enable queryCostPlugin for northwind example

Author: nodkz

examples/northwind/index.ts

@@ -1,9 +1,11 @@
 import dedent from 'dedent';
 import schema from './schema';
+import { initQueryComplexityPlugin } from './queryCostPlugin';
 
 export default {
   uri: '/northwind',
   schema: schema,
+  plugins: [initQueryComplexityPlugin({ schema })],
   title: 'Northwind: complex schema with 8 models',
   description:
     'This is a sample data of some trading company, which consists from 8 models. All models has cross-relations to each other. This schema used in <b><a href="https://nodkz.github.io/relay-northwind/" target="_blank">Relay example app <span class="glyphicon glyphicon-new-window"></span></a></b>',

examples/northwind/queryCostPlugin.ts

@@ -9,12 +9,12 @@ import { separateOperations, GraphQLSchema } from 'graphql';
 
 export function initQueryComplexityPlugin(opts: {
   schema: GraphQLSchema;
-  maxComplexity: number;
+  maxComplexity?: number;
 }): ApolloServerPlugin {
   return {
     requestDidStart: () => {
       let complexity = 0;
-      const maxComplexity = opts.maxComplexity || 1000;
+      const maxComplexity = opts.maxComplexity || 10000;
       return {
         didResolveOperation({ request, document }) {
           /**