From 97f1ea46cd5a2e06027c96545bb58489cad32de9 Mon Sep 17 00:00:00 2001
From: Benjie Gillam <benjie@jemjie.com>
Date: Fri, 3 Feb 2023 09:43:40 +0000
Subject: [PATCH] Treat schema with no operation types as if it uses common
 names

---
 src/utilities/printSchema.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/utilities/printSchema.ts b/src/utilities/printSchema.ts
index 79234bb044..d9a8ce71d5 100644
--- a/src/utilities/printSchema.ts
+++ b/src/utilities/printSchema.ts
@@ -115,6 +115,15 @@ function isSchemaOfCommonNames(schema: GraphQLSchema): boolean {
   const mutationOperationType = schema.getMutationType() || null;
   const subscriptionOperationType = schema.getSubscriptionType() || null;
 
+  // Special case for when there are no operation types
+  if (
+    !queryOperationType &&
+    !mutationOperationType &&
+    !subscriptionOperationType
+  ) {
+    return true;
+  }
+
   const queryType = schema.getType('Query') || null;
   const mutationType = schema.getType('Mutation') || null;
   const subscriptionType = schema.getType('Subscription') || null;