From a8c7c876366f5edf848f1e6318688f441c7b646b Mon Sep 17 00:00:00 2001
From: Tony Rossi <tony@iamrossi.com>
Date: Tue, 13 Oct 2015 15:05:24 -0400
Subject: [PATCH] Add check for Object.isFrozen() in isPojo()

This adds support for seamless-immutable.js which freezes property fields.  Without this change StateFunctions.js will attempt to delete frozen keys and throws an error.  Simple check for with Object.isFrozen() enables alt.bootstrap({}) to work with seamless-immutable.
---
 src/utils/functions.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/utils/functions.js b/src/utils/functions.js
index e974588d..7a4450c8 100644
--- a/src/utils/functions.js
+++ b/src/utils/functions.js
@@ -8,6 +8,8 @@ export function isPojo(target) {
     &&
     typeof target === 'object'
     &&
+    !Object.isFrozen(target)
+    &&
     Object.prototype.toString.call(target) === '[object Object]'
     &&
     isFunction(Ctor)