From 1423dcb619477920067a34a950f4106beeb9832f Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Wed, 20 Aug 2014 01:24:33 -0700
Subject: [PATCH] `_.sortBy` should not error on nullish elements when sorting
 by multiple properties.

---
 lodash.js    | 2 +-
 test/test.js | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/lodash.js b/lodash.js
index 9957c7bcd..a22315ea8 100644
--- a/lodash.js
+++ b/lodash.js
@@ -5656,7 +5656,7 @@
               criteria = Array(length);
 
           while (length--) {
-            criteria[length] = value[iteratee[length]];
+            criteria[length] = value == null ? undefined : value[iteratee[length]];
           }
         } else {
           criteria = iteratee(value, key, collection);
diff --git a/test/test.js b/test/test.js
index 51af1b1a2..1b5339bd0 100644
--- a/test/test.js
+++ b/test/test.js
@@ -9755,6 +9755,11 @@
       deepEqual(actual, [objects[2], objects[0], objects[3], objects[1]]);
     });
 
+    test('should not error on nullish elements when sorting by multiple properties', 1, function() {
+      var actual = _.sortBy(objects.concat(undefined), ['a', 'b']);
+      deepEqual(actual, [objects[2], objects[0], objects[3], objects[1], undefined]);
+    });
+
     test('should perform a stable sort when sorting by multiple properties (test in IE > 8, Opera, and V8)', 1, function() {
       var actual = _.sortBy(stableOrder, ['a', 'c']);
       deepEqual(actual, stableOrder);