From eeb83f8176febcc121ca85f63557558e12d13885 Mon Sep 17 00:00:00 2001
From: Iskren Chernev <iskren.chernev@gmail.com>
Date: Tue, 7 Apr 2015 19:39:51 -0700
Subject: [PATCH] Add duration.fn back

---
 src/lib/duration/create.js  |  2 ++
 src/test/moment/duration.js | 10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/src/lib/duration/create.js b/src/lib/duration/create.js
index c7a326aa1..15f05dead 100644
--- a/src/lib/duration/create.js
+++ b/src/lib/duration/create.js
@@ -73,6 +73,8 @@ export function createDuration (input, key) {
     return ret;
 }
 
+createDuration.fn = Duration.prototype;
+
 function parseIso (inp, sign) {
     // We'd normally use ~~inp for this, but unfortunately it also
     // converts floats to ints.
diff --git a/src/test/moment/duration.js b/src/test/moment/duration.js
index 14c2420df..5965303a7 100644
--- a/src/test/moment/duration.js
+++ b/src/test/moment/duration.js
@@ -557,3 +557,13 @@ test('JSON.stringify duration', function (assert) {
 
     assert.equal(JSON.stringify(d), '"' + d.toISOString() + '"', 'JSON.stringify on duration should return ISO string');
 });
+
+test('duration plugins', function (assert) {
+    var durationObject = moment.duration();
+    moment.duration.fn.foo = function (arg) {
+        assert.equal(this, durationObject);
+        assert.equal(arg, 5);
+    };
+    durationObject.foo(5);
+});
+
-- 
2.47.2