From d911dd4f1c48e5e4b26bddbe46b2fc3be4b0eb18 Mon Sep 17 00:00:00 2001
From: Konstantin Pelepelin <kpelepelin@contractor.ea.com>
Date: Thu, 3 Oct 2019 18:30:25 +0300
Subject: [PATCH] Make TypeVisitor result type nullable

---
 src/transforms/visitSchema.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/transforms/visitSchema.ts b/src/transforms/visitSchema.ts
index 8d454fd25c2..2d463153a33 100644
--- a/src/transforms/visitSchema.ts
+++ b/src/transforms/visitSchema.ts
@@ -33,7 +33,7 @@ export type SchemaVisitor = { [key: string]: TypeVisitor };
 export type TypeVisitor = (
   type: GraphQLType,
   schema: GraphQLSchema,
-) => GraphQLNamedType;
+) => GraphQLNamedType | null | undefined;
 
 export function visitSchema(
   schema: GraphQLSchema,
@@ -57,7 +57,7 @@ export function visitSchema(
       const specifiers = getTypeSpecifiers(type, schema);
       const typeVisitor = getVisitor(visitor, specifiers);
       if (typeVisitor) {
-        const result: GraphQLNamedType | null | undefined = typeVisitor(
+        const result = typeVisitor(
           type,
           schema,
         );