From e8d402afea462be18ee1a938886e489b4fb65877 Mon Sep 17 00:00:00 2001
From: Thibaut <thibaut@me.com>
Date: Sat, 5 Apr 2014 18:22:12 -0400
Subject: [PATCH] Log "unsupported browser" events

---
 assets/javascripts/app/app.coffee | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/assets/javascripts/app/app.coffee b/assets/javascripts/app/app.coffee
index ecea4926..c58e9548 100644
--- a/assets/javascripts/app/app.coffee
+++ b/assets/javascripts/app/app.coffee
@@ -147,13 +147,20 @@
 
   isSupportedBrowser: ->
     try
-      return true if Function::bind and
-                     history.pushState and
-                     window.matchMedia and
-                     document.body.classList and
-                     document.body.insertAdjacentHTML and
-                     document.createEvent('CustomEvent').defaultPrevented is false and
-                     getComputedStyle(document.querySelector('._header')).backgroundImage isnt 'none'
+      features =
+        bind:               !!Function::bind
+        pushState:          !!history.pushState
+        matchMedia:         !!window.matchMedia
+        classList:          !!document.body.classList
+        insertAdjacentHTML: !!document.body.insertAdjacentHTML
+        defaultPrevented:     document.createEvent('CustomEvent').defaultPrevented is false
+        cssGradients:         getComputedStyle(document.querySelector('._header')).backgroundImage isnt 'none'
+
+      for key, value of features when not value
+        Raven.captureMessage 'unsupported', extra: { feature: key }
+        return false
+
+      true
     catch error
       Raven.captureMessage 'unsupported exception', extra: { error: error, name: error.name, message: error.message }
       false