From d6950885a1325f2a31fcb3e79adebff7af4d3fb5 Mon Sep 17 00:00:00 2001
From: Semigradsky <d.semigradsky@itransition.com>
Date: Tue, 5 Jul 2016 11:36:06 +0300
Subject: [PATCH] Fixed #298: RangeError: Maximum call stack size exceeded with
 custom validator

---
 src/utils.js        | 2 ++
 tests/Utils-spec.js | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/utils.js b/src/utils.js
index 16cbf09..eabcc6f 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -32,6 +32,8 @@ module.exports = {
       return false;
     } else if (Array.isArray(a)) {
       return !this.arraysDiffer(a, b);
+    } else if (typeof a === 'function') {
+      return a.toString() === b.toString();
     } else if (typeof a === 'object' && a !== null && b !== null) {
       return !this.objectsDiffer(a, b);
     }
diff --git a/tests/Utils-spec.js b/tests/Utils-spec.js
index fdec451..3055dce 100644
--- a/tests/Utils-spec.js
+++ b/tests/Utils-spec.js
@@ -25,6 +25,10 @@ export default {
     test.equal(utils.isSame(objA, objH), false);
     test.equal(utils.isSame(objG, objA), false);
 
+    test.equal(utils.isSame(() => {}, () => {}), true);
+    test.equal(utils.isSame(objA, () => {}), false);
+    test.equal(utils.isSame(() => {}, objA), false);
+
     test.done();
 
   }