From d48f790de5b2cbd09f277772ffd3a5fb187dcf60 Mon Sep 17 00:00:00 2001
From: thibaut severac <thib3113@gmail.com>
Date: Tue, 4 Jun 2019 13:40:27 +0200
Subject: [PATCH] check if window exist

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

diff --git a/lib/moment-duration-format.js b/lib/moment-duration-format.js
index 71fd82c..2972a96 100644
--- a/lib/moment-duration-format.js
+++ b/lib/moment-duration-format.js
@@ -1720,7 +1720,7 @@
 
     // Run feature tests for `Intl.NumberFormat#format`.
     var intlNumberFormatFormatter = function(number, locale, options) {
-        if (window.Intl && window.Intl.NumberFormat) {
+        if (window && window.Intl && window.Intl.NumberFormat) {
             return window.Intl.NumberFormat(locale, options).format(number);
         }
     };