From ece98f980cc9dedbab099bd8d4fc1540a218bb9d Mon Sep 17 00:00:00 2001
From: Jacob Thornton <jacobthornton@gmail.com>
Date: Sat, 14 Nov 2015 20:43:45 -0800
Subject: [PATCH] add undefined for now

---
 js/src/tooltip.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/src/tooltip.js b/js/src/tooltip.js
index 173ee592ec..6bd17353dd 100644
--- a/js/src/tooltip.js
+++ b/js/src/tooltip.js
@@ -16,7 +16,7 @@ const Tooltip = (($) => {
    * Check for Tether dependency
    * Tether - http://github.hubspot.com/tether/
    */
-  if (!window.Tether) {
+  if (window.Tether === undefined) {
     throw new Error('Bootstrap tooltips require Tether (http://github.hubspot.com/tether/)')
   }