From ff4b5edcbf29990361725e65adf33662e82959aa Mon Sep 17 00:00:00 2001
From: Anth Winter <anthwinter@gmail.com>
Date: Thu, 24 Dec 2015 12:03:51 +0000
Subject: [PATCH] Added IE version check helper function

---
 lib/helpers/ieVersion.js | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 lib/helpers/ieVersion.js

diff --git a/lib/helpers/ieVersion.js b/lib/helpers/ieVersion.js
new file mode 100644
index 0000000..ac4f11e
--- /dev/null
+++ b/lib/helpers/ieVersion.js
@@ -0,0 +1,23 @@
+'use strict';
+
+/**
+ * https://gist.github.com/padolsey/527683
+ *
+ * A short snippet for detecting versions of IE in JavaScript
+ * without resorting to user-agent sniffing
+ *
+ * @returns {Number|undefined} Number of IE version (5-9), otherwise undefined
+ */
+module.exports = function ieVersion() {
+  var undef;
+  var v = 3;
+  var div = document.createElement('div');
+  var all = div.getElementsByTagName('i');
+
+  while ((
+    div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',
+    all[0]
+  ));
+
+  return v > 4 ? v : undef;
+};
-- 
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