Tighten check for detecting if Moment is installed (#6113)

diff --git a/src/adapters/adapter.moment.js b/src/adapters/adapter.moment.js
index e028b52f3aeebc460742a32f10d4fee5ec246b61..5d7c1f3103dbea643058751adbddc4d4c35e2802 100644 (file)
--- a/src/adapters/adapter.moment.js
+++ b/src/adapters/adapter.moment.js
@@ -18,7 +18,7 @@ var FORMATS = {
        year: 'YYYY'
 };
 
-adapters._date.override(moment ? {
+adapters._date.override(typeof moment === 'function' ? {
        _id: 'moment', // DEBUG ONLY
 
        formats: function() {