From 2dc0f43b3d077cb5f629a8a8f627e39ef75e33f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20H=C3=A4nisch?=
 <simonhaenisch@users.noreply.github.com>
Date: Tue, 25 Feb 2020 01:06:42 +0100
Subject: [PATCH] fix(koa): return type of callback method (#42551)

---
 types/koa/index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/types/koa/index.d.ts b/types/koa/index.d.ts
index 85a75a92aa..cd35fc7e3a 100644
--- a/types/koa/index.d.ts
+++ b/types/koa/index.d.ts
@@ -513,7 +513,7 @@ declare class Application<
      * Return a request handler callback
      * for node's native http/http2 server.
      */
-    callback(): (req: IncomingMessage | Http2ServerRequest, res: ServerResponse | Http2ServerResponse) => void;
+    callback(): (req: IncomingMessage | Http2ServerRequest, res: ServerResponse | Http2ServerResponse) => Promise<void>;
 
     /**
      * Initialize a new context.