From 70834f9f7034a1dcc16cd3d8d85712c105637739 Mon Sep 17 00:00:00 2001
From: Yusuke Wada <yusuke@kamawada.com>
Date: Sat, 29 Mar 2025 08:47:19 +0900
Subject: [PATCH] refactor(zod-openapi): fix type errors (#1078)

* refactor(zod-openapi): fix type errors

* fix types
---
 packages/zod-openapi/src/index.ts | 32 +++++++++++++++++--------------
 1 file changed, 18 insertions(+), 14 deletions(-)

diff --git a/packages/zod-openapi/src/index.ts b/packages/zod-openapi/src/index.ts
index e9e90c1f..f42a2f68 100644
--- a/packages/zod-openapi/src/index.ts
+++ b/packages/zod-openapi/src/index.ts
@@ -198,22 +198,26 @@ type ExtractStatusCode<T extends RouteConfigStatusCode> = T extends keyof Status
 type DefinedStatusCodes<R extends RouteConfig> = keyof R['responses'] & RouteConfigStatusCode
 export type RouteConfigToTypedResponse<R extends RouteConfig> =
   | {
-      [Status in DefinedStatusCodes<R>]: undefined extends R['responses'][Status]['content']
-        ? TypedResponse<{}, ExtractStatusCode<Status>, string>
-        : ReturnJsonOrTextOrResponse<
-            keyof R['responses'][Status]['content'],
-            ExtractContent<R['responses'][Status]['content']>,
-            Status
-          >
+      [Status in DefinedStatusCodes<R>]: R['responses'][Status] extends { content: infer Content }
+        ? undefined extends Content
+          ? never
+          : ReturnJsonOrTextOrResponse<
+              keyof R['responses'][Status]['content'],
+              ExtractContent<R['responses'][Status]['content']>,
+              Status
+            >
+        : TypedResponse<{}, ExtractStatusCode<Status>, string>
     }[DefinedStatusCodes<R>]
   | ('default' extends keyof R['responses']
-      ? undefined extends R['responses']['default']['content']
-        ? TypedResponse<{}, Exclude<StatusCode, ExtractStatusCode<DefinedStatusCodes<R>>>, string>
-        : ReturnJsonOrTextOrResponse<
-            keyof R['responses']['default']['content'],
-            ExtractContent<R['responses']['default']['content']>,
-            Exclude<StatusCode, ExtractStatusCode<DefinedStatusCodes<R>>>
-          >
+      ? R['responses']['default'] extends { content: infer Content }
+        ? undefined extends Content
+          ? never
+          : ReturnJsonOrTextOrResponse<
+              keyof Content,
+              ExtractContent<Content>,
+              Exclude<StatusCode, ExtractStatusCode<DefinedStatusCodes<R>>>
+            >
+        : TypedResponse<{}, Exclude<StatusCode, ExtractStatusCode<DefinedStatusCodes<R>>>, string>
       : never)
 
 export type Hook<T, E extends Env, P extends string, R> = (