From 5c6f161f2006df87f231317f3413bc38ad799b7d Mon Sep 17 00:00:00 2001
From: Stephen Sugden <glurgle@gmail.com>
Date: Wed, 2 May 2012 11:43:12 -0700
Subject: [PATCH] Fix crash when node is a string and this.update is called
 with an object.

---
 index.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.js b/index.js
index b629542..86e27b6 100644
--- a/index.js
+++ b/index.js
@@ -191,6 +191,8 @@ function walk (root, cb, immutable) {
         && state.node !== null && !state.circular) {
             parents.push(state);
             
+            if (!state.keys) state.keys = Object_keys(state.node);
+            
             forEach(state.keys, function (key, i) {
                 path.push(key);