From f78ae917ae36bc62064698e7f0eae8fb14bcb8ea Mon Sep 17 00:00:00 2001
From: Jan Melcher <mail@jan-melcher.de>
Date: Wed, 21 Jun 2017 10:42:38 +0200
Subject: [PATCH] get[Mutation|Subscription]Type() are nullable

According to [`schema.js`](https://github.com/graphql/graphql-js/blob/master/src/type/schema.js#L160), `GraphQLSchema.getMutationType()` and `getSubscriptionType()` may return `undefined`, so the types should reflect that.
---
 types/graphql/type/schema.d.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/types/graphql/type/schema.d.ts b/types/graphql/type/schema.d.ts
index 0f02cd78af..f4f4a99d58 100644
--- a/types/graphql/type/schema.d.ts
+++ b/types/graphql/type/schema.d.ts
@@ -49,8 +49,8 @@ export class GraphQLSchema {
     constructor(config: GraphQLSchemaConfig)
 
     getQueryType(): GraphQLObjectType;
-    getMutationType(): GraphQLObjectType;
-    getSubscriptionType(): GraphQLObjectType;
+    getMutationType(): GraphQLObjectType|undefined;
+    getSubscriptionType(): GraphQLObjectType|undefined;
     getTypeMap(): { [typeName: string]: GraphQLNamedType };
     getType(name: string): GraphQLType;
     getPossibleTypes(abstractType: GraphQLAbstractType): Array<GraphQLObjectType>;