From d6f1b164f7c6b40cc7ee2266f13ca5db61c331b9 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Thu, 15 Jan 2015 20:06:05 -0800
Subject: [PATCH] Optimize object path in `baseMergeDeep`.

---
 lodash.src.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lodash.src.js b/lodash.src.js
index 4bd858c79..f544b39f6 100644
--- a/lodash.src.js
+++ b/lodash.src.js
@@ -2534,7 +2534,7 @@
 
       if (isCommon) {
         result = srcValue;
-        if (isArray(srcValue) || isTypedArray(srcValue)) {
+        if (isLength(srcValue) && (isArray(srcValue) || isTypedArray(srcValue))) {
           result = isArray(value) ? value : [];
         } else if (isPlainObject(srcValue)) {
           result = isPlainObject(value) ? value : {};