirectoryRector.php
@@ -11,6 +11,7 @@
 use Rector\Core\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Core\PhpParser\Node\CustomNode\FileNode;
 use Rector\Core\Rector\AbstractRector;
+use Rector\FileSystemRector\ValueObject\MovedFileWithNodes;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\ConfiguredCodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -151,7 +152,7 @@ public function refactor(Node $node): ?Node
             'ValueObject'
         );
 
-        if ($movedFileWithNodes === null) {
+        if (! $movedFileWithNodes instanceof MovedFileWithNodes) {
             return null;
         }
 
diff --git a/rules/cakephp/src/Rector/MethodCall/ArrayToFluentCallRector.php b/rules/cakephp/src/Rector/MethodCall/ArrayToFluentCallRector.php
index 57ca55a9678f..382e01170fdd 100644
--- a/rules/cakephp/src/Rector/MethodCall/ArrayToFluentCallRector.php
+++ b/rules/cakephp/src/Rector/MethodCall/ArrayToFluentCallRector.php
@@ -101,7 +101,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $factoryMethod = $this->matchTypeAndMethodName($node);
-        if ($factoryMethod === null) {
+        if (! $factoryMethod instanceof FactoryMethod) {
             return null;
         }
 
diff --git a/rules/cakephp/src/Rector/MethodCall/ModalToGetSetRector.php b/rules/cakephp/src/Rector/MethodCall/ModalToGetSetRector.php
index 41e32fe9f2b4..d740c81db3d8 100644
--- a/rules/cakephp/src/Rector/MethodCall/ModalToGetSetRector.php
+++ b/rules/cakephp/src/Rector/MethodCall/ModalToGetSetRector.php
@@ -82,7 +82,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $unprefixedMethodToGetSet = $this->matchTypeAndMethodName($node);
-        if ($unprefixedMethodToGetSet === null) {
+        if (! $unprefixedMethodToGetSet instanceof ModalToGetSet) {
             return null;
         }
 
diff --git a/rules/cakephp/src/Rector/MethodCall/RenameMethodCallBasedOnParameterRector.php b/rules/cakephp/src/Rector/MethodCall/RenameMethodCallBasedOnParameterRector.php
index f9dfe007885c..48f33ad3b74a 100644
--- a/rules/cakephp/src/Rector/MethodCall/RenameMethodCallBasedOnParameterRector.php
+++ b/rules/cakephp/src/Rector/MethodCall/RenameMethodCallBasedOnParameterRector.php
@@ -78,7 +78,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $callWithParamRename = $this->matchTypeAndMethodName($node);
-        if ($callWithParamRename === null) {
+        if (! $callWithParamRename instanceof RenameMethodCallBasedOnParameter) {
             return null;
         }
 
diff --git a/rules/cakephp/src/Rector/Property/ChangeSnakedFixtureNameToPascalRector.php b/rules/cakephp/src/Rector/Property/ChangeSnakedFixtureNameToPascalRector.php
index 76bd8b1cf5f7..0179b02d4537 100644
--- a/rules/cakephp/src/Rector/Property/ChangeSnakedFixtureNameToPascalRector.php
+++ b/rules/cakephp/src/Rector/Property/ChangeSnakedFixtureNameToPascalRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr\Array_;
 use PhpParser\Node\Expr\ArrayItem;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\Property;
 use PhpParser\Node\Stmt\PropertyProperty;
 use Rector\Core\Rector\AbstractRector;
@@ -64,7 +65,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/code-quality-strict/src/Rector/Stmt/VarInlineAnnotationToAssertRector.php b/rules/code-quality-strict/src/Rector/Stmt/VarInlineAnnotationToAssertRector.php
index 4369e6e952d5..2ef17a482b45 100644
--- a/rules/code-quality-strict/src/Rector/Stmt/VarInlineAnnotationToAssertRector.php
+++ b/rules/code-quality-strict/src/Rector/Stmt/VarInlineAnnotationToAssertRector.php
@@ -111,7 +111,7 @@ public function refactor(Node $node): ?Node
     private function getVarDocVariableName(PhpDocInfo $phpDocInfo): ?string
     {
         $attributeAwareVarTagValueNode = $phpDocInfo->getVarTagValueNode();
-        if ($attributeAwareVarTagValueNode === null) {
+        if (! $attributeAwareVarTagValueNode instanceof VarTagValueNode) {
             return null;
         }
 
@@ -153,7 +153,7 @@ private function refactorFreshlyCreatedNode(Stmt $stmt, PhpDocInfo $phpDocInfo,
         $type = $phpDocInfo->getVarType();
 
         $assertFuncCall = $this->createFuncCallBasedOnType($type, $variable);
-        if ($assertFuncCall === null) {
+        if (! $assertFuncCall instanceof FuncCall) {
             return null;
         }
 
@@ -167,7 +167,7 @@ private function refactorFreshlyCreatedNode(Stmt $stmt, PhpDocInfo $phpDocInfo,
     private function refactorAlreadyCreatedNode(Stmt $stmt, PhpDocInfo $phpDocInfo, Variable $variable): ?Node
     {
         $varTagValue = $phpDocInfo->getVarTagValueNode();
-        if ($varTagValue === null) {
+        if (! $varTagValue instanceof VarTagValueNode) {
             throw new ShouldNotHappenException();
         }
 
@@ -177,7 +177,7 @@ private function refactorAlreadyCreatedNode(Stmt $stmt, PhpDocInfo $phpDocInfo,
         );
 
         $assertFuncCall = $this->createFuncCallBasedOnType($phpStanType, $variable);
-        if ($assertFuncCall === null) {
+        if (! $assertFuncCall instanceof FuncCall) {
             return null;
         }
 
diff --git a/rules/code-quality/src/NodeAnalyzer/CallableClassMethodMatcher.php b/rules/code-quality/src/NodeAnalyzer/CallableClassMethodMatcher.php
index a857bfff98b1..e6d47b09a34a 100644
--- a/rules/code-quality/src/NodeAnalyzer/CallableClassMethodMatcher.php
+++ b/rules/code-quality/src/NodeAnalyzer/CallableClassMethodMatcher.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassMethod;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
@@ -68,13 +69,13 @@ public function match(Expr $objectExpr, String_ $string): ?ClassMethod
         if ($objectType instanceof ObjectType) {
             $class = $this->nodeRepository->findClass($objectType->getClassName());
 
-            if ($class === null) {
+            if (! $class instanceof Class_) {
                 return null;
             }
 
             $classMethod = $class->getMethod($methodName);
 
-            if ($classMethod === null) {
+            if (! $classMethod instanceof ClassMethod) {
                 return null;
             }
 
diff --git a/rules/code-quality/src/Rector/Array_/ArrayThisCallToThisMethodCallRector.php b/rules/code-quality/src/Rector/Array_/ArrayThisCallToThisMethodCallRector.php
index b38d798b040b..7dd9f8f06aa1 100644
--- a/rules/code-quality/src/Rector/Array_/ArrayThisCallToThisMethodCallRector.php
+++ b/rules/code-quality/src/Rector/Array_/ArrayThisCallToThisMethodCallRector.php
@@ -15,6 +15,7 @@
 use PhpParser\Node\Stmt\Property;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeCollector\NodeAnalyzer\ArrayCallableMethodReferenceAnalyzer;
+use Rector\NodeCollector\ValueObject\ArrayCallable;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -88,7 +89,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $arrayCallable = $this->arrayCallableMethodReferenceAnalyzer->match($node);
-        if ($arrayCallable === null) {
+        if (! $arrayCallable instanceof ArrayCallable) {
             return null;
         }
         if ($this->isAssignedToNetteMagicOnProperty($node)) {
diff --git a/rules/code-quality/src/Rector/Array_/CallableThisArrayToAnonymousFunctionRector.php b/rules/code-quality/src/Rector/Array_/CallableThisArrayToAnonymousFunctionRector.php
index f7cd210a368d..6642fbf7d0ab 100644
--- a/rules/code-quality/src/Rector/Array_/CallableThisArrayToAnonymousFunctionRector.php
+++ b/rules/code-quality/src/Rector/Array_/CallableThisArrayToAnonymousFunctionRector.php
@@ -13,6 +13,7 @@
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Param;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\CodeQuality\NodeAnalyzer\CallableClassMethodMatcher;
 use Rector\CodeQuality\NodeFactory\AnonymousFunctionFactory;
 use Rector\Core\Rector\AbstractRector;
@@ -133,7 +134,7 @@ public function refactor(Node $node): ?Node
         }
 
         $classMethod = $this->callableClassMethodMatcher->match($objectVariable, $methodName);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/Assign/SplitListAssignToSeparateLineRector.php b/rules/code-quality/src/Rector/Assign/SplitListAssignToSeparateLineRector.php
index c35070490df8..80f4555f6898 100644
--- a/rules/code-quality/src/Rector/Assign/SplitListAssignToSeparateLineRector.php
+++ b/rules/code-quality/src/Rector/Assign/SplitListAssignToSeparateLineRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\ArrayItem;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\List_;
 use Rector\Core\Rector\AbstractRector;
@@ -113,7 +114,7 @@ private function createStandaloneAssigns(Node $node, Array_ $rightArray): array
 
             $rightArrayItem = $rightArray->items[$key];
 
-            if ($rightArrayItem === null) {
+            if (! $rightArrayItem instanceof ArrayItem) {
                 continue;
             }
 
diff --git a/rules/code-quality/src/Rector/BooleanAnd/SimplifyEmptyArrayCheckRector.php b/rules/code-quality/src/Rector/BooleanAnd/SimplifyEmptyArrayCheckRector.php
index c9e2d0dd26a3..088920711d7c 100644
--- a/rules/code-quality/src/Rector/BooleanAnd/SimplifyEmptyArrayCheckRector.php
+++ b/rules/code-quality/src/Rector/BooleanAnd/SimplifyEmptyArrayCheckRector.php
@@ -11,6 +11,7 @@
 use PhpParser\Node\Expr\Empty_;
 use Rector\Core\PhpParser\Node\Manipulator\BinaryOpManipulator;
 use Rector\Core\Rector\AbstractRector;
+use Rector\Php71\ValueObject\TwoNodeMatch;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -61,7 +62,7 @@ function (Node $node): bool {
             Empty_::class
         );
 
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/Catch_/ThrowWithPreviousExceptionRector.php b/rules/code-quality/src/Rector/Catch_/ThrowWithPreviousExceptionRector.php
index 528e8d1270b4..5c0868dd005b 100644
--- a/rules/code-quality/src/Rector/Catch_/ThrowWithPreviousExceptionRector.php
+++ b/rules/code-quality/src/Rector/Catch_/ThrowWithPreviousExceptionRector.php
@@ -86,7 +86,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $caughtThrowableVariable = $node->var;
-        if ($caughtThrowableVariable === null) {
+        if (! $caughtThrowableVariable instanceof Variable) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/ClassMethod/DateTimeToDateTimeInterfaceRector.php b/rules/code-quality/src/Rector/ClassMethod/DateTimeToDateTimeInterfaceRector.php
index d10b7be0813f..081232254bb3 100644
--- a/rules/code-quality/src/Rector/ClassMethod/DateTimeToDateTimeInterfaceRector.php
+++ b/rules/code-quality/src/Rector/ClassMethod/DateTimeToDateTimeInterfaceRector.php
@@ -206,7 +206,7 @@ private function shouldSkipMethodCallRefactor(string $paramName, MethodCall $met
         }
 
         $parentNode = $methodCall->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parentNode === null) {
+        if (! $parentNode instanceof \PhpParser\Node) {
             return true;
         }
 
diff --git a/rules/code-quality/src/Rector/Foreach_/ForeachItemsAssignToEmptyArrayToAssignRector.php b/rules/code-quality/src/Rector/Foreach_/ForeachItemsAssignToEmptyArrayToAssignRector.php
index 3a5fc45dcca8..b2eacd22e29d 100644
--- a/rules/code-quality/src/Rector/Foreach_/ForeachItemsAssignToEmptyArrayToAssignRector.php
+++ b/rules/code-quality/src/Rector/Foreach_/ForeachItemsAssignToEmptyArrayToAssignRector.php
@@ -5,6 +5,7 @@
 namespace Rector\CodeQuality\Rector\Foreach_;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Stmt\Foreach_;
 use Rector\CodeQuality\NodeAnalyzer\ForeachNodeAnalyzer;
@@ -85,7 +86,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $assignVariable = $this->foreachNodeAnalyzer->matchAssignItemsOnlyForeachArrayVariable($node);
-        if ($assignVariable === null) {
+        if (! $assignVariable instanceof Expr) {
             return null;
         }
 
@@ -94,7 +95,7 @@ public function refactor(Node $node): ?Node
         }
 
         $previousDeclaration = $this->nodeUsageFinder->findPreviousForeachNodeUsage($node, $assignVariable);
-        if ($previousDeclaration === null) {
+        if (! $previousDeclaration instanceof Node) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/Foreach_/ForeachToInArrayRector.php b/rules/code-quality/src/Rector/Foreach_/ForeachToInArrayRector.php
index 58d03d9a8b50..7b66abe7f4f3 100644
--- a/rules/code-quality/src/Rector/Foreach_/ForeachToInArrayRector.php
+++ b/rules/code-quality/src/Rector/Foreach_/ForeachToInArrayRector.php
@@ -95,7 +95,7 @@ public function refactor(Node $node): ?Node
         $foreachValueVar = $node->valueVar;
 
         $twoNodeMatch = $this->matchNodes($ifCondition, $foreachValueVar);
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return null;
         }
 
@@ -148,7 +148,7 @@ private function shouldSkipForeach(Foreach_ $foreach): bool
         }
 
         $nextNode = $foreach->getAttribute(AttributeKey::NEXT_NODE);
-        if ($nextNode === null) {
+        if (! $nextNode instanceof Node) {
             return true;
         }
         if (! $nextNode instanceof Return_) {
@@ -157,7 +157,7 @@ private function shouldSkipForeach(Foreach_ $foreach): bool
 
         $returnExpression = $nextNode->expr;
 
-        if ($returnExpression === null) {
+        if (! $returnExpression instanceof Expr) {
             return true;
         }
 
diff --git a/rules/code-quality/src/Rector/FuncCall/AddPregQuoteDelimiterRector.php b/rules/code-quality/src/Rector/FuncCall/AddPregQuoteDelimiterRector.php
index 897faf69f657..7640a83c11bf 100644
--- a/rules/code-quality/src/Rector/FuncCall/AddPregQuoteDelimiterRector.php
+++ b/rules/code-quality/src/Rector/FuncCall/AddPregQuoteDelimiterRector.php
@@ -76,7 +76,7 @@ public function refactor(Node $node): ?Node
     private function determineDelimiter(FuncCall $funcCall): ?string
     {
         $concat = $this->getUppermostConcat($funcCall);
-        if ($concat === null) {
+        if (! $concat instanceof Concat) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/Identical/GetClassToInstanceOfRector.php b/rules/code-quality/src/Rector/Identical/GetClassToInstanceOfRector.php
index 68ebcee1adb5..e3f063522336 100644
--- a/rules/code-quality/src/Rector/Identical/GetClassToInstanceOfRector.php
+++ b/rules/code-quality/src/Rector/Identical/GetClassToInstanceOfRector.php
@@ -16,6 +16,7 @@
 use PhpParser\Node\Scalar\String_;
 use Rector\Core\PhpParser\Node\Manipulator\BinaryOpManipulator;
 use Rector\Core\Rector\AbstractRector;
+use Rector\Php71\ValueObject\TwoNodeMatch;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -75,7 +76,7 @@ function (Node $node): bool {
             }
         );
 
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/Identical/SimplifyArraySearchRector.php b/rules/code-quality/src/Rector/Identical/SimplifyArraySearchRector.php
index 78a22ffe840e..0e5f1cd99bea 100644
--- a/rules/code-quality/src/Rector/Identical/SimplifyArraySearchRector.php
+++ b/rules/code-quality/src/Rector/Identical/SimplifyArraySearchRector.php
@@ -11,6 +11,7 @@
 use PhpParser\Node\Expr\FuncCall;
 use Rector\Core\PhpParser\Node\Manipulator\BinaryOpManipulator;
 use Rector\Core\Rector\AbstractRector;
+use Rector\Php71\ValueObject\TwoNodeMatch;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -66,7 +67,7 @@ function (Node $node): bool {
             }
         );
 
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/Identical/SimplifyConditionsRector.php b/rules/code-quality/src/Rector/Identical/SimplifyConditionsRector.php
index 2cd296c3072c..841bfe09e36d 100644
--- a/rules/code-quality/src/Rector/Identical/SimplifyConditionsRector.php
+++ b/rules/code-quality/src/Rector/Identical/SimplifyConditionsRector.php
@@ -13,6 +13,7 @@
 use Rector\Core\PhpParser\Node\AssignAndBinaryMap;
 use Rector\Core\PhpParser\Node\Manipulator\BinaryOpManipulator;
 use Rector\Core\Rector\AbstractRector;
+use Rector\Php71\ValueObject\TwoNodeMatch;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -90,7 +91,7 @@ function (Node $binaryOp): bool {
             }
         );
 
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return $twoNodeMatch;
         }
 
diff --git a/rules/code-quality/src/Rector/If_/ExplicitBoolCompareRector.php b/rules/code-quality/src/Rector/If_/ExplicitBoolCompareRector.php
index 6786e9db9f05..a7f961e80151 100644
--- a/rules/code-quality/src/Rector/If_/ExplicitBoolCompareRector.php
+++ b/rules/code-quality/src/Rector/If_/ExplicitBoolCompareRector.php
@@ -102,7 +102,7 @@ public function refactor(Node $node): ?Node
         }
 
         $newConditionNode = $this->resolveNewConditionNode($conditionNode, $isNegated);
-        if ($newConditionNode === null) {
+        if (! $newConditionNode instanceof BinaryOp) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/If_/ShortenElseIfRector.php b/rules/code-quality/src/Rector/If_/ShortenElseIfRector.php
index 85929f5dcef5..f1327bb293ee 100644
--- a/rules/code-quality/src/Rector/If_/ShortenElseIfRector.php
+++ b/rules/code-quality/src/Rector/If_/ShortenElseIfRector.php
@@ -5,6 +5,7 @@
 namespace Rector\CodeQuality\Rector\If_;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\Else_;
 use PhpParser\Node\Stmt\ElseIf_;
 use PhpParser\Node\Stmt\If_;
 use Rector\Core\Rector\AbstractRector;
@@ -71,7 +72,7 @@ public function refactor(Node $node): ?Node
 
     private function shortenElseIf(If_ $node): ?If_
     {
-        if ($node->else === null) {
+        if (! $node->else instanceof Else_) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/If_/SimplifyIfElseToTernaryRector.php b/rules/code-quality/src/Rector/If_/SimplifyIfElseToTernaryRector.php
index 1c7d00a2cb6e..ffc18cedc329 100644
--- a/rules/code-quality/src/Rector/If_/SimplifyIfElseToTernaryRector.php
+++ b/rules/code-quality/src/Rector/If_/SimplifyIfElseToTernaryRector.php
@@ -82,10 +82,10 @@ public function refactor(Node $node): ?Node
 
         $ifAssignVar = $this->resolveOnlyStmtAssignVar($node->stmts);
         $elseAssignVar = $this->resolveOnlyStmtAssignVar($node->else->stmts);
-        if ($ifAssignVar === null) {
+        if (! $ifAssignVar instanceof Expr) {
             return null;
         }
-        if ($elseAssignVar === null) {
+        if (! $elseAssignVar instanceof Expr) {
             return null;
         }
 
@@ -95,10 +95,10 @@ public function refactor(Node $node): ?Node
 
         $ternaryIf = $this->resolveOnlyStmtAssignExpr($node->stmts);
         $ternaryElse = $this->resolveOnlyStmtAssignExpr($node->else->stmts);
-        if ($ternaryIf === null) {
+        if (! $ternaryIf instanceof Expr) {
             return null;
         }
-        if ($ternaryElse === null) {
+        if (! $ternaryElse instanceof Expr) {
             return null;
         }
 
diff --git a/rules/code-quality/src/Rector/Return_/SimplifyUselessVariableRector.php b/rules/code-quality/src/Rector/Return_/SimplifyUselessVariableRector.php
index 068505882b72..47fdea81432c 100644
--- a/rules/code-quality/src/Rector/Return_/SimplifyUselessVariableRector.php
+++ b/rules/code-quality/src/Rector/Return_/SimplifyUselessVariableRector.php
@@ -115,7 +115,7 @@ private function shouldSkip(Return_ $return): bool
         $variableNode = $return->expr;
 
         $previousExpression = $return->getAttribute(AttributeKey::PREVIOUS_NODE);
-        if ($previousExpression === null) {
+        if (! $previousExpression instanceof Node) {
             return true;
         }
         if (! $previousExpression instanceof Expression) {
diff --git a/rules/code-quality/src/Rector/Ternary/SimplifyTautologyTernaryRector.php b/rules/code-quality/src/Rector/Ternary/SimplifyTautologyTernaryRector.php
index b5b6ed25ac2b..e0bd8860bd32 100644
--- a/rules/code-quality/src/Rector/Ternary/SimplifyTautologyTernaryRector.php
+++ b/rules/code-quality/src/Rector/Ternary/SimplifyTautologyTernaryRector.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Expr\Ternary;
 use Rector\Core\PhpParser\Node\Manipulator\BinaryOpManipulator;
 use Rector\Core\Rector\AbstractRector;
+use Rector\Php71\ValueObject\TwoNodeMatch;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -65,7 +66,7 @@ function (Node $leftNode) use ($node): bool {
             }
         );
 
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return null;
         }
 
diff --git a/rules/coding-style/src/Node/DocAliasResolver.php b/rules/coding-style/src/Node/DocAliasResolver.php
index 3c44af3fa73b..6a7ba10de181 100644
--- a/rules/coding-style/src/Node/DocAliasResolver.php
+++ b/rules/coding-style/src/Node/DocAliasResolver.php
@@ -5,6 +5,7 @@
 namespace Rector\CodingStyle\Node;
 
 use Nette\Utils\Strings;
+use PhpParser\Comment\Doc;
 use PhpParser\Node;
 use PHPStan\Type\Type;
 use PHPStan\Type\UnionType;
@@ -50,7 +51,7 @@ public function resolve(Node $node): array
             &$possibleDocAliases
         ): void {
             $docComment = $node->getDocComment();
-            if ($docComment === null) {
+            if (! $docComment instanceof Doc) {
                 return;
             }
 
diff --git a/rules/coding-style/src/Node/UseManipulator.php b/rules/coding-style/src/Node/UseManipulator.php
index 672cca54d965..384e42432701 100644
--- a/rules/coding-style/src/Node/UseManipulator.php
+++ b/rules/coding-style/src/Node/UseManipulator.php
@@ -65,7 +65,7 @@ private function resolveUsedNames(Node $node): void
             }
 
             $parentNode = $nameNode->getAttribute(AttributeKey::PARENT_NODE);
-            if ($parentNode === null) {
+            if (! $parentNode instanceof Node) {
                 throw new ShouldNotHappenException();
             }
 
@@ -80,7 +80,7 @@ private function resolveUsedClassNames(Node $searchNode): void
 
         foreach ($classLikes as $classLike) {
             $classLikeName = $classLike->name;
-            if ($classLikeName === null) {
+            if (! $classLikeName instanceof Identifier) {
                 continue;
             }
 
diff --git a/rules/coding-style/src/Rector/Assign/ManualJsonStringToJsonEncodeArrayRector.php b/rules/coding-style/src/Rector/Assign/ManualJsonStringToJsonEncodeArrayRector.php
index bf505ba47755..56fe71a141b0 100644
--- a/rules/coding-style/src/Rector/Assign/ManualJsonStringToJsonEncodeArrayRector.php
+++ b/rules/coding-style/src/Rector/Assign/ManualJsonStringToJsonEncodeArrayRector.php
@@ -231,7 +231,7 @@ private function collectContentAndPlaceholderNodesFromNextExpressions(Assign $as
 
             // jump to next one
             $currentNode = $this->getNextExpression($currentNode);
-            if ($currentNode === null) {
+            if (! $currentNode instanceof Node) {
                 return $concatExpressionJoinData;
             }
         }
diff --git a/rules/coding-style/src/Rector/ClassMethod/MakeInheritedMethodVisibilitySameAsParentRector.php b/rules/coding-style/src/Rector/ClassMethod/MakeInheritedMethodVisibilitySameAsParentRector.php
index 2596d760a942..ae3b43369245 100644
--- a/rules/coding-style/src/Rector/ClassMethod/MakeInheritedMethodVisibilitySameAsParentRector.php
+++ b/rules/coding-style/src/Rector/ClassMethod/MakeInheritedMethodVisibilitySameAsParentRector.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Return_;
 use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\MethodName;
 use Rector\Core\ValueObject\PhpVersionFeature;
@@ -84,7 +85,7 @@ public function refactor(Node $node): ?Node
         }
 
         $classReflection = $scope->getClassReflection();
-        if ($classReflection === null) {
+        if (! $classReflection instanceof ClassReflection) {
             return null;
         }
 
diff --git a/rules/coding-style/src/Rector/ClassMethod/ReturnArrayClassMethodToYieldRector.php b/rules/coding-style/src/Rector/ClassMethod/ReturnArrayClassMethodToYieldRector.php
index 4c07ead90662..2d07b103dab8 100644
--- a/rules/coding-style/src/Rector/ClassMethod/ReturnArrayClassMethodToYieldRector.php
+++ b/rules/coding-style/src/Rector/ClassMethod/ReturnArrayClassMethodToYieldRector.php
@@ -121,7 +121,7 @@ public function refactor(Node $node): ?Node
             }
 
             $arrayNode = $this->collectReturnArrayNodesFromClassMethod($node);
-            if ($arrayNode === null) {
+            if (! $arrayNode instanceof Array_) {
                 continue;
             }
 
@@ -173,7 +173,7 @@ private function transformArrayToYieldsOnMethodNode(ClassMethod $classMethod, Ar
 
         // remove whole return node
         $parentNode = $array->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parentNode === null) {
+        if (! $parentNode instanceof Node) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/rules/coding-style/src/Rector/ClassMethod/UnSpreadOperatorRector.php b/rules/coding-style/src/Rector/ClassMethod/UnSpreadOperatorRector.php
index 8e3694bbc0b3..05d826a84375 100644
--- a/rules/coding-style/src/Rector/ClassMethod/UnSpreadOperatorRector.php
+++ b/rules/coding-style/src/Rector/ClassMethod/UnSpreadOperatorRector.php
@@ -102,7 +102,7 @@ private function processUnspreadOperatorClassMethodParams(ClassMethod $classMeth
     private function processUnspreadOperatorMethodCallArgs(MethodCall $methodCall): ?MethodCall
     {
         $classMethod = $this->nodeRepository->findClassMethodByMethodCall($methodCall);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/coding-style/src/Rector/Encapsed/WrapEncapsedVariableInCurlyBracesRector.php b/rules/coding-style/src/Rector/Encapsed/WrapEncapsedVariableInCurlyBracesRector.php
index 73de9eb82b1a..6aeb6b124204 100644
--- a/rules/coding-style/src/Rector/Encapsed/WrapEncapsedVariableInCurlyBracesRector.php
+++ b/rules/coding-style/src/Rector/Encapsed/WrapEncapsedVariableInCurlyBracesRector.php
@@ -57,7 +57,7 @@ public function refactor(Node $node): ?Node
         foreach ($node->parts as $index => $nodePart) {
             if ($nodePart instanceof Variable) {
                 $previousNode = $nodePart->getAttribute(AttributeKey::PREVIOUS_NODE);
-                $previousNodeEndTokenPosition = $previousNode === null ? $startTokenPos : $previousNode->getEndTokenPos();
+                $previousNodeEndTokenPosition = $previousNode instanceof Node ? $previousNode->getEndTokenPos() : $startTokenPos;
 
                 if ($previousNodeEndTokenPosition + 1 === $nodePart->getStartTokenPos()) {
                     $hasVariableBeenWrapped = true;
diff --git a/rules/coding-style/src/Rector/Throw_/AnnotateThrowablesRector.php b/rules/coding-style/src/Rector/Throw_/AnnotateThrowablesRector.php
index a30d4e792da2..0d2ae3d42d24 100644
--- a/rules/coding-style/src/Rector/Throw_/AnnotateThrowablesRector.php
+++ b/rules/coding-style/src/Rector/Throw_/AnnotateThrowablesRector.php
@@ -166,7 +166,7 @@ private function hasThrowablesToAnnotate(Node $node): bool
     private function annotateThrowables(Node $node): void
     {
         $callee = $this->identifyCaller($node);
-        if ($callee === null) {
+        if (! $callee instanceof Node) {
             return;
         }
 
@@ -225,7 +225,7 @@ private function identifyCaller(Node $node): ?Node
     private function extractAlreadyAnnotatedThrowables(Node $node): array
     {
         $callee = $this->identifyCaller($node);
-        if ($callee === null) {
+        if (! $callee instanceof Node) {
             return [];
         }
 
diff --git a/rules/coding-style/src/Rector/Use_/RemoveUnusedAliasRector.php b/rules/coding-style/src/Rector/Use_/RemoveUnusedAliasRector.php
index 85525c278dca..84b3fe06fd4b 100644
--- a/rules/coding-style/src/Rector/Use_/RemoveUnusedAliasRector.php
+++ b/rules/coding-style/src/Rector/Use_/RemoveUnusedAliasRector.php
@@ -115,7 +115,7 @@ public function refactor(Node $node): ?Node
         }
 
         $searchNode = $this->resolveSearchNode($node);
-        if ($searchNode === null) {
+        if (! $searchNode instanceof Node) {
             return null;
         }
 
diff --git a/rules/dead-code/src/Doctrine/DoctrineEntityManipulator.php b/rules/dead-code/src/Doctrine/DoctrineEntityManipulator.php
index 8497bb14c596..dd5902be1080 100644
--- a/rules/dead-code/src/Doctrine/DoctrineEntityManipulator.php
+++ b/rules/dead-code/src/Doctrine/DoctrineEntityManipulator.php
@@ -59,7 +59,7 @@ public function resolveOtherProperty(Property $property): ?string
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($property);
 
         $relationTagValueNode = $phpDocInfo->getByType(DoctrineRelationTagValueNodeInterface::class);
-        if ($relationTagValueNode === null) {
+        if (! $relationTagValueNode instanceof DoctrineRelationTagValueNodeInterface) {
             return null;
         }
 
diff --git a/rules/dead-code/src/NodeCollector/UnusedParameterResolver.php b/rules/dead-code/src/NodeCollector/UnusedParameterResolver.php
index f9f8609d4bda..a039e43502f5 100644
--- a/rules/dead-code/src/NodeCollector/UnusedParameterResolver.php
+++ b/rules/dead-code/src/NodeCollector/UnusedParameterResolver.php
@@ -52,7 +52,7 @@ public function resolve(ClassMethod $classMethod, string $methodName, array $chi
 
         foreach ($childrenOfClass as $childClassNode) {
             $methodOfChild = $childClassNode->getMethod($methodName);
-            if ($methodOfChild === null) {
+            if (! $methodOfChild instanceof ClassMethod) {
                 continue;
             }
 
diff --git a/rules/dead-code/src/Rector/Assign/RemoveUnusedAssignVariableRector.php b/rules/dead-code/src/Rector/Assign/RemoveUnusedAssignVariableRector.php
index 37abc6c7d0d6..270818fbf6b9 100644
--- a/rules/dead-code/src/Rector/Assign/RemoveUnusedAssignVariableRector.php
+++ b/rules/dead-code/src/Rector/Assign/RemoveUnusedAssignVariableRector.php
@@ -161,7 +161,7 @@ private function isPreviousVariablePartOfOverridingAssign(Assign $assign): bool
     {
         // is previous variable node as part of assign?
         $previousVariableAssign = $this->previousVariableAssignNodeFinder->find($assign);
-        if ($previousVariableAssign === null) {
+        if (! $previousVariableAssign instanceof Node) {
             return false;
         }
 
diff --git a/rules/dead-code/src/Rector/ClassMethod/RemoveDelegatingParentCallRector.php b/rules/dead-code/src/Rector/ClassMethod/RemoveDelegatingParentCallRector.php
index 6b59db3f1936..36659ee77dc0 100644
--- a/rules/dead-code/src/Rector/ClassMethod/RemoveDelegatingParentCallRector.php
+++ b/rules/dead-code/src/Rector/ClassMethod/RemoveDelegatingParentCallRector.php
@@ -92,7 +92,7 @@ public function refactor(Node $node): ?Node
         }
 
         $staticCall = $this->matchStaticCall($onlyStmt);
-        if ($staticCall === null) {
+        if (! $staticCall instanceof StaticCall) {
             return null;
         }
 
diff --git a/rules/dead-code/src/Rector/ClassMethod/RemoveUnusedParameterRector.php b/rules/dead-code/src/Rector/ClassMethod/RemoveUnusedParameterRector.php
index 75a598af30cd..54797f09b5b0 100644
--- a/rules/dead-code/src/Rector/ClassMethod/RemoveUnusedParameterRector.php
+++ b/rules/dead-code/src/Rector/ClassMethod/RemoveUnusedParameterRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Param;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassMethod;
+use PHPStan\PhpDocParser\Ast\PhpDoc\ParamTagValueNode;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\Caching\Contract\Rector\ZeroCacheRectorInterface;
 use Rector\Core\PhpParser\Node\Manipulator\ClassManipulator;
@@ -132,7 +133,7 @@ public function refactor(Node $node): ?Node
 
         foreach ($childrenOfClass as $childClassNode) {
             $methodOfChild = $childClassNode->getMethod($methodName);
-            if ($methodOfChild === null) {
+            if (! $methodOfChild instanceof \PhpParser\Node\Stmt\ClassMethod) {
                 continue;
             }
 
@@ -196,7 +197,7 @@ private function clearPhpDocInfo(ClassMethod $classMethod, array $unusedParamete
             }
 
             $paramTagValueNode = $phpDocInfo->getParamTagValueByName($parameterName);
-            if ($paramTagValueNode === null) {
+            if (! $paramTagValueNode instanceof ParamTagValueNode) {
                 continue;
             }
 
diff --git a/rules/dead-code/src/Rector/Class_/RemoveUnusedDoctrineEntityMethodAndPropertyRector.php b/rules/dead-code/src/Rector/Class_/RemoveUnusedDoctrineEntityMethodAndPropertyRector.php
index 6e411921f67a..49313050b1cc 100644
--- a/rules/dead-code/src/Rector/Class_/RemoveUnusedDoctrineEntityMethodAndPropertyRector.php
+++ b/rules/dead-code/src/Rector/Class_/RemoveUnusedDoctrineEntityMethodAndPropertyRector.php
@@ -231,7 +231,7 @@ private function resolveClassUsedPropertyFetchNames(Class_ $class): array
     private function removeInversedByOrMappedByOnRelatedProperty(Property $property): void
     {
         $otherRelationProperty = $this->getOtherRelationProperty($property);
-        if ($otherRelationProperty === null) {
+        if (! $otherRelationProperty instanceof Property) {
             return;
         }
 
diff --git a/rules/dead-code/src/Rector/If_/SimplifyIfElseWithSameContentRector.php b/rules/dead-code/src/Rector/If_/SimplifyIfElseWithSameContentRector.php
index e6ace2ab719c..b71ab9de17ac 100644
--- a/rules/dead-code/src/Rector/If_/SimplifyIfElseWithSameContentRector.php
+++ b/rules/dead-code/src/Rector/If_/SimplifyIfElseWithSameContentRector.php
@@ -5,6 +5,7 @@
 namespace Rector\DeadCode\Rector\If_;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\Else_;
 use PhpParser\Node\Stmt\If_;
 use Rector\Core\Exception\ShouldNotHappenException;
 use Rector\Core\Rector\AbstractRector;
@@ -87,7 +88,7 @@ private function isIfWithConstantReturns(If_ $if): bool
         }
 
         $else = $if->else;
-        if ($else === null) {
+        if (! $else instanceof Else_) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/rules/dead-code/src/Rector/MethodCall/RemoveEmptyMethodCallRector.php b/rules/dead-code/src/Rector/MethodCall/RemoveEmptyMethodCallRector.php
index c928b9dc1f82..adb717155c77 100644
--- a/rules/dead-code/src/Rector/MethodCall/RemoveEmptyMethodCallRector.php
+++ b/rules/dead-code/src/Rector/MethodCall/RemoveEmptyMethodCallRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\If_;
 use PHPStan\Analyser\Scope;
 use PHPStan\Type\ObjectType;
@@ -91,7 +92,7 @@ public function refactor(Node $node): ?Node
         }
 
         $class = $this->classReflectionToAstResolver->getClassFromObjectType($type);
-        if ($class === null) {
+        if (! $class instanceof Class_) {
             return null;
         }
 
@@ -122,7 +123,7 @@ private function shouldSkipClassMethod(Class_ $class, MethodCall $methodCall): b
         }
 
         $classMethod = $class->getMethod($methodName);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return true;
         }
 
diff --git a/rules/dead-code/src/Rector/Plus/RemoveDeadZeroAndOneOperationRector.php b/rules/dead-code/src/Rector/Plus/RemoveDeadZeroAndOneOperationRector.php
index e72164eef8ee..ad5787c73eed 100644
--- a/rules/dead-code/src/Rector/Plus/RemoveDeadZeroAndOneOperationRector.php
+++ b/rules/dead-code/src/Rector/Plus/RemoveDeadZeroAndOneOperationRector.php
@@ -104,7 +104,7 @@ public function refactor(Node $node): ?Node
             }
 
             // nothing more to change, return last node
-            if ($changedNode === null) {
+            if (! $changedNode instanceof Node) {
                 return $previousNode;
             }
         }
diff --git a/rules/dead-code/src/Rector/PropertyProperty/RemoveNullPropertyInitializationRector.php b/rules/dead-code/src/Rector/PropertyProperty/RemoveNullPropertyInitializationRector.php
index b8b0fe07abd8..2ac147ac1886 100644
--- a/rules/dead-code/src/Rector/PropertyProperty/RemoveNullPropertyInitializationRector.php
+++ b/rules/dead-code/src/Rector/PropertyProperty/RemoveNullPropertyInitializationRector.php
@@ -5,6 +5,7 @@
 namespace Rector\DeadCode\Rector\PropertyProperty;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ConstFetch;
 use PhpParser\Node\NullableType;
 use PhpParser\Node\Stmt\PropertyProperty;
@@ -57,7 +58,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $defaultValueNode = $node->default;
-        if ($defaultValueNode === null) {
+        if (! $defaultValueNode instanceof Expr) {
             return null;
         }
 
diff --git a/rules/dead-code/src/Rector/StaticCall/RemoveParentCallWithoutParentRector.php b/rules/dead-code/src/Rector/StaticCall/RemoveParentCallWithoutParentRector.php
index dbe5939da0f5..7407423c68e2 100644
--- a/rules/dead-code/src/Rector/StaticCall/RemoveParentCallWithoutParentRector.php
+++ b/rules/dead-code/src/Rector/StaticCall/RemoveParentCallWithoutParentRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr\StaticCall;
 use PhpParser\Node\Name;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\PhpParser\Node\Manipulator\ClassMethodManipulator;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -91,7 +92,7 @@ public function refactor(Node $node): ?Node
         }
 
         $classMethod = $node->getAttribute(AttributeKey::METHOD_NODE);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/dead-code/src/ValueObject/VariableNodeUse.php b/rules/dead-code/src/ValueObject/VariableNodeUse.php
index f77e73bf94fc..4aaa01fb5aaf 100644
--- a/rules/dead-code/src/ValueObject/VariableNodeUse.php
+++ b/rules/dead-code/src/ValueObject/VariableNodeUse.php
@@ -83,7 +83,7 @@ public function getVariableNode(): Node
     public function getParentNode(): Node
     {
         $parentNode = $this->variable->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parentNode === null) {
+        if (! $parentNode instanceof Node) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/rules/dead-doc-block/src/DeadParamTagValueNodeAnalyzer.php b/rules/dead-doc-block/src/DeadParamTagValueNodeAnalyzer.php
index 0e9233ef800c..8dd4888f5371 100644
--- a/rules/dead-doc-block/src/DeadParamTagValueNodeAnalyzer.php
+++ b/rules/dead-doc-block/src/DeadParamTagValueNodeAnalyzer.php
@@ -31,7 +31,7 @@ public function __construct(NodeNameResolver $nodeNameResolver, TypeComparator $
     public function isDead(ParamTagValueNode $paramTagValueNode, FunctionLike $functionLike): bool
     {
         $param = $this->matchParamByName($paramTagValueNode->parameterName, $functionLike);
-        if ($param === null) {
+        if (! $param instanceof Param) {
             return false;
         }
 
diff --git a/rules/dead-doc-block/src/Rector/ClassMethod/RemoveUselessReturnTagRector.php b/rules/dead-doc-block/src/Rector/ClassMethod/RemoveUselessReturnTagRector.php
index df45e4272559..58fea61efb0f 100644
--- a/rules/dead-doc-block/src/Rector/ClassMethod/RemoveUselessReturnTagRector.php
+++ b/rules/dead-doc-block/src/Rector/ClassMethod/RemoveUselessReturnTagRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Stmt\ClassMethod;
+use Rector\AttributeAwarePhpDoc\Ast\PhpDoc\AttributeAwareReturnTagValueNode;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\Core\Rector\AbstractRector;
 use Rector\DeadDocBlock\DeadReturnTagValueNodeAnalyzer;
@@ -86,7 +87,7 @@ public function refactor(Node $node): ?Node
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
 
         $attributeAwareReturnTagValueNode = $phpDocInfo->getReturnTagValue();
-        if ($attributeAwareReturnTagValueNode === null) {
+        if (! $attributeAwareReturnTagValueNode instanceof AttributeAwareReturnTagValueNode) {
             return null;
         }
 
diff --git a/rules/dead-doc-block/src/Rector/Node/RemoveNonExistingVarAnnotationRector.php b/rules/dead-doc-block/src/Rector/Node/RemoveNonExistingVarAnnotationRector.php
index 2607c1264e47..06c47d3b0b25 100644
--- a/rules/dead-doc-block/src/Rector/Node/RemoveNonExistingVarAnnotationRector.php
+++ b/rules/dead-doc-block/src/Rector/Node/RemoveNonExistingVarAnnotationRector.php
@@ -107,7 +107,7 @@ public function refactor(Node $node): ?Node
 
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
         $varTagValueNode = $phpDocInfo->getVarTagValueNode();
-        if ($varTagValueNode === null) {
+        if (! $varTagValueNode instanceof VarTagValueNode) {
             return null;
         }
 
diff --git a/rules/dead-doc-block/src/TagRemover/ParamTagRemover.php b/rules/dead-doc-block/src/TagRemover/ParamTagRemover.php
index fde6225839e9..53155c260d60 100644
--- a/rules/dead-doc-block/src/TagRemover/ParamTagRemover.php
+++ b/rules/dead-doc-block/src/TagRemover/ParamTagRemover.php
@@ -5,6 +5,7 @@
 namespace Rector\DeadDocBlock\TagRemover;
 
 use PhpParser\Node\FunctionLike;
+use PHPStan\PhpDocParser\Ast\PhpDoc\ParamTagValueNode;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfo;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\DeadDocBlock\DeadParamTagValueNodeAnalyzer;
@@ -37,7 +38,7 @@ public function removeParamTagsIfUseless(PhpDocInfo $phpDocInfo, FunctionLike $f
             // remove existing type
 
             $paramTagValueNode = $phpDocInfo->getParamTagValueByName($paramName);
-            if ($paramTagValueNode === null) {
+            if (! $paramTagValueNode instanceof ParamTagValueNode) {
                 continue;
             }
 
diff --git a/rules/dead-doc-block/src/TagRemover/ReturnTagRemover.php b/rules/dead-doc-block/src/TagRemover/ReturnTagRemover.php
index f657851fcef9..0b3853258e50 100644
--- a/rules/dead-doc-block/src/TagRemover/ReturnTagRemover.php
+++ b/rules/dead-doc-block/src/TagRemover/ReturnTagRemover.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node\FunctionLike;
 use PHPStan\Type\Type;
+use Rector\AttributeAwarePhpDoc\Ast\PhpDoc\AttributeAwareReturnTagValueNode;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfo;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\DeadDocBlock\DeadReturnTagValueNodeAnalyzer;
@@ -34,7 +35,7 @@ public function removeReturnTagIfUseless(PhpDocInfo $phpDocInfo, FunctionLike $f
     {
         // remove existing type
         $attributeAwareReturnTagValueNode = $phpDocInfo->getReturnTagValue();
-        if ($attributeAwareReturnTagValueNode === null) {
+        if (! $attributeAwareReturnTagValueNode instanceof AttributeAwareReturnTagValueNode) {
             return;
         }
 
diff --git a/rules/defluent/src/ConflictGuard/ParentClassMethodTypeOverrideGuard.php b/rules/defluent/src/ConflictGuard/ParentClassMethodTypeOverrideGuard.php
index 12582dbe93b7..96348429ce9e 100644
--- a/rules/defluent/src/ConflictGuard/ParentClassMethodTypeOverrideGuard.php
+++ b/rules/defluent/src/ConflictGuard/ParentClassMethodTypeOverrideGuard.php
@@ -45,7 +45,7 @@ public function isReturnTypeChangeAllowed(ClassMethod $classMethod): bool
         $parentClassMethodReflection = $this->getParentClassMethod($classMethod);
 
         // nothign to check
-        if ($parentClassMethodReflection === null) {
+        if (! $parentClassMethodReflection instanceof MethodReflection) {
             return true;
         }
 
diff --git a/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallNodeAnalyzer.php b/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallNodeAnalyzer.php
index 3cd39766c501..dacfa699fa38 100644
--- a/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallNodeAnalyzer.php
+++ b/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallNodeAnalyzer.php
@@ -97,7 +97,7 @@ public function isLastChainMethodCall(MethodCall $methodCall): bool
         $nextNode = $methodCall->getAttribute(AttributeKey::NEXT_NODE);
 
         // is last chain call
-        return $nextNode === null;
+        return ! $nextNode instanceof Node;
     }
 
     /**
diff --git a/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallRootExtractor.php b/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallRootExtractor.php
index 5106327f7c39..e22d0b41d8f4 100644
--- a/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallRootExtractor.php
+++ b/rules/defluent/src/NodeAnalyzer/FluentChainMethodCallRootExtractor.php
@@ -17,6 +17,7 @@
 use Rector\Defluent\ValueObject\AssignAndRootExpr;
 use Rector\Defluent\ValueObject\FluentCallsKind;
 use Rector\Naming\Naming\PropertyNaming;
+use Rector\Naming\ValueObject\ExpectedName;
 use Rector\NetteKdyby\Naming\VariableNaming;
 use Rector\NodeNameResolver\NodeNameResolver;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -181,7 +182,7 @@ private function matchMethodCallOnNew(MethodCall $methodCall): ?AssignAndRootExp
 
             $fullyQualifiedObjectType = new FullyQualifiedObjectType($className);
             $expectedName = $this->propertyNaming->getExpectedNameFromType($fullyQualifiedObjectType);
-            if ($expectedName === null) {
+            if (! $expectedName instanceof ExpectedName) {
                 return null;
             }
 
diff --git a/rules/defluent/src/Rector/AbstractFluentChainMethodCallRector.php b/rules/defluent/src/Rector/AbstractFluentChainMethodCallRector.php
index 481ace2c1d5d..46afdef5634e 100644
--- a/rules/defluent/src/Rector/AbstractFluentChainMethodCallRector.php
+++ b/rules/defluent/src/Rector/AbstractFluentChainMethodCallRector.php
@@ -16,6 +16,7 @@
 use Rector\Defluent\NodeAnalyzer\SameClassMethodCallAnalyzer;
 use Rector\Defluent\NodeFactory\NonFluentChainMethodCallFactory;
 use Rector\Defluent\Skipper\FluentMethodCallSkipper;
+use Rector\Defluent\ValueObject\AssignAndRootExpr;
 use Rector\Defluent\ValueObject\AssignAndRootExprAndNodesToAdd;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 
@@ -77,7 +78,7 @@ protected function createStandaloneNodesToAddFromChainMethodCalls(
             $kind
         );
 
-        if ($assignAndRootExpr === null) {
+        if (! $assignAndRootExpr instanceof AssignAndRootExpr) {
             return null;
         }
 
diff --git a/rules/defluent/src/Rector/ClassMethod/ReturnThisRemoveRector.php b/rules/defluent/src/Rector/ClassMethod/ReturnThisRemoveRector.php
index 0000d2e93d1f..56725311c6b6 100644
--- a/rules/defluent/src/Rector/ClassMethod/ReturnThisRemoveRector.php
+++ b/rules/defluent/src/Rector/ClassMethod/ReturnThisRemoveRector.php
@@ -84,7 +84,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $returnThis = $this->matchSingleReturnThis($node);
-        if ($returnThis === null) {
+        if (! $returnThis instanceof Return_) {
             return null;
         }
 
@@ -95,7 +95,7 @@ public function refactor(Node $node): ?Node
         $this->removeNode($returnThis);
 
         $classMethod = $node->getAttribute(AttributeKey::METHOD_NODE);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof \PhpParser\Node\Stmt\ClassMethod) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/rules/defluent/src/Rector/MethodCall/FluentChainMethodCallToNormalMethodCallRector.php b/rules/defluent/src/Rector/MethodCall/FluentChainMethodCallToNormalMethodCallRector.php
index 875ff3925b83..4b4a75e05bcb 100644
--- a/rules/defluent/src/Rector/MethodCall/FluentChainMethodCallToNormalMethodCallRector.php
+++ b/rules/defluent/src/Rector/MethodCall/FluentChainMethodCallToNormalMethodCallRector.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Stmt\Return_;
 use Rector\Defluent\Rector\AbstractFluentChainMethodCallRector;
 use Rector\Defluent\Rector\Return_\DefluentReturnMethodCallRector;
+use Rector\Defluent\ValueObject\AssignAndRootExprAndNodesToAdd;
 use Rector\Defluent\ValueObject\FluentCallsKind;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -70,7 +71,7 @@ public function refactor(Node $node): ?Node
             FluentCallsKind::NORMAL
         );
 
-        if ($assignAndRootExprAndNodesToAdd === null) {
+        if (! $assignAndRootExprAndNodesToAdd instanceof AssignAndRootExprAndNodesToAdd) {
             return null;
         }
 
diff --git a/rules/defluent/src/Rector/MethodCall/InArgFluentChainMethodCallToStandaloneMethodCallRector.php b/rules/defluent/src/Rector/MethodCall/InArgFluentChainMethodCallToStandaloneMethodCallRector.php
index c568ef24baee..4fa285d0a73e 100644
--- a/rules/defluent/src/Rector/MethodCall/InArgFluentChainMethodCallToStandaloneMethodCallRector.php
+++ b/rules/defluent/src/Rector/MethodCall/InArgFluentChainMethodCallToStandaloneMethodCallRector.php
@@ -12,6 +12,7 @@
 use Rector\Defluent\NodeAnalyzer\NewFluentChainMethodCallNodeAnalyzer;
 use Rector\Defluent\NodeFactory\VariableFromNewFactory;
 use Rector\Defluent\Rector\AbstractFluentChainMethodCallRector;
+use Rector\Defluent\ValueObject\AssignAndRootExprAndNodesToAdd;
 use Rector\Defluent\ValueObject\FluentCallsKind;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -121,7 +122,7 @@ public function refactor(Node $node): ?Node
             FluentCallsKind::IN_ARGS
         );
 
-        if ($assignAndRootExprAndNodesToAdd === null) {
+        if (! $assignAndRootExprAndNodesToAdd instanceof AssignAndRootExprAndNodesToAdd) {
             return null;
         }
 
diff --git a/rules/defluent/src/Rector/MethodCall/MethodCallOnSetterMethodCallToStandaloneAssignRector.php b/rules/defluent/src/Rector/MethodCall/MethodCallOnSetterMethodCallToStandaloneAssignRector.php
index 4502194f72e1..65feaf39580b 100644
--- a/rules/defluent/src/Rector/MethodCall/MethodCallOnSetterMethodCallToStandaloneAssignRector.php
+++ b/rules/defluent/src/Rector/MethodCall/MethodCallOnSetterMethodCallToStandaloneAssignRector.php
@@ -7,6 +7,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Arg;
 use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Expr\Variable;
 use Rector\Defluent\NodeAnalyzer\NewFluentChainMethodCallNodeAnalyzer;
 use Rector\Defluent\NodeFactory\VariableFromNewFactory;
@@ -98,12 +99,12 @@ public function refactor(Node $node): ?Node
         }
 
         $rootMethodCall = $this->fluentChainMethodCallNodeAnalyzer->resolveRootMethodCall($node);
-        if ($rootMethodCall === null) {
+        if (! $rootMethodCall instanceof \PhpParser\Node\Expr\MethodCall) {
             return null;
         }
 
         $new = $this->newFluentChainMethodCallNodeAnalyzer->matchNewInFluentSetterMethodCall($rootMethodCall);
-        if ($new === null) {
+        if (! $new instanceof New_) {
             return null;
         }
 
diff --git a/rules/defluent/src/Rector/MethodCall/NewFluentChainMethodCallToNonFluentRector.php b/rules/defluent/src/Rector/MethodCall/NewFluentChainMethodCallToNonFluentRector.php
index d5acbd05be98..896a33b6b296 100644
--- a/rules/defluent/src/Rector/MethodCall/NewFluentChainMethodCallToNonFluentRector.php
+++ b/rules/defluent/src/Rector/MethodCall/NewFluentChainMethodCallToNonFluentRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Stmt\Return_;
 use Rector\Defluent\Rector\AbstractFluentChainMethodCallRector;
+use Rector\Defluent\ValueObject\AssignAndRootExprAndNodesToAdd;
 use Rector\Defluent\ValueObject\FluentCallsKind;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -69,7 +70,7 @@ public function refactor(Node $node): ?Node
             $node,
             FluentCallsKind::NORMAL
         );
-        if ($assignAndRootExprAndNodesToAdd === null) {
+        if (! $assignAndRootExprAndNodesToAdd instanceof AssignAndRootExprAndNodesToAdd) {
             return null;
         }
 
diff --git a/rules/defluent/src/Rector/Return_/ReturnFluentChainMethodCallToNormalMethodCallRector.php b/rules/defluent/src/Rector/Return_/ReturnFluentChainMethodCallToNormalMethodCallRector.php
index 5c811bff0bd1..f885741727dc 100644
--- a/rules/defluent/src/Rector/Return_/ReturnFluentChainMethodCallToNormalMethodCallRector.php
+++ b/rules/defluent/src/Rector/Return_/ReturnFluentChainMethodCallToNormalMethodCallRector.php
@@ -10,6 +10,8 @@
 use Rector\Defluent\NodeFactory\ReturnFluentMethodCallFactory;
 use Rector\Defluent\NodeFactory\SeparateReturnMethodCallFactory;
 use Rector\Defluent\Rector\AbstractFluentChainMethodCallRector;
+use Rector\Defluent\ValueObject\FirstAssignFluentCall;
+use Rector\Defluent\ValueObject\FluentMethodCalls;
 use Rector\Defluent\ValueObjectFactory\FluentMethodCallsFactory;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -84,7 +86,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $methodCall = $this->matchReturnMethodCall($node);
-        if ($methodCall === null) {
+        if (! $methodCall instanceof MethodCall) {
             return null;
         }
 
@@ -109,7 +111,7 @@ public function refactor(Node $node): ?Node
     private function createStandaloneNodesToAddFromReturnFluentMethodCalls(MethodCall $methodCall): array
     {
         $fluentMethodCalls = $this->fluentMethodCallsFactory->createFromLastMethodCall($methodCall);
-        if ($fluentMethodCalls === null) {
+        if (! $fluentMethodCalls instanceof FluentMethodCalls) {
             return [];
         }
 
@@ -117,7 +119,7 @@ private function createStandaloneNodesToAddFromReturnFluentMethodCalls(MethodCal
             $fluentMethodCalls
         );
 
-        if ($firstAssignFluentCall === null) {
+        if (! $firstAssignFluentCall instanceof FirstAssignFluentCall) {
             return [];
         }
 
diff --git a/rules/defluent/src/Rector/Return_/ReturnNewFluentChainMethodCallToNonFluentRector.php b/rules/defluent/src/Rector/Return_/ReturnNewFluentChainMethodCallToNonFluentRector.php
index e47b002e591e..81a33609a753 100644
--- a/rules/defluent/src/Rector/Return_/ReturnNewFluentChainMethodCallToNonFluentRector.php
+++ b/rules/defluent/src/Rector/Return_/ReturnNewFluentChainMethodCallToNonFluentRector.php
@@ -5,8 +5,10 @@
 namespace Rector\Defluent\Rector\Return_;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Stmt\Return_;
 use Rector\Defluent\Rector\AbstractFluentChainMethodCallRector;
+use Rector\Defluent\ValueObject\AssignAndRootExprAndNodesToAdd;
 use Rector\Defluent\ValueObject\FluentCallsKind;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -56,7 +58,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $methodCall = $this->matchReturnMethodCall($node);
-        if ($methodCall === null) {
+        if (! $methodCall instanceof MethodCall) {
             return null;
         }
 
@@ -69,7 +71,7 @@ public function refactor(Node $node): ?Node
             FluentCallsKind::NORMAL
         );
 
-        if ($assignAndRootExprAndNodesToAdd === null) {
+        if (! $assignAndRootExprAndNodesToAdd instanceof AssignAndRootExprAndNodesToAdd) {
             return null;
         }
 
diff --git a/rules/defluent/src/ValueObject/AssignAndRootExpr.php b/rules/defluent/src/ValueObject/AssignAndRootExpr.php
index cbd25ed6908e..e2ebe9c090bb 100644
--- a/rules/defluent/src/ValueObject/AssignAndRootExpr.php
+++ b/rules/defluent/src/ValueObject/AssignAndRootExpr.php
@@ -5,6 +5,7 @@
 namespace Rector\Defluent\ValueObject;
 
 use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Stmt\Return_;
 use Rector\Core\Exception\ShouldNotHappenException;
@@ -47,7 +48,7 @@ public function getSilentVariable(): ?Variable
 
     public function getReturnSilentVariable(): Return_
     {
-        if ($this->silentVariable === null) {
+        if (! $this->silentVariable instanceof Variable) {
             throw new ShouldNotHappenException();
         }
 
@@ -71,7 +72,7 @@ public function isFirstCallFactory(): bool
     public function getFactoryAssignVariable(): Expr
     {
         $firstAssign = $this->getFirstAssign();
-        if ($firstAssign === null) {
+        if (! $firstAssign instanceof Assign) {
             return $this->getCallerExpr();
         }
 
diff --git a/rules/defluent/src/ValueObject/FirstAssignFluentCall.php b/rules/defluent/src/ValueObject/FirstAssignFluentCall.php
index 9a517646a791..a949e76d9e96 100644
--- a/rules/defluent/src/ValueObject/FirstAssignFluentCall.php
+++ b/rules/defluent/src/ValueObject/FirstAssignFluentCall.php
@@ -5,6 +5,7 @@
 namespace Rector\Defluent\ValueObject;
 
 use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\MethodCall;
 use Rector\Defluent\Contract\ValueObject\FirstCallFactoryAwareInterface;
 use Rector\Defluent\Contract\ValueObject\RootExprAwareInterface;
@@ -51,7 +52,7 @@ public function isFirstCallFactory(): bool
     public function getFactoryAssignVariable(): Expr
     {
         $firstAssign = $this->getFirstAssign();
-        if ($firstAssign === null) {
+        if (! $firstAssign instanceof Assign) {
             return $this->assignExpr;
         }
 
diff --git a/rules/dependency-injection/src/Rector/Class_/MultiParentingToAbstractDependencyRector.php b/rules/dependency-injection/src/Rector/Class_/MultiParentingToAbstractDependencyRector.php
index 6857c8e666cf..679d7e889e01 100644
--- a/rules/dependency-injection/src/Rector/Class_/MultiParentingToAbstractDependencyRector.php
+++ b/rules/dependency-injection/src/Rector/Class_/MultiParentingToAbstractDependencyRector.php
@@ -162,7 +162,7 @@ public function refactor(Node $node): ?Node
         }
 
         $classMethod = $node->getMethod(MethodName::CONSTRUCT);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return null;
         }
 
@@ -173,7 +173,7 @@ public function refactor(Node $node): ?Node
 
         foreach ($childrenClasses as $childrenClass) {
             $constructorClassMethod = $childrenClass->getMethod(MethodName::CONSTRUCT);
-            if ($constructorClassMethod === null) {
+            if (! $constructorClassMethod instanceof ClassMethod) {
                 continue;
             }
 
@@ -202,7 +202,7 @@ public function configure(array $configuration): void
     private function resolveConstructorParamClassTypes(Class_ $class): array
     {
         $constructorClassMethod = $class->getMethod(MethodName::CONSTRUCT);
-        if ($constructorClassMethod === null) {
+        if (! $constructorClassMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/doctrine-code-quality/src/NodeAnalyzer/ConstructorAssignPropertyAnalyzer.php b/rules/doctrine-code-quality/src/NodeAnalyzer/ConstructorAssignPropertyAnalyzer.php
index 747832d906d4..9f9a70cf0534 100644
--- a/rules/doctrine-code-quality/src/NodeAnalyzer/ConstructorAssignPropertyAnalyzer.php
+++ b/rules/doctrine-code-quality/src/NodeAnalyzer/ConstructorAssignPropertyAnalyzer.php
@@ -7,6 +7,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Property;
 use Rector\Core\PhpParser\Node\BetterNodeFinder;
 use Rector\Core\ValueObject\MethodName;
@@ -39,7 +40,7 @@ public function resolveConstructorAssign(Property $property): ?Node
         }
 
         $constructClassMethod = $classLike->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/doctrine-code-quality/src/NodeAnalyzer/SetterClassMethodAnalyzer.php b/rules/doctrine-code-quality/src/NodeAnalyzer/SetterClassMethodAnalyzer.php
index 51df81d38ed9..9aaa9e4a7d2f 100644
--- a/rules/doctrine-code-quality/src/NodeAnalyzer/SetterClassMethodAnalyzer.php
+++ b/rules/doctrine-code-quality/src/NodeAnalyzer/SetterClassMethodAnalyzer.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Stmt;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Expression;
@@ -38,7 +39,7 @@ public function __construct(NodeTypeResolver $nodeTypeResolver, NodeNameResolver
     public function matchNullalbeClassMethodProperty(ClassMethod $classMethod): ?Property
     {
         $propertyFetch = $this->matchNullalbeClassMethodPropertyFetch($classMethod);
-        if ($propertyFetch === null) {
+        if (! $propertyFetch instanceof PropertyFetch) {
             return null;
         }
 
@@ -48,7 +49,7 @@ public function matchNullalbeClassMethodProperty(ClassMethod $classMethod): ?Pro
     public function matchDateTimeSetterProperty(ClassMethod $classMethod): ?Property
     {
         $propertyFetch = $this->matchDateTimeSetterPropertyFetch($classMethod);
-        if ($propertyFetch === null) {
+        if (! $propertyFetch instanceof PropertyFetch) {
             return null;
         }
 
@@ -66,7 +67,7 @@ public function matchDateTimeSetterProperty(ClassMethod $classMethod): ?Property
     private function matchNullalbeClassMethodPropertyFetch(ClassMethod $classMethod): ?PropertyFetch
     {
         $propertyFetch = $this->matchSetterOnlyPropertyFetch($classMethod);
-        if ($propertyFetch === null) {
+        if (! $propertyFetch instanceof PropertyFetch) {
             return null;
         }
 
@@ -97,7 +98,7 @@ private function getPropertyByPropertyFetch(ClassMethod $classMethod, PropertyFe
     private function matchDateTimeSetterPropertyFetch(ClassMethod $classMethod): ?PropertyFetch
     {
         $propertyFetch = $this->matchSetterOnlyPropertyFetch($classMethod);
-        if ($propertyFetch === null) {
+        if (! $propertyFetch instanceof PropertyFetch) {
             return null;
         }
 
@@ -127,7 +128,7 @@ private function matchSetterOnlyPropertyFetch(ClassMethod $classMethod): ?Proper
         }
 
         $onlyStmt = $stmts[0] ?? null;
-        if ($onlyStmt === null) {
+        if (! $onlyStmt instanceof Stmt) {
             return null;
         }
 
diff --git a/rules/doctrine-code-quality/src/Rector/ClassMethod/MakeEntitySetterNullabilityInSyncWithPropertyRector.php b/rules/doctrine-code-quality/src/Rector/ClassMethod/MakeEntitySetterNullabilityInSyncWithPropertyRector.php
index 2539b813b93b..14a1bb98dd34 100644
--- a/rules/doctrine-code-quality/src/Rector/ClassMethod/MakeEntitySetterNullabilityInSyncWithPropertyRector.php
+++ b/rules/doctrine-code-quality/src/Rector/ClassMethod/MakeEntitySetterNullabilityInSyncWithPropertyRector.php
@@ -110,7 +110,7 @@ public function refactor(Node $node): ?Node
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($property);
 
         $manyToOneTagValueNode = $phpDocInfo->getByType(ManyToOneTagValueNode::class);
-        if ($manyToOneTagValueNode === null) {
+        if (! $manyToOneTagValueNode instanceof ManyToOneTagValueNode) {
             return null;
         }
 
diff --git a/rules/doctrine-code-quality/src/Rector/Class_/MoveCurrentDateTimeDefaultInEntityToConstructorRector.php b/rules/doctrine-code-quality/src/Rector/Class_/MoveCurrentDateTimeDefaultInEntityToConstructorRector.php
index 5f2ef5941e33..4aaafbbb7a27 100644
--- a/rules/doctrine-code-quality/src/Rector/Class_/MoveCurrentDateTimeDefaultInEntityToConstructorRector.php
+++ b/rules/doctrine-code-quality/src/Rector/Class_/MoveCurrentDateTimeDefaultInEntityToConstructorRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\Property;
+use Rector\BetterPhpDocParser\ValueObject\PhpDocNode\Doctrine\Property_\ColumnTagValueNode;
 use Rector\Core\Rector\AbstractRector;
 use Rector\DoctrineCodeQuality\NodeAnalyzer\ColumnDatetimePropertyAnalyzer;
 use Rector\DoctrineCodeQuality\NodeAnalyzer\ConstructorAssignPropertyAnalyzer;
@@ -141,7 +142,7 @@ private function refactorProperty(Property $property, Class_ $class): ?Property
             $property
         );
 
-        if ($columnTagValueNode === null) {
+        if (! $columnTagValueNode instanceof ColumnTagValueNode) {
             return null;
         }
 
diff --git a/rules/doctrine-code-quality/src/Rector/MethodCall/ChangeSetParametersArrayToArrayCollectionRector.php b/rules/doctrine-code-quality/src/Rector/MethodCall/ChangeSetParametersArrayToArrayCollectionRector.php
index 4453c2cdd8bf..fbaeb1732eed 100644
--- a/rules/doctrine-code-quality/src/Rector/MethodCall/ChangeSetParametersArrayToArrayCollectionRector.php
+++ b/rules/doctrine-code-quality/src/Rector/MethodCall/ChangeSetParametersArrayToArrayCollectionRector.php
@@ -12,6 +12,7 @@
 use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassLike;
 use Rector\Core\Exception\ShouldNotHappenException;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -115,7 +116,7 @@ public function getSomething()
     private function shouldSkipMethodCall(MethodCall $methodCall): bool
     {
         $classLike = $methodCall->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return true;
         }
 
diff --git a/rules/doctrine-code-quality/src/Rector/Property/ChangeBigIntEntityPropertyToIntTypeRector.php b/rules/doctrine-code-quality/src/Rector/Property/ChangeBigIntEntityPropertyToIntTypeRector.php
index f81edde60abb..24bdc608129c 100644
--- a/rules/doctrine-code-quality/src/Rector/Property/ChangeBigIntEntityPropertyToIntTypeRector.php
+++ b/rules/doctrine-code-quality/src/Rector/Property/ChangeBigIntEntityPropertyToIntTypeRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Property;
+use PHPStan\PhpDocParser\Ast\PhpDoc\VarTagValueNode;
 use PHPStan\Type\BooleanType;
 use PHPStan\Type\FloatType;
 use PHPStan\Type\IntegerType;
@@ -102,7 +103,7 @@ public function refactor(Node $node): ?Node
         }
 
         $attributeAwareVarTagValueNode = $phpDocInfo->getVarTagValueNode();
-        if ($attributeAwareVarTagValueNode === null) {
+        if (! $attributeAwareVarTagValueNode instanceof VarTagValueNode) {
             return null;
         }
 
diff --git a/rules/doctrine-code-quality/src/Rector/Property/CorrectDefaultTypesOnEntityPropertyRector.php b/rules/doctrine-code-quality/src/Rector/Property/CorrectDefaultTypesOnEntityPropertyRector.php
index 2c2fa9139487..db410bcd5c98 100644
--- a/rules/doctrine-code-quality/src/Rector/Property/CorrectDefaultTypesOnEntityPropertyRector.php
+++ b/rules/doctrine-code-quality/src/Rector/Property/CorrectDefaultTypesOnEntityPropertyRector.php
@@ -5,6 +5,7 @@
 namespace Rector\DoctrineCodeQuality\Rector\Property;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ConstFetch;
 use PhpParser\Node\Scalar\LNumber;
 use PhpParser\Node\Scalar\String_;
@@ -86,7 +87,7 @@ public function refactor(Node $node): ?Node
         $onlyProperty = $node->props[0];
 
         $defaultValue = $onlyProperty->default;
-        if ($defaultValue === null) {
+        if (! $defaultValue instanceof Expr) {
             return null;
         }
 
diff --git a/rules/doctrine-code-quality/src/Rector/Property/ImproveDoctrineCollectionDocTypeInEntityRector.php b/rules/doctrine-code-quality/src/Rector/Property/ImproveDoctrineCollectionDocTypeInEntityRector.php
index ede1a1287be8..c5635207a641 100644
--- a/rules/doctrine-code-quality/src/Rector/Property/ImproveDoctrineCollectionDocTypeInEntityRector.php
+++ b/rules/doctrine-code-quality/src/Rector/Property/ImproveDoctrineCollectionDocTypeInEntityRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Property;
+use PHPStan\PhpDocParser\Ast\PhpDoc\VarTagValueNode;
 use PHPStan\Type\Type;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTypeChanger;
 use Rector\BetterPhpDocParser\ValueObject\PhpDocNode\Doctrine\Property_\OneToManyTagValueNode;
@@ -18,6 +19,7 @@
 use Rector\DoctrineCodeQuality\PhpDoc\CollectionTypeResolver;
 use Rector\DoctrineCodeQuality\PhpDoc\CollectionVarTagValueNodeResolver;
 use Rector\NodeTypeResolver\Node\AttributeKey;
+use Rector\StaticTypeMapper\ValueObject\Type\FullyQualifiedObjectType;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -143,7 +145,7 @@ private function refactorProperty(Property $property): ?Property
                 $property
             );
 
-            if ($collectionObjectType === null) {
+            if (! $collectionObjectType instanceof FullyQualifiedObjectType) {
                 return null;
             }
 
@@ -151,7 +153,7 @@ private function refactorProperty(Property $property): ?Property
             $this->phpDocTypeChanger->changeVarType($phpDocInfo, $newVarType);
         } else {
             $collectionObjectType = $this->collectionTypeResolver->resolveFromOneToManyProperty($property);
-            if ($collectionObjectType === null) {
+            if (! $collectionObjectType instanceof FullyQualifiedObjectType) {
                 return null;
             }
 
@@ -173,7 +175,7 @@ private function refactorClassMethod(ClassMethod $classMethod): ?ClassMethod
         }
 
         $collectionObjectType = $this->resolveCollectionSetterAssignType($classMethod);
-        if ($collectionObjectType === null) {
+        if (! $collectionObjectType instanceof Type) {
             return null;
         }
 
@@ -208,7 +210,7 @@ private function resolveCollectionSetterAssignType(ClassMethod $classMethod): ?T
         }
 
         $varTagValueNode = $this->collectionVarTagValueNodeResolver->resolve($property);
-        if ($varTagValueNode === null) {
+        if (! $varTagValueNode instanceof VarTagValueNode) {
             return null;
         }
 
diff --git a/rules/doctrine/src/Rector/Class_/AddUuidMirrorForRelationPropertyRector.php b/rules/doctrine/src/Rector/Class_/AddUuidMirrorForRelationPropertyRector.php
index d2a29da5d3d8..03d8465632a6 100644
--- a/rules/doctrine/src/Rector/Class_/AddUuidMirrorForRelationPropertyRector.php
+++ b/rules/doctrine/src/Rector/Class_/AddUuidMirrorForRelationPropertyRector.php
@@ -189,7 +189,7 @@ private function shouldSkipProperty(Class_ $class, Property $property): bool
 
         $oneToOneTagValueNode = $propertyPhpDocInfo->getByType(OneToOneTagValueNode::class);
         // skip mappedBy oneToOne, as the column doesn't really exist
-        if ($oneToOneTagValueNode === null) {
+        if (! $oneToOneTagValueNode instanceof OneToOneTagValueNode) {
             return false;
         }
         return (bool) $oneToOneTagValueNode->getMappedBy();
diff --git a/rules/doctrine/src/Rector/Class_/AlwaysInitializeUuidInEntityRector.php b/rules/doctrine/src/Rector/Class_/AlwaysInitializeUuidInEntityRector.php
index 9c36a26260dc..a6d3da085b45 100644
--- a/rules/doctrine/src/Rector/Class_/AlwaysInitializeUuidInEntityRector.php
+++ b/rules/doctrine/src/Rector/Class_/AlwaysInitializeUuidInEntityRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Property;
 use PHPStan\Type\ObjectType;
 use Rector\Core\PhpParser\Node\Manipulator\ClassDependencyManipulator;
@@ -106,7 +107,7 @@ public function refactor(Node $node): ?Node
         }
 
         $uuidProperty = $this->resolveUuidPropertyFromClass($node);
-        if ($uuidProperty === null) {
+        if (! $uuidProperty instanceof Property) {
             return null;
         }
 
@@ -146,7 +147,7 @@ private function resolveUuidPropertyFromClass(Class_ $class): ?Property
     private function hasUuidInitAlreadyAdded(Class_ $class, string $uuidPropertyName): bool
     {
         $constructClassMethod = $class->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return false;
         }
 
diff --git a/rules/doctrine/src/Rector/Class_/ManagerRegistryGetManagerToEntityManagerRector.php b/rules/doctrine/src/Rector/Class_/ManagerRegistryGetManagerToEntityManagerRector.php
index 41e19288a66c..81fc7aa25521 100644
--- a/rules/doctrine/src/Rector/Class_/ManagerRegistryGetManagerToEntityManagerRector.php
+++ b/rules/doctrine/src/Rector/Class_/ManagerRegistryGetManagerToEntityManagerRector.php
@@ -124,7 +124,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $constructorClassMethod = $node->getMethod(MethodName::CONSTRUCT);
-        if ($constructorClassMethod === null) {
+        if (! $constructorClassMethod instanceof ClassMethod) {
             return null;
         }
 
@@ -140,7 +140,7 @@ public function refactor(Node $node): ?Node
         $managerRegistryParam = $this->resolveManagerRegistryParam($constructorClassMethod);
 
         // no registry manager in the constructor
-        if ($managerRegistryParam === null) {
+        if (! $managerRegistryParam instanceof Param) {
             return null;
         }
 
diff --git a/rules/doctrine/src/Rector/Identical/ChangeIdenticalUuidToEqualsMethodCallRector.php b/rules/doctrine/src/Rector/Identical/ChangeIdenticalUuidToEqualsMethodCallRector.php
index 806e43cfd5c2..2244403403ae 100644
--- a/rules/doctrine/src/Rector/Identical/ChangeIdenticalUuidToEqualsMethodCallRector.php
+++ b/rules/doctrine/src/Rector/Identical/ChangeIdenticalUuidToEqualsMethodCallRector.php
@@ -79,7 +79,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $twoNodeMatch = $this->matchEntityCallAndComparedVariable($node);
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return null;
         }
 
diff --git a/rules/doctrine/src/Rector/MethodCall/ChangeSetIdToUuidValueRector.php b/rules/doctrine/src/Rector/MethodCall/ChangeSetIdToUuidValueRector.php
index 66843ff7902f..83b23dd9611d 100644
--- a/rules/doctrine/src/Rector/MethodCall/ChangeSetIdToUuidValueRector.php
+++ b/rules/doctrine/src/Rector/MethodCall/ChangeSetIdToUuidValueRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Expr\ClassConstFetch;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassConst;
 use PhpParser\Node\Stmt\Expression;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\StringType;
@@ -115,7 +116,7 @@ public function refactor(Node $node): ?Node
         $argumentValue = $node->args[0]->value;
         if ($argumentValue instanceof ClassConstFetch) {
             $classConst = $this->nodeRepository->findClassConstByClassConstFetch($argumentValue);
-            if ($classConst === null) {
+            if (! $classConst instanceof ClassConst) {
                 return null;
             }
 
@@ -162,7 +163,7 @@ private function getSetUuidMethodCallOnSameVariable(MethodCall $methodCall): ?Me
             $parentNode = $parentNode->getAttribute(AttributeKey::PARENT_NODE);
         }
 
-        if ($parentNode === null) {
+        if (! $parentNode instanceof Node) {
             return null;
         }
 
diff --git a/rules/doctrine/src/Rector/Property/AddUuidAnnotationsToIdPropertyRector.php b/rules/doctrine/src/Rector/Property/AddUuidAnnotationsToIdPropertyRector.php
index 45929e25346c..0cf6211ad5f4 100644
--- a/rules/doctrine/src/Rector/Property/AddUuidAnnotationsToIdPropertyRector.php
+++ b/rules/doctrine/src/Rector/Property/AddUuidAnnotationsToIdPropertyRector.php
@@ -115,7 +115,7 @@ public function refactor(Node $node): ?Node
     private function changeColumnTypeToUuidBinary(PhpDocInfo $phpDocInfo): void
     {
         $columnTagValueNode = $phpDocInfo->getByType(ColumnTagValueNode::class);
-        if ($columnTagValueNode === null) {
+        if (! $columnTagValueNode instanceof ColumnTagValueNode) {
             return;
         }
 
diff --git a/rules/downgrade-php72/src/Rector/ClassMethod/DowngradeParameterTypeWideningRector.php b/rules/downgrade-php72/src/Rector/ClassMethod/DowngradeParameterTypeWideningRector.php
index b000e18600f6..4494d4adb060 100644
--- a/rules/downgrade-php72/src/Rector/ClassMethod/DowngradeParameterTypeWideningRector.php
+++ b/rules/downgrade-php72/src/Rector/ClassMethod/DowngradeParameterTypeWideningRector.php
@@ -135,7 +135,7 @@ private function refactorParamForAncestorsAndSiblings(Param $param, FunctionLike
         }
 
         $classReflection = $scope->getClassReflection();
-        if ($classReflection === null) {
+        if (! $classReflection instanceof ClassReflection) {
             return;
         }
 
@@ -168,7 +168,7 @@ private function refactorParamForAncestorsAndSiblings(Param $param, FunctionLike
              * The interface is also retrieve though, so that method
              * will eventually be refactored.
              */
-            if ($classMethod === null) {
+            if (! $classMethod instanceof ClassMethod) {
                 continue;
             }
             $this->removeParamTypeFromMethod($ancestorClassOrInterface, $position, $classMethod);
@@ -236,7 +236,7 @@ private function removeParamTypeFromMethod(
     ): void {
         $classMethodName = $this->getName($classMethod);
         $currentClassMethod = $classLike->getMethod($classMethodName);
-        if ($currentClassMethod === null) {
+        if (! $currentClassMethod instanceof ClassMethod) {
             return;
         }
 
@@ -272,7 +272,7 @@ private function removeParamTypeFromMethodForChildren(
                 continue;
             }
             $childClassMethod = $this->nodeRepository->findClassMethod($childClassName, $methodName);
-            if ($childClassMethod === null) {
+            if (! $childClassMethod instanceof ClassMethod) {
                 continue;
             }
             $this->removeParamTypeFromMethod($childClassLike, $position, $childClassMethod);
diff --git a/rules/downgrade-php73/src/Rector/List_/DowngradeListReferenceAssignmentRector.php b/rules/downgrade-php73/src/Rector/List_/DowngradeListReferenceAssignmentRector.php
index b7ba30c6ff25..6861c9b3bc3d 100644
--- a/rules/downgrade-php73/src/Rector/List_/DowngradeListReferenceAssignmentRector.php
+++ b/rules/downgrade-php73/src/Rector/List_/DowngradeListReferenceAssignmentRector.php
@@ -167,7 +167,7 @@ private function countRightSideMostParamsByRefOrEmpty(array $listItems): int
         for ($i = $listItemsCount - 1; $i >= 0; --$i) {
             $listItem = $listItems[$i];
             // Also include null items, since they can be removed
-            if ($listItem === null || $listItem->byRef) {
+            if (! $listItem instanceof ArrayItem || $listItem->byRef) {
                 ++$count;
                 continue;
             }
@@ -200,7 +200,7 @@ private function createAssignRefArrayFromListReferences(
         // After filtering, their original position is kept in the array
         $newNodes = [];
         foreach ($listItems as $position => $listItem) {
-            if ($listItem === null) {
+            if (! $listItem instanceof ArrayItem) {
                 continue;
             }
             if ($listItem->value instanceof Variable && ! $listItem->byRef) {
diff --git a/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeContravariantArgumentTypeRector.php b/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeContravariantArgumentTypeRector.php
index 1ce8f516aff2..0affa4c3b3a7 100644
--- a/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeContravariantArgumentTypeRector.php
+++ b/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeContravariantArgumentTypeRector.php
@@ -104,7 +104,7 @@ private function getDifferentParamTypeFromAncestorClass(Param $param, FunctionLi
         }
 
         $classReflection = $scope->getClassReflection();
-        if ($classReflection === null) {
+        if (! $classReflection instanceof ClassReflection) {
             return null;
         }
 
diff --git a/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeCovariantReturnTypeRector.php b/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeCovariantReturnTypeRector.php
index 2b6230a65eb8..55856bef1764 100644
--- a/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeCovariantReturnTypeRector.php
+++ b/rules/downgrade-php74/src/Rector/ClassMethod/DowngradeCovariantReturnTypeRector.php
@@ -135,7 +135,7 @@ private function getDifferentReturnTypeNameFromAncestorClass(ClassMethod $classM
         }
 
         $classReflection = $scope->getClassReflection();
-        if ($classReflection === null) {
+        if (! $classReflection instanceof ClassReflection) {
             return null;
         }
 
diff --git a/rules/downgrade-php74/src/Rector/Identical/DowngradeFreadFwriteFalsyToNegationRector.php b/rules/downgrade-php74/src/Rector/Identical/DowngradeFreadFwriteFalsyToNegationRector.php
index 7799c70ae2ff..06c3aed9f257 100644
--- a/rules/downgrade-php74/src/Rector/Identical/DowngradeFreadFwriteFalsyToNegationRector.php
+++ b/rules/downgrade-php74/src/Rector/Identical/DowngradeFreadFwriteFalsyToNegationRector.php
@@ -57,7 +57,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $compareValue = $this->getCompareValue($node);
-        if ($compareValue === null) {
+        if (! $compareValue instanceof Expr) {
             return null;
         }
 
diff --git a/rules/downgrade-php80/src/Rector/Class_/DowngradePropertyPromotionRector.php b/rules/downgrade-php80/src/Rector/Class_/DowngradePropertyPromotionRector.php
index 85faa41e5643..3f05fa84f498 100644
--- a/rules/downgrade-php80/src/Rector/Class_/DowngradePropertyPromotionRector.php
+++ b/rules/downgrade-php80/src/Rector/Class_/DowngradePropertyPromotionRector.php
@@ -98,7 +98,7 @@ public function refactor(Node $node): ?Node
     private function resolvePromotedParams(Class_ $class): array
     {
         $constructorClassMethod = $class->getMethod(MethodName::CONSTRUCT);
-        if ($constructorClassMethod === null) {
+        if (! $constructorClassMethod instanceof \PhpParser\Node\Stmt\ClassMethod) {
             return [];
         }
 
diff --git a/rules/early-return/src/NodeTransformer/ConditionInverter.php b/rules/early-return/src/NodeTransformer/ConditionInverter.php
index 48774e7ea305..9d6c7be1cb9a 100644
--- a/rules/early-return/src/NodeTransformer/ConditionInverter.php
+++ b/rules/early-return/src/NodeTransformer/ConditionInverter.php
@@ -27,7 +27,7 @@ public function createInvertedCondition(Expr $expr): Expr
         // inverse condition
         if ($expr instanceof BinaryOp) {
             $inversedCondition = $this->binaryOpManipulator->invertCondition($expr);
-            if ($inversedCondition === null) {
+            if (! $inversedCondition instanceof BinaryOp) {
                 return new BooleanNot($expr);
             }
             if ($inversedCondition instanceof BooleanAnd) {
diff --git a/rules/early-return/src/Rector/If_/ChangeAndIfToEarlyReturnRector.php b/rules/early-return/src/Rector/If_/ChangeAndIfToEarlyReturnRector.php
index b210f9cc3f84..64331806e380 100644
--- a/rules/early-return/src/Rector/If_/ChangeAndIfToEarlyReturnRector.php
+++ b/rules/early-return/src/Rector/If_/ChangeAndIfToEarlyReturnRector.php
@@ -118,7 +118,7 @@ public function refactor(Node $node): ?Node
         }
 
         $ifReturn = $this->getIfReturn($node);
-        if ($ifReturn === null) {
+        if (! $ifReturn instanceof Stmt) {
             return null;
         }
 
@@ -303,7 +303,7 @@ private function isNestedIfInLoop(If_ $if): bool
     private function isLastIfOrBeforeLastReturn(If_ $if): bool
     {
         $nextNode = $if->getAttribute(AttributeKey::NEXT_NODE);
-        if ($nextNode === null) {
+        if (! $nextNode instanceof Node) {
             return true;
         }
         return $nextNode instanceof Return_;
diff --git a/rules/generic/src/Rector/ClassMethod/AddMethodParentCallRector.php b/rules/generic/src/Rector/ClassMethod/AddMethodParentCallRector.php
index c4f7491379df..06b1bdbf6c3a 100644
--- a/rules/generic/src/Rector/ClassMethod/AddMethodParentCallRector.php
+++ b/rules/generic/src/Rector/ClassMethod/AddMethodParentCallRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Generic\Rector\ClassMethod;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Expression;
 use Rector\Core\Contract\Rector\ConfigurableRectorInterface;
@@ -80,7 +81,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/generic/src/Rector/Property/AnnotatedPropertyInjectToConstructorInjectionRector.php b/rules/generic/src/Rector/Property/AnnotatedPropertyInjectToConstructorInjectionRector.php
index 4035faa4d59f..2270ca33e933 100644
--- a/rules/generic/src/Rector/Property/AnnotatedPropertyInjectToConstructorInjectionRector.php
+++ b/rules/generic/src/Rector/Property/AnnotatedPropertyInjectToConstructorInjectionRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\Property;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\Core\Rector\AbstractRector;
@@ -127,7 +128,7 @@ private function shouldSkipProperty(Property $property): bool
         }
 
         $classLike = $property->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return true;
         }
 
diff --git a/rules/generic/src/Rector/Property/ChangePropertyVisibilityRector.php b/rules/generic/src/Rector/Property/ChangePropertyVisibilityRector.php
index 2152a70dc538..35311f42e848 100644
--- a/rules/generic/src/Rector/Property/ChangePropertyVisibilityRector.php
+++ b/rules/generic/src/Rector/Property/ChangePropertyVisibilityRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Generic\Rector\Property;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\Property;
 use Rector\Core\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Core\Rector\AbstractRector;
@@ -85,7 +86,7 @@ public function refactor(Node $node): ?Node
     {
         foreach ($this->propertyToVisibilityByClass as $type => $propertyToVisibility) {
             $classNode = $node->getAttribute(AttributeKey::CLASS_NODE);
-            if ($classNode === null) {
+            if (! $classNode instanceof ClassLike) {
                 continue;
             }
 
diff --git a/rules/laravel/src/Rector/Assign/CallOnAppArrayAccessToStandaloneAssignRector.php b/rules/laravel/src/Rector/Assign/CallOnAppArrayAccessToStandaloneAssignRector.php
index 4e8752d944ad..47ba83f486ef 100644
--- a/rules/laravel/src/Rector/Assign/CallOnAppArrayAccessToStandaloneAssignRector.php
+++ b/rules/laravel/src/Rector/Assign/CallOnAppArrayAccessToStandaloneAssignRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Laravel\Rector\Assign;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ArrayDimFetch;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\MethodCall;
@@ -68,7 +69,7 @@ public function refactor(Node $node): ?Node
         }
 
         $arrayDimFetchDim = $methodCall->var->dim;
-        if ($arrayDimFetchDim === null) {
+        if (! $arrayDimFetchDim instanceof Expr) {
             return null;
         }
 
diff --git a/rules/laravel/src/Rector/Class_/PropertyDeferToDeferrableProviderToRector.php b/rules/laravel/src/Rector/Class_/PropertyDeferToDeferrableProviderToRector.php
index effeefaf38d6..8ac470033436 100644
--- a/rules/laravel/src/Rector/Class_/PropertyDeferToDeferrableProviderToRector.php
+++ b/rules/laravel/src/Rector/Class_/PropertyDeferToDeferrableProviderToRector.php
@@ -68,7 +68,7 @@ public function refactor(Node $node): ?Node
         }
 
         $deferProperty = $this->matchDeferWithFalseProperty($node);
-        if ($deferProperty === null) {
+        if (! $deferProperty instanceof Property) {
             return null;
         }
 
diff --git a/rules/laravel/src/Rector/MethodCall/ChangeQueryWhereDateValueWithCarbonRector.php b/rules/laravel/src/Rector/MethodCall/ChangeQueryWhereDateValueWithCarbonRector.php
index 64f175886540..d08d0287a97b 100644
--- a/rules/laravel/src/Rector/MethodCall/ChangeQueryWhereDateValueWithCarbonRector.php
+++ b/rules/laravel/src/Rector/MethodCall/ChangeQueryWhereDateValueWithCarbonRector.php
@@ -75,7 +75,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $argValue = $this->matchWhereDateThirdArgValue($node);
-        if ($argValue === null) {
+        if (! $argValue instanceof Expr) {
             return null;
         }
 
diff --git a/rules/laravel/src/Rector/New_/MakeTaggedPassedToParameterIterableTypeRector.php b/rules/laravel/src/Rector/New_/MakeTaggedPassedToParameterIterableTypeRector.php
index b9c6ba8d49fd..d84765dd3649 100644
--- a/rules/laravel/src/Rector/New_/MakeTaggedPassedToParameterIterableTypeRector.php
+++ b/rules/laravel/src/Rector/New_/MakeTaggedPassedToParameterIterableTypeRector.php
@@ -7,7 +7,9 @@
 use PhpParser\Node;
 use PhpParser\Node\Arg;
 use PhpParser\Node\Expr\New_;
+use PhpParser\Node\Param;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\MethodName;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -95,7 +97,7 @@ public function refactor(Node $node): ?Node
         }
 
         $class = $this->nodeRepository->findClass($className);
-        if ($class === null) {
+        if (! $class instanceof Class_) {
             return null;
         }
 
@@ -113,12 +115,12 @@ private function refactorClassWithArgType(Class_ $class, Arg $arg): void
         $constructClassMethod = $class->getMethod(MethodName::CONSTRUCT);
         $argumentPosition = (int) $arg->getAttribute(AttributeKey::ARGUMENT_POSITION);
 
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return;
         }
 
         $param = $constructClassMethod->params[$argumentPosition] ?? null;
-        if ($param === null) {
+        if (! $param instanceof Param) {
             return;
         }
 
diff --git a/rules/laravel/src/Rector/StaticCall/MinutesToSecondsInCacheRector.php b/rules/laravel/src/Rector/StaticCall/MinutesToSecondsInCacheRector.php
index c00490bd1db1..8f179793af26 100644
--- a/rules/laravel/src/Rector/StaticCall/MinutesToSecondsInCacheRector.php
+++ b/rules/laravel/src/Rector/StaticCall/MinutesToSecondsInCacheRector.php
@@ -12,6 +12,7 @@
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Expr\StaticCall;
 use PhpParser\Node\Scalar\LNumber;
+use PhpParser\Node\Stmt\ClassConst;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Laravel\ValueObject\TypeToTimeMethodAndPosition;
 use Rector\NodeCollector\NodeCollector\ParsedNodeCollector;
@@ -160,7 +161,7 @@ private function processArgumentOnPosition(Node $node, Expr $argExpr, int $argum
     private function refactorClassConstFetch(ClassConstFetch $classConstFetch): void
     {
         $classConst = $this->nodeRepository->findClassConstByClassConstFetch($classConstFetch);
-        if ($classConst === null) {
+        if (! $classConst instanceof ClassConst) {
             return;
         }
 
diff --git a/rules/legacy/src/Rector/Class_/ChangeSingletonToServiceRector.php b/rules/legacy/src/Rector/Class_/ChangeSingletonToServiceRector.php
index b8246fc9c09f..51e55b6f08ac 100644
--- a/rules/legacy/src/Rector/Class_/ChangeSingletonToServiceRector.php
+++ b/rules/legacy/src/Rector/Class_/ChangeSingletonToServiceRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Legacy\Rector\Class_;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr\StaticPropertyFetch;
 use PhpParser\Node\Stmt\Class_;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\MethodName;
@@ -88,7 +89,7 @@ public function refactor(Node $node): ?Node
         }
 
         $propertyAndClassMethodName = $this->matchStaticPropertyFetchAndGetSingletonMethodName($node);
-        if ($propertyAndClassMethodName === null) {
+        if (! $propertyAndClassMethodName instanceof PropertyAndClassMethodName) {
             return null;
         }
 
@@ -103,7 +104,7 @@ private function matchStaticPropertyFetchAndGetSingletonMethodName(Class_ $class
             }
 
             $staticPropertyFetch = $this->singletonClassMethodAnalyzer->matchStaticPropertyFetch($classMethod);
-            if ($staticPropertyFetch === null) {
+            if (! $staticPropertyFetch instanceof StaticPropertyFetch) {
                 return null;
             }
 
diff --git a/rules/mockista-to-mockery/src/Rector/Class_/MockeryTearDownRector.php b/rules/mockista-to-mockery/src/Rector/Class_/MockeryTearDownRector.php
index d65d95b4b219..367034dc2049 100644
--- a/rules/mockista-to-mockery/src/Rector/Class_/MockeryTearDownRector.php
+++ b/rules/mockista-to-mockery/src/Rector/Class_/MockeryTearDownRector.php
@@ -88,7 +88,7 @@ public function refactor(Node $node): ?Node
         }
 
         $tearDownClassMethod = $node->getMethod(MethodName::TEAR_DOWN);
-        if ($tearDownClassMethod === null) {
+        if (! $tearDownClassMethod instanceof ClassMethod) {
             $node->stmts[] = $this->createTearDownMethodWithMockeryClose();
         } elseif (! $this->containsMockeryClose($tearDownClassMethod)) {
             $tearDownClassMethod->stmts[] = $this->createMockeryClose();
diff --git a/rules/mysql-to-mysqli/src/Rector/FuncCall/MysqlQueryMysqlErrorWithLinkRector.php b/rules/mysql-to-mysqli/src/Rector/FuncCall/MysqlQueryMysqlErrorWithLinkRector.php
index afed8dcf29d6..7c1e99295d78 100644
--- a/rules/mysql-to-mysqli/src/Rector/FuncCall/MysqlQueryMysqlErrorWithLinkRector.php
+++ b/rules/mysql-to-mysqli/src/Rector/FuncCall/MysqlQueryMysqlErrorWithLinkRector.php
@@ -139,7 +139,7 @@ public function refactor(Node $node): ?Node
 
                 $this->removeExistingConnectionParameter($node);
 
-                if ($connectionVariable === null) {
+                if (! $connectionVariable instanceof Expr) {
                     return null;
                 }
 
diff --git a/rules/naming/src/ExpectedNameResolver/MatchParamTypeExpectedNameResolver.php b/rules/naming/src/ExpectedNameResolver/MatchParamTypeExpectedNameResolver.php
index 3a71b35a23ab..ed4692cb5e01 100644
--- a/rules/naming/src/ExpectedNameResolver/MatchParamTypeExpectedNameResolver.php
+++ b/rules/naming/src/ExpectedNameResolver/MatchParamTypeExpectedNameResolver.php
@@ -7,6 +7,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Param;
 use Rector\Naming\Naming\PropertyNaming;
+use Rector\Naming\ValueObject\ExpectedName;
 use Rector\StaticTypeMapper\StaticTypeMapper;
 
 final class MatchParamTypeExpectedNameResolver extends AbstractExpectedNameResolver
@@ -44,7 +45,7 @@ public function resolve(Node $node): ?string
 
         $staticType = $this->staticTypeMapper->mapPhpParserNodePHPStanType($node->type);
         $expectedName = $this->propertyNaming->getExpectedNameFromType($staticType);
-        if ($expectedName === null) {
+        if (! $expectedName instanceof ExpectedName) {
             return null;
         }
 
diff --git a/rules/naming/src/ExpectedNameResolver/MatchPropertyTypeExpectedNameResolver.php b/rules/naming/src/ExpectedNameResolver/MatchPropertyTypeExpectedNameResolver.php
index 281705ebeda9..ee5bdfb239b9 100644
--- a/rules/naming/src/ExpectedNameResolver/MatchPropertyTypeExpectedNameResolver.php
+++ b/rules/naming/src/ExpectedNameResolver/MatchPropertyTypeExpectedNameResolver.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Stmt\Property;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
 use Rector\Naming\Naming\PropertyNaming;
+use Rector\Naming\ValueObject\ExpectedName;
 
 final class MatchPropertyTypeExpectedNameResolver extends AbstractExpectedNameResolver
 {
@@ -35,7 +36,7 @@ public function resolve(Node $node): ?string
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
 
         $expectedName = $this->propertyNaming->getExpectedNameFromType($phpDocInfo->getVarType());
-        if ($expectedName === null) {
+        if (! $expectedName instanceof ExpectedName) {
             return null;
         }
 
diff --git a/rules/naming/src/Naming/ExpectedNameResolver.php b/rules/naming/src/Naming/ExpectedNameResolver.php
index 4087d4e154e4..7ee0200e8f65 100644
--- a/rules/naming/src/Naming/ExpectedNameResolver.php
+++ b/rules/naming/src/Naming/ExpectedNameResolver.php
@@ -20,6 +20,7 @@
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
 use Rector\Naming\ExpectedNameResolver\MatchParamTypeExpectedNameResolver;
+use Rector\Naming\ValueObject\ExpectedName;
 use Rector\NodeNameResolver\NodeNameResolver;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Rector\NodeTypeResolver\NodeTypeResolver;
@@ -119,7 +120,7 @@ public function resolveForAssignNew(Assign $assign): ?string
         $fullyQualifiedObjectType = new FullyQualifiedObjectType($className);
 
         $expectedName = $this->propertyNaming->getExpectedNameFromType($fullyQualifiedObjectType);
-        if ($expectedName === null) {
+        if (! $expectedName instanceof ExpectedName) {
             return null;
         }
 
@@ -190,7 +191,7 @@ public function resolveForForeach(Expr $expr): ?string
 
         if ($returnedType instanceof ArrayType) {
             $returnedType = $this->resolveReturnTypeFromArrayType($expr, $returnedType);
-            if ($returnedType === null) {
+            if (! $returnedType instanceof Type) {
                 return null;
             }
         }
@@ -202,7 +203,7 @@ public function resolveForForeach(Expr $expr): ?string
         }
 
         $expectedNameFromMethodName = $this->propertyNaming->getExpectedNameFromMethodName($name);
-        if ($expectedNameFromMethodName === null) {
+        if (! $expectedNameFromMethodName instanceof ExpectedName) {
             return null;
         }
 
diff --git a/rules/naming/src/Naming/PropertyNaming.php b/rules/naming/src/Naming/PropertyNaming.php
index 25a24e1729ef..0d26f10c2592 100644
--- a/rules/naming/src/Naming/PropertyNaming.php
+++ b/rules/naming/src/Naming/PropertyNaming.php
@@ -5,6 +5,8 @@
 namespace Rector\Naming\Naming;
 
 use Nette\Utils\Strings;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Property;
 use PhpParser\Node\Stmt\Return_;
@@ -296,7 +298,7 @@ private function removeInterfaceSuffixPrefix(string $className, string $shortNam
     private function getPrefixedClassMethods(Property $property): array
     {
         $classLike = $property->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return [];
         }
 
@@ -333,7 +335,7 @@ private function filterClassMethodsWithPropertyFetchReturnOnly(
             }
 
             $node = $return->expr;
-            if ($node === null) {
+            if (! $node instanceof Expr) {
                 return false;
             }
 
diff --git a/rules/naming/src/Rector/ClassMethod/MakeGetterClassMethodNameStartWithGetRector.php b/rules/naming/src/Rector/ClassMethod/MakeGetterClassMethodNameStartWithGetRector.php
index 147b8d6cd0eb..3bf99613720f 100644
--- a/rules/naming/src/Rector/ClassMethod/MakeGetterClassMethodNameStartWithGetRector.php
+++ b/rules/naming/src/Rector/ClassMethod/MakeGetterClassMethodNameStartWithGetRector.php
@@ -103,7 +103,7 @@ public function refactor(Node $node): ?Node
         }
 
         $getterClassMethodReturnedExpr = $this->matchGetterClassMethodReturnedExpr($node);
-        if ($getterClassMethodReturnedExpr === null) {
+        if (! $getterClassMethodReturnedExpr instanceof Expr) {
             return null;
         }
 
diff --git a/rules/naming/src/Rector/ClassMethod/MakeIsserClassMethodNameStartWithIsRector.php b/rules/naming/src/Rector/ClassMethod/MakeIsserClassMethodNameStartWithIsRector.php
index 3ebe864baacb..5558d2e66aff 100644
--- a/rules/naming/src/Rector/ClassMethod/MakeIsserClassMethodNameStartWithIsRector.php
+++ b/rules/naming/src/Rector/ClassMethod/MakeIsserClassMethodNameStartWithIsRector.php
@@ -104,7 +104,7 @@ public function refactor(Node $node): ?Node
         }
 
         $getterClassMethodReturnedExpr = $this->matchIsserClassMethodReturnedExpr($node);
-        if ($getterClassMethodReturnedExpr === null) {
+        if (! $getterClassMethodReturnedExpr instanceof Expr) {
             return null;
         }
 
diff --git a/rules/naming/src/Rector/ClassMethod/RenameParamToMatchTypeRector.php b/rules/naming/src/Rector/ClassMethod/RenameParamToMatchTypeRector.php
index 3874eb0bac93..e6f645e36be0 100644
--- a/rules/naming/src/Rector/ClassMethod/RenameParamToMatchTypeRector.php
+++ b/rules/naming/src/Rector/ClassMethod/RenameParamToMatchTypeRector.php
@@ -13,6 +13,7 @@
 use Rector\Naming\Guard\BreakingVariableRenameGuard;
 use Rector\Naming\Naming\ExpectedNameResolver;
 use Rector\Naming\ParamRenamer\ParamRenamer;
+use Rector\Naming\ValueObject\ParamRename;
 use Rector\Naming\ValueObjectFactory\ParamRenameFactory;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -119,12 +120,12 @@ public function refactor(Node $node): ?Node
             }
 
             $paramRename = $this->paramRenameFactory->create($param, $this->matchParamTypeExpectedNameResolver);
-            if ($paramRename === null) {
+            if (! $paramRename instanceof ParamRename) {
                 continue;
             }
 
             $matchTypeParamRenamerRename = $this->paramRenamer->rename($paramRename);
-            if ($matchTypeParamRenamerRename === null) {
+            if (! $matchTypeParamRenamerRename instanceof Param) {
                 continue;
             }
 
diff --git a/rules/naming/src/Rector/Class_/RenamePropertyToMatchTypeRector.php b/rules/naming/src/Rector/Class_/RenamePropertyToMatchTypeRector.php
index 6a1aa6fc331a..26e553052f09 100644
--- a/rules/naming/src/Rector/Class_/RenamePropertyToMatchTypeRector.php
+++ b/rules/naming/src/Rector/Class_/RenamePropertyToMatchTypeRector.php
@@ -7,7 +7,9 @@
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassLike;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Interface_;
+use PhpParser\Node\Stmt\Property;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\MethodName;
 use Rector\Core\ValueObject\PhpVersionFeature;
@@ -15,6 +17,7 @@
 use Rector\Naming\ExpectedNameResolver\MatchPropertyTypeExpectedNameResolver;
 use Rector\Naming\PropertyRenamer\MatchTypePropertyRenamer;
 use Rector\Naming\PropertyRenamer\PropertyFetchRenamer;
+use Rector\Naming\ValueObject\PropertyRename;
 use Rector\Naming\ValueObjectFactory\PropertyRenameFactory;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -138,12 +141,12 @@ private function refactorClassProperties(ClassLike $classLike): void
                 $property,
                 $this->matchPropertyTypeExpectedNameResolver
             );
-            if ($propertyRename === null) {
+            if (! $propertyRename instanceof PropertyRename) {
                 continue;
             }
 
             $renameProperty = $this->matchTypePropertyRenamer->rename($propertyRename);
-            if ($renameProperty === null) {
+            if (! $renameProperty instanceof Property) {
                 continue;
             }
 
@@ -158,7 +161,7 @@ private function renamePropertyPromotion(ClassLike $classLike): void
         }
 
         $constructClassMethod = $classLike->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return;
         }
 
diff --git a/rules/naming/src/Rector/Property/MakeBoolPropertyRespectIsHasWasMethodNamingRector.php b/rules/naming/src/Rector/Property/MakeBoolPropertyRespectIsHasWasMethodNamingRector.php
index 6fb68d64439c..2f01ae26cd80 100644
--- a/rules/naming/src/Rector/Property/MakeBoolPropertyRespectIsHasWasMethodNamingRector.php
+++ b/rules/naming/src/Rector/Property/MakeBoolPropertyRespectIsHasWasMethodNamingRector.php
@@ -9,6 +9,7 @@
 use Rector\Core\Rector\AbstractRector;
 use Rector\Naming\ExpectedNameResolver\BoolPropertyExpectedNameResolver;
 use Rector\Naming\PropertyRenamer\BoolPropertyRenamer;
+use Rector\Naming\ValueObject\PropertyRename;
 use Rector\Naming\ValueObjectFactory\PropertyRenameFactory;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -99,7 +100,7 @@ public function refactor(Node $node): ?Node
         }
 
         $propertyRename = $this->propertyRenameFactory->create($node, $this->boolPropertyExpectedNameResolver);
-        if ($propertyRename === null) {
+        if (! $propertyRename instanceof PropertyRename) {
             return null;
         }
 
diff --git a/rules/naming/src/Rector/Property/UnderscoreToCamelCasePropertyNameRector.php b/rules/naming/src/Rector/Property/UnderscoreToCamelCasePropertyNameRector.php
index ee74070d64de..75b16fa36254 100644
--- a/rules/naming/src/Rector/Property/UnderscoreToCamelCasePropertyNameRector.php
+++ b/rules/naming/src/Rector/Property/UnderscoreToCamelCasePropertyNameRector.php
@@ -10,6 +10,7 @@
 use Rector\Core\Rector\AbstractRector;
 use Rector\Naming\ExpectedNameResolver\UnderscoreCamelCaseExpectedNameResolver;
 use Rector\Naming\PropertyRenamer\UnderscoreCamelCasePropertyRenamer;
+use Rector\Naming\ValueObject\PropertyRename;
 use Rector\Naming\ValueObjectFactory\PropertyRenameFactory;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -94,7 +95,7 @@ public function refactor(Node $node): ?Node
         }
 
         $propertyRename = $this->propertyRenameFactory->create($node, $this->underscoreCamelCaseExpectedNameResolver);
-        if ($propertyRename === null) {
+        if (! $propertyRename instanceof PropertyRename) {
             return null;
         }
         $property = $this->underscoreCamelCasePropertyRenamer->rename($propertyRename);
diff --git a/rules/naming/src/Rector/Variable/UnderscoreToCamelCaseVariableNameRector.php b/rules/naming/src/Rector/Variable/UnderscoreToCamelCaseVariableNameRector.php
index 6fca00fc0048..899f2012dc06 100644
--- a/rules/naming/src/Rector/Variable/UnderscoreToCamelCaseVariableNameRector.php
+++ b/rules/naming/src/Rector/Variable/UnderscoreToCamelCaseVariableNameRector.php
@@ -13,6 +13,7 @@
 use Rector\Core\Util\StaticRectorStrings;
 use Rector\Naming\ExpectedNameResolver\UnderscoreCamelCaseExpectedNameResolver;
 use Rector\Naming\ParamRenamer\ParamRenamer;
+use Rector\Naming\ValueObject\ParamRename;
 use Rector\Naming\ValueObjectFactory\ParamRenameFactory;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -132,12 +133,12 @@ public function refactor(Node $node): ?Node
     private function renameParam(Param $param): ?Variable
     {
         $paramRename = $this->paramRenameFactory->create($param, $this->underscoreCamelCaseExpectedNameResolver);
-        if ($paramRename === null) {
+        if (! $paramRename instanceof ParamRename) {
             return null;
         }
 
         $renamedParam = $this->paramRenamer->rename($paramRename);
-        if ($renamedParam === null) {
+        if (! $renamedParam instanceof Param) {
             return null;
         }
 
diff --git a/rules/naming/src/ValueObjectFactory/PropertyRenameFactory.php b/rules/naming/src/ValueObjectFactory/PropertyRenameFactory.php
index 8ffbafa81932..143ea762c9da 100644
--- a/rules/naming/src/ValueObjectFactory/PropertyRenameFactory.php
+++ b/rules/naming/src/ValueObjectFactory/PropertyRenameFactory.php
@@ -4,6 +4,7 @@
 
 namespace Rector\Naming\ValueObjectFactory;
 
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\Property;
 use Rector\Naming\Contract\ExpectedNameResolver\ExpectedNameResolverInterface;
 use Rector\Naming\ValueObject\PropertyRename;
@@ -39,7 +40,7 @@ public function create(Property $property, ExpectedNameResolverInterface $expect
         $currentName = $this->nodeNameResolver->getName($property);
 
         $propertyClassLike = $property->getAttribute(AttributeKey::CLASS_NODE);
-        if ($propertyClassLike === null) {
+        if (! $propertyClassLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/nette-code-quality/src/FormControlTypeResolver/ArrayDimFetchControlTypeResolver.php b/rules/nette-code-quality/src/FormControlTypeResolver/ArrayDimFetchControlTypeResolver.php
index 3fd62d69ee8e..3dca8107844a 100644
--- a/rules/nette-code-quality/src/FormControlTypeResolver/ArrayDimFetchControlTypeResolver.php
+++ b/rules/nette-code-quality/src/FormControlTypeResolver/ArrayDimFetchControlTypeResolver.php
@@ -71,7 +71,7 @@ public function resolve(Node $node): array
         }
 
         $createComponentClassMethod = $this->matchCreateComponentClassMethod($node, $controlShortName);
-        if ($createComponentClassMethod === null) {
+        if (! $createComponentClassMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/nette-code-quality/src/FormControlTypeResolver/MagicNetteFactoryInterfaceFormControlTypeResolver.php b/rules/nette-code-quality/src/FormControlTypeResolver/MagicNetteFactoryInterfaceFormControlTypeResolver.php
index 204d4ab41eac..dc7af652b858 100644
--- a/rules/nette-code-quality/src/FormControlTypeResolver/MagicNetteFactoryInterfaceFormControlTypeResolver.php
+++ b/rules/nette-code-quality/src/FormControlTypeResolver/MagicNetteFactoryInterfaceFormControlTypeResolver.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Interface_;
 use PHPStan\Type\TypeWithClassName;
 use Rector\Core\ValueObject\MethodName;
@@ -64,7 +65,7 @@ public function resolve(Node $node): array
         }
 
         $classMethod = $this->nodeRepository->findClassMethodByMethodCall($node);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return [];
         }
 
@@ -85,7 +86,7 @@ public function resolve(Node $node): array
             MethodName::CONSTRUCT
         );
 
-        if ($constructorClassMethod === null) {
+        if (! $constructorClassMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/nette-code-quality/src/FormControlTypeResolver/MethodCallFormControlTypeResolver.php b/rules/nette-code-quality/src/FormControlTypeResolver/MethodCallFormControlTypeResolver.php
index eb7419a1ace8..04507a8eacc8 100644
--- a/rules/nette-code-quality/src/FormControlTypeResolver/MethodCallFormControlTypeResolver.php
+++ b/rules/nette-code-quality/src/FormControlTypeResolver/MethodCallFormControlTypeResolver.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\NetteCodeQuality\Contract\FormControlTypeResolverInterface;
 use Rector\NetteCodeQuality\Contract\MethodNamesByInputNamesResolverAwareInterface;
 use Rector\NetteCodeQuality\NodeResolver\MethodNamesByInputNamesResolver;
@@ -49,7 +50,7 @@ public function resolve(Node $node): array
         }
 
         $classMethod = $this->nodeRepository->findClassMethodByMethodCall($node);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/nette-code-quality/src/FormControlTypeResolver/NewFormControlTypeResolver.php b/rules/nette-code-quality/src/FormControlTypeResolver/NewFormControlTypeResolver.php
index e78fca4a8df8..e811608aaf41 100644
--- a/rules/nette-code-quality/src/FormControlTypeResolver/NewFormControlTypeResolver.php
+++ b/rules/nette-code-quality/src/FormControlTypeResolver/NewFormControlTypeResolver.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\New_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\ValueObject\MethodName;
 use Rector\NetteCodeQuality\Contract\FormControlTypeResolverInterface;
 use Rector\NetteCodeQuality\Contract\MethodNamesByInputNamesResolverAwareInterface;
@@ -51,7 +52,7 @@ public function resolve(Node $node): array
         }
 
         $constructorClassMethod = $this->nodeRepository->findClassMethod($className, MethodName::CONSTRUCT);
-        if ($constructorClassMethod === null) {
+        if (! $constructorClassMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/nette-code-quality/src/FormControlTypeResolver/ThisVariableInAnotherMethodFormControlTypeResolver.php b/rules/nette-code-quality/src/FormControlTypeResolver/ThisVariableInAnotherMethodFormControlTypeResolver.php
index b9eda330bf4c..f7c51f287dbb 100644
--- a/rules/nette-code-quality/src/FormControlTypeResolver/ThisVariableInAnotherMethodFormControlTypeResolver.php
+++ b/rules/nette-code-quality/src/FormControlTypeResolver/ThisVariableInAnotherMethodFormControlTypeResolver.php
@@ -7,6 +7,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\ValueObject\MethodName;
 use Rector\NetteCodeQuality\Contract\FormControlTypeResolverInterface;
 use Rector\NetteCodeQuality\Contract\MethodNamesByInputNamesResolverAwareInterface;
@@ -42,7 +43,7 @@ public function resolve(Node $node): array
         }
 
         $constructClassMethod = $classLike->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/nette-code-quality/src/FormControlTypeResolver/VariableConstructorFormControlTypeResolver.php b/rules/nette-code-quality/src/FormControlTypeResolver/VariableConstructorFormControlTypeResolver.php
index 18fba2a513d1..402557ea01de 100644
--- a/rules/nette-code-quality/src/FormControlTypeResolver/VariableConstructorFormControlTypeResolver.php
+++ b/rules/nette-code-quality/src/FormControlTypeResolver/VariableConstructorFormControlTypeResolver.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Stmt\ClassMethod;
 use PHPStan\Type\TypeWithClassName;
 use Rector\Core\ValueObject\MethodName;
 use Rector\NetteCodeQuality\Contract\FormControlTypeResolverInterface;
@@ -74,7 +75,7 @@ public function resolve(Node $node): array
             $formType->getClassName(),
             MethodName::CONSTRUCT
         );
-        if ($constructorClassMethod === null) {
+        if (! $constructorClassMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/nette-code-quality/src/Rector/Class_/MoveInjectToExistingConstructorRector.php b/rules/nette-code-quality/src/Rector/Class_/MoveInjectToExistingConstructorRector.php
index 7e62ab4150be..e19bf90b7a07 100644
--- a/rules/nette-code-quality/src/Rector/Class_/MoveInjectToExistingConstructorRector.php
+++ b/rules/nette-code-quality/src/Rector/Class_/MoveInjectToExistingConstructorRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Property;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\Core\Rector\AbstractRector;
@@ -110,7 +111,7 @@ public function refactor(Node $node): ?Node
         }
 
         $constructClassMethod = $node->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/nette-kdyby/src/Naming/VariableNaming.php b/rules/nette-kdyby/src/Naming/VariableNaming.php
index 44f2279a201b..0a55b85beb92 100644
--- a/rules/nette-kdyby/src/Naming/VariableNaming.php
+++ b/rules/nette-kdyby/src/Naming/VariableNaming.php
@@ -165,7 +165,7 @@ private function resolveBareFromNode(Node $node): ?string
             return $this->resolveFromNode($node->name);
         }
 
-        if ($node === null) {
+        if (! $node instanceof Node) {
             throw new NotImplementedException();
         }
 
@@ -253,7 +253,7 @@ private function resolveFromPropertyFetch(PropertyFetch $propertyFetch): string
 
     private function isCall(?Node $node): bool
     {
-        if ($node === null) {
+        if (! $node instanceof Node) {
             return false;
         }
 
@@ -262,7 +262,7 @@ private function isCall(?Node $node): bool
 
     private function resolveFromMethodCall(?Node $node): ?string
     {
-        if ($node === null) {
+        if (! $node instanceof Node) {
             return null;
         }
 
diff --git a/rules/nette-kdyby/src/NodeResolver/ListeningMethodsCollector.php b/rules/nette-kdyby/src/NodeResolver/ListeningMethodsCollector.php
index 0ee0bdc22b4a..1c16a4817df6 100644
--- a/rules/nette-kdyby/src/NodeResolver/ListeningMethodsCollector.php
+++ b/rules/nette-kdyby/src/NodeResolver/ListeningMethodsCollector.php
@@ -76,7 +76,7 @@ public function collectFromClassAndGetSubscribedEventClassMethod(
             (array) $getSubscribedEventsClassMethod->stmts,
             function (Node $node) use ($classLike, $type) {
                 $classMethod = $this->matchClassMethodByArrayItem($node, $classLike);
-                if ($classMethod === null) {
+                if (! $classMethod instanceof ClassMethod) {
                     return null;
                 }
 
@@ -106,7 +106,7 @@ function (Node $node) use ($classLike, $type) {
                     $eventClass
                 );
 
-                if ($eventClassAndClassMethod === null) {
+                if (! $eventClassAndClassMethod instanceof EventClassAndClassMethod) {
                     return null;
                 }
 
@@ -186,7 +186,7 @@ private function resolveCustomClassMethodAndEventClass(
             );
         }
 
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/nette-kdyby/src/Rector/ClassMethod/AbstractKdybyEventSubscriberRector.php b/rules/nette-kdyby/src/Rector/ClassMethod/AbstractKdybyEventSubscriberRector.php
index 616ff1822b5a..127976dacfcd 100644
--- a/rules/nette-kdyby/src/Rector/ClassMethod/AbstractKdybyEventSubscriberRector.php
+++ b/rules/nette-kdyby/src/Rector/ClassMethod/AbstractKdybyEventSubscriberRector.php
@@ -4,6 +4,7 @@
 
 namespace Rector\NetteKdyby\Rector\ClassMethod;
 
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -13,7 +14,7 @@ abstract class AbstractKdybyEventSubscriberRector extends AbstractRector
     protected function shouldSkipClassMethod(ClassMethod $classMethod): bool
     {
         $classLike = $classMethod->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return true;
         }
 
diff --git a/rules/nette-kdyby/src/Rector/ClassMethod/ReplaceMagicPropertyWithEventClassRector.php b/rules/nette-kdyby/src/Rector/ClassMethod/ReplaceMagicPropertyWithEventClassRector.php
index 74b07b21d1b5..51d7437db03e 100644
--- a/rules/nette-kdyby/src/Rector/ClassMethod/ReplaceMagicPropertyWithEventClassRector.php
+++ b/rules/nette-kdyby/src/Rector/ClassMethod/ReplaceMagicPropertyWithEventClassRector.php
@@ -6,6 +6,7 @@
 
 use Nette\Utils\Strings;
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ArrayItem;
 use PhpParser\Node\Stmt\ClassMethod;
 use Rector\NetteKdyby\DataProvider\EventAndListenerTreeProvider;
@@ -138,7 +139,7 @@ private function replaceEventPropertyReferenceWithEventClassReference(ClassMetho
             }
 
             $arrayKey = $node->key;
-            if ($arrayKey === null) {
+            if (! $arrayKey instanceof Expr) {
                 return null;
             }
 
diff --git a/rules/nette-kdyby/src/Rector/MethodCall/ReplaceMagicPropertyEventWithEventClassRector.php b/rules/nette-kdyby/src/Rector/MethodCall/ReplaceMagicPropertyEventWithEventClassRector.php
index fe264f9338db..5010dc1d954f 100644
--- a/rules/nette-kdyby/src/Rector/MethodCall/ReplaceMagicPropertyEventWithEventClassRector.php
+++ b/rules/nette-kdyby/src/Rector/MethodCall/ReplaceMagicPropertyEventWithEventClassRector.php
@@ -14,6 +14,7 @@
 use Rector\CodingStyle\Naming\ClassNaming;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NetteKdyby\DataProvider\EventAndListenerTreeProvider;
+use Rector\NetteKdyby\ValueObject\EventAndListenerTree;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Rector\StaticTypeMapper\ValueObject\Type\FullyQualifiedObjectType;
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
@@ -100,7 +101,7 @@ public function refactor(Node $node): ?Node
     {
         // 1. is onProperty? call
         $eventAndListenerTree = $this->eventAndListenerTreeProvider->matchMethodCall($node);
-        if ($eventAndListenerTree === null) {
+        if (! $eventAndListenerTree instanceof EventAndListenerTree) {
             return null;
         }
 
diff --git a/rules/nette-tester-to-phpunit/src/Rector/Class_/NetteTesterClassToPHPUnitClassRector.php b/rules/nette-tester-to-phpunit/src/Rector/Class_/NetteTesterClassToPHPUnitClassRector.php
index 78d0aeced187..221869412e94 100644
--- a/rules/nette-tester-to-phpunit/src/Rector/Class_/NetteTesterClassToPHPUnitClassRector.php
+++ b/rules/nette-tester-to-phpunit/src/Rector/Class_/NetteTesterClassToPHPUnitClassRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassLike;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\MethodName;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -101,7 +102,7 @@ public function refactor(Node $node): ?Node
     private function processAboveTestInclude(Include_ $include): void
     {
         $classLike = $include->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             $this->removeNode($include);
         }
     }
diff --git a/rules/nette-to-symfony/src/Collector/OnFormVariableMethodCallsCollector.php b/rules/nette-to-symfony/src/Collector/OnFormVariableMethodCallsCollector.php
index e8711881c7eb..e0b9b60969e9 100644
--- a/rules/nette-to-symfony/src/Collector/OnFormVariableMethodCallsCollector.php
+++ b/rules/nette-to-symfony/src/Collector/OnFormVariableMethodCallsCollector.php
@@ -47,7 +47,7 @@ public function __construct(
     public function collectFromClassMethod(ClassMethod $classMethod): array
     {
         $newFormVariable = $this->resolveNewFormVariable($classMethod);
-        if ($newFormVariable === null) {
+        if (! $newFormVariable instanceof Expr) {
             return [];
         }
 
diff --git a/rules/nette-to-symfony/src/Rector/ClassMethod/RenameEventNamesInEventSubscriberRector.php b/rules/nette-to-symfony/src/Rector/ClassMethod/RenameEventNamesInEventSubscriberRector.php
index 402a630a3164..9325f99dd035 100644
--- a/rules/nette-to-symfony/src/Rector/ClassMethod/RenameEventNamesInEventSubscriberRector.php
+++ b/rules/nette-to-symfony/src/Rector/ClassMethod/RenameEventNamesInEventSubscriberRector.php
@@ -6,11 +6,13 @@
 
 use Composer\Script\Event;
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\Array_;
 use PhpParser\Node\Expr\ArrayItem;
 use PhpParser\Node\Expr\ClassConstFetch;
 use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Return_;
 use Rector\Core\Rector\AbstractRector;
@@ -87,7 +89,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
@@ -125,11 +127,11 @@ private function renameArrayKeys(Return_ $return): void
             }
 
             $eventInfo = $this->matchStringKeys($arrayItem);
-            if ($eventInfo === null) {
+            if (! $eventInfo instanceof EventInfo) {
                 $eventInfo = $this->matchClassConstKeys($arrayItem);
             }
 
-            if ($eventInfo === null) {
+            if (! $eventInfo instanceof EventInfo) {
                 continue;
             }
 
@@ -180,7 +182,7 @@ private function matchClassConstKeys(ArrayItem $arrayItem): ?EventInfo
     private function processMethodArgument(string $class, string $method, EventInfo $eventInfo): void
     {
         $classMethodNode = $this->nodeRepository->findClassMethod($class, $method);
-        if ($classMethodNode === null) {
+        if (! $classMethodNode instanceof \PhpParser\Node\Stmt\ClassMethod) {
             return;
         }
 
@@ -195,7 +197,7 @@ private function resolveClassConstAliasMatch(ArrayItem $arrayItem, EventInfo $ev
     {
         foreach ($eventInfo->getOldClassConstAliases() as $netteClassConst) {
             $classConstFetchNode = $arrayItem->key;
-            if ($classConstFetchNode === null) {
+            if (! $classConstFetchNode instanceof Expr) {
                 continue;
             }
 
diff --git a/rules/nette-to-symfony/src/Rector/ClassMethod/RouterListToControllerAnnotationsRector.php b/rules/nette-to-symfony/src/Rector/ClassMethod/RouterListToControllerAnnotationsRector.php
index 547aa4d15151..49ea323968b8 100644
--- a/rules/nette-to-symfony/src/Rector/ClassMethod/RouterListToControllerAnnotationsRector.php
+++ b/rules/nette-to-symfony/src/Rector/ClassMethod/RouterListToControllerAnnotationsRector.php
@@ -163,7 +163,7 @@ public function refactor(Node $node): ?Node
         /** @var RouteInfo $routeInfo */
         foreach ($routeInfos as $routeInfo) {
             $classMethod = $this->resolveControllerClassMethod($routeInfo);
-            if ($classMethod === null) {
+            if (! $classMethod instanceof \PhpParser\Node\Stmt\ClassMethod) {
                 continue;
             }
 
@@ -225,7 +225,7 @@ private function createRouteInfosFromAssignNodes(array $assignNodes): array
         // collect annotations and target controllers
         foreach ($assignNodes as $assignNode) {
             $routeNameToControllerMethod = $this->routeInfoFactory->createFromNode($assignNode->expr);
-            if ($routeNameToControllerMethod === null) {
+            if (! $routeNameToControllerMethod instanceof \Rector\NetteToSymfony\ValueObject\RouteInfo) {
                 continue;
             }
 
@@ -238,7 +238,7 @@ private function createRouteInfosFromAssignNodes(array $assignNodes): array
     private function resolveControllerClassMethod(RouteInfo $routeInfo): ?ClassMethod
     {
         $classNode = $this->nodeRepository->findClass($routeInfo->getClass());
-        if ($classNode === null) {
+        if (! $classNode instanceof Class_) {
             return null;
         }
 
diff --git a/rules/nette-to-symfony/src/Rector/Class_/FormControlToControllerAndFormTypeRector.php b/rules/nette-to-symfony/src/Rector/Class_/FormControlToControllerAndFormTypeRector.php
index 4421bb5a5dcd..4977aac6597f 100644
--- a/rules/nette-to-symfony/src/Rector/Class_/FormControlToControllerAndFormTypeRector.php
+++ b/rules/nette-to-symfony/src/Rector/Class_/FormControlToControllerAndFormTypeRector.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Param;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Namespace_;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NetteToSymfony\Collector\OnFormVariableMethodCallsCollector;
 use Rector\NetteToSymfony\NodeFactory\BuildFormClassMethodFactory;
@@ -146,12 +147,12 @@ public function refactor(Node $node): ?Node
             }
 
             $formTypeClass = $this->collectFormMethodCallsAndCreateFormTypeClass($classMethod);
-            if ($formTypeClass === null) {
+            if (! $formTypeClass instanceof \PhpParser\Node\Stmt\Class_) {
                 continue;
             }
 
             $symfonyControllerNamespace = $this->symfonyControllerFactory->createNamespace($node, $formTypeClass);
-            if ($symfonyControllerNamespace === null) {
+            if (! $symfonyControllerNamespace instanceof Namespace_) {
                 continue;
             }
 
diff --git a/rules/nette-to-symfony/src/Rector/MethodCall/NetteFormToSymfonyFormRector.php b/rules/nette-to-symfony/src/Rector/MethodCall/NetteFormToSymfonyFormRector.php
index 7832e2ee74fa..8b6e8f591410 100644
--- a/rules/nette-to-symfony/src/Rector/MethodCall/NetteFormToSymfonyFormRector.php
+++ b/rules/nette-to-symfony/src/Rector/MethodCall/NetteFormToSymfonyFormRector.php
@@ -12,6 +12,7 @@
 use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Identifier;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassLike;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -113,7 +114,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/nette-to-symfony/src/Route/RouteInfoFactory.php b/rules/nette-to-symfony/src/Route/RouteInfoFactory.php
index 7dc7b29b15a0..248efc4f8898 100644
--- a/rules/nette-to-symfony/src/Route/RouteInfoFactory.php
+++ b/rules/nette-to-symfony/src/Route/RouteInfoFactory.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Expr\StaticCall;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\Class_;
 use Rector\Core\PhpParser\Node\Value\ValueResolver;
 use Rector\NetteToSymfony\ValueObject\RouteInfo;
 use Rector\NodeCollector\NodeCollector\ParsedNodeCollector;
@@ -163,12 +164,12 @@ private function createForString(String_ $string, string $routePath): ?RouteInfo
         // foreach all instance and try to match a name $controller . 'Presenter/Controller'
 
         $classNode = $this->parsedNodeCollector->findByShortName($controller . 'Presenter');
-        if ($classNode === null) {
+        if (! $classNode instanceof Class_) {
             $classNode = $this->parsedNodeCollector->findByShortName($controller . 'Controller');
         }
 
         // unable to find here
-        if ($classNode === null) {
+        if (! $classNode instanceof Class_) {
             return null;
         }
 
diff --git a/rules/nette/src/Rector/Class_/MoveFinalGetUserToCheckRequirementsClassMethodRector.php b/rules/nette/src/Rector/Class_/MoveFinalGetUserToCheckRequirementsClassMethodRector.php
index a126ccda64ff..8aad29c73a04 100644
--- a/rules/nette/src/Rector/Class_/MoveFinalGetUserToCheckRequirementsClassMethodRector.php
+++ b/rules/nette/src/Rector/Class_/MoveFinalGetUserToCheckRequirementsClassMethodRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\Exception\NotImplementedYetException;
 use Rector\Core\PhpParser\Node\Manipulator\ClassInsertManipulator;
 use Rector\Core\Rector\AbstractRector;
@@ -95,7 +96,7 @@ public function refactor(Node $node): ?Node
         }
 
         $getUserClassMethod = $node->getMethod('getUser');
-        if ($getUserClassMethod === null) {
+        if (! $getUserClassMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/nette/src/Rector/Identical/AbstractWithFunctionToNetteUtilsStringsRector.php b/rules/nette/src/Rector/Identical/AbstractWithFunctionToNetteUtilsStringsRector.php
index d16b200afbc2..b49bae1dea46 100644
--- a/rules/nette/src/Rector/Identical/AbstractWithFunctionToNetteUtilsStringsRector.php
+++ b/rules/nette/src/Rector/Identical/AbstractWithFunctionToNetteUtilsStringsRector.php
@@ -29,7 +29,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $contentExprAndNeedleExpr = $this->resolveContentExprAndNeedleExpr($node);
-        if ($contentExprAndNeedleExpr === null) {
+        if (! $contentExprAndNeedleExpr instanceof ContentExprAndNeedleExpr) {
             return null;
         }
 
diff --git a/rules/nette/src/Rector/MethodCall/AddNextrasDatePickerToDateControlRector.php b/rules/nette/src/Rector/MethodCall/AddNextrasDatePickerToDateControlRector.php
index d0e882ba7cc5..154173581115 100644
--- a/rules/nette/src/Rector/MethodCall/AddNextrasDatePickerToDateControlRector.php
+++ b/rules/nette/src/Rector/MethodCall/AddNextrasDatePickerToDateControlRector.php
@@ -81,7 +81,7 @@ public function refactor(Node $node): ?Node
             }
 
             $assign = $this->createAssign($node->var);
-            if ($assign === null) {
+            if (! $assign instanceof Node) {
                 return null;
             }
 
diff --git a/rules/nette/src/Rector/NotIdentical/StrposToStringsContainsRector.php b/rules/nette/src/Rector/NotIdentical/StrposToStringsContainsRector.php
index 5b2ab6dc4f65..dc4fc0aa68a7 100644
--- a/rules/nette/src/Rector/NotIdentical/StrposToStringsContainsRector.php
+++ b/rules/nette/src/Rector/NotIdentical/StrposToStringsContainsRector.php
@@ -68,7 +68,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $funcCall = $this->matchStrposInComparisonToFalse($node);
-        if ($funcCall === null) {
+        if (! $funcCall instanceof FuncCall) {
             return null;
         }
 
diff --git a/rules/order/src/Rector/Class_/OrderPrivateMethodsByUseRector.php b/rules/order/src/Rector/Class_/OrderPrivateMethodsByUseRector.php
index eaa270a3b162..77dfd4632b13 100644
--- a/rules/order/src/Rector/Class_/OrderPrivateMethodsByUseRector.php
+++ b/rules/order/src/Rector/Class_/OrderPrivateMethodsByUseRector.php
@@ -157,7 +157,7 @@ private function getLocalPrivateMethodCallOrder(ClassLike $classLike): array
             }
 
             $classMethod = $classLike->getMethod($methodName);
-            if ($classMethod === null) {
+            if (! $classMethod instanceof ClassMethod) {
                 return null;
             }
 
diff --git a/rules/php-office/src/Rector/MethodCall/IncreaseColumnIndexRector.php b/rules/php-office/src/Rector/MethodCall/IncreaseColumnIndexRector.php
index 2bf278010b94..adb9ef97da96 100644
--- a/rules/php-office/src/Rector/MethodCall/IncreaseColumnIndexRector.php
+++ b/rules/php-office/src/Rector/MethodCall/IncreaseColumnIndexRector.php
@@ -89,7 +89,7 @@ public function refactor(Node $node): ?Node
         if ($firstArgumentValue instanceof Variable) {
             // check if for() value, rather update that
             $lNumber = $this->findPreviousForWithVariable($firstArgumentValue);
-            if ($lNumber === null) {
+            if (! $lNumber instanceof LNumber) {
                 $node->args[0]->value = new Plus($firstArgumentValue, new LNumber(1));
                 return null;
             }
diff --git a/rules/php-spec-to-phpunit/src/MatchersManipulator.php b/rules/php-spec-to-phpunit/src/MatchersManipulator.php
index 15f8f0401994..8c38fa6feafc 100644
--- a/rules/php-spec-to-phpunit/src/MatchersManipulator.php
+++ b/rules/php-spec-to-phpunit/src/MatchersManipulator.php
@@ -7,6 +7,7 @@
 use PhpParser\Node\Expr\Array_;
 use PhpParser\Node\Scalar\String_;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Return_;
 
 final class MatchersManipulator
@@ -17,7 +18,7 @@ final class MatchersManipulator
     public function resolveMatcherNamesFromClass(Class_ $class): array
     {
         $classMethod = $class->getMethod('getMatchers');
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/rules/php-spec-to-phpunit/src/Rector/AbstractPhpSpecToPHPUnitRector.php b/rules/php-spec-to-phpunit/src/Rector/AbstractPhpSpecToPHPUnitRector.php
index ad329f58ab72..6fd8b9c4caac 100644
--- a/rules/php-spec-to-phpunit/src/Rector/AbstractPhpSpecToPHPUnitRector.php
+++ b/rules/php-spec-to-phpunit/src/Rector/AbstractPhpSpecToPHPUnitRector.php
@@ -5,6 +5,7 @@
 namespace Rector\PhpSpecToPHPUnit\Rector;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -63,7 +64,7 @@ protected function setUp()
     public function isInPhpSpecBehavior(Node $node): bool
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return false;
         }
 
diff --git a/rules/php-spec-to-phpunit/src/Rector/Class_/PhpSpecClassToPHPUnitClassRector.php b/rules/php-spec-to-phpunit/src/Rector/Class_/PhpSpecClassToPHPUnitClassRector.php
index 52a490d4fac2..e608ff81764c 100644
--- a/rules/php-spec-to-phpunit/src/Rector/Class_/PhpSpecClassToPHPUnitClassRector.php
+++ b/rules/php-spec-to-phpunit/src/Rector/Class_/PhpSpecClassToPHPUnitClassRector.php
@@ -97,7 +97,7 @@ public function refactor(Node $node): ?Node
         $classMethod = $node->getMethod('let');
 
         // add let if missing
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             if (! $this->letManipulator->isLetNeededInClass($node)) {
                 return null;
             }
diff --git a/rules/php55/src/Rector/FuncCall/PregReplaceEModifierRector.php b/rules/php55/src/Rector/FuncCall/PregReplaceEModifierRector.php
index 65fff535f005..57cbd8bd501a 100644
--- a/rules/php55/src/Rector/FuncCall/PregReplaceEModifierRector.php
+++ b/rules/php55/src/Rector/FuncCall/PregReplaceEModifierRector.php
@@ -5,6 +5,8 @@
 namespace Rector\Php55\Rector\FuncCall;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Closure;
 use PhpParser\Node\Expr\FuncCall;
 use PhpParser\Node\Name;
 use Rector\Core\Rector\AbstractRector;
@@ -88,7 +90,7 @@ public function refactor(Node $node): ?Node
 
         $firstArgumentValue = $node->args[0]->value;
         $patternWithoutE = $this->regexMatcher->resolvePatternExpressionWithoutEIfFound($firstArgumentValue);
-        if ($patternWithoutE === null) {
+        if (! $patternWithoutE instanceof Expr) {
             return null;
         }
 
@@ -96,7 +98,7 @@ public function refactor(Node $node): ?Node
         $anonymousFunction = $this->anonymousFunctionNodeFactory->createAnonymousFunctionFromString(
             $secondArgumentValue
         );
-        if ($anonymousFunction === null) {
+        if (! $anonymousFunction instanceof Closure) {
             return null;
         }
 
diff --git a/rules/php56/src/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector.php b/rules/php56/src/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector.php
index 6c78ca2a2ee0..83d5ee3c5492 100644
--- a/rules/php56/src/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector.php
+++ b/rules/php56/src/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector.php
@@ -178,7 +178,7 @@ private function collectDefinedVariablesFromForeach(Foreach_ $foreach): void
     private function shouldSkipVariable(Variable $variable): bool
     {
         $parentNode = $variable->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parentNode === null) {
+        if (! $parentNode instanceof Node) {
             return true;
         }
 
diff --git a/rules/php70/src/Rector/ClassMethod/Php4ConstructorRector.php b/rules/php70/src/Rector/ClassMethod/Php4ConstructorRector.php
index e5ec48febe87..29c7d279c01f 100644
--- a/rules/php70/src/Rector/ClassMethod/Php4ConstructorRector.php
+++ b/rules/php70/src/Rector/ClassMethod/Php4ConstructorRector.php
@@ -83,7 +83,7 @@ public function refactor(Node $node): ?Node
         $classMethod = $classLike->getMethod(MethodName::CONSTRUCT);
 
         // does it already have a __construct method?
-        if ($classMethod === null) {
+        if (! $classMethod instanceof \PhpParser\Node\Stmt\ClassMethod) {
             $node->name = new Identifier(MethodName::CONSTRUCT);
         }
 
diff --git a/rules/php70/src/Rector/FuncCall/NonVariableToVariableOnFunctionCallRector.php b/rules/php70/src/Rector/FuncCall/NonVariableToVariableOnFunctionCallRector.php
index 4102e30f83bd..4ce68372f4db 100644
--- a/rules/php70/src/Rector/FuncCall/NonVariableToVariableOnFunctionCallRector.php
+++ b/rules/php70/src/Rector/FuncCall/NonVariableToVariableOnFunctionCallRector.php
@@ -20,6 +20,7 @@
 use PHPStan\Analyser\MutatingScope;
 use PHPStan\Analyser\Scope;
 use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
 use PHPStan\Type\MixedType;
 use Rector\Core\PHPStan\Reflection\CallReflectionResolver;
 use Rector\Core\Rector\AbstractRector;
@@ -137,7 +138,7 @@ private function getNonVariableArguments(Node $node): array
             $node
         );
 
-        if ($parametersAcceptor === null) {
+        if (! $parametersAcceptor instanceof ParametersAcceptor) {
             return [];
         }
 
diff --git a/rules/php70/src/Rector/StaticCall/StaticCallOnNonStaticToInstanceCallRector.php b/rules/php70/src/Rector/StaticCall/StaticCallOnNonStaticToInstanceCallRector.php
index 470eb9b32401..09b1c21047e4 100644
--- a/rules/php70/src/Rector/StaticCall/StaticCallOnNonStaticToInstanceCallRector.php
+++ b/rules/php70/src/Rector/StaticCall/StaticCallOnNonStaticToInstanceCallRector.php
@@ -10,12 +10,14 @@
 use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Stmt\ClassMethod;
 use PHPStan\Type\ObjectType;
 use Rector\Core\PhpParser\Node\Manipulator\ClassMethodManipulator;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeCollector\StaticAnalyzer;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use ReflectionClass;
+use ReflectionMethod;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -128,7 +130,7 @@ public function refactor(Node $node): ?Node
 
         // can we add static to method?
         $classMethodNode = $this->nodeRepository->findClassMethod($className, $methodName);
-        if ($classMethodNode === null) {
+        if (! $classMethodNode instanceof ClassMethod) {
             return null;
         }
 
@@ -177,7 +179,7 @@ private function isInstantiable(string $className): bool
         $reflectionClass = new ReflectionClass($className);
         $classConstructorReflection = $reflectionClass->getConstructor();
 
-        if ($classConstructorReflection === null) {
+        if (! $classConstructorReflection instanceof ReflectionMethod) {
             return true;
         }
 
diff --git a/rules/php70/src/Rector/Ternary/TernaryToNullCoalescingRector.php b/rules/php70/src/Rector/Ternary/TernaryToNullCoalescingRector.php
index eab62352a343..863e971732cc 100644
--- a/rules/php70/src/Rector/Ternary/TernaryToNullCoalescingRector.php
+++ b/rules/php70/src/Rector/Ternary/TernaryToNullCoalescingRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Php70\Rector\Ternary;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\BinaryOp\Coalesce;
 use PhpParser\Node\Expr\BinaryOp\Identical;
 use PhpParser\Node\Expr\BinaryOp\NotIdentical;
@@ -65,7 +66,7 @@ public function refactor(Node $node): ?Node
         if ($checkedNode === null) {
             return null;
         }
-        if ($fallbackNode === null) {
+        if (! $fallbackNode instanceof Expr) {
             return null;
         }
 
diff --git a/rules/php71/src/IsArrayAndDualCheckToAble.php b/rules/php71/src/IsArrayAndDualCheckToAble.php
index 3d12a857e924..0aa0b244fb97 100644
--- a/rules/php71/src/IsArrayAndDualCheckToAble.php
+++ b/rules/php71/src/IsArrayAndDualCheckToAble.php
@@ -13,6 +13,7 @@
 use PhpParser\Node\Name;
 use Rector\Core\PhpParser\Node\Manipulator\BinaryOpManipulator;
 use Rector\NodeNameResolver\NodeNameResolver;
+use Rector\Php71\ValueObject\TwoNodeMatch;
 
 final class IsArrayAndDualCheckToAble
 {
@@ -40,7 +41,7 @@ public function processBooleanOr(BooleanOr $booleanOr, string $type, string $new
             FuncCall::class
         );
 
-        if ($twoNodeMatch === null) {
+        if (! $twoNodeMatch instanceof TwoNodeMatch) {
             return null;
         }
 
diff --git a/rules/php71/src/Rector/FuncCall/RemoveExtraParametersRector.php b/rules/php71/src/Rector/FuncCall/RemoveExtraParametersRector.php
index f783a7f28c8d..0daa2641e668 100644
--- a/rules/php71/src/Rector/FuncCall/RemoveExtraParametersRector.php
+++ b/rules/php71/src/Rector/FuncCall/RemoveExtraParametersRector.php
@@ -104,7 +104,7 @@ private function shouldSkip(Node $node): bool
             $this->callReflectionResolver->resolveCall($node),
             $node
         );
-        if ($parametersAcceptor === null) {
+        if (! $parametersAcceptor instanceof \PHPStan\Reflection\ParametersAcceptor) {
             return true;
         }
 
diff --git a/rules/php73/src/Rector/FuncCall/ArrayKeyFirstLastRector.php b/rules/php73/src/Rector/FuncCall/ArrayKeyFirstLastRector.php
index a86ddd451898..8d39087b3523 100644
--- a/rules/php73/src/Rector/FuncCall/ArrayKeyFirstLastRector.php
+++ b/rules/php73/src/Rector/FuncCall/ArrayKeyFirstLastRector.php
@@ -87,7 +87,7 @@ public function refactor(Node $node): ?Node
         }
 
         $nextExpression = $this->getNextExpression($node);
-        if ($nextExpression === null) {
+        if (! $nextExpression instanceof Node) {
             return null;
         }
 
diff --git a/rules/php74/src/Rector/MethodCall/ChangeReflectionTypeToStringToGetNameRector.php b/rules/php74/src/Rector/MethodCall/ChangeReflectionTypeToStringToGetNameRector.php
index b66111fe2102..6837b7189645 100644
--- a/rules/php74/src/Rector/MethodCall/ChangeReflectionTypeToStringToGetNameRector.php
+++ b/rules/php74/src/Rector/MethodCall/ChangeReflectionTypeToStringToGetNameRector.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Expr\Ternary;
 use PhpParser\Node\Expr\Variable;
+use PHPStan\Analyser\Scope;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -164,7 +165,7 @@ private function shouldSkipMethodCall(MethodCall $methodCall): bool
     {
         $scope = $methodCall->getAttribute(AttributeKey::SCOPE);
         // just added node → skip it
-        if ($scope === null) {
+        if (! $scope instanceof Scope) {
             return true;
         }
 
diff --git a/rules/php80/src/NodeManipulator/TokenManipulator.php b/rules/php80/src/NodeManipulator/TokenManipulator.php
index f8f14126a940..feaec58a03d1 100644
--- a/rules/php80/src/NodeManipulator/TokenManipulator.php
+++ b/rules/php80/src/NodeManipulator/TokenManipulator.php
@@ -176,7 +176,7 @@ public function refactorTokenIsKind(array $nodes, Expr $singleTokenExpr): void
             }
 
             $arrayDimFetchAndConstFetch = $this->matchArrayDimFetchAndConstFetch($node);
-            if ($arrayDimFetchAndConstFetch === null) {
+            if (! $arrayDimFetchAndConstFetch instanceof ArrayDimFetchAndConstFetch) {
                 return null;
             }
 
diff --git a/rules/php80/src/NodeResolver/PromotedPropertyResolver.php b/rules/php80/src/NodeResolver/PromotedPropertyResolver.php
index 23d5189dc07b..306f5f767fb5 100644
--- a/rules/php80/src/NodeResolver/PromotedPropertyResolver.php
+++ b/rules/php80/src/NodeResolver/PromotedPropertyResolver.php
@@ -51,7 +51,7 @@ public function __construct(
     public function resolveFromClass(Class_ $class): array
     {
         $constructClassMethod = $class->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return [];
         }
 
@@ -62,7 +62,7 @@ public function resolveFromClass(Class_ $class): array
             }
 
             $propertyPromotionCandidate = $this->matchPropertyPromotionCandidate($property, $constructClassMethod);
-            if ($propertyPromotionCandidate === null) {
+            if (! $propertyPromotionCandidate instanceof PropertyPromotionCandidate) {
                 continue;
             }
 
@@ -106,7 +106,7 @@ private function matchPropertyPromotionCandidate(
             }
 
             $matchedParam = $this->matchClassMethodParamByAssignedVariable($constructClassMethod, $assignedExpr);
-            if ($matchedParam === null) {
+            if (! $matchedParam instanceof Param) {
                 continue;
             }
 
@@ -155,7 +155,7 @@ private function resolveFirstParamUses(ClassMethod $classMethod): array
                 return $this->nodeNameResolver->isName($node, $paramName);
             });
 
-            if ($firstParamVariable === null) {
+            if (! $firstParamVariable instanceof Node) {
                 continue;
             }
 
diff --git a/rules/php80/src/NodeResolver/SwitchExprsResolver.php b/rules/php80/src/NodeResolver/SwitchExprsResolver.php
index 8c089a843bb7..9baf9cb4a9f4 100644
--- a/rules/php80/src/NodeResolver/SwitchExprsResolver.php
+++ b/rules/php80/src/NodeResolver/SwitchExprsResolver.php
@@ -32,7 +32,7 @@ public function resolve(Switch_ $switch): array
 
             if ($expr instanceof Return_) {
                 $returnedExpr = $expr->expr;
-                if ($returnedExpr === null) {
+                if (! $returnedExpr instanceof Expr) {
                     return [];
                 }
                 $condAndExpr[] = new CondAndExpr($case->cond, $returnedExpr, CondAndExpr::TYPE_RETURN);
diff --git a/rules/php80/src/Rector/Catch_/RemoveUnusedVariableInCatchRector.php b/rules/php80/src/Rector/Catch_/RemoveUnusedVariableInCatchRector.php
index 2b4ddafb1ce5..b1dc99a7604a 100644
--- a/rules/php80/src/Rector/Catch_/RemoveUnusedVariableInCatchRector.php
+++ b/rules/php80/src/Rector/Catch_/RemoveUnusedVariableInCatchRector.php
@@ -63,7 +63,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $caughtVar = $node->var;
-        if ($caughtVar === null) {
+        if (! $caughtVar instanceof Variable) {
             return null;
         }
 
diff --git a/rules/php80/src/Rector/Class_/ClassPropertyAssignToConstructorPromotionRector.php b/rules/php80/src/Rector/Class_/ClassPropertyAssignToConstructorPromotionRector.php
index 7cdcb2d3ca2a..0d043c0db1d7 100644
--- a/rules/php80/src/Rector/Class_/ClassPropertyAssignToConstructorPromotionRector.php
+++ b/rules/php80/src/Rector/Class_/ClassPropertyAssignToConstructorPromotionRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Property;
+use PHPStan\PhpDocParser\Ast\PhpDoc\ParamTagValueNode;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\MethodName;
@@ -162,7 +163,7 @@ private function removeClassMethodParam(ClassMethod $classMethod, string $paramN
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($classMethod);
 
         $attributeAwareParamTagValueNode = $phpDocInfo->getParamTagValueByName($paramName);
-        if ($attributeAwareParamTagValueNode === null) {
+        if (! $attributeAwareParamTagValueNode instanceof ParamTagValueNode) {
             return;
         }
 
diff --git a/rules/php80/src/Rector/Class_/StringableForToStringRector.php b/rules/php80/src/Rector/Class_/StringableForToStringRector.php
index dead5c3397c4..1e6750b64ef4 100644
--- a/rules/php80/src/Rector/Class_/StringableForToStringRector.php
+++ b/rules/php80/src/Rector/Class_/StringableForToStringRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Name;
 use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\PhpParser\Node\Manipulator\ClassManipulator;
 use Rector\Core\Rector\AbstractRector;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -79,7 +80,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $toStringClassMethod = $node->getMethod('__toString');
-        if ($toStringClassMethod === null) {
+        if (! $toStringClassMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/php80/src/Rector/Identical/StrStartsWithRector.php b/rules/php80/src/Rector/Identical/StrStartsWithRector.php
index 9d85befbb0ad..0f90d5a18f97 100644
--- a/rules/php80/src/Rector/Identical/StrStartsWithRector.php
+++ b/rules/php80/src/Rector/Identical/StrStartsWithRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Expr\BinaryOp\NotIdentical;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Php80\Contract\StrStartWithMatchAndRefactorInterface;
+use Rector\Php80\ValueObject\StrStartsWith;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -84,7 +85,7 @@ public function refactor(Node $node): ?Node
     {
         foreach ($this->strStartWithMatchAndRefactors as $strStartWithMatchAndRefactor) {
             $strStartsWithValueObject = $strStartWithMatchAndRefactor->match($node);
-            if ($strStartsWithValueObject === null) {
+            if (! $strStartsWithValueObject instanceof StrStartsWith) {
                 continue;
             }
 
diff --git a/rules/php80/src/Rector/If_/NullsafeOperatorRector.php b/rules/php80/src/Rector/If_/NullsafeOperatorRector.php
index 6f97b96a9dd7..7726d233f372 100644
--- a/rules/php80/src/Rector/If_/NullsafeOperatorRector.php
+++ b/rules/php80/src/Rector/If_/NullsafeOperatorRector.php
@@ -111,18 +111,18 @@ public function refactor(Node $node): ?Node
     private function processNullSafeOperatorIdentical(If_ $if, bool $isStartIf = true): ?Node
     {
         $comparedNode = $this->ifManipulator->matchIfValueReturnValue($if);
-        if ($comparedNode === null) {
+        if (! $comparedNode instanceof \PhpParser\Node\Expr) {
             return null;
         }
 
         $prevNode = $if->getAttribute(AttributeKey::PREVIOUS_NODE);
         $nextNode = $if->getAttribute(AttributeKey::NEXT_NODE);
 
-        if ($prevNode === null) {
+        if (! $prevNode instanceof \PhpParser\Node) {
             return null;
         }
 
-        if ($nextNode === null) {
+        if (! $nextNode instanceof \PhpParser\Node) {
             return null;
         }
 
@@ -145,7 +145,7 @@ private function processNullSafeOperatorIdentical(If_ $if, bool $isStartIf = tru
     private function processNullSafeOperatorNotIdentical(If_ $if, ?Expr $expr = null): ?Node
     {
         $assign = $this->ifManipulator->matchIfNotNullNextAssignment($if);
-        if ($assign === null) {
+        if (! $assign instanceof Assign) {
             return null;
         }
 
diff --git a/rules/php80/src/Rector/NotIdentical/StrContainsRector.php b/rules/php80/src/Rector/NotIdentical/StrContainsRector.php
index afa90a1283c6..e318a832609b 100644
--- a/rules/php80/src/Rector/NotIdentical/StrContainsRector.php
+++ b/rules/php80/src/Rector/NotIdentical/StrContainsRector.php
@@ -70,7 +70,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $funcCall = $this->matchNotIdenticalToFalse($node);
-        if ($funcCall === null) {
+        if (! $funcCall instanceof FuncCall) {
             return null;
         }
 
diff --git a/rules/php80/src/Rector/Switch_/ChangeSwitchToMatchRector.php b/rules/php80/src/Rector/Switch_/ChangeSwitchToMatchRector.php
index 1502a6ca3417..ef0aca73c529 100644
--- a/rules/php80/src/Rector/Switch_/ChangeSwitchToMatchRector.php
+++ b/rules/php80/src/Rector/Switch_/ChangeSwitchToMatchRector.php
@@ -191,7 +191,7 @@ private function createMatchArmsFromCases(array $condAndExprs): array
 
             $condExpr = $condAndExpr->getCondExpr();
 
-            $condList = $condExpr === null ? null : [$condExpr];
+            $condList = $condExpr instanceof Expr ? [$condExpr] : null;
             $matchArms[] = new MatchArm($condList, $expr);
         }
 
diff --git a/rules/phpunit-symfony/src/Rector/StaticCall/AddMessageToEqualsResponseCodeRector.php b/rules/phpunit-symfony/src/Rector/StaticCall/AddMessageToEqualsResponseCodeRector.php
index 14cc38391cec..78738ccb1968 100644
--- a/rules/phpunit-symfony/src/Rector/StaticCall/AddMessageToEqualsResponseCodeRector.php
+++ b/rules/phpunit-symfony/src/Rector/StaticCall/AddMessageToEqualsResponseCodeRector.php
@@ -90,7 +90,7 @@ public function refactor(Node $node): ?Node
         }
 
         $parentVariable = $this->getParentOfGetStatusCode($node->args[1]->value);
-        if ($parentVariable === null) {
+        if (! $parentVariable instanceof Expr) {
             return null;
         }
 
diff --git a/rules/phpunit/src/NodeAnalyzer/TestsNodeAnalyzer.php b/rules/phpunit/src/NodeAnalyzer/TestsNodeAnalyzer.php
index f81418299e0b..cd1b3808de08 100644
--- a/rules/phpunit/src/NodeAnalyzer/TestsNodeAnalyzer.php
+++ b/rules/phpunit/src/NodeAnalyzer/TestsNodeAnalyzer.php
@@ -5,6 +5,7 @@
 namespace Rector\PHPUnit\NodeAnalyzer;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Rector\NodeTypeResolver\NodeTypeResolver;
 
@@ -23,7 +24,7 @@ public function __construct(NodeTypeResolver $nodeTypeResolver)
     public function isInTestClass(Node $node): bool
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return false;
         }
 
diff --git a/rules/phpunit/src/Rector/ClassMethod/AddDoesNotPerformAssertionToNonAssertingTestRector.php b/rules/phpunit/src/Rector/ClassMethod/AddDoesNotPerformAssertionToNonAssertingTestRector.php
index 245162ed3ae7..808d358efd2e 100644
--- a/rules/phpunit/src/Rector/ClassMethod/AddDoesNotPerformAssertionToNonAssertingTestRector.php
+++ b/rules/phpunit/src/Rector/ClassMethod/AddDoesNotPerformAssertionToNonAssertingTestRector.php
@@ -12,6 +12,7 @@
 use Rector\Core\Reflection\ClassMethodReflectionFactory;
 use Rector\FileSystemRector\Parser\FileInfoParser;
 use Rector\NodeTypeResolver\PhpDoc\NodeAnalyzer\DocBlockManipulator;
+use ReflectionMethod;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 use Symplify\SmartFileSystem\SmartFileInfo;
@@ -279,7 +280,7 @@ private function findClassMethodByParsingReflection(Node $node): ?ClassMethod
             $methodName
         );
 
-        if ($reflectionMethod === null) {
+        if (! $reflectionMethod instanceof ReflectionMethod) {
             return null;
         }
 
diff --git a/rules/phpunit/src/Rector/ClassMethod/TryCatchToExpectExceptionRector.php b/rules/phpunit/src/Rector/ClassMethod/TryCatchToExpectExceptionRector.php
index abff74dc9524..da1703aef0bf 100644
--- a/rules/phpunit/src/Rector/ClassMethod/TryCatchToExpectExceptionRector.php
+++ b/rules/phpunit/src/Rector/ClassMethod/TryCatchToExpectExceptionRector.php
@@ -101,7 +101,7 @@ private function processTryCatch(TryCatch $tryCatch): ?array
         $this->newExpressions = [];
 
         $exceptionVariable = $tryCatch->catches[0]->var;
-        if ($exceptionVariable === null) {
+        if (! $exceptionVariable instanceof Variable) {
             return null;
         }
 
diff --git a/rules/phpunit/src/Rector/Class_/ArrayArgumentInTestToDataProviderRector.php b/rules/phpunit/src/Rector/Class_/ArrayArgumentInTestToDataProviderRector.php
index 8c1bbccf222a..40a325be0add 100644
--- a/rules/phpunit/src/Rector/Class_/ArrayArgumentInTestToDataProviderRector.php
+++ b/rules/phpunit/src/Rector/Class_/ArrayArgumentInTestToDataProviderRector.php
@@ -15,6 +15,7 @@
 use PHPStan\PhpDocParser\Ast\PhpDoc\GenericTagValueNode;
 use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocTagNode;
 use PHPStan\PhpDocParser\Ast\Type\TypeNode;
+use PHPStan\Type\Type;
 use PHPStan\Type\UnionType;
 use Rector\AttributeAwarePhpDoc\Ast\PhpDoc\AttributeAwareParamTagValueNode;
 use Rector\AttributeAwarePhpDoc\Ast\PhpDoc\AttributeAwarePhpDocTagNode;
@@ -320,7 +321,7 @@ private function createParamTagNode(string $name, TypeNode $typeNode): Attribute
     private function setTypeIfNotNull(ParamAndArg $paramAndArg, Param $param): void
     {
         $staticType = $paramAndArg->getType();
-        if ($staticType === null) {
+        if (! $staticType instanceof Type) {
             return;
         }
 
diff --git a/rules/phpunit/src/Rector/Class_/ConstructClassMethodToSetUpTestCaseRector.php b/rules/phpunit/src/Rector/Class_/ConstructClassMethodToSetUpTestCaseRector.php
index 120c9e83411e..56c9dd83a176 100644
--- a/rules/phpunit/src/Rector/Class_/ConstructClassMethodToSetUpTestCaseRector.php
+++ b/rules/phpunit/src/Rector/Class_/ConstructClassMethodToSetUpTestCaseRector.php
@@ -102,7 +102,7 @@ public function refactor(Node $node): ?Node
         }
 
         $constructClassMethod = $node->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/phpunit/src/Rector/MethodCall/WithConsecutiveArgToArrayRector.php b/rules/phpunit/src/Rector/MethodCall/WithConsecutiveArgToArrayRector.php
index 8bbbdbcfd4c0..ceea2f61a2bb 100644
--- a/rules/phpunit/src/Rector/MethodCall/WithConsecutiveArgToArrayRector.php
+++ b/rules/phpunit/src/Rector/MethodCall/WithConsecutiveArgToArrayRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Scalar\String_;
@@ -158,13 +159,13 @@ private function areAllArgArrayTypes(MethodCall $methodCall): bool
     private function inferMockedClassName(MethodCall $methodCall): ?string
     {
         $variable = $this->findRootVariableOfChainCall($methodCall);
-        if ($variable === null) {
+        if (! $variable instanceof Variable) {
             return null;
         }
 
         // look for "$this->createMock(X)"
         $assignToVariable = $this->methodCallManipulator->findAssignToVariable($variable);
-        if ($assignToVariable === null) {
+        if (! $assignToVariable instanceof Assign) {
             return null;
         }
 
diff --git a/rules/polyfill/src/ConditionResolver.php b/rules/polyfill/src/ConditionResolver.php
index 51abb6b07f76..2ab64769de22 100644
--- a/rules/polyfill/src/ConditionResolver.php
+++ b/rules/polyfill/src/ConditionResolver.php
@@ -77,7 +77,7 @@ public function resolveFromExpr(Expr $expr): ?ConditionInterface
             $funcCall = $expr->right;
 
             $versionCompareCondition = $this->resolveVersionCompareConditionForFuncCall($funcCall);
-            if ($versionCompareCondition === null) {
+            if (! $versionCompareCondition instanceof VersionCompareCondition) {
                 return null;
             }
 
@@ -125,7 +125,7 @@ private function resolveFuncCall(
         string $binaryClass
     ): ?BinaryToVersionCompareCondition {
         $versionCompareCondition = $this->resolveVersionCompareConditionForFuncCall($funcCall);
-        if ($versionCompareCondition === null) {
+        if (! $versionCompareCondition instanceof VersionCompareCondition) {
             return null;
         }
 
diff --git a/rules/polyfill/src/Rector/If_/UnwrapFutureCompatibleIfPhpVersionRector.php b/rules/polyfill/src/Rector/If_/UnwrapFutureCompatibleIfPhpVersionRector.php
index 68701e674c9b..2abc1045d02b 100644
--- a/rules/polyfill/src/Rector/If_/UnwrapFutureCompatibleIfPhpVersionRector.php
+++ b/rules/polyfill/src/Rector/If_/UnwrapFutureCompatibleIfPhpVersionRector.php
@@ -9,6 +9,7 @@
 use Rector\Core\Rector\AbstractRector;
 use Rector\Polyfill\ConditionEvaluator;
 use Rector\Polyfill\ConditionResolver;
+use Rector\Polyfill\Contract\ConditionInterface;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -77,7 +78,7 @@ public function refactor(Node $node): ?Node
         }
 
         $condition = $this->conditionResolver->resolveFromExpr($node->cond);
-        if ($condition === null) {
+        if (! $condition instanceof ConditionInterface) {
             return null;
         }
 
diff --git a/rules/privatization/src/NodeAnalyzer/ClassMethodExternalCallNodeAnalyzer.php b/rules/privatization/src/NodeAnalyzer/ClassMethodExternalCallNodeAnalyzer.php
index 0b0d388f7ab0..75f76dc4f532 100644
--- a/rules/privatization/src/NodeAnalyzer/ClassMethodExternalCallNodeAnalyzer.php
+++ b/rules/privatization/src/NodeAnalyzer/ClassMethodExternalCallNodeAnalyzer.php
@@ -131,7 +131,7 @@ private function isEventSubscriberMethod(ClassMethod $classMethod, string $metho
         }
 
         $getSubscribedEventsClassMethod = $classLike->getMethod('getSubscribedEvents');
-        if ($getSubscribedEventsClassMethod === null) {
+        if (! $getSubscribedEventsClassMethod instanceof ClassMethod) {
             return false;
         }
 
diff --git a/rules/privatization/src/NodeFinder/ParentClassConstantNodeFinder.php b/rules/privatization/src/NodeFinder/ParentClassConstantNodeFinder.php
index ff46497d8be3..f38b2401d38e 100644
--- a/rules/privatization/src/NodeFinder/ParentClassConstantNodeFinder.php
+++ b/rules/privatization/src/NodeFinder/ParentClassConstantNodeFinder.php
@@ -4,6 +4,7 @@
 
 namespace Rector\Privatization\NodeFinder;
 
+use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassConst;
 use Rector\NodeCollector\NodeCollector\ParsedNodeCollector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -23,7 +24,7 @@ public function __construct(ParsedNodeCollector $parsedNodeCollector)
     public function find(string $class, string $constant): ?ClassConst
     {
         $classNode = $this->parsedNodeCollector->findClass($class);
-        if ($classNode === null) {
+        if (! $classNode instanceof Class_) {
             return null;
         }
 
diff --git a/rules/privatization/src/NodeReplacer/PropertyFetchWithVariableReplacer.php b/rules/privatization/src/NodeReplacer/PropertyFetchWithVariableReplacer.php
index 94454703d47e..dd46023aab63 100644
--- a/rules/privatization/src/NodeReplacer/PropertyFetchWithVariableReplacer.php
+++ b/rules/privatization/src/NodeReplacer/PropertyFetchWithVariableReplacer.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\NodeNameResolver\NodeNameResolver;
 use Symplify\Astral\NodeTraverser\SimpleCallableNodeTraverser;
 
@@ -39,7 +40,7 @@ public function replacePropertyFetchesByVariable(Class_ $class, array $methodsBy
         foreach ($methodsByPropertyName as $propertyName => $methodNames) {
             $methodName = $methodNames[0];
             $classMethod = $class->getMethod($methodName);
-            if ($classMethod === null) {
+            if (! $classMethod instanceof ClassMethod) {
                 continue;
             }
 
diff --git a/rules/privatization/src/Rector/ClassConst/PrivatizeLocalClassConstantRector.php b/rules/privatization/src/Rector/ClassConst/PrivatizeLocalClassConstantRector.php
index eb1caedeb2ee..ac6e0d1a7653 100644
--- a/rules/privatization/src/Rector/ClassConst/PrivatizeLocalClassConstantRector.php
+++ b/rules/privatization/src/Rector/ClassConst/PrivatizeLocalClassConstantRector.php
@@ -14,6 +14,7 @@
 use Rector\Privatization\NodeFinder\ParentClassConstantNodeFinder;
 use Rector\Privatization\Reflection\ParentConstantReflectionResolver;
 use Rector\Privatization\ValueObject\ConstantVisibility;
+use ReflectionClassConstant;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -176,7 +177,7 @@ private function findParentClassConstantAndRefactorIfPossible(string $class, str
         }
 
         $parentClassConstantReflection = $this->parentConstantReflectionResolver->resolve($class, $constant);
-        if ($parentClassConstantReflection === null) {
+        if (! $parentClassConstantReflection instanceof ReflectionClassConstant) {
             return null;
         }
 
diff --git a/rules/privatization/src/Rector/Class_/ChangeReadOnlyVariableWithDefaultValueToConstantRector.php b/rules/privatization/src/Rector/Class_/ChangeReadOnlyVariableWithDefaultValueToConstantRector.php
index 10553257b08c..8a7624974a8f 100644
--- a/rules/privatization/src/Rector/Class_/ChangeReadOnlyVariableWithDefaultValueToConstantRector.php
+++ b/rules/privatization/src/Rector/Class_/ChangeReadOnlyVariableWithDefaultValueToConstantRector.php
@@ -119,7 +119,7 @@ public function refactor(Node $node): ?Node
             }
 
             $classMethod = $node->getMethod($methodName);
-            if ($classMethod === null) {
+            if (! $classMethod instanceof ClassMethod) {
                 throw new ShouldNotHappenException();
             }
 
diff --git a/rules/privatization/src/Rector/MethodCall/ReplaceStringWithClassConstantRector.php b/rules/privatization/src/Rector/MethodCall/ReplaceStringWithClassConstantRector.php
index 04b144dcad98..58c366349f66 100644
--- a/rules/privatization/src/Rector/MethodCall/ReplaceStringWithClassConstantRector.php
+++ b/rules/privatization/src/Rector/MethodCall/ReplaceStringWithClassConstantRector.php
@@ -94,7 +94,7 @@ public function refactor(Node $node): ?Node
 
         foreach ($this->replaceStringWithClassConstants as $replaceStringWithClassConstant) {
             $desiredArg = $this->matchArg($node, $replaceStringWithClassConstant);
-            if ($desiredArg === null) {
+            if (! $desiredArg instanceof Arg) {
                 continue;
             }
 
@@ -103,7 +103,7 @@ public function refactor(Node $node): ?Node
                 $replaceStringWithClassConstant->getClassWithConstants()
             );
 
-            if ($classConstFetch === null) {
+            if (! $classConstFetch instanceof ClassConstFetch) {
                 continue;
             }
 
@@ -139,7 +139,7 @@ private function matchArg(
         }
 
         $desiredArg = $methodCall->args[$replaceStringWithClassConstant->getArgPosition()] ?? null;
-        if ($desiredArg === null) {
+        if (! $desiredArg instanceof Arg) {
             return null;
         }
 
diff --git a/rules/privatization/src/Rector/Property/PrivatizeLocalPropertyToPrivatePropertyRector.php b/rules/privatization/src/Rector/Property/PrivatizeLocalPropertyToPrivatePropertyRector.php
index 7610b92bd18c..07ea7966b932 100644
--- a/rules/privatization/src/Rector/Property/PrivatizeLocalPropertyToPrivatePropertyRector.php
+++ b/rules/privatization/src/Rector/Property/PrivatizeLocalPropertyToPrivatePropertyRector.php
@@ -116,7 +116,7 @@ public function refactor(Node $node): ?Node
     private function shouldSkip(Property $property): bool
     {
         $classLike = $property->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return true;
         }
 
diff --git a/rules/psr4/src/Composer/PSR4NamespaceMatcher.php b/rules/psr4/src/Composer/PSR4NamespaceMatcher.php
index c00cbfe28a95..729192a00595 100644
--- a/rules/psr4/src/Composer/PSR4NamespaceMatcher.php
+++ b/rules/psr4/src/Composer/PSR4NamespaceMatcher.php
@@ -34,7 +34,7 @@ public function __construct(
     public function getExpectedNamespace(Node $node): ?string
     {
         $smartFileInfo = $this->currentFileInfoProvider->getSmartFileInfo();
-        if ($smartFileInfo === null) {
+        if (! $smartFileInfo instanceof SmartFileInfo) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/rules/removing-static/src/Rector/ClassMethod/LocallyCalledStaticMethodToNonStaticRector.php b/rules/removing-static/src/Rector/ClassMethod/LocallyCalledStaticMethodToNonStaticRector.php
index 51566d2fae4f..c9bedce13d81 100644
--- a/rules/removing-static/src/Rector/ClassMethod/LocallyCalledStaticMethodToNonStaticRector.php
+++ b/rules/removing-static/src/Rector/ClassMethod/LocallyCalledStaticMethodToNonStaticRector.php
@@ -98,7 +98,7 @@ private function refactorClassMethod(ClassMethod $classMethod): ?ClassMethod
     private function refactorStaticCall(StaticCall $staticCall): ?MethodCall
     {
         $classMethod = $this->nodeRepository->findClassMethodByStaticCall($staticCall);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return null;
         }
 
diff --git a/rules/removing-static/src/Rector/Class_/DesiredClassTypeToDynamicRector.php b/rules/removing-static/src/Rector/Class_/DesiredClassTypeToDynamicRector.php
index 3e1029fcfe35..95abf50c1866 100644
--- a/rules/removing-static/src/Rector/Class_/DesiredClassTypeToDynamicRector.php
+++ b/rules/removing-static/src/Rector/Class_/DesiredClassTypeToDynamicRector.php
@@ -150,7 +150,7 @@ public function refactor(Node $node): ?Node
     private function completeDependencyToConstructorOnly(Class_ $class, string $classType): void
     {
         $constructClassMethod = $class->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return;
         }
 
diff --git a/rules/renaming/src/NodeManipulator/ClassRenamer.php b/rules/renaming/src/NodeManipulator/ClassRenamer.php
index 481788ff39cf..73519d642101 100644
--- a/rules/renaming/src/NodeManipulator/ClassRenamer.php
+++ b/rules/renaming/src/NodeManipulator/ClassRenamer.php
@@ -172,7 +172,7 @@ private function refactorNamespace(Namespace_ $namespace, array $oldToNewClasses
         }
 
         $classLike = $this->getClassOfNamespaceToRefactor($namespace, $oldToNewClasses);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/renaming/src/Rector/Namespace_/RenameNamespaceRector.php b/rules/renaming/src/Rector/Namespace_/RenameNamespaceRector.php
index aa5993a79df8..0e6e6b07432d 100644
--- a/rules/renaming/src/Rector/Namespace_/RenameNamespaceRector.php
+++ b/rules/renaming/src/Rector/Namespace_/RenameNamespaceRector.php
@@ -78,7 +78,7 @@ public function refactor(Node $node): ?Node
         }
 
         $renamedNamespaceValueObject = $this->namespaceMatcher->matchRenamedNamespace($name, $this->oldToNewNamespaces);
-        if ($renamedNamespaceValueObject === null) {
+        if (! $renamedNamespaceValueObject instanceof RenamedNamespace) {
             return null;
         }
 
@@ -123,7 +123,7 @@ public function configure(array $configuration): void
     private function isClassFullyQualifiedName(Node $node): bool
     {
         $parentNode = $node->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parentNode === null) {
+        if (! $parentNode instanceof Node) {
             return false;
         }
 
@@ -142,7 +142,7 @@ private function isClassFullyQualifiedName(Node $node): bool
     private function isPartialNamespace(Name $name): bool
     {
         $resolvedName = $name->getAttribute(AttributeKey::RESOLVED_NAME);
-        if ($resolvedName === null) {
+        if (! $resolvedName instanceof Name) {
             return false;
         }
 
diff --git a/rules/restoration/src/Rector/ClassMethod/InferParamFromClassMethodReturnRector.php b/rules/restoration/src/Rector/ClassMethod/InferParamFromClassMethodReturnRector.php
index 538e02555e61..5d32f1043112 100644
--- a/rules/restoration/src/Rector/ClassMethod/InferParamFromClassMethodReturnRector.php
+++ b/rules/restoration/src/Rector/ClassMethod/InferParamFromClassMethodReturnRector.php
@@ -130,7 +130,7 @@ public function refactor(Node $node): ?Node
 
         foreach ($this->inferParamFromClassMethodReturn as $inferParamFromClassMethodReturn) {
             $returnClassMethod = $this->matchReturnClassMethod($node, $inferParamFromClassMethodReturn);
-            if ($returnClassMethod === null) {
+            if (! $returnClassMethod instanceof \PhpParser\Node\Stmt\ClassMethod) {
                 continue;
             }
 
@@ -139,7 +139,7 @@ public function refactor(Node $node): ?Node
             $currentPhpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
 
             $paramType = $this->constantReturnToParamTypeConverter->convert($returnType);
-            if ($paramType === null) {
+            if (! $paramType instanceof Type) {
                 continue;
             }
 
diff --git a/rules/restoration/src/Rector/New_/CompleteMissingDependencyInNewRector.php b/rules/restoration/src/Rector/New_/CompleteMissingDependencyInNewRector.php
index bb63d0a88bf2..bb8d9d24eec7 100644
--- a/rules/restoration/src/Rector/New_/CompleteMissingDependencyInNewRector.php
+++ b/rules/restoration/src/Rector/New_/CompleteMissingDependencyInNewRector.php
@@ -13,6 +13,7 @@
 use ReflectionClass;
 use ReflectionMethod;
 use ReflectionParameter;
+use ReflectionType;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\ConfiguredCodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -126,7 +127,7 @@ public function configure(array $configuration): void
     private function shouldSkipNew(New_ $new): bool
     {
         $constructorMethodReflection = $this->getNewNodeClassConstructorMethodReflection($new);
-        if ($constructorMethodReflection === null) {
+        if (! $constructorMethodReflection instanceof ReflectionMethod) {
             return true;
         }
 
@@ -152,7 +153,7 @@ private function getNewNodeClassConstructorMethodReflection(New_ $new): ?Reflect
     private function resolveClassToInstantiateByParameterReflection(ReflectionParameter $reflectionParameter): ?string
     {
         $parameterType = $reflectionParameter->getType();
-        if ($parameterType === null) {
+        if (! $parameterType instanceof ReflectionType) {
             return null;
         }
 
diff --git a/rules/restoration/src/Rector/Use_/RestoreFullyQualifiedNameRector.php b/rules/restoration/src/Rector/Use_/RestoreFullyQualifiedNameRector.php
index 784a956f5a4a..9c978f7255a9 100644
--- a/rules/restoration/src/Rector/Use_/RestoreFullyQualifiedNameRector.php
+++ b/rules/restoration/src/Rector/Use_/RestoreFullyQualifiedNameRector.php
@@ -11,7 +11,9 @@
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Use_;
 use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\TypeNode;
 use PHPStan\Type\MixedType;
+use Rector\AttributeAwarePhpDoc\Ast\PhpDoc\AttributeAwareReturnTagValueNode;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Restoration\NameMatcher\FullyQualifiedNameMatcher;
 use Rector\Restoration\NameMatcher\PhpDocTypeNodeNameMatcher;
@@ -148,7 +150,7 @@ private function refactorReturnTagValueNode(ClassMethod $classMethod): void
     {
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($classMethod);
         $attributeAwareReturnTagValueNode = $phpDocInfo->getReturnTagValue();
-        if ($attributeAwareReturnTagValueNode === null) {
+        if (! $attributeAwareReturnTagValueNode instanceof AttributeAwareReturnTagValueNode) {
             return;
         }
         if (! $phpDocInfo->getReturnType() instanceof MixedType) {
@@ -159,7 +161,7 @@ private function refactorReturnTagValueNode(ClassMethod $classMethod): void
             $fullyQualifiedTypeNode = $this->phpDocTypeNodeNameMatcher->matchIdentifier(
                 $attributeAwareReturnTagValueNode->type->name
             );
-            if ($fullyQualifiedTypeNode === null) {
+            if (! $fullyQualifiedTypeNode instanceof TypeNode) {
                 return;
             }
 
diff --git a/rules/sensio/src/BundleClassResolver.php b/rules/sensio/src/BundleClassResolver.php
index 163fd25161c5..85e468d05038 100644
--- a/rules/sensio/src/BundleClassResolver.php
+++ b/rules/sensio/src/BundleClassResolver.php
@@ -5,6 +5,7 @@
 namespace Rector\Sensio;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\NodeTraverser;
 use PhpParser\NodeVisitor\NameResolver;
 use Rector\CodingStyle\Naming\ClassNaming;
@@ -92,7 +93,7 @@ private function resolveClassNameFromFilePath(string $filePath): ?string
         $this->addFullyQualifiedNamesToNodes($nodes);
 
         $classLike = $this->betterNodeFinder->findFirstNonAnonymousClass($nodes);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/sensio/src/TypeDeclaration/ReturnTypeDeclarationUpdater.php b/rules/sensio/src/TypeDeclaration/ReturnTypeDeclarationUpdater.php
index 7629d921a57d..66714426eb90 100644
--- a/rules/sensio/src/TypeDeclaration/ReturnTypeDeclarationUpdater.php
+++ b/rules/sensio/src/TypeDeclaration/ReturnTypeDeclarationUpdater.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Stmt\ClassMethod;
 use PHPStan\Type\ArrayType;
 use PHPStan\Type\UnionType;
+use Rector\AttributeAwarePhpDoc\Ast\PhpDoc\AttributeAwareReturnTagValueNode;
 use Rector\AttributeAwarePhpDoc\Ast\Type\FullyQualifiedIdentifierTypeNode;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
 use Rector\Core\Php\PhpVersionProvider;
@@ -60,7 +61,7 @@ private function updatePhpDoc(ClassMethod $classMethod, string $className): void
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($classMethod);
         $attributeAwareReturnTagValueNode = $phpDocInfo->getReturnTagValue();
 
-        if ($attributeAwareReturnTagValueNode === null) {
+        if (! $attributeAwareReturnTagValueNode instanceof AttributeAwareReturnTagValueNode) {
             return;
         }
 
diff --git a/rules/symfony-code-quality/src/ConstantNameAndValueResolver.php b/rules/symfony-code-quality/src/ConstantNameAndValueResolver.php
index fcbc1828855a..3cc93c61d997 100644
--- a/rules/symfony-code-quality/src/ConstantNameAndValueResolver.php
+++ b/rules/symfony-code-quality/src/ConstantNameAndValueResolver.php
@@ -43,7 +43,7 @@ public function resolveFromAttributes(array $routeAttributes, string $prefixForN
                 }
 
                 $constantNameAndValue = $this->constantNameAndValueMatcher->matchFromArg($arg, $prefixForNumeric);
-                if ($constantNameAndValue === null) {
+                if (! $constantNameAndValue instanceof ConstantNameAndValue) {
                     continue;
                 }
 
diff --git a/rules/symfony-code-quality/src/Rector/Attribute/ExtractAttributeRouteNameConstantsRector.php b/rules/symfony-code-quality/src/Rector/Attribute/ExtractAttributeRouteNameConstantsRector.php
index 8b26f17f88f8..529262d5e094 100644
--- a/rules/symfony-code-quality/src/Rector/Attribute/ExtractAttributeRouteNameConstantsRector.php
+++ b/rules/symfony-code-quality/src/Rector/Attribute/ExtractAttributeRouteNameConstantsRector.php
@@ -11,6 +11,7 @@
 use Rector\SymfonyCodeQuality\ConstantNameAndValueResolver;
 use Rector\SymfonyCodeQuality\NodeFactory\RouteNameClassFactory;
 use Rector\SymfonyCodeQuality\ValueObject\ClassName;
+use Rector\SymfonyCodeQuality\ValueObject\ConstantNameAndValue;
 use Symfony\Component\Routing\Annotation\Route;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\ExtraFileCodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -132,7 +133,7 @@ public function refactor(Node $node): ?Node
             }
 
             $constantNameAndValue = $this->constantNameAndValueMatcher->matchFromArg($arg, 'ROUTE_');
-            if ($constantNameAndValue === null) {
+            if (! $constantNameAndValue instanceof ConstantNameAndValue) {
                 continue;
             }
 
diff --git a/rules/symfony-php-config/src/Rector/MethodCall/AutoInPhpSymfonyConfigRector.php b/rules/symfony-php-config/src/Rector/MethodCall/AutoInPhpSymfonyConfigRector.php
index c808d4ed8302..3b3c6169ca9e 100644
--- a/rules/symfony-php-config/src/Rector/MethodCall/AutoInPhpSymfonyConfigRector.php
+++ b/rules/symfony-php-config/src/Rector/MethodCall/AutoInPhpSymfonyConfigRector.php
@@ -129,7 +129,7 @@ private function shouldSkipMethodCall(MethodCall $methodCall): bool
         }
 
         $rootMethodCall = $this->fluentChainMethodCallNodeAnalyzer->resolveRootMethodCall($methodCall);
-        if ($rootMethodCall === null) {
+        if (! $rootMethodCall instanceof \PhpParser\Node\Expr\MethodCall) {
             return true;
         }
 
diff --git a/rules/symfony-phpunit/src/Rector/Class_/SelfContainerGetMethodCallFromTestToSetUpMethodRector.php b/rules/symfony-phpunit/src/Rector/Class_/SelfContainerGetMethodCallFromTestToSetUpMethodRector.php
index 84d1b3923b65..09e2bae2d2d7 100644
--- a/rules/symfony-phpunit/src/Rector/Class_/SelfContainerGetMethodCallFromTestToSetUpMethodRector.php
+++ b/rules/symfony-phpunit/src/Rector/Class_/SelfContainerGetMethodCallFromTestToSetUpMethodRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\Rector\AbstractPHPUnitRector;
 use Rector\Core\ValueObject\MethodName;
 use Rector\PHPUnit\Manipulator\OnContainerGetCallManipulator;
@@ -128,7 +129,7 @@ public function refactor(Node $node): ?Node
 
         // 2. put them to setUp() method
         $setUpClassMethod = $node->getMethod(MethodName::SET_UP);
-        if ($setUpClassMethod === null) {
+        if (! $setUpClassMethod instanceof ClassMethod) {
             $setUpClassMethod = $this->kernelTestCaseNodeFactory->createSetUpClassMethodWithGetTypes(
                 $node,
                 $serviceTypes
diff --git a/rules/symfony/src/Rector/Class_/MakeCommandLazyRector.php b/rules/symfony/src/Rector/Class_/MakeCommandLazyRector.php
index 68c1c792c6b7..6bfa7c817811 100644
--- a/rules/symfony/src/Rector/Class_/MakeCommandLazyRector.php
+++ b/rules/symfony/src/Rector/Class_/MakeCommandLazyRector.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Expr\StaticCall;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\Stmt\Expression;
 use PHPStan\Type\StringType;
 use Rector\Core\Rector\AbstractRector;
@@ -73,7 +74,7 @@ public function refactor(Node $node): ?Node
         }
 
         $commandName = $this->resolveCommandNameAndRemove($node);
-        if ($commandName === null) {
+        if (! $commandName instanceof Node) {
             return null;
         }
 
@@ -90,7 +91,7 @@ public function refactor(Node $node): ?Node
     private function resolveCommandNameAndRemove(Class_ $class): ?Node
     {
         $commandName = $this->resolveCommandNameFromConstructor($class);
-        if ($commandName === null) {
+        if (! $commandName instanceof Node) {
             $commandName = $this->resolveCommandNameFromSetName($class);
         }
 
@@ -112,7 +113,7 @@ private function resolveCommandNameFromConstructor(Class_ $class): ?Node
             }
 
             $commandName = $this->matchCommandNameNodeInConstruct($node);
-            if ($commandName === null) {
+            if (! $commandName instanceof Expr) {
                 return null;
             }
 
@@ -158,7 +159,7 @@ private function resolveCommandNameFromSetName(Class_ $class): ?Node
     private function removeConstructorIfHasOnlySetNameMethodCall(Class_ $class): void
     {
         $constructClassMethod = $class->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return;
         }
 
diff --git a/rules/symfony/src/ValueObject/ServiceMap/ServiceMap.php b/rules/symfony/src/ValueObject/ServiceMap/ServiceMap.php
index 4f0dd56fc158..af79dd8fd65e 100644
--- a/rules/symfony/src/ValueObject/ServiceMap/ServiceMap.php
+++ b/rules/symfony/src/ValueObject/ServiceMap/ServiceMap.php
@@ -31,7 +31,7 @@ public function hasService(string $id): bool
     public function getServiceType(string $id): ?Type
     {
         $serviceDefinition = $this->getService($id);
-        if ($serviceDefinition === null) {
+        if (! $serviceDefinition instanceof ServiceDefinition) {
             return null;
         }
 
diff --git a/rules/symfony2/src/Rector/StaticCall/ParseFileRector.php b/rules/symfony2/src/Rector/StaticCall/ParseFileRector.php
index 64abf040e6ec..f529005d97a9 100644
--- a/rules/symfony2/src/Rector/StaticCall/ParseFileRector.php
+++ b/rules/symfony2/src/Rector/StaticCall/ParseFileRector.php
@@ -8,6 +8,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Arg;
 use PhpParser\Node\Expr\StaticCall;
+use PHPStan\Analyser\Scope;
 use PHPStan\Type\Constant\ConstantStringType;
 use Rector\Core\Exception\ShouldNotHappenException;
 use Rector\Core\Rector\AbstractRector;
@@ -96,7 +97,7 @@ private function isArgumentYamlFile(StaticCall $staticCall): bool
 
         // try to detect current value
         $nodeScope = $possibleFileNode->getAttribute(AttributeKey::SCOPE);
-        if ($nodeScope === null) {
+        if (! $nodeScope instanceof Scope) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/rules/symfony3/src/FormHelper/FormTypeStringToTypeProvider.php b/rules/symfony3/src/FormHelper/FormTypeStringToTypeProvider.php
index f47a322e10ae..5e9ede757433 100644
--- a/rules/symfony3/src/FormHelper/FormTypeStringToTypeProvider.php
+++ b/rules/symfony3/src/FormHelper/FormTypeStringToTypeProvider.php
@@ -5,6 +5,7 @@
 namespace Rector\Symfony3\FormHelper;
 
 use Nette\Utils\Strings;
+use Rector\Symfony\Contract\Tag\TagInterface;
 use Rector\Symfony\ServiceMapProvider;
 
 final class FormTypeStringToTypeProvider
@@ -97,7 +98,7 @@ private function provideCustomServiceFormTypeByAliasFromContainerXml(): array
         $formTypeServiceDefinitions = $serviceMap->getServicesByTag('form.type');
         foreach ($formTypeServiceDefinitions as $formTypeServiceDefinition) {
             $formTypeTag = $formTypeServiceDefinition->getTag('form.type');
-            if ($formTypeTag === null) {
+            if (! $formTypeTag instanceof TagInterface) {
                 continue;
             }
 
diff --git a/rules/symfony3/src/Rector/ClassMethod/GetRequestRector.php b/rules/symfony3/src/Rector/ClassMethod/GetRequestRector.php
index 4065e3a6d81b..f1b32d9734ec 100644
--- a/rules/symfony3/src/Rector/ClassMethod/GetRequestRector.php
+++ b/rules/symfony3/src/Rector/ClassMethod/GetRequestRector.php
@@ -166,7 +166,7 @@ private function isGetRequestInAction(Node $node): bool
         }
 
         $classMethod = $node->getAttribute(AttributeKey::METHOD_NODE);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return false;
         }
 
diff --git a/rules/symfony3/src/Rector/ClassMethod/MergeMethodAnnotationToRouteAnnotationRector.php b/rules/symfony3/src/Rector/ClassMethod/MergeMethodAnnotationToRouteAnnotationRector.php
index 81e83f582ad9..026ddb5d88b7 100644
--- a/rules/symfony3/src/Rector/ClassMethod/MergeMethodAnnotationToRouteAnnotationRector.php
+++ b/rules/symfony3/src/Rector/ClassMethod/MergeMethodAnnotationToRouteAnnotationRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Symfony3\Rector\ClassMethod;
 
 use PhpParser\Node;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\ClassMethod;
 use Rector\BetterPhpDocParser\PhpDocManipulator\PhpDocTagRemover;
 use Rector\BetterPhpDocParser\ValueObject\PhpDocNode\Sensio\SensioMethodTagValueNode;
@@ -86,7 +87,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/symfony3/src/Rector/ClassMethod/RemoveDefaultGetBlockPrefixRector.php b/rules/symfony3/src/Rector/ClassMethod/RemoveDefaultGetBlockPrefixRector.php
index 6c0729ea6a6f..c00504469253 100644
--- a/rules/symfony3/src/Rector/ClassMethod/RemoveDefaultGetBlockPrefixRector.php
+++ b/rules/symfony3/src/Rector/ClassMethod/RemoveDefaultGetBlockPrefixRector.php
@@ -71,7 +71,7 @@ public function refactor(Node $node): ?Node
         }
 
         $returnedExpr = $this->resolveOnlyStmtReturnExpr($node);
-        if ($returnedExpr === null) {
+        if (! $returnedExpr instanceof Expr) {
             return null;
         }
 
diff --git a/rules/symfony3/src/Rector/MethodCall/ChangeCollectionTypeOptionNameFromTypeToEntryTypeRector.php b/rules/symfony3/src/Rector/MethodCall/ChangeCollectionTypeOptionNameFromTypeToEntryTypeRector.php
index 78a1a83f6db2..2fefc922d4f1 100644
--- a/rules/symfony3/src/Rector/MethodCall/ChangeCollectionTypeOptionNameFromTypeToEntryTypeRector.php
+++ b/rules/symfony3/src/Rector/MethodCall/ChangeCollectionTypeOptionNameFromTypeToEntryTypeRector.php
@@ -94,7 +94,7 @@ public function refactor(Node $node): ?Node
         }
 
         $optionsArray = $this->matchOptionsArray($node);
-        if ($optionsArray === null) {
+        if (! $optionsArray instanceof Array_) {
             return null;
         }
 
diff --git a/rules/symfony3/src/Rector/MethodCall/ChangeStringCollectionOptionToConstantRector.php b/rules/symfony3/src/Rector/MethodCall/ChangeStringCollectionOptionToConstantRector.php
index 8da5f4e42048..b96297747e84 100644
--- a/rules/symfony3/src/Rector/MethodCall/ChangeStringCollectionOptionToConstantRector.php
+++ b/rules/symfony3/src/Rector/MethodCall/ChangeStringCollectionOptionToConstantRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Symfony3\Rector\MethodCall;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr\Array_;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Scalar\String_;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -91,7 +92,7 @@ public function refactor(Node $node): ?Node
         }
 
         $optionsArray = $this->matchOptionsArray($node);
-        if ($optionsArray === null) {
+        if (! $optionsArray instanceof Array_) {
             return null;
         }
 
diff --git a/rules/symfony3/src/Rector/MethodCall/FormTypeInstanceToClassConstRector.php b/rules/symfony3/src/Rector/MethodCall/FormTypeInstanceToClassConstRector.php
index a5144ec4d81b..9421c941265d 100644
--- a/rules/symfony3/src/Rector/MethodCall/FormTypeInstanceToClassConstRector.php
+++ b/rules/symfony3/src/Rector/MethodCall/FormTypeInstanceToClassConstRector.php
@@ -19,6 +19,7 @@
 use Rector\Symfony3\NodeFactory\BuilderFormNodeFactory;
 use Rector\Symfony3\NodeFactory\ConfigureOptionsNodeFactory;
 use ReflectionClass;
+use ReflectionMethod;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
 
@@ -144,7 +145,7 @@ private function processNewInstance(MethodCall $methodCall, int $position, int $
                 $argValue->args
             );
 
-            if ($methodCall === null) {
+            if (! $methodCall instanceof \PhpParser\Node\Expr\MethodCall) {
                 return null;
             }
         }
@@ -157,7 +158,7 @@ private function processNewInstance(MethodCall $methodCall, int $position, int $
     private function refactorCollectionOptions(MethodCall $methodCall): void
     {
         $optionsArray = $this->matchOptionsArray($methodCall);
-        if ($optionsArray === null) {
+        if (! $optionsArray instanceof Array_) {
             return;
         }
 
@@ -216,14 +217,14 @@ private function moveArgumentsToOptions(
         }
 
         $formTypeClass = $this->nodeRepository->findClass($className);
-        if ($formTypeClass === null) {
+        if (! $formTypeClass instanceof Class_) {
             return null;
         }
 
         $constructorClassMethod = $formTypeClass->getMethod(MethodName::CONSTRUCT);
 
         // nothing we can do, out of scope
-        if ($constructorClassMethod === null) {
+        if (! $constructorClassMethod instanceof ClassMethod) {
             return null;
         }
 
@@ -245,7 +246,7 @@ private function resolveNamesToArgs(string $className, array $argNodes): array
         $reflectionClass = new ReflectionClass($className);
         $constructorReflectionMethod = $reflectionClass->getConstructor();
 
-        if ($constructorReflectionMethod === null) {
+        if (! $constructorReflectionMethod instanceof ReflectionMethod) {
             return [];
         }
 
diff --git a/rules/symfony3/src/Rector/MethodCall/OptionNameRector.php b/rules/symfony3/src/Rector/MethodCall/OptionNameRector.php
index 7ffc7275c3de..70b01064d23b 100644
--- a/rules/symfony3/src/Rector/MethodCall/OptionNameRector.php
+++ b/rules/symfony3/src/Rector/MethodCall/OptionNameRector.php
@@ -5,6 +5,7 @@
 namespace Rector\Symfony3\Rector\MethodCall;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr\Array_;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Scalar\String_;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -61,7 +62,7 @@ public function refactor(Node $node): ?Node
         }
 
         $optionsArray = $this->matchOptionsArray($node);
-        if ($optionsArray === null) {
+        if (! $optionsArray instanceof Array_) {
             return null;
         }
 
diff --git a/rules/symfony3/src/Rector/MethodCall/ReadOnlyOptionToAttributeRector.php b/rules/symfony3/src/Rector/MethodCall/ReadOnlyOptionToAttributeRector.php
index cb6a9d2c4f98..c6b5cb298c4a 100644
--- a/rules/symfony3/src/Rector/MethodCall/ReadOnlyOptionToAttributeRector.php
+++ b/rules/symfony3/src/Rector/MethodCall/ReadOnlyOptionToAttributeRector.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\ArrayItem;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Scalar\String_;
 use Rector\Core\PhpParser\Node\Manipulator\ArrayManipulator;
@@ -73,7 +74,7 @@ public function refactor(Node $node): ?Node
         }
 
         $optionsArray = $this->matchOptionsArray($node);
-        if ($optionsArray === null) {
+        if (! $optionsArray instanceof Array_) {
             return null;
         }
         if (! $optionsArray instanceof Array_) {
@@ -81,7 +82,7 @@ public function refactor(Node $node): ?Node
         }
 
         $readOnlyArrayItem = $this->arrayManipulator->findItemInInArrayByKeyAndUnset($optionsArray, 'read_only');
-        if ($readOnlyArrayItem === null) {
+        if (! $readOnlyArrayItem instanceof ArrayItem) {
             return null;
         }
 
diff --git a/rules/symfony4/src/Rector/MethodCall/FormIsValidRector.php b/rules/symfony4/src/Rector/MethodCall/FormIsValidRector.php
index f3726e550231..914f6ae44b9c 100644
--- a/rules/symfony4/src/Rector/MethodCall/FormIsValidRector.php
+++ b/rules/symfony4/src/Rector/MethodCall/FormIsValidRector.php
@@ -85,7 +85,7 @@ private function shouldSkipMethodCall(MethodCall $methodCall): bool
     {
         $originalNode = $methodCall->getAttribute(AttributeKey::ORIGINAL_NODE);
         // skip just added calls
-        if ($originalNode === null) {
+        if (! $originalNode instanceof Node) {
             return true;
         }
 
diff --git a/rules/symfony4/src/Rector/MethodCall/SimplifyWebTestCaseAssertionsRector.php b/rules/symfony4/src/Rector/MethodCall/SimplifyWebTestCaseAssertionsRector.php
index 8409251795a2..31301de62fdb 100644
--- a/rules/symfony4/src/Rector/MethodCall/SimplifyWebTestCaseAssertionsRector.php
+++ b/rules/symfony4/src/Rector/MethodCall/SimplifyWebTestCaseAssertionsRector.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Scalar\LNumber;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\Expression;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -131,7 +132,7 @@ public function refactor(Node $node): ?Node
     private function isInWebTestCase(MethodCall $methodCall): bool
     {
         $classLike = $methodCall->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return false;
         }
 
diff --git a/rules/symfony4/src/Rector/New_/StringToArrayArgumentProcessRector.php b/rules/symfony4/src/Rector/New_/StringToArrayArgumentProcessRector.php
index 80958144f3fd..78c50e539923 100644
--- a/rules/symfony4/src/Rector/New_/StringToArrayArgumentProcessRector.php
+++ b/rules/symfony4/src/Rector/New_/StringToArrayArgumentProcessRector.php
@@ -145,7 +145,7 @@ private function splitProcessCommandToItems(string $process): array
     private function processPreviousAssign(Node $node, Expr $firstArgumentExpr): void
     {
         $previousNodeAssign = $this->findPreviousNodeAssign($node, $firstArgumentExpr);
-        if ($previousNodeAssign === null) {
+        if (! $previousNodeAssign instanceof Assign) {
             return;
         }
 
diff --git a/rules/transform/src/Rector/Assign/PropertyToMethodRector.php b/rules/transform/src/Rector/Assign/PropertyToMethodRector.php
index 2dd9725ce48e..4ea4cbe5bc81 100644
--- a/rules/transform/src/Rector/Assign/PropertyToMethodRector.php
+++ b/rules/transform/src/Rector/Assign/PropertyToMethodRector.php
@@ -109,7 +109,7 @@ private function processSetter(Assign $assign): ?Node
         $propertyFetchNode = $assign->var;
 
         $propertyToMethodCall = $this->matchPropertyFetchCandidate($propertyFetchNode);
-        if ($propertyToMethodCall === null) {
+        if (! $propertyToMethodCall instanceof PropertyToMethod) {
             return null;
         }
 
@@ -131,7 +131,7 @@ private function processGetter(Assign $assign): ?Node
         $propertyFetchNode = $assign->expr;
 
         $propertyToMethodCall = $this->matchPropertyFetchCandidate($propertyFetchNode);
-        if ($propertyToMethodCall === null) {
+        if (! $propertyToMethodCall instanceof PropertyToMethod) {
             return null;
         }
 
diff --git a/rules/transform/src/Rector/FuncCall/ArgumentFuncCallToMethodCallRector.php b/rules/transform/src/Rector/FuncCall/ArgumentFuncCallToMethodCallRector.php
index 4147d3702064..f318f977de7b 100644
--- a/rules/transform/src/Rector/FuncCall/ArgumentFuncCallToMethodCallRector.php
+++ b/rules/transform/src/Rector/FuncCall/ArgumentFuncCallToMethodCallRector.php
@@ -14,6 +14,7 @@
 use Rector\Core\Exception\ShouldNotHappenException;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Naming\Naming\PropertyNaming;
+use Rector\Naming\ValueObject\ExpectedName;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Rector\StaticTypeMapper\ValueObject\Type\FullyQualifiedObjectType;
 use Rector\Transform\ValueObject\ArgumentFuncCallToMethodCall;
@@ -179,7 +180,7 @@ private function refactorFuncCallToMethodCall(
         $fullyQualifiedObjectType = new FullyQualifiedObjectType($argumentFuncCallToMethodCall->getClass());
         $expectedName = $this->propertyNaming->getExpectedNameFromType($fullyQualifiedObjectType);
 
-        if ($expectedName === null) {
+        if (! $expectedName instanceof ExpectedName) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/rules/transform/src/Rector/MethodCall/ServiceGetterToConstructorInjectionRector.php b/rules/transform/src/Rector/MethodCall/ServiceGetterToConstructorInjectionRector.php
index 547278f2052b..754e6bdb1eee 100644
--- a/rules/transform/src/Rector/MethodCall/ServiceGetterToConstructorInjectionRector.php
+++ b/rules/transform/src/Rector/MethodCall/ServiceGetterToConstructorInjectionRector.php
@@ -10,6 +10,7 @@
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Identifier;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassLike;
 use PHPStan\Type\ObjectType;
 use Rector\Core\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Core\Rector\AbstractRector;
@@ -138,7 +139,7 @@ public function getNodeTypes(): array
     public function refactor(Node $node): ?Node
     {
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/transform/src/Rector/New_/NewToConstructorInjectionRector.php b/rules/transform/src/Rector/New_/NewToConstructorInjectionRector.php
index 4bc3a1791ac7..837a9aa258ee 100644
--- a/rules/transform/src/Rector/New_/NewToConstructorInjectionRector.php
+++ b/rules/transform/src/Rector/New_/NewToConstructorInjectionRector.php
@@ -14,6 +14,7 @@
 use Rector\Core\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Naming\Naming\PropertyNaming;
+use Rector\Naming\ValueObject\ExpectedName;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Rector\Transform\NodeFactory\PropertyFetchFactory;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\ConfiguredCodeSample;
@@ -172,7 +173,7 @@ private function refactorNew(New_ $new): void
 
             $objectType = new ObjectType($typeToConstructorInjection);
             $expectedPropertyName = $this->propertyNaming->getExpectedNameFromType($objectType);
-            if ($expectedPropertyName === null) {
+            if (! $expectedPropertyName instanceof ExpectedName) {
                 continue;
             }
 
diff --git a/rules/twig/src/Rector/Return_/SimpleFunctionAndFilterRector.php b/rules/twig/src/Rector/Return_/SimpleFunctionAndFilterRector.php
index 9cb4cf53a587..3cec5c4754ed 100644
--- a/rules/twig/src/Rector/Return_/SimpleFunctionAndFilterRector.php
+++ b/rules/twig/src/Rector/Return_/SimpleFunctionAndFilterRector.php
@@ -11,6 +11,7 @@
 use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\Node\Stmt\Return_;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
@@ -100,7 +101,7 @@ public function refactor(Node $node): ?Node
         }
 
         $classLike = $node->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return null;
         }
 
diff --git a/rules/type-declaration/src/AlreadyAssignDetector/ConstructorAssignDetector.php b/rules/type-declaration/src/AlreadyAssignDetector/ConstructorAssignDetector.php
index d2f09a768010..a341576c4361 100644
--- a/rules/type-declaration/src/AlreadyAssignDetector/ConstructorAssignDetector.php
+++ b/rules/type-declaration/src/AlreadyAssignDetector/ConstructorAssignDetector.php
@@ -5,6 +5,7 @@
 namespace Rector\TypeDeclaration\AlreadyAssignDetector;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\NodeTraverser;
@@ -21,7 +22,7 @@ public function isPropertyAssigned(ClassLike $classLike, string $propertyName):
             $propertyName, &$isAssignedInConstructor
         ): ?int {
             $expr = $this->matchAssignExprToPropertyName($node, $propertyName);
-            if ($expr === null) {
+            if (! $expr instanceof Expr) {
                 return null;
             }
 
diff --git a/rules/type-declaration/src/AlreadyAssignDetector/NullTypeAssignDetector.php b/rules/type-declaration/src/AlreadyAssignDetector/NullTypeAssignDetector.php
index fbd88d923809..2c0f7ca2bba9 100644
--- a/rules/type-declaration/src/AlreadyAssignDetector/NullTypeAssignDetector.php
+++ b/rules/type-declaration/src/AlreadyAssignDetector/NullTypeAssignDetector.php
@@ -5,6 +5,7 @@
 namespace Rector\TypeDeclaration\AlreadyAssignDetector;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Stmt\ClassLike;
 use PhpParser\NodeTraverser;
 use Rector\NodeNestingScope\ScopeNestingComparator;
@@ -49,7 +50,7 @@ public function detect(ClassLike $classLike, string $propertyName): ?bool
             $propertyName, &$needsNullType
         ): ?int {
             $expr = $this->matchAssignExprToPropertyName($node, $propertyName);
-            if ($expr === null) {
+            if (! $expr instanceof Expr) {
                 return null;
             }
 
diff --git a/rules/type-declaration/src/ChildPopulator/ChildParamPopulator.php b/rules/type-declaration/src/ChildPopulator/ChildParamPopulator.php
index b016ce6e3b91..5abc9e07d47e 100644
--- a/rules/type-declaration/src/ChildPopulator/ChildParamPopulator.php
+++ b/rules/type-declaration/src/ChildPopulator/ChildParamPopulator.php
@@ -85,7 +85,7 @@ private function addParamTypeToMethod(
         $methodName = $this->nodeNameResolver->getName($classMethod);
 
         $currentClassMethod = $classLike->getMethod($methodName);
-        if ($currentClassMethod === null) {
+        if (! $currentClassMethod instanceof ClassMethod) {
             return;
         }
 
diff --git a/rules/type-declaration/src/ChildPopulator/ChildReturnPopulator.php b/rules/type-declaration/src/ChildPopulator/ChildReturnPopulator.php
index b82e64252f67..2cecc84e126e 100644
--- a/rules/type-declaration/src/ChildPopulator/ChildReturnPopulator.php
+++ b/rules/type-declaration/src/ChildPopulator/ChildReturnPopulator.php
@@ -66,7 +66,7 @@ private function addReturnTypeToChildMethod(
         $methodName = $this->nodeNameResolver->getName($classMethod);
 
         $currentClassMethod = $classLike->getMethod($methodName);
-        if ($currentClassMethod === null) {
+        if (! $currentClassMethod instanceof ClassMethod) {
             return;
         }
 
diff --git a/rules/type-declaration/src/PhpDocParser/NonInformativeReturnTagRemover.php b/rules/type-declaration/src/PhpDocParser/NonInformativeReturnTagRemover.php
index 4163087cafdf..c599812ce850 100644
--- a/rules/type-declaration/src/PhpDocParser/NonInformativeReturnTagRemover.php
+++ b/rules/type-declaration/src/PhpDocParser/NonInformativeReturnTagRemover.php
@@ -137,12 +137,12 @@ private function removeNullableType(
         PhpDocInfo $phpDocInfo
     ): void {
         $nullabledReturnType = $this->matchNullabledType($returnType);
-        if ($nullabledReturnType === null) {
+        if (! $nullabledReturnType instanceof Type) {
             return;
         }
 
         $nullabledReturnTagValueNode = $this->matchNullabledReturnTagValueNode($attributeAwareReturnTagValueNode);
-        if ($nullabledReturnTagValueNode === null) {
+        if (! $nullabledReturnTagValueNode instanceof TypeNode) {
             return;
         }
 
diff --git a/rules/type-declaration/src/Rector/ClassMethod/AddParamTypeDeclarationRector.php b/rules/type-declaration/src/Rector/ClassMethod/AddParamTypeDeclarationRector.php
index 6c576fd67324..6b5561e56baf 100644
--- a/rules/type-declaration/src/Rector/ClassMethod/AddParamTypeDeclarationRector.php
+++ b/rules/type-declaration/src/Rector/ClassMethod/AddParamTypeDeclarationRector.php
@@ -163,7 +163,7 @@ private function refactorClassMethodWithTypehintByParameterPosition(
         AddParamTypeDeclaration $addParamTypeDeclaration
     ): void {
         $parameter = $classMethod->params[$addParamTypeDeclaration->getPosition()] ?? null;
-        if ($parameter === null) {
+        if (! $parameter instanceof Param) {
             return;
         }
 
diff --git a/rules/type-declaration/src/Rector/Identical/FlipTypeControlToUseExclusiveTypeRector.php b/rules/type-declaration/src/Rector/Identical/FlipTypeControlToUseExclusiveTypeRector.php
index c6b1941cc22a..e6c3c6e21394 100644
--- a/rules/type-declaration/src/Rector/Identical/FlipTypeControlToUseExclusiveTypeRector.php
+++ b/rules/type-declaration/src/Rector/Identical/FlipTypeControlToUseExclusiveTypeRector.php
@@ -14,6 +14,7 @@
 use PhpParser\Node\Stmt\Expression;
 use PHPStan\PhpDocParser\Ast\PhpDoc\VarTagValueNode;
 use PHPStan\Type\NullType;
+use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
 use PHPStan\Type\UnionType;
 use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfo;
@@ -110,6 +111,10 @@ public function refactor(Node $node): ?Node
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($expression);
         $type = $phpDocInfo->getVarType();
 
+        if (! $type instanceof UnionType) {
+            $type = $this->getObjectType($assign->expr);
+        }
+
         if (! $type instanceof UnionType) {
             return null;
         }
@@ -132,13 +137,14 @@ private function processConvertToExclusiveType(array $types, Expr $expr, PhpDocI
             ? $types[1]
             : $types[0];
 
-        if (! $type instanceof FullyQualifiedObjectType) {
+        if (! $type instanceof FullyQualifiedObjectType && ! $type instanceof ObjectType) {
             return null;
         }
 
-        /** @var VarTagValueNode $tagValueNode */
         $tagValueNode = $phpDocInfo->getVarTagValueNode();
-        $this->phpDocTagRemover->removeTagValueFromNode($phpDocInfo, $tagValueNode);
+        if ($tagValueNode instanceof VarTagValueNode) {
+            $this->phpDocTagRemover->removeTagValueFromNode($phpDocInfo, $tagValueNode);
+        }
 
         return new BooleanNot(new Instanceof_($expr, new FullyQualified($type->getClassName())));
     }
diff --git a/rules/type-declaration/src/TypeAnalyzer/AdvancedArrayAnalyzer.php b/rules/type-declaration/src/TypeAnalyzer/AdvancedArrayAnalyzer.php
index 7961b5d5dfe8..33e7a098b0a8 100644
--- a/rules/type-declaration/src/TypeAnalyzer/AdvancedArrayAnalyzer.php
+++ b/rules/type-declaration/src/TypeAnalyzer/AdvancedArrayAnalyzer.php
@@ -44,7 +44,7 @@ public function isClassStringArrayByStringArrayOverride(ArrayType $arrayType, Cl
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($classMethod);
 
         $arrayType = $this->typeNormalizer->convertConstantArrayTypeToArrayType($arrayType);
-        if ($arrayType === null) {
+        if (! $arrayType instanceof ArrayType) {
             return false;
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/AssignToPropertyTypeInferer.php b/rules/type-declaration/src/TypeInferer/AssignToPropertyTypeInferer.php
index 492ccce023a2..de45acdc54c1 100644
--- a/rules/type-declaration/src/TypeInferer/AssignToPropertyTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/AssignToPropertyTypeInferer.php
@@ -5,6 +5,7 @@
 namespace Rector\TypeDeclaration\TypeInferer;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\ArrayDimFetch;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Stmt\ClassLike;
@@ -64,12 +65,12 @@ public function inferPropertyInClassLike(string $propertyName, ClassLike $classL
             }
 
             $expr = $this->propertyAssignMatcher->matchPropertyAssignExpr($node, $propertyName);
-            if ($expr === null) {
+            if (! $expr instanceof Expr) {
                 return null;
             }
 
             $exprStaticType = $this->resolveExprStaticTypeIncludingDimFetch($node);
-            if ($exprStaticType === null) {
+            if (! $exprStaticType instanceof Type) {
                 return null;
             }
 
diff --git a/rules/type-declaration/src/TypeInferer/ParamTypeInferer/FunctionLikeDocParamTypeInferer.php b/rules/type-declaration/src/TypeInferer/ParamTypeInferer/FunctionLikeDocParamTypeInferer.php
index 477685e21c07..2d776759985c 100644
--- a/rules/type-declaration/src/TypeInferer/ParamTypeInferer/FunctionLikeDocParamTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/ParamTypeInferer/FunctionLikeDocParamTypeInferer.php
@@ -30,7 +30,7 @@ public function __construct(NodeNameResolver $nodeNameResolver, PhpDocInfoFactor
     public function inferParam(Param $param): Type
     {
         $functionLike = $this->resolveScopeNode($param);
-        if ($functionLike === null) {
+        if (! $functionLike instanceof FunctionLike) {
             return new MixedType();
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/ParamTypeInferer/PHPUnitDataProviderParamTypeInferer.php b/rules/type-declaration/src/TypeInferer/ParamTypeInferer/PHPUnitDataProviderParamTypeInferer.php
index 38498c8429fc..9eac4b8fbc53 100644
--- a/rules/type-declaration/src/TypeInferer/ParamTypeInferer/PHPUnitDataProviderParamTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/ParamTypeInferer/PHPUnitDataProviderParamTypeInferer.php
@@ -67,7 +67,7 @@ public function autowirePHPUnitDataProviderParamTypeInferer(NodeTypeResolver $no
     public function inferParam(Param $param): Type
     {
         $dataProviderClassMethod = $this->resolveDataProviderClassMethod($param);
-        if ($dataProviderClassMethod === null) {
+        if (! $dataProviderClassMethod instanceof ClassMethod) {
             return new MixedType();
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/ConstructorPropertyTypeInferer.php b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/ConstructorPropertyTypeInferer.php
index e51a30f4085f..ce728b3a8cbd 100644
--- a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/ConstructorPropertyTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/ConstructorPropertyTypeInferer.php
@@ -48,14 +48,14 @@ public function inferProperty(Property $property): Type
         }
 
         $classMethod = $classLike->getMethod(MethodName::CONSTRUCT);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return new MixedType();
         }
 
         $propertyName = $this->nodeNameResolver->getName($property);
 
         $param = $this->classMethodPropertyFetchManipulator->resolveParamForPropertyFetch($classMethod, $propertyName);
-        if ($param === null) {
+        if (! $param instanceof Param) {
             return new MixedType();
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineColumnPropertyTypeInferer.php b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineColumnPropertyTypeInferer.php
index a8f00791582c..7f0cb5a683be 100644
--- a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineColumnPropertyTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineColumnPropertyTypeInferer.php
@@ -87,7 +87,7 @@ public function inferProperty(Property $property): Type
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($property);
 
         $doctrineColumnTagValueNode = $phpDocInfo->getByType(ColumnTagValueNode::class);
-        if ($doctrineColumnTagValueNode === null) {
+        if (! $doctrineColumnTagValueNode instanceof ColumnTagValueNode) {
             return new MixedType();
         }
 
@@ -97,7 +97,7 @@ public function inferProperty(Property $property): Type
         }
 
         $scalarType = $this->doctrineTypeToScalarType[$type] ?? null;
-        if ($scalarType === null) {
+        if (! $scalarType instanceof Type) {
             return new MixedType();
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineRelationPropertyTypeInferer.php b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineRelationPropertyTypeInferer.php
index 159abfdac8fb..5d652c855a14 100644
--- a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineRelationPropertyTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/DoctrineRelationPropertyTypeInferer.php
@@ -46,7 +46,7 @@ public function inferProperty(Property $property): Type
         $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($property);
 
         $relationTagValueNode = $phpDocInfo->getByType(DoctrineRelationTagValueNodeInterface::class);
-        if ($relationTagValueNode === null) {
+        if (! $relationTagValueNode instanceof DoctrineRelationTagValueNodeInterface) {
             return new MixedType();
         }
 
@@ -93,7 +93,7 @@ private function processToOneRelation(
         }
 
         // nullable by default
-        if ($joinColumnTagValueNode === null || $joinColumnTagValueNode->isNullable()) {
+        if (! $joinColumnTagValueNode instanceof JoinColumnTagValueNode || $joinColumnTagValueNode->isNullable()) {
             $types[] = new NullType();
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/SingleMethodAssignedNodePropertyTypeInferer.php b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/SingleMethodAssignedNodePropertyTypeInferer.php
index fc028d401002..d3fcb3b2b3a4 100644
--- a/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/SingleMethodAssignedNodePropertyTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/PropertyTypeInferer/SingleMethodAssignedNodePropertyTypeInferer.php
@@ -29,14 +29,14 @@ public function inferProperty(Property $property): Type
         }
 
         $classMethod = $classLike->getMethod(MethodName::CONSTRUCT);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return new MixedType();
         }
 
         $propertyName = $this->nodeNameResolver->getName($property);
 
         $assignedNode = $this->resolveAssignedNodeToProperty($classMethod, $propertyName);
-        if ($assignedNode === null) {
+        if (! $assignedNode instanceof Expr) {
             return new MixedType();
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/SetterNodeReturnTypeInferer.php b/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/SetterNodeReturnTypeInferer.php
index 78eae5a22bf6..1fd5c4a84120 100644
--- a/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/SetterNodeReturnTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/SetterNodeReturnTypeInferer.php
@@ -5,6 +5,7 @@
 namespace Rector\TypeDeclaration\TypeInferer\ReturnTypeInferer;
 
 use PhpParser\Node\FunctionLike;
+use PhpParser\Node\Stmt\ClassLike;
 use PHPStan\Type\MixedType;
 use PHPStan\Type\Type;
 use Rector\Core\PhpParser\Node\Manipulator\FunctionLikeManipulator;
@@ -36,7 +37,7 @@ public function __construct(
     public function inferFunctionLike(FunctionLike $functionLike): Type
     {
         $classLike = $functionLike->getAttribute(AttributeKey::CLASS_NODE);
-        if ($classLike === null) {
+        if (! $classLike instanceof ClassLike) {
             return new MixedType();
         }
 
diff --git a/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/YieldNodesReturnTypeInferer.php b/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/YieldNodesReturnTypeInferer.php
index 3d55fbff254c..6cb538ee6ec0 100644
--- a/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/YieldNodesReturnTypeInferer.php
+++ b/rules/type-declaration/src/TypeInferer/ReturnTypeInferer/YieldNodesReturnTypeInferer.php
@@ -50,7 +50,7 @@ public function inferFunctionLike(FunctionLike $functionLike): Type
         $types = [];
         foreach ($yieldNodes as $yieldNode) {
             $value = $this->resolveYieldValue($yieldNode);
-            if ($value === null) {
+            if (! $value instanceof Expr) {
                 continue;
             }
 
diff --git a/rules/type-declaration/tests/Rector/Identical/FlipTypeControlToUseExclusiveTypeRector/Fixture/nullable_type.php.inc b/rules/type-declaration/tests/Rector/Identical/FlipTypeControlToUseExclusiveTypeRector/Fixture/nullable_type.php.inc
new file mode 100644
index 000000000000..e27af4c48728
--- /dev/null
+++ b/rules/type-declaration/tests/Rector/Identical/FlipTypeControlToUseExclusiveTypeRector/Fixture/nullable_type.php.inc
@@ -0,0 +1,55 @@
+<?php
+
+namespace Rector\TypeDeclaration\Tests\Rector\Identical\FlipTypeControlToUseExclusiveTypeRector\Fixture;
+
+use stdClass;
+
+class NullableType
+{
+    public function run()
+    {
+        $stdClass = $this->getStdClass();
+        if ($stdClass === null) {
+            return;
+        }
+    }
+
+    private function getStdClass(): ?stdClass
+    {
+        if (rand(0, 1)) {
+            return new stdClass;
+        }
+
+        return null;
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\TypeDeclaration\Tests\Rector\Identical\FlipTypeControlToUseExclusiveTypeRector\Fixture;
+
+use stdClass;
+
+class NullableType
+{
+    public function run()
+    {
+        $stdClass = $this->getStdClass();
+        if (!$stdClass instanceof \stdClass) {
+            return;
+        }
+    }
+
+    private function getStdClass(): ?stdClass
+    {
+        if (rand(0, 1)) {
+            return new stdClass;
+        }
+
+        return null;
+    }
+}
+
+?>
diff --git a/src/Comments/CommentableNodeResolver.php b/src/Comments/CommentableNodeResolver.php
index 1b8c8ecb8769..59fcac53800b 100644
--- a/src/Comments/CommentableNodeResolver.php
+++ b/src/Comments/CommentableNodeResolver.php
@@ -20,7 +20,7 @@ public function resolve(Node $node): Node
 
         while (! $currentNode instanceof Stmt) {
             $currentNode = $currentNode->getAttribute(AttributeKey::PARENT_NODE);
-            if ($currentNode === null) {
+            if (! $currentNode instanceof Node) {
                 return $previousNode;
             }
 
diff --git a/src/Console/Command/AbstractCommand.php b/src/Console/Command/AbstractCommand.php
index d4c3a87331ac..a9eddfce2c4d 100644
--- a/src/Console/Command/AbstractCommand.php
+++ b/src/Console/Command/AbstractCommand.php
@@ -7,6 +7,7 @@
 use Rector\Caching\Detector\ChangedFilesDetector;
 use Rector\Core\Configuration\Option;
 use Rector\Core\Exception\ShouldNotHappenException;
+use Symfony\Component\Console\Application;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -29,7 +30,7 @@ public function autowireAbstractCommand(ChangedFilesDetector $changedFilesDetect
     protected function initialize(InputInterface $input, OutputInterface $output): void
     {
         $application = $this->getApplication();
-        if ($application === null) {
+        if (! $application instanceof Application) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/src/Context/ContextAnalyzer.php b/src/Context/ContextAnalyzer.php
index b271000201a7..8e2752d26cc3 100644
--- a/src/Context/ContextAnalyzer.php
+++ b/src/Context/ContextAnalyzer.php
@@ -44,7 +44,7 @@ public function isInLoop(Node $node): bool
         $stopNodes = array_merge(self::LOOP_NODES, self::BREAK_NODES);
 
         $firstParent = $this->betterNodeFinder->findParentTypes($node, $stopNodes);
-        if ($firstParent === null) {
+        if (! $firstParent instanceof Node) {
             return false;
         }
 
@@ -57,7 +57,7 @@ public function isInIf(Node $node): bool
 
         $previousNode = $this->betterNodeFinder->findParentTypes($node, $breakNodes);
 
-        if ($previousNode === null) {
+        if (! $previousNode instanceof Node) {
             return false;
         }
 
diff --git a/src/Exclusion/ExclusionManager.php b/src/Exclusion/ExclusionManager.php
index a8b68f9c2f3c..98bb0f08bd99 100644
--- a/src/Exclusion/ExclusionManager.php
+++ b/src/Exclusion/ExclusionManager.php
@@ -36,7 +36,7 @@ public function isNodeSkippedByRector(Node $node, PhpRectorInterface $phpRector)
     {
         if ($node instanceof PropertyProperty || $node instanceof Const_) {
             $node = $node->getAttribute(AttributeKey::PARENT_NODE);
-            if ($node === null) {
+            if (! $node instanceof Node) {
                 return false;
             }
         }
diff --git a/src/NodeAnalyzer/PromotedPropertyResolver.php b/src/NodeAnalyzer/PromotedPropertyResolver.php
index 13cc123c46da..ac495f72e749 100644
--- a/src/NodeAnalyzer/PromotedPropertyResolver.php
+++ b/src/NodeAnalyzer/PromotedPropertyResolver.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node\Param;
 use PhpParser\Node\Stmt\Class_;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\ValueObject\MethodName;
 
 final class PromotedPropertyResolver
@@ -16,7 +17,7 @@ final class PromotedPropertyResolver
     public function resolveFromClass(Class_ $class): array
     {
         $constructClassMethod = $class->getMethod(MethodName::CONSTRUCT);
-        if ($constructClassMethod === null) {
+        if (! $constructClassMethod instanceof ClassMethod) {
             return [];
         }
 
diff --git a/src/PHPStan/Reflection/TypeToCallReflectionResolver/ConstantArrayTypeToCallReflectionResolver.php b/src/PHPStan/Reflection/TypeToCallReflectionResolver/ConstantArrayTypeToCallReflectionResolver.php
index 7d41d2c185d1..c6a9480b23d3 100644
--- a/src/PHPStan/Reflection/TypeToCallReflectionResolver/ConstantArrayTypeToCallReflectionResolver.php
+++ b/src/PHPStan/Reflection/TypeToCallReflectionResolver/ConstantArrayTypeToCallReflectionResolver.php
@@ -42,7 +42,7 @@ public function supports(Type $type): bool
     public function resolve(Type $type, ClassMemberAccessAnswerer $classMemberAccessAnswerer): ?MethodReflection
     {
         $constantArrayTypeAndMethod = $this->findTypeAndMethodName($type);
-        if ($constantArrayTypeAndMethod === null) {
+        if (! $constantArrayTypeAndMethod instanceof ConstantArrayTypeAndMethod) {
             return null;
         }
         if ($constantArrayTypeAndMethod->isUnknown()) {
diff --git a/src/Php/Regex/RegexPatternArgumentManipulator.php b/src/Php/Regex/RegexPatternArgumentManipulator.php
index 4475a815ee2e..13672d125b9a 100644
--- a/src/Php/Regex/RegexPatternArgumentManipulator.php
+++ b/src/Php/Regex/RegexPatternArgumentManipulator.php
@@ -13,6 +13,8 @@
 use PhpParser\Node\Expr\StaticCall;
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Scalar\String_;
+use PhpParser\Node\Stmt\ClassConst;
+use PhpParser\Node\Stmt\ClassMethod;
 use Rector\Core\PhpParser\Node\BetterNodeFinder;
 use Rector\Core\PhpParser\Printer\BetterStandardPrinter;
 use Rector\NodeCollector\NodeCollector\ParsedNodeCollector;
@@ -182,7 +184,7 @@ private function resolveArgumentValues(Expr $expr): array
     private function findAssignerForVariable(Variable $variable): array
     {
         $classMethod = $variable->getAttribute(AttributeKey::METHOD_NODE);
-        if ($classMethod === null) {
+        if (! $classMethod instanceof ClassMethod) {
             return [];
         }
 
@@ -205,7 +207,7 @@ private function findAssignerForVariable(Variable $variable): array
     private function resolveClassConstFetchValue(ClassConstFetch $classConstFetch): array
     {
         $classConstNode = $this->parsedNodeCollector->findClassConstByClassConstFetch($classConstFetch);
-        if ($classConstNode === null) {
+        if (! $classConstNode instanceof ClassConst) {
             return [];
         }
 
diff --git a/src/PhpParser/Node/BetterNodeFinder.php b/src/PhpParser/Node/BetterNodeFinder.php
index b26fa2121c97..681f244f5450 100644
--- a/src/PhpParser/Node/BetterNodeFinder.php
+++ b/src/PhpParser/Node/BetterNodeFinder.php
@@ -211,7 +211,7 @@ public function hasInstancesOf($nodes, array $types): bool
         foreach ($types as $type) {
             $nodeFinderFindFirstInstanceOf = $this->nodeFinder->findFirstInstanceOf($nodes, $type);
 
-            if ($nodeFinderFindFirstInstanceOf === null) {
+            if (! $nodeFinderFindFirstInstanceOf instanceof Node) {
                 continue;
             }
 
diff --git a/src/PhpParser/Node/Manipulator/ArrayManipulator.php b/src/PhpParser/Node/Manipulator/ArrayManipulator.php
index cf6c6a2231d2..c90b417fba32 100644
--- a/src/PhpParser/Node/Manipulator/ArrayManipulator.php
+++ b/src/PhpParser/Node/Manipulator/ArrayManipulator.php
@@ -79,7 +79,7 @@ public function findItemInInArrayByKeyAndUnset(Array_ $array, string $keyName):
             }
 
             $removedArrayItem = $array->items[$i];
-            if ($removedArrayItem === null) {
+            if (! $removedArrayItem instanceof ArrayItem) {
                 continue;
             }
             // remove + recount for the printer
diff --git a/src/PhpParser/Node/Manipulator/ChildAndParentClassManipulator.php b/src/PhpParser/Node/Manipulator/ChildAndParentClassManipulator.php
index ef139120ea3b..9a1ffcc40240 100644
--- a/src/PhpParser/Node/Manipulator/ChildAndParentClassManipulator.php
+++ b/src/PhpParser/Node/Manipulator/ChildAndParentClassManipulator.php
@@ -92,7 +92,7 @@ public function completeChildConstructors(Class_ $class, ClassMethod $constructo
 
         foreach ($childClasses as $childClass) {
             $childConstructorClassMethod = $childClass->getMethod(MethodName::CONSTRUCT);
-            if ($childConstructorClassMethod === null) {
+            if (! $childConstructorClassMethod instanceof ClassMethod) {
                 continue;
             }
 
@@ -116,7 +116,7 @@ public function completeChildConstructors(Class_ $class, ClassMethod $constructo
     private function completeParentConstructorBasedOnParentNode(Class_ $parentClassNode, ClassMethod $classMethod): void
     {
         $firstParentConstructMethodNode = $this->findFirstParentConstructor($parentClassNode);
-        if ($firstParentConstructMethodNode === null) {
+        if (! $firstParentConstructMethodNode instanceof ClassMethod) {
             return;
         }
 
diff --git a/src/PhpParser/Node/Manipulator/ClassConstManipulator.php b/src/PhpParser/Node/Manipulator/ClassConstManipulator.php
index 06481d14b87b..1a2fba08f2a5 100644
--- a/src/PhpParser/Node/Manipulator/ClassConstManipulator.php
+++ b/src/PhpParser/Node/Manipulator/ClassConstManipulator.php
@@ -8,6 +8,7 @@
 use PhpParser\Node\Expr\ClassConstFetch;
 use PhpParser\Node\Stmt\Class_;
 use PhpParser\Node\Stmt\ClassConst;
+use PhpParser\Node\Stmt\Trait_;
 use Rector\Core\PhpParser\Node\BetterNodeFinder;
 use Rector\Core\PhpParser\Printer\BetterStandardPrinter;
 use Rector\NodeCollector\NodeCollector\ParsedNodeCollector;
@@ -70,7 +71,7 @@ public function getAllClassConstFetch(ClassConst $classConst): array
         $usedTraitNames = $this->classManipulator->getUsedTraits($classLike);
         foreach ($usedTraitNames as $name) {
             $name = $this->parsedNodeCollector->findTrait((string) $name);
-            if ($name === null) {
+            if (! $name instanceof Trait_) {
                 continue;
             }
 
diff --git a/src/PhpParser/Node/Manipulator/ClassMethodAssignManipulator.php b/src/PhpParser/Node/Manipulator/ClassMethodAssignManipulator.php
index 7394a600bc2d..153dd13d3d80 100644
--- a/src/PhpParser/Node/Manipulator/ClassMethodAssignManipulator.php
+++ b/src/PhpParser/Node/Manipulator/ClassMethodAssignManipulator.php
@@ -21,6 +21,7 @@
 use PhpParser\Node\Stmt\Foreach_;
 use PHPStan\Reflection\ObjectTypeMethodReflection;
 use PHPStan\Reflection\ParameterReflection;
+use PHPStan\Reflection\ParametersAcceptor;
 use PHPStan\Type\Type;
 use Rector\Core\PhpParser\Node\BetterNodeFinder;
 use Rector\Core\PhpParser\Node\NodeFactory;
@@ -326,7 +327,7 @@ private function isMethodCallWithReferencedArgument(Node $node, Variable $variab
 
         $variableName = $this->nodeNameResolver->getName($variable);
         $parametersAcceptor = $this->callReflectionResolver->resolveParametersAcceptor($methodReflection, $node);
-        if ($parametersAcceptor === null) {
+        if (! $parametersAcceptor instanceof ParametersAcceptor) {
             return false;
         }
 
@@ -376,7 +377,7 @@ private function isParameterReferencedInMethodReflection(New_ $new, int $argumen
         $methodReflection = $this->callReflectionResolver->resolveConstructor($new);
         $parametersAcceptor = $this->callReflectionResolver->resolveParametersAcceptor($methodReflection, $new);
 
-        if ($parametersAcceptor === null) {
+        if (! $parametersAcceptor instanceof ParametersAcceptor) {
             return false;
         }
 
diff --git a/src/PhpParser/Node/Manipulator/PropertyFetchManipulator.php b/src/PhpParser/Node/Manipulator/PropertyFetchManipulator.php
index 08d8f99afccb..3ebe062ffe81 100644
--- a/src/PhpParser/Node/Manipulator/PropertyFetchManipulator.php
+++ b/src/PhpParser/Node/Manipulator/PropertyFetchManipulator.php
@@ -9,6 +9,7 @@
 use PhpParser\Node\Expr\PropertyFetch;
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\Stmt\Class_;
+use PHPStan\Analyser\Scope;
 use PHPStan\Reflection\ReflectionProvider;
 use PHPStan\Type\ErrorType;
 use PHPStan\Type\MixedType;
@@ -142,7 +143,7 @@ public function isLocalPropertyFetch(Node $node): bool
     private function hasPublicProperty(PropertyFetch $propertyFetch, string $propertyName): bool
     {
         $nodeScope = $propertyFetch->getAttribute(AttributeKey::SCOPE);
-        if ($nodeScope === null) {
+        if (! $nodeScope instanceof Scope) {
             throw new ShouldNotHappenException();
         }
 
diff --git a/src/PhpParser/Node/Value/ValueResolver.php b/src/PhpParser/Node/Value/ValueResolver.php
index 731534fe4a07..13ac0d15b202 100644
--- a/src/PhpParser/Node/Value/ValueResolver.php
+++ b/src/PhpParser/Node/Value/ValueResolver.php
@@ -12,6 +12,7 @@
 use PhpParser\Node\Expr\ConstFetch;
 use PhpParser\Node\Scalar\MagicConst\Dir;
 use PhpParser\Node\Scalar\MagicConst\File;
+use PhpParser\Node\Stmt\ClassConst;
 use PHPStan\Type\Constant\ConstantArrayType;
 use PHPStan\Type\ConstantScalarType;
 use Rector\Core\Exception\ShouldNotHappenException;
@@ -226,7 +227,7 @@ private function resolveClassConstFetch(ClassConstFetch $classConstFetch)
 
         $classConstNode = $this->parsedNodeCollector->findClassConstant($class, $constant);
 
-        if ($classConstNode === null) {
+        if (! $classConstNode instanceof ClassConst) {
             // fallback to the name
             return $class . '::' . $constant;
         }
diff --git a/src/PhpParser/NodeTransformer.php b/src/PhpParser/NodeTransformer.php
index 2b9724e3a593..466b91c98985 100644
--- a/src/PhpParser/NodeTransformer.php
+++ b/src/PhpParser/NodeTransformer.php
@@ -34,7 +34,7 @@ final class NodeTransformer
     public function transformSprintfToArray(FuncCall $sprintfFuncCall): ?Array_
     {
         $sprintfStringAndArgs = $this->splitMessageAndArgs($sprintfFuncCall);
-        if ($sprintfStringAndArgs === null) {
+        if (! $sprintfStringAndArgs instanceof SprintfStringAndArgs) {
             return null;
         }
 
diff --git a/src/Rector/AbstractRector.php b/src/Rector/AbstractRector.php
index 58fc0fd4308e..8ba270e7284b 100644
--- a/src/Rector/AbstractRector.php
+++ b/src/Rector/AbstractRector.php
@@ -187,7 +187,7 @@ public function hasParentTypes(Node $node, array $types): bool
     public function hasParentType(Node $node, string $type): bool
     {
         $parent = $node->getAttribute(AttributeKey::PARENT_NODE);
-        if ($parent === null) {
+        if (! $parent instanceof Node) {
             return false;
         }
 
@@ -233,7 +233,7 @@ final public function enterNode(Node $node)
         $node = $this->refactor($node);
 
         // nothing to change → continue
-        if ($node === null) {
+        if (! $node instanceof Node) {
             return null;
         }
 
diff --git a/src/Reflection/ClassMethodReflectionFactory.php b/src/Reflection/ClassMethodReflectionFactory.php
index c1ca59272fc6..7c07dd6c67ea 100644
--- a/src/Reflection/ClassMethodReflectionFactory.php
+++ b/src/Reflection/ClassMethodReflectionFactory.php
@@ -30,7 +30,7 @@ public function createFromPHPStanTypeAndMethodName(Type $type, string $methodNam
                 }
 
                 $methodReflection = $this->createFromPHPStanTypeAndMethodName($unionedType, $methodName);
-                if ($methodReflection === null) {
+                if (! $methodReflection instanceof ReflectionMethod) {
                     continue;
                 }
 
diff --git a/src/Reflection/ClassMethodReflectionHelper.php b/src/Reflection/ClassMethodReflectionHelper.php
index fee501b613da..94d452fd0257 100644
--- a/src/Reflection/ClassMethodReflectionHelper.php
+++ b/src/Reflection/ClassMethodReflectionHelper.php
@@ -6,6 +6,7 @@
 
 use Nette\Utils\Reflection;
 use Rector\Core\PhpDoc\PhpDocTagsFinder;
+use ReflectionMethod;
 
 final class ClassMethodReflectionHelper
 {
@@ -33,7 +34,7 @@ public function __construct(
     public function extractTagsFromMethodDocBlock(string $class, string $method): array
     {
         $reflectedMethod = $this->classMethodReflectionFactory->createReflectionMethodIfExists($class, $method);
-        if ($reflectedMethod === null) {
+        if (! $reflectedMethod instanceof ReflectionMethod) {
             return [];
         }
 
diff --git a/src/Reflection/ClassReflectionToAstResolver.php b/src/Reflection/ClassReflectionToAstResolver.php
index d699c2bc40d1..e66bf66a85ee 100644
--- a/src/Reflection/ClassReflectionToAstResolver.php
+++ b/src/Reflection/ClassReflectionToAstResolver.php
@@ -39,7 +39,7 @@ public function __construct(Parser $parser, SmartFileSystem $smartFileSystem, Be
     public function getClassFromObjectType(ObjectType $objectType): ?Class_
     {
         $classReflection = $objectType->getClassReflection();
-        if ($classReflection === null) {
+        if (! $classReflection instanceof ClassReflection) {
             return null;
         }