From e43a591b6bb92117274020774a33be2cafd1d365 Mon Sep 17 00:00:00 2001
From: sasaplus1 <sasaplus1@gmail.com>
Date: Mon, 13 Jun 2016 21:38:22 +0900
Subject: [PATCH] fixed #10, fixed #11, fixed #12

---
 src/index.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/index.js b/src/index.js
index f820a1c0..c21e4184 100644
--- a/src/index.js
+++ b/src/index.js
@@ -61,6 +61,10 @@ function recursiveCopy(target, customizer, clone, visited, reference) {
     value = target[key];
     index = indexOf(visited, value);
 
+    resultCopy = undefined;
+    result = undefined;
+    ref = undefined;
+
     if (index === -1) {
       resultCopy = copy(value, customizer);
       result = (resultCopy !== null) ? resultCopy : value;
@@ -68,8 +72,6 @@ function recursiveCopy(target, customizer, clone, visited, reference) {
       if (value !== null && /^(?:function|object)$/.test(typeof value)) {
         visited.push(value);
         reference.push(result);
-      } else {
-        ref = result;
       }
     } else {
       // circular reference