1 files changed, 25 insertions, 0 deletions
diff --git a/node_modules/moment/src/lib/utils/is-calendar-spec.js b/node_modules/moment/src/lib/utils/is-calendar-spec.js
new file mode 100644
index 0000000..e8b6d38
--- /dev/null
+++ b/node_modules/moment/src/lib/utils/is-calendar-spec.js
@@ -0,0 +1,25 @@
+import isObjectEmpty from './is-object-empty';
+import hasOwnProp from './has-own-prop';
+import isObject from './is-object';
+
+export default function isCalendarSpec(input) {
+    var objectTest = isObject(input) && !isObjectEmpty(input),
+        propertyTest = false,
+        properties = [
+            'sameDay',
+            'nextDay',
+            'lastDay',
+            'nextWeek',
+            'lastWeek',
+            'sameElse',
+        ],
+        i,
+        property;
+
+    for (i = 0; i < properties.length; i += 1) {
+        property = properties[i];
+        propertyTest = propertyTest || hasOwnProp(input, property);
+    }
+
+    return objectTest && propertyTest;
+}