[DowngradePhp80] Fix Type boolan and array on DowngradeNamedArgumentR…

…ector (#279)

* [DowngradePhp80] Fix Type boolan and array

* fix

rules/DowngradePhp80/Rector/MethodCall/DowngradeNamedArgumentRector.php

@@ -13,13 +13,11 @@
 use PhpParser\Node\Expr\StaticCall;
 use PhpParser\Node\Identifier;
 use PhpParser\Node\Name;
-use PhpParser\Node\Param;
 use PHPStan\Reflection\FunctionReflection;
 use PHPStan\Reflection\MethodReflection;
 use PHPStan\Reflection\ParameterReflection;
-use PHPStan\Type\NullType;
 use PHPStan\Type\Type;
-use Rector\Core\Exception\NotImplementedYetException;
+use PHPStan\Type\VerbosityLevel;
 use Rector\Core\PHPStan\Reflection\CallReflectionResolver;
 use Rector\Core\Rector\AbstractRector;
 use Rector\TypeDeclaration\NodeTypeAnalyzer\CallTypeAnalyzer;
@@ -174,7 +172,6 @@ private function replacePreviousArgs(
                 continue;
             }
 
-            // @todo convert type to value
             $defaultValue = $this->mapPHPStanTypeToExpr($parameterReflection->getDefaultValue());
             if (! $defaultValue instanceof Expr) {
                 continue;
@@ -217,10 +214,6 @@ private function mapPHPStanTypeToExpr(?Type $type): ?Expr
             return null;
         }
 
-        if ($type instanceof NullType) {
-            return new ConstFetch(new Name('null'));
-        }
-
-        throw new NotImplementedYetException();
+        return new ConstFetch(new Name($type->describe(VerbosityLevel::value())));
     }
 }