From f9545880a43297efb5023df915be0bec0f13932c Mon Sep 17 00:00:00 2001
From: Mickael Burguet <mickael.burguet@ssense.com>
Date: Tue, 26 Jul 2016 11:34:09 -0400
Subject: [PATCH] [restify] Next handler - Change ifError to optional

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

diff --git a/restify/restify.d.ts b/restify/restify.d.ts
index fdb64f5e34..d8e1a37576 100644
--- a/restify/restify.d.ts
+++ b/restify/restify.d.ts
@@ -500,7 +500,7 @@ declare module "restify" {
 
   interface Next {
     (err?: any): any;
-    ifError: (err?: any) => any;
+    ifError?: (err?: any) => any;
   }
 
   interface RequestHandler {