Fix build

Author: ondrejmirtes

src/Rules/Symfony/InvalidArgumentDefaultValueRule.php

@@ -46,7 +46,7 @@ public function processNode(Node $node, Scope $scope): array
 		}
 
 		$modeType = isset($node->getArgs()[1]) ? $scope->getType($node->getArgs()[1]->value) : new NullType();
-		if ($modeType instanceof NullType) {
+		if ($modeType->isNull()->yes()) {
 			$modeType = new ConstantIntegerType(2); // InputArgument::OPTIONAL
 		}
 		$modeTypes = TypeUtils::getConstantScalars($modeType);

src/Rules/Symfony/InvalidOptionDefaultValueRule.php

@@ -48,7 +48,7 @@ public function processNode(Node $node, Scope $scope): array
 		}
 
 		$modeType = isset($node->getArgs()[2]) ? $scope->getType($node->getArgs()[2]->value) : new NullType();
-		if ($modeType instanceof NullType) {
+		if ($modeType->isNull()->yes()) {
 			$modeType = new ConstantIntegerType(1); // InputOption::VALUE_NONE
 		}
 		$modeTypes = TypeUtils::getConstantScalars($modeType);

src/Type/Symfony/EnvelopeReturnTypeExtension.php

@@ -7,12 +7,12 @@
 use PHPStan\Reflection\MethodReflection;
 use PHPStan\Type\Accessory\AccessoryArrayListType;
 use PHPStan\Type\ArrayType;
-use PHPStan\Type\Constant\ConstantStringType;
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\Generic\GenericClassStringType;
 use PHPStan\Type\IntegerType;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
 use function count;
 
 final class EnvelopeReturnTypeExtension implements DynamicMethodReturnTypeExtension
@@ -42,11 +42,16 @@ public function getTypeFromMethodCall(
 		}
 
 		$argType = $scope->getType($methodCall->getArgs()[0]->value);
-		if (!$argType instanceof ConstantStringType) {
+		if (count($argType->getConstantStrings()) === 0) {
 			return AccessoryArrayListType::intersectWith(new ArrayType(new IntegerType(), new ObjectType('Symfony\Component\Messenger\Stamp\StampInterface')));
 		}
 
-		return AccessoryArrayListType::intersectWith(new ArrayType(new IntegerType(), new ObjectType($argType->getValue())));
+		$objectTypes = [];
+		foreach ($argType->getConstantStrings() as $constantString) {
+			$objectTypes[] = new ObjectType($constantString->getValue());
+		}
+
+		return AccessoryArrayListType::intersectWith(new ArrayType(new IntegerType(), TypeCombinator::union(...$objectTypes)));
 	}
 
 }

src/Type/Symfony/SerializerDynamicReturnTypeExtension.php

@@ -6,11 +6,12 @@
 use PHPStan\Analyser\Scope;
 use PHPStan\Reflection\MethodReflection;
 use PHPStan\Type\ArrayType;
-use PHPStan\Type\Constant\ConstantStringType;
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
 use PHPStan\Type\MixedType;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
+use PHPStan\Type\TypeCombinator;
+use function count;
 use function substr;
 
 class SerializerDynamicReturnTypeExtension implements DynamicMethodReturnTypeExtension
@@ -45,13 +46,16 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 		}
 
 		$argType = $scope->getType($methodCall->getArgs()[1]->value);
-		if (!$argType instanceof ConstantStringType) {
+		if (count($argType->getConstantStrings()) === 0) {
 			return new MixedType();
 		}
 
-		$objectName = $argType->getValue();
+		$types = [];
+		foreach ($argType->getConstantStrings() as $constantString) {
+			$types[] = $this->getType($constantString->getValue());
+		}
 
-		return $this->getType($objectName);
+		return TypeCombinator::union(...$types);
 	}
 
 	private function getType(string $objectName): Type