From d58b823dd28a43c24d89dcd86733e392fd47713a Mon Sep 17 00:00:00 2001
From: iahs <iahs@users.noreply.github.com>
Date: Thu, 7 Aug 2014 22:11:29 -0400
Subject: [PATCH] Allow hiding stack trace

Fixes error when stack trace is hidden with ```Error.stackTraceLimit = 0```
Potentially provides a fix to #64
---
 lib/utils.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/utils.js b/lib/utils.js
index 5c72990db..1d4c5bf07 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -205,6 +205,8 @@ exports.betterErrors = function (assertion) {
         );
         var spacing = (multiline ? '\n' : ' ');
         e._message = e.message;
+        // avoids error when stack trace is hidden with Error.stackTraceLimit
+        e.stack = e.stack || '';
         e.stack = (
             e.name + ':' + spacing +
             actual + spacing + e.operator + spacing +