From fe0ff9d842bc3bbf6090f7bf96ea4eaeda5a1efa Mon Sep 17 00:00:00 2001
From: Tim Wood <washwithcare@gmail.com>
Date: Tue, 12 May 2015 09:09:19 -0500
Subject: [PATCH] Log an error if moment timezone was already loaded. #212

---
 moment-timezone.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/moment-timezone.js b/moment-timezone.js
index 75271bbd..e0d03d5a 100644
--- a/moment-timezone.js
+++ b/moment-timezone.js
@@ -19,7 +19,10 @@
 	"use strict";
 
 	// Do not load moment-timezone a second time.
-	if (moment.tz !== undefined) { return moment; }
+	if (moment.tz !== undefined) {
+		logError('Moment Timezone ' + moment.tz.version + ' was already loaded ' + (moment.tz.dataVersion ? 'with data from ' : 'without any data') + moment.tz.dataVersion);
+		return moment;
+	}
 
 	var VERSION = "0.3.1",
 		zones = {},