Make onError optional in SDLValidationContext (#2169)

graphql · Sep 14, 2019 · a5e0b64 · a5e0b64
1 parent 38bd337
commit a5e0b64
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/validation/ValidationContext.js b/src/validation/ValidationContext.js
@@ -149,7 +149,7 @@ export class SDLValidationContext extends ASTValidationContext {
   constructor(
     ast: DocumentNode,
     schema: ?GraphQLSchema,
-    onError: (err: GraphQLError) => void,
+    onError?: (err: GraphQLError) => void,
   ): void {
     super(ast, onError);
     this._schema = schema;