From b0f49be19e872f306179468eec975555427011ad Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 28 Sep 2010 20:12:37 -0400
Subject: [PATCH] Can't rely on Array.isArray ...

---
 lib/helpers.js     | 2 +-
 src/helpers.coffee | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/helpers.js b/lib/helpers.js
index 4f2f04d6..98a3c134 100644
--- a/lib/helpers.js
+++ b/lib/helpers.js
@@ -61,7 +61,7 @@
     _ref = array;
     for (_i = 0, _len = _ref.length; _i < _len; _i++) {
       element = _ref[_i];
-      if (Array.isArray(element)) {
+      if (element instanceof Array) {
         flattened = flattened.concat(flatten(element));
       } else {
         flattened.push(element);
diff --git a/src/helpers.coffee b/src/helpers.coffee
index d9d250d4..272a8c11 100644
--- a/src/helpers.coffee
+++ b/src/helpers.coffee
@@ -55,8 +55,8 @@ extend = exports.extend = (object, properties) ->
 exports.flatten = flatten = (array) ->
   flattened = []
   for element in array
-    if Array.isArray(element)
-      flattened = flattened.concat flatten(element)
+    if element instanceof Array
+      flattened = flattened.concat flatten element
     else
       flattened.push element
   flattened