clean up

Author: KaiyueGuan

lib/__tests__.js

@@ -3,9 +3,8 @@
 const Test = require('tape');
 const graphql = require('graphql');
 const gql = require('graphql-tag');
-const { SchemaDirectiveVisitor, MapperKind, mapSchema, getDirective} = require('@graphql-tools/utils');
+const { MapperKind, mapSchema, getDirective} = require('@graphql-tools/utils');
 const GraphQLComponent = require('.');
-const {defaultFieldResolver} = require("graphql/index");
 
 Test('GraphQLComponent instance API (getters/setters)', (t) => {
 
@@ -1113,7 +1112,8 @@ Test('federated schema can include custom directive', (t) => {
   function customDirective(directiveName) {
     return (schema) => mapSchema(schema, {
       [MapperKind.OBJECT_FIELD]: (fieldConfig) => {
-        const directive = getDirective(schema, fieldConfig, directiveName)?.[0]
+        const directives = getDirective(schema, fieldConfig, directiveName)
+        const directive = directives && directives[0]
         if (directive) {
           return {
             ...fieldConfig,

package.json

@@ -39,7 +39,7 @@
     "apollo-server": "^3.13.0",
     "casual": "^1.6.0",
     "eslint": "^6.5.1",
-    "graphql": "^16.0.0",
+    "graphql": "^16.8.1",
     "graphql-tag": "^2.12.4",
     "nyc": "^14.1.1",
     "sinon": "^12.0.1",