add builder for InterfaceTypeDefinition

Author: simonljus

src/graphql.ts

@@ -4,6 +4,7 @@ import type {
   DefinitionNode,
   DocumentNode,
   GraphQLSchema,
+  InterfaceTypeDefinitionNode,
   ListTypeNode,
   NameNode,
   NamedTypeNode,
@@ -23,6 +24,7 @@ export const isNamedType = (typ?: TypeNode): typ is NamedTypeNode => typ?.kind =
 export const isInput = (kind: string) => kind.includes('Input');
 
 type ObjectTypeDefinitionFn = (node: ObjectTypeDefinitionNode) => any;
+type InterfaceTypeDefinitionFn = (node: InterfaceTypeDefinitionNode) => any;
 
 export function ObjectTypeDefinitionBuilder(useObjectTypes: boolean | undefined, callback: ObjectTypeDefinitionFn): ObjectTypeDefinitionFn | undefined {
   if (!useObjectTypes)
@@ -35,7 +37,17 @@ export function ObjectTypeDefinitionBuilder(useObjectTypes: boolean | undefined,
   };
 }
 
-export function topologicalSortAST(schema: GraphQLSchema, ast: DocumentNode): DocumentNode {
+export const InterfaceTypeDefinitionBuilder = (
+  useInterfaceTypes: boolean | undefined,
+  callback: InterfaceTypeDefinitionFn
+): InterfaceTypeDefinitionFn | undefined => {
+  if (!useInterfaceTypes) return undefined;
+  return node => {
+    return callback(node);
+  };
+};
+
+export const topologicalSortAST = (schema: GraphQLSchema, ast: DocumentNode): DocumentNode => {
   const dependencyGraph = new Graph();
   const targetKinds = [
     'ObjectTypeDefinition',