From 0e4c49729b8c25004fa9a665a7b4d4f4a2fb611d Mon Sep 17 00:00:00 2001
From: Will Thompson <will@willthompson.co.uk>
Date: Wed, 20 May 2015 12:44:31 +0200
Subject: [PATCH] window.onerror: log stack to server if available

Firefox >= 31 and Chrome >= ~August 2013 pass the Error object as the
5th parameter to window.onerror.

https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onerror
https://code.google.com/p/chromium/issues/detail?id=147127
---
 static/js/pandora.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/static/js/pandora.js b/static/js/pandora.js
index d5f4e712..d123f47e 100644
--- a/static/js/pandora.js
+++ b/static/js/pandora.js
@@ -21,13 +21,15 @@ appPanel
 
 (function() {
 
-    window.onerror = function(error, url, line) {
+    window.onerror = function(error, url, line, column, errorObj) {
         if (error == 'TypeError: Attempted to assign to readonly property.') {
             return;
         }
         try {
+            var stack = (errorObj && errorObj.stack) || "(no stack trace available)";
+
             !isMSIE && !/^resource:/.test(url) && pandora.api.logError({
-                text: error,
+                text: error + "\n\n" + stack,
                 url: document.location.pathname + ' at ' + url,
                 line: line
             });