Merge pull request #42 from OlegIlyenko/master

Directive name is not-null

Author: dschafer

src/type/__tests__/introspection.js

@@ -790,9 +790,14 @@ describe('Introspection', () => {
                   args: [],
                   type: {
                     __typename: '__Type',
-                    kind: 'SCALAR',
-                    name: 'String',
-                    ofType: null,
+                    kind: 'NON_NULL',
+                    name: null,
+                    ofType: {
+                      __typename: '__Type',
+                      kind: 'SCALAR',
+                      name: 'String',
+                      ofType: null
+                    }
                   },
                   isDeprecated: false,
                   deprecationReason: null

src/type/introspection.js

@@ -60,7 +60,7 @@ export var __Schema = new GraphQLObjectType({
 var __Directive = new GraphQLObjectType({
   name: '__Directive',
   fields: () => ({
-    name: { type: GraphQLString },
+    name: { type: new GraphQLNonNull(GraphQLString) },
     description: { type: GraphQLString },
     args: {
       type: