fix GraphQLWrappingType

GraphQLNonNull wrapper can only be applies to nullable types related: graphql#3597 see also: graphql#3617 (comment)
yaacovCR · May 31, 2022 · a5213b4 · a5213b4
1 parent 338e3dd
commit a5213b4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/type/definition.ts b/src/type/definition.ts
@@ -395,7 +395,7 @@ export class GraphQLNonNull<T extends GraphQLNullableType> {
 
 export type GraphQLWrappingType =
   | GraphQLList<GraphQLType>
-  | GraphQLNonNull<GraphQLType>;
+  | GraphQLNonNull<GraphQLNullableType>;
 
 export function isWrappingType(type: unknown): type is GraphQLWrappingType {
   return isListType(type) || isNonNullType(type);