From 75cdfaa7acbabb3bb9ddca9697b37482d69ce317 Mon Sep 17 00:00:00 2001
From: Sumanta <nandisumanta0@gmail.com>
Date: Thu, 23 Feb 2017 17:54:43 +0530
Subject: [PATCH] added null check for extend method

---
 lib/short.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/short.js b/lib/short.js
index 1520916..328d7de 100644
--- a/lib/short.js
+++ b/lib/short.js
@@ -147,6 +147,7 @@ exports.list = function() {
  */
 
 var extend = function(original, updates) {
+  original = original || {};
   Object.keys(updates).forEach(function(key) {
     original[key] = updates[key];
   });