From 020e355c743942124564e55bb2232132b89c2889 Mon Sep 17 00:00:00 2001
From: AJ ONeal <awesome@coolaj86.com>
Date: Mon, 8 Aug 2016 09:03:25 -0600
Subject: [PATCH] bugfix mentioned in #45 don't access a proptery that doesn't
 exist

---
 lib/core.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/core.js b/lib/core.js
index 37469ba..89669ae 100644
--- a/lib/core.js
+++ b/lib/core.js
@@ -350,7 +350,7 @@ function getOrCreateDomainCertificate(args, defaults, handlers) {
   }
 
   return fetchFromConfigLiveDir(args).then(function (certs) {
-    var halfLife = (certs.expiresAt - certs.issuedAt) / 2;
+    var halfLife = certs && ((certs.expiresAt - certs.issuedAt) / 2);
 
     if (!certs || (Date.now() - certs.issuedAt) > halfLife) {
       // There is no cert available