Add missing file from graphql#3361

Author: IvanGoncharov

integrationTests/node/index.cjs

@@ -0,0 +1,26 @@
+const assert = require('assert');
+const { readFileSync } = require('fs');
+
+const { graphqlSync } = require('graphql');
+const { buildSchema } = require('graphql/utilities');
+const { version } = require('graphql/version');
+
+assert.deepStrictEqual(
+  version,
+  JSON.parse(readFileSync('./node_modules/graphql/package.json')).version,
+);
+
+const schema = buildSchema('type Query { hello: String }');
+
+const result = graphqlSync({
+  schema,
+  source: '{ hello }',
+  rootValue: { hello: 'world' },
+});
+
+assert.deepStrictEqual(result, {
+  data: {
+    __proto__: null,
+    hello: 'world',
+  },
+});