From e60352d62440b332505e95de24c9bf09f1b58280 Mon Sep 17 00:00:00 2001
From: Kenneth Bambridge <kbambridge1@gmail.com>
Date: Sat, 13 May 2017 01:55:16 -0400
Subject: [PATCH] Fix exception when calling init for server with no middleware

---
 index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/index.js b/index.js
index f9894aa..765b705 100644
--- a/index.js
+++ b/index.js
@@ -47,6 +47,9 @@ function middlewareExists(app, name) {
 	//From http://stackoverflow.com/questions/26304234/check-if-a-given-middleware-is-being-used
 	//filter checks each element, and !! converts filter's return type (an array of booleans) to 
 	//a boolean type
+    if (!app._router) {
+        return false
+    }
 	return !!app._router.stack.filter(function (layer) { 
 		return layer && layer.handle && layer.handle.name === name; 
     }).length;