From a06789afcc5b53c34d19d2d9d35c3b91c705d91c Mon Sep 17 00:00:00 2001
From: cel <cel@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519>
Date: Fri, 5 May 2017 18:52:46 -1000
Subject: check ref is string

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

(limited to 'lib')

diff --git a/lib/util.js b/lib/util.js
index 0a6356c..90fc55a 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -6,6 +6,7 @@ var u = exports
 u.ssbRefRegex = /((?:@|%|&|ssb:\/\/%)[A-Za-z0-9\/+]{43}=\.[\w\d]+)/g
 
 u.isRef = function (str) {
+  if (!str) return false
   u.ssbRefRegex.lastIndex = 0
   return u.ssbRefRegex.test(str)
 }
-- 
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