From 140bb52199efa5bbcdda95a5f1536977cd27d3ec Mon Sep 17 00:00:00 2001
From: Stefan Penner <stefan.penner@gmail.com>
Date: Wed, 28 Jan 2015 00:15:07 -0500
Subject: [PATCH] if no commit occurred, sha will be null.

---
 index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 88d9f16..3afb993 100644
--- a/index.js
+++ b/index.js
@@ -12,5 +12,7 @@ module.exports = function version(shaLength, root) {
   }
 
   var packageVersion  = require(path.join(projectPath, 'package.json')).version;
-  return packageVersion + '.' + info.sha.slice(0, shaLength || 8);
+  var sha = info.sha || '';
+
+  return packageVersion + '.' + sha.slice(0, shaLength || 8);
 };