type definitions: Use consistent order for public fields

Replicates graphql/graphql-js@7782190

Author: Cito

src/graphql/type/definition.py

@@ -415,11 +415,11 @@ def assert_scalar_type(type_: Any) -> GraphQLScalarType:
 class GraphQLField:
     """Definition of a GraphQL field"""
 
+    description: Optional[str]
     type: "GraphQLOutputType"
     args: GraphQLArgumentMap
     resolve: Optional["GraphQLFieldResolver"]
     subscribe: Optional["GraphQLFieldResolver"]
-    description: Optional[str]
     deprecation_reason: Optional[str]
     ast_node: Optional[FieldDefinitionNode]
 
@@ -490,11 +490,11 @@ def __eq__(self, other):
 
     def to_kwargs(self) -> Dict[str, Any]:
         return dict(
+            description=self.description,
             type_=self.type,
             args=self.args.copy() if self.args else None,
             resolve=self.resolve,
             subscribe=self.subscribe,
-            description=self.description,
             deprecation_reason=self.deprecation_reason,
             ast_node=self.ast_node,
         )
@@ -550,9 +550,9 @@ class GraphQLResolveInfo(NamedTuple):
 class GraphQLArgument:
     """Definition of a GraphQL argument"""
 
+    description: Optional[str]
     type: "GraphQLInputType"
     default_value: Any
-    description: Optional[str]
     out_name: Optional[str]  # for transforming names (extension of GraphQL.js)
     ast_node: Optional[InputValueDefinitionNode]
 
@@ -589,9 +589,9 @@ def __eq__(self, other):
 
     def to_kwargs(self) -> Dict[str, Any]:
         return dict(
+            description=self.description,
             type_=self.type,
             default_value=self.default_value,
-            description=self.description,
             out_name=self.out_name,
             ast_node=self.ast_node,
         )

src/graphql/type/schema.py

@@ -151,6 +151,13 @@ def __init__(
 
             self._validation_errors = None
 
+        self.ast_node = ast_node
+        self.extension_ast_nodes = (
+            cast(FrozenList[ast.SchemaExtensionNode], extension_ast_nodes)
+            if extension_ast_nodes
+            else None
+        )
+
         self.query_type = query
         self.mutation_type = mutation
         self.subscription_type = subscription
@@ -160,12 +167,6 @@ def __init__(
             if directives is None
             else cast(FrozenList[GraphQLDirective], directives)
         )
-        self.ast_node = ast_node
-        self.extension_ast_nodes = (
-            cast(FrozenList[ast.SchemaExtensionNode], extension_ast_nodes)
-            if extension_ast_nodes
-            else None
-        )
 
         # Build type map now to detect any errors within this schema.
         initial_types: List[Optional[GraphQLNamedType]] = [