Make type hint for InputValueDefinitionNode#defaultValue nullable (#654)

Author: spawnia

phpstan-baseline.neon

@@ -810,11 +810,6 @@ parameters:
 			count: 1
 			path: src/Utils/ASTDefinitionBuilder.php
 
-		-
-			message: "#^Only booleans are allowed in an if condition, GraphQL\\\\Language\\\\AST\\\\BooleanValueNode\\|GraphQL\\\\Language\\\\AST\\\\EnumValueNode\\|GraphQL\\\\Language\\\\AST\\\\FloatValueNode\\|GraphQL\\\\Language\\\\AST\\\\IntValueNode\\|GraphQL\\\\Language\\\\AST\\\\ListValueNode\\|GraphQL\\\\Language\\\\AST\\\\NullValueNode\\|GraphQL\\\\Language\\\\AST\\\\ObjectValueNode\\|GraphQL\\\\Language\\\\AST\\\\StringValueNode\\|GraphQL\\\\Language\\\\AST\\\\VariableNode given\\.$#"
-			count: 1
-			path: src/Utils/ASTDefinitionBuilder.php
-
 		-
 			message: "#^Anonymous function should have native return typehint \"bool\"\\.$#"
 			count: 2

src/Language/AST/InputValueDefinitionNode.php

@@ -15,7 +15,7 @@ class InputValueDefinitionNode extends Node
     /** @var NamedTypeNode|ListTypeNode|NonNullTypeNode */
     public $type;
 
-    /** @var VariableNode|NullValueNode|IntValueNode|FloatValueNode|StringValueNode|BooleanValueNode|EnumValueNode|ListValueNode|ObjectValueNode */
+    /** @var VariableNode|NullValueNode|IntValueNode|FloatValueNode|StringValueNode|BooleanValueNode|EnumValueNode|ListValueNode|ObjectValueNode|null */
     public $defaultValue;
 
     /** @var DirectiveNode[] */

src/Utils/ASTDefinitionBuilder.php

@@ -472,7 +472,7 @@ public function buildInputField(InputValueDefinitionNode $value) : array
             'astNode' => $value,
         ];
 
-        if ($value->defaultValue) {
+        if ($value->defaultValue !== null) {
             $config['defaultValue'] = $value->defaultValue;
         }