From 8430e7e275e527497a52647683226f7460e053ec Mon Sep 17 00:00:00 2001
From: Jonathan Ong <jonathanrichardong@gmail.com>
Date: Sun, 28 Feb 2016 16:13:52 -0800
Subject: [PATCH] deprecate app.experimental

---
 lib/application.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/application.js b/lib/application.js
index 36cebb6..b544aee 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -119,6 +119,9 @@ app.use = function(fn){
  */
 
 app.callback = function(){
+  if (this.experimental) {
+    console.error('Experimental ES7 Async Function support is deprecated. Please look into Koa v2 as the middleware signature has changed.')
+  }
   var fn = this.experimental
     ? compose_es7(this.middleware)
     : co.wrap(compose(this.middleware));