From afccedbac6f724c547d8c6df52464eeb3c716cb9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Le=20Ninivin?= <cedric.leninivin@tiolive.com>
Date: Wed, 18 Jan 2017 10:28:35 +0000
Subject: [PATCH] jio.util.stringify: Add support for undefined values

`jIO.util.stringify` was raising if the value of an object was undefined, this changes fix it and provides the same behaviour as the standard `JSON.stringify`

/reviewed-on https://lab.nexedi.com/nexedi/jio/merge_requests/41
---
 src/jio.js       | 3 +++
 test/jio/util.js | 1 +
 2 files changed, 4 insertions(+)

diff --git a/src/jio.js b/src/jio.js
index 2e07d37..9a5b054 100644
--- a/src/jio.js
+++ b/src/jio.js
@@ -124,6 +124,9 @@
       i,
       value,
       result_list;
+    if (obj === undefined) {
+      return undefined;
+    }
     if (obj.constructor === Object) {
       key_list = Object.keys(obj).sort();
       result_list = [];
diff --git a/test/jio/util.js b/test/jio/util.js
index 910dc96..b5d554f 100644
--- a/test/jio/util.js
+++ b/test/jio/util.js
@@ -20,6 +20,7 @@
           '"2006-01-02T15:04:05.000Z"');
     equal(str({ x: 5, y: 6, z: 7 }), '{"x":5,"y":6,"z":7}');
     equal(str({ z: 7, y: 6, x: 5 }), '{"x":5,"y":6,"z":7}');
+    equal(str({ z: "", y: undefined, x: 5 }), '{"x":5,"z":""}');
     equal(str(Object.create(null, { x: { value: 'x', enumerable: false },
                                     y: { value: 'y', enumerable: true } })),
           '{"y":"y"}');
-- 
2.25.1