From d458906f37239be23552cf9df86dfa066270e54c Mon Sep 17 00:00:00 2001
From: carlfeberhard <carlfeberhard@gmail.com>
Date: Thu, 2 Jun 2016 08:51:25 -0400
Subject: [PATCH 1/3] Raven: fix import in galaxy.panels.mako

Raven now uses a UMD and checks for requirejs removing it from globals
if found. This adds a require import to load Raven.
---
 templates/webapps/galaxy/galaxy.panels.mako | 91 +++++++++------------
 1 file changed, 40 insertions(+), 51 deletions(-)

diff --git a/templates/webapps/galaxy/galaxy.panels.mako b/templates/webapps/galaxy/galaxy.panels.mako
index 005ca3e380e..526fc818b7c 100644
--- a/templates/webapps/galaxy/galaxy.panels.mako
+++ b/templates/webapps/galaxy/galaxy.panels.mako
@@ -1,7 +1,7 @@
 <%namespace name="masthead" file="/webapps/galaxy/galaxy.masthead.mako"/>
 <%namespace name="galaxy_client" file="/galaxy_client_app.mako" />
 
-<!DOCTYPE HTML>
+<!DOCTYPE html>
 
 ## inject parameters parsed by controller config dictionary
 <%
@@ -26,10 +26,10 @@
 %>
 
 <%def name="stylesheets()">
-   ## load default style
-   ${h.css("base")}
+    ## load default style
+    ${h.css("base")}
 
-   ## modify default style
+    ## modify default style
     <style type="text/css">
     #center {
         %if not self.galaxy_config['left_panel']:
@@ -62,38 +62,14 @@
         'libs/require',
     )}
 
-    ## send errors to Sntry server if configured
-    %if app.config.sentry_dsn:
-        ${h.js( "libs/tracekit", "libs/raven" )}
-        <script>
-            Raven.config('${app.config.sentry_dsn_public}').install();
-            %if trans.user:
-                Raven.setUser( { email: "${trans.user.email|h}" } );
-            %endif
-        </script>
-    %endif
-
-    ## make sure console exists
     <script type="text/javascript">
-        // console protection
-        window.console = window.console ||
-        {
-            log     : function(){},
-            debug   : function(){},
-            info    : function(){},
-            warn    : function(){},
-            error   : function(){},
-            assert  : function(){}
-        };
-    </script>
-
-    ## default script wrapper
-    <script type="text/javascript">
-        ## configure require
+        // configure require
         // due to our using both script tags and require, we need to access the same jq in both for plugin retention
         define( 'jquery', [], function(){ return jQuery; })
         require.config({
-            baseUrl: "${h.url_for('/static/scripts') }",
+            baseUrl: "${h.url_for('/static/scripts')}",
+            // cache buster based on templated server (re)start time
+            urlArgs: 'v=${app.server_starttime}',
             shim: {
                 "libs/underscore": { exports: "_" },
                 "libs/backbone": {
@@ -102,11 +78,31 @@
                 },
                 "libs/d3": { exports: "d3" },
             },
-            // cache buster based on templated server (re)start time
-            urlArgs: 'v=${app.server_starttime}'
         });
-        var galaxy_config = ${ h.dumps( self.galaxy_config ) };
 
+        // send errors to Sentry server if configured
+        %if app.config.sentry_dsn:
+            require([ 'libs/raven' ], function( Raven ){
+                Raven.config( '${app.config.sentry_dsn_public}' ).install();
+                %if trans.user:
+                    Raven.setUser({ email: "${trans.user.email|h}" });
+                %endif
+            });
+        %endif
+
+        // console protection
+        // TODO: Only needed for IE <9 which I believe we dropped
+        window.console = window.console || {
+            log     : function(){},
+            debug   : function(){},
+            info    : function(){},
+            warn    : function(){},
+            error   : function(){},
+            assert  : function(){}
+        };
+
+        // extra configuration global
+        var galaxy_config = ${ h.dumps( self.galaxy_config ) };
     </script>
 
 </%def>
@@ -124,19 +120,13 @@
                     });
                 });
             } else {
-                console.log("'galaxy_config.app.jscript' missing.");
+                console.error("'galaxy_config.app.jscript' missing.");
             }
         });
     </script>
 
     ## load the Galaxy global js var and run 'app' from above
     ${ galaxy_client.load( app='app' ) }
-
-    ## alternate call where the module calls itself when included (no call to GalaxyApp()) - the above won't be needed
-    ##precondition: module must call jq onready itself
-    ##${ galaxy_client.load( app=( app_config[ 'jscript' ] if 'jscript' in app_config else None )) }
-
-    ##TODO: at that point, we can think about optimizing the various apps
 </%def>
 
 ## default late-load javascripts
@@ -162,18 +152,17 @@
 ## document
 <html>
     <head>
-        <title>
-            %if self.galaxy_config['title']:
-                ${self.galaxy_config['title']}
-            %endif
-            </title>
-        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-
+        <meta charset="UTF-8">
         ## for mobile browsers, don't scale up
         <meta name = "viewport" content = "maximum-scale=1.0">
-
         ## force IE to standards mode, and prefer Google Chrome Frame if the user has already installed it
-        <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
+        <meta http-equiv="x-ua-compatible" content="ie=edge,chrome=1">
+
+        <title>
+        %if self.galaxy_config['title']:
+            ${self.galaxy_config['title']}
+        %endif
+        </title>
 
         ${self.stylesheets()}
         ${self.javascripts()}

From 8ef5279aacc6125908a37a9157feb47c7c556104 Mon Sep 17 00:00:00 2001
From: carlfeberhard <carlfeberhard@gmail.com>
Date: Thu, 2 Jun 2016 09:08:04 -0400
Subject: [PATCH 2/3] Raven: revert previous commit and move raven first

Moves galaxy.panels.mako's import of Raven back to vanilla script
tag and before the requirejs library import, allowing Raven's UMD
to define Raven as a global.

This starts Raven/sentry *before* the library package is loaded so that
library errors can be captured as well.
---
 templates/webapps/galaxy/galaxy.panels.mako | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/templates/webapps/galaxy/galaxy.panels.mako b/templates/webapps/galaxy/galaxy.panels.mako
index 526fc818b7c..eaef84c2140 100644
--- a/templates/webapps/galaxy/galaxy.panels.mako
+++ b/templates/webapps/galaxy/galaxy.panels.mako
@@ -52,6 +52,16 @@
 </%def>
 
 <%def name="javascripts()">
+    ## Send errors to Sentry server if configured
+    %if app.config.sentry_dsn:
+        ${h.js( "libs/raven" )}
+        <script>
+            Raven.config('${app.config.sentry_dsn_public}').install();
+            %if trans.user:
+                Raven.setUser( { email: "${trans.user.email | h}" } );
+            %endif
+        </script>
+    %endif
 
     ## load jscript libraries
     ${h.js(
@@ -80,16 +90,6 @@
             },
         });
 
-        // send errors to Sentry server if configured
-        %if app.config.sentry_dsn:
-            require([ 'libs/raven' ], function( Raven ){
-                Raven.config( '${app.config.sentry_dsn_public}' ).install();
-                %if trans.user:
-                    Raven.setUser({ email: "${trans.user.email|h}" });
-                %endif
-            });
-        %endif
-
         // console protection
         // TODO: Only needed for IE <9 which I believe we dropped
         window.console = window.console || {

From f78d5404a27d13e0a4e14e655673357d1497f7b2 Mon Sep 17 00:00:00 2001
From: carlfeberhard <carlfeberhard@gmail.com>
Date: Thu, 2 Jun 2016 09:26:16 -0400
Subject: [PATCH 3/3] Raven: remove tracekit as raven has its own

---
 client/bower.json                      |    1 -
 client/galaxy/scripts/libs/tracekit.js | 1244 ------------------------
 client/grunt-tasks/install-libs.js     |    1 -
 static/maps/libs/tracekit.js.map       |    1 -
 static/scripts/libs/tracekit.js        |    2 -
 templates/base.mako                    |    2 +-
 templates/base/base_panels.mako        |    2 +-
 templates/js-app.mako                  |    2 +-
 8 files changed, 3 insertions(+), 1252 deletions(-)
 delete mode 100644 client/galaxy/scripts/libs/tracekit.js
 delete mode 100644 static/maps/libs/tracekit.js.map
 delete mode 100644 static/scripts/libs/tracekit.js

diff --git a/client/bower.json b/client/bower.json
index 1660296ade0..675abc19b8b 100644
--- a/client/bower.json
+++ b/client/bower.json
@@ -9,7 +9,6 @@
   "homepage": "usegalaxy.org",
   "dependencies": {
     "jquery": "~1.12",
-    "tracekit": "*",
     "ravenjs": "~3",
     "underscore": "~1",
     "backbone": "~1.3",
diff --git a/client/galaxy/scripts/libs/tracekit.js b/client/galaxy/scripts/libs/tracekit.js
deleted file mode 100644
index 4aba91d2572..00000000000
--- a/client/galaxy/scripts/libs/tracekit.js
+++ /dev/null
@@ -1,1244 +0,0 @@
-/**
- * https://github.com/csnover/TraceKit
- * @license MIT
- * @namespace TraceKit
- */
-(function(window, undefined) {
-if (!window) {
-    return;
-}
-
-var TraceKit = {};
-var _oldTraceKit = window.TraceKit;
-
-// global reference to slice
-var _slice = [].slice;
-var UNKNOWN_FUNCTION = '?';
-
-/**
- * A better form of hasOwnProperty<br/>
- * Example: `_has(MainHostObject, property) === true/false`
- *
- * @param {Object} object to check property
- * @param {string} key to check
- * @return {Boolean} true if the object has the key and it is not inherited
- */
-function _has(object, key) {
-    return Object.prototype.hasOwnProperty.call(object, key);
-}
-
-/**
- * Returns true if the parameter is undefined<br/>
- * Example: `_isUndefined(val) === true/false`
- *
- * @param {*} what Value to check
- * @return {Boolean} true if undefined and false otherwise
- */
-function _isUndefined(what) {
-    return typeof what === 'undefined';
-}
-
-/**
- * Export TraceKit out to another variable<br/>
- * Example: `var TK = TraceKit.noConflict()`
- * @return {Object} The TraceKit object
- * @memberof TraceKit
- */
-TraceKit.noConflict = function noConflict() {
-    window.TraceKit = _oldTraceKit;
-    return TraceKit;
-};
-
-/**
- * Wrap any function in a TraceKit reporter<br/>
- * Example: `func = TraceKit.wrap(func);`
- *
- * @param {Function} func Function to be wrapped
- * @return {Function} The wrapped func
- * @memberof TraceKit
- */
-TraceKit.wrap = function traceKitWrapper(func) {
-    function wrapped() {
-        try {
-            return func.apply(this, arguments);
-        } catch (e) {
-            TraceKit.report(e);
-            throw e;
-        }
-    }
-    return wrapped;
-};
-
-/**
- * Cross-browser processing of unhandled exceptions
- *
- * Syntax:
- * ```js
- *   TraceKit.report.subscribe(function(stackInfo) { ... })
- *   TraceKit.report.unsubscribe(function(stackInfo) { ... })
- *   TraceKit.report(exception)
- *   try { ...code... } catch(ex) { TraceKit.report(ex); }
- * ```
- *
- * Supports:
- *   - Firefox: full stack trace with line numbers, plus column number
- *     on top frame; column number is not guaranteed
- *   - Opera: full stack trace with line and column numbers
- *   - Chrome: full stack trace with line and column numbers
- *   - Safari: line and column number for the top frame only; some frames
- *     may be missing, and column number is not guaranteed
- *   - IE: line and column number for the top frame only; some frames
- *     may be missing, and column number is not guaranteed
- *
- * In theory, TraceKit should work on all of the following versions:
- *   - IE5.5+ (only 8.0 tested)
- *   - Firefox 0.9+ (only 3.5+ tested)
- *   - Opera 7+ (only 10.50 tested; versions 9 and earlier may require
- *     Exceptions Have Stacktrace to be enabled in opera:config)
- *   - Safari 3+ (only 4+ tested)
- *   - Chrome 1+ (only 5+ tested)
- *   - Konqueror 3.5+ (untested)
- *
- * Requires TraceKit.computeStackTrace.
- *
- * Tries to catch all unhandled exceptions and report them to the
- * subscribed handlers. Please note that TraceKit.report will rethrow the
- * exception. This is REQUIRED in order to get a useful stack trace in IE.
- * If the exception does not reach the top of the browser, you will only
- * get a stack trace from the point where TraceKit.report was called.
- *
- * Handlers receive a TraceKit.StackTrace object as described in the
- * TraceKit.computeStackTrace docs.
- *
- * @memberof TraceKit
- * @namespace
- */
-TraceKit.report = (function reportModuleWrapper() {
-    var handlers = [],
-        lastArgs = null,
-        lastException = null,
-        lastExceptionStack = null;
-
-    /**
-     * Add a crash handler.
-     * @param {Function} handler
-     * @memberof TraceKit.report
-     */
-    function subscribe(handler) {
-        installGlobalHandler();
-        handlers.push(handler);
-    }
-
-    /**
-     * Remove a crash handler.
-     * @param {Function} handler
-     * @memberof TraceKit.report
-     */
-    function unsubscribe(handler) {
-        for (var i = handlers.length - 1; i >= 0; --i) {
-            if (handlers[i] === handler) {
-                handlers.splice(i, 1);
-            }
-        }
-    }
-
-    /**
-     * Dispatch stack information to all handlers.
-     * @param {TraceKit.StackTrace} stack
-     * @param {boolean} isWindowError Is this a top-level window error?
-     * @memberof TraceKit.report
-     * @throws An exception if an error occurs while calling an handler.
-     */
-    function notifyHandlers(stack, isWindowError) {
-        var exception = null;
-        if (isWindowError && !TraceKit.collectWindowErrors) {
-          return;
-        }
-        for (var i in handlers) {
-            if (_has(handlers, i)) {
-                try {
-                    handlers[i].apply(null, [stack].concat(_slice.call(arguments, 2)));
-                } catch (inner) {
-                    exception = inner;
-                }
-            }
-        }
-
-        if (exception) {
-            throw exception;
-        }
-    }
-
-    var _oldOnerrorHandler, _onErrorHandlerInstalled;
-
-    /**
-     * Ensures all global unhandled exceptions are recorded.
-     * Supported by Gecko and IE.
-     * @param {string} message Error message.
-     * @param {string} url URL of script that generated the exception.
-     * @param {(number|string)} lineNo The line number at which the error occurred.
-     * @param {(number|string)=} columnNo The column number at which the error occurred.
-     * @param {Error=} errorObj The actual Error object.
-     * @memberof TraceKit.report
-     */
-    function traceKitWindowOnError(message, url, lineNo, columnNo, errorObj) {
-        var stack = null;
-
-        if (lastExceptionStack) {
-            TraceKit.computeStackTrace.augmentStackTraceWithInitialElement(lastExceptionStack, url, lineNo, message);
-    	    processLastException();
-	    } else if (errorObj) {
-            stack = TraceKit.computeStackTrace(errorObj);
-            notifyHandlers(stack, true);
-        } else {
-            var location = {
-              'url': url,
-              'line': lineNo,
-              'column': columnNo
-            };
-            location.func = TraceKit.computeStackTrace.guessFunctionName(location.url, location.line);
-            location.context = TraceKit.computeStackTrace.gatherContext(location.url, location.line);
-            stack = {
-              'mode': 'onerror',
-              'message': message,
-              'stack': [location]
-            };
-
-            notifyHandlers(stack, true);
-        }
-
-        if (_oldOnerrorHandler) {
-            return _oldOnerrorHandler.apply(this, arguments);
-        }
-
-        return false;
-    }
-
-    /**
-     * Install a global onerror handler
-     * @memberof TraceKit.report
-     */
-    function installGlobalHandler () {
-        if (_onErrorHandlerInstalled === true) {
-            return;
-        }
-        _oldOnerrorHandler = window.onerror;
-        window.onerror = traceKitWindowOnError;
-        _onErrorHandlerInstalled = true;
-    }
-
-    /**
-     * Process the most recent exception
-     * @memberof TraceKit.report
-     */
-    function processLastException() {
-        var _lastExceptionStack = lastExceptionStack,
-            _lastArgs = lastArgs;
-        lastArgs = null;
-        lastExceptionStack = null;
-        lastException = null;
-        notifyHandlers.apply(null, [_lastExceptionStack, false].concat(_lastArgs));
-    }
-
-    /**
-     * Reports an unhandled Error to TraceKit.
-     * @param {Error} ex
-     * @memberof TraceKit.report
-     * @throws An exception if an incomplete stack trace is detected (old IE browsers).
-     */
-    function report(ex) {
-        if (lastExceptionStack) {
-            if (lastException === ex) {
-                return; // already caught by an inner catch block, ignore
-            } else {
-              processLastException();
-            }
-        }
-
-        var stack = TraceKit.computeStackTrace(ex);
-        lastExceptionStack = stack;
-        lastException = ex;
-        lastArgs = _slice.call(arguments, 1);
-
-        // If the stack trace is incomplete, wait for 2 seconds for
-        // slow slow IE to see if onerror occurs or not before reporting
-        // this exception; otherwise, we will end up with an incomplete
-        // stack trace
-        window.setTimeout(function () {
-            if (lastException === ex) {
-                processLastException();
-            }
-        }, (stack.incomplete ? 2000 : 0));
-
-        throw ex; // re-throw to propagate to the top level (and cause window.onerror)
-    }
-
-    report.subscribe = subscribe;
-    report.unsubscribe = unsubscribe;
-    return report;
-}());
-
-/**
- * An object representing a single stack frame.
- * @typedef {Object} StackFrame
- * @property {string} url The JavaScript or HTML file URL.
- * @property {string} func The function name, or empty for anonymous functions (if guessing did not work).
- * @property {string[]?} args The arguments passed to the function, if known.
- * @property {number=} line The line number, if known.
- * @property {number=} column The column number, if known.
- * @property {string[]} context An array of source code lines; the middle element corresponds to the correct line#.
- * @memberof TraceKit
- */
-
-/**
- * An object representing a JavaScript stack trace.
- * @typedef {Object} StackTrace
- * @property {string} name The name of the thrown exception.
- * @property {string} message The exception error message.
- * @property {TraceKit.StackFrame[]} stack An array of stack frames.
- * @property {string} mode 'stack', 'stacktrace', 'multiline', 'callers', 'onerror', or 'failed' -- method used to collect the stack trace.
- * @memberof TraceKit
- */
-
-/**
- * TraceKit.computeStackTrace: cross-browser stack traces in JavaScript
- *
- * Syntax:
- *   ```js
- *   s = TraceKit.computeStackTrace.ofCaller([depth])
- *   s = TraceKit.computeStackTrace(exception) // consider using TraceKit.report instead (see below)
- *   ```
- *
- * Supports:
- *   - Firefox:  full stack trace with line numbers and unreliable column
- *               number on top frame
- *   - Opera 10: full stack trace with line and column numbers
- *   - Opera 9-: full stack trace with line numbers
- *   - Chrome:   full stack trace with line and column numbers
- *   - Safari:   line and column number for the topmost stacktrace element
- *               only
- *   - IE:       no line numbers whatsoever
- *
- * Tries to guess names of anonymous functions by looking for assignments
- * in the source code. In IE and Safari, we have to guess source file names
- * by searching for function bodies inside all page scripts. This will not
- * work for scripts that are loaded cross-domain.
- * Here be dragons: some function names may be guessed incorrectly, and
- * duplicate functions may be mismatched.
- *
- * TraceKit.computeStackTrace should only be used for tracing purposes.
- * Logging of unhandled exceptions should be done with TraceKit.report,
- * which builds on top of TraceKit.computeStackTrace and provides better
- * IE support by utilizing the window.onerror event to retrieve information
- * about the top of the stack.
- *
- * Note: In IE and Safari, no stack trace is recorded on the Error object,
- * so computeStackTrace instead walks its *own* chain of callers.
- * This means that:
- *  * in Safari, some methods may be missing from the stack trace;
- *  * in IE, the topmost function in the stack trace will always be the
- *    caller of computeStackTrace.
- *
- * This is okay for tracing (because you are likely to be calling
- * computeStackTrace from the function you want to be the topmost element
- * of the stack trace anyway), but not okay for logging unhandled
- * exceptions (because your catch block will likely be far away from the
- * inner function that actually caused the exception).
- *
- * Tracing example:
- *  ```js
- *     function trace(message) {
- *         var stackInfo = TraceKit.computeStackTrace.ofCaller();
- *         var data = message + "\n";
- *         for(var i in stackInfo.stack) {
- *             var item = stackInfo.stack[i];
- *             data += (item.func || '[anonymous]') + "() in " + item.url + ":" + (item.line || '0') + "\n";
- *         }
- *         if (window.console)
- *             console.info(data);
- *         else
- *             alert(data);
- *     }
- * ```
- * @memberof TraceKit
- * @namespace
- */
-TraceKit.computeStackTrace = (function computeStackTraceWrapper() {
-    var debug = false,
-        sourceCache = {};
-
-    /**
-     * Attempts to retrieve source code via XMLHttpRequest, which is used
-     * to look up anonymous function names.
-     * @param {string} url URL of source code.
-     * @return {string} Source contents.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function loadSource(url) {
-        if (!TraceKit.remoteFetching) { //Only attempt request if remoteFetching is on.
-            return '';
-        }
-        try {
-            var getXHR = function() {
-                try {
-                    return new window.XMLHttpRequest();
-                } catch (e) {
-                    // explicitly bubble up the exception if not found
-                    return new window.ActiveXObject('Microsoft.XMLHTTP');
-                }
-            };
-
-            var request = getXHR();
-            request.open('GET', url, false);
-            request.send('');
-            return request.responseText;
-        } catch (e) {
-            return '';
-        }
-    }
-
-    /**
-     * Retrieves source code from the source code cache.
-     * @param {string} url URL of source code.
-     * @return {Array.<string>} Source contents.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function getSource(url) {
-        if (typeof url !== 'string') {
-            return [];
-        }
-
-        if (!_has(sourceCache, url)) {
-            // URL needs to be able to fetched within the acceptable domain.  Otherwise,
-            // cross-domain errors will be triggered.
-            /*
-                Regex matches:
-                0 - Full Url
-                1 - Protocol
-                2 - Domain
-                3 - Port (Useful for internal applications)
-                4 - Path
-            */
-            var source = '';
-            var domain = '';
-            try { domain = window.document.domain; } catch (e) { }
-            var match = /(.*)\:\/\/([^:\/]+)([:\d]*)\/{0,1}([\s\S]*)/.exec(url);
-            if (match && match[2] === domain) {
-                source = loadSource(url);
-            }
-            sourceCache[url] = source ? source.split('\n') : [];
-        }
-
-        return sourceCache[url];
-    }
-
-    /**
-     * Tries to use an externally loaded copy of source code to determine
-     * the name of a function by looking at the name of the variable it was
-     * assigned to, if any.
-     * @param {string} url URL of source code.
-     * @param {(string|number)} lineNo Line number in source code.
-     * @return {string} The function name, if discoverable.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function guessFunctionName(url, lineNo) {
-        var reFunctionArgNames = /function ([^(]*)\(([^)]*)\)/,
-            reGuessFunction = /['"]?([0-9A-Za-z$_]+)['"]?\s*[:=]\s*(function|eval|new Function)/,
-            line = '',
-            maxLines = 10,
-            source = getSource(url),
-            m;
-
-        if (!source.length) {
-            return UNKNOWN_FUNCTION;
-        }
-
-        // Walk backwards from the first line in the function until we find the line which
-        // matches the pattern above, which is the function definition
-        for (var i = 0; i < maxLines; ++i) {
-            line = source[lineNo - i] + line;
-
-            if (!_isUndefined(line)) {
-                if ((m = reGuessFunction.exec(line))) {
-                    return m[1];
-                } else if ((m = reFunctionArgNames.exec(line))) {
-                    return m[1];
-                }
-            }
-        }
-
-        return UNKNOWN_FUNCTION;
-    }
-
-    /**
-     * Retrieves the surrounding lines from where an exception occurred.
-     * @param {string} url URL of source code.
-     * @param {(string|number)} line Line number in source code to centre
-     * around for context.
-     * @return {?Array.<string>} Lines of source code.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function gatherContext(url, line) {
-        var source = getSource(url);
-
-        if (!source.length) {
-            return null;
-        }
-
-        var context = [],
-            // linesBefore & linesAfter are inclusive with the offending line.
-            // if linesOfContext is even, there will be one extra line
-            //   *before* the offending line.
-            linesBefore = Math.floor(TraceKit.linesOfContext / 2),
-            // Add one extra line if linesOfContext is odd
-            linesAfter = linesBefore + (TraceKit.linesOfContext % 2),
-            start = Math.max(0, line - linesBefore - 1),
-            end = Math.min(source.length, line + linesAfter - 1);
-
-        line -= 1; // convert to 0-based index
-
-        for (var i = start; i < end; ++i) {
-            if (!_isUndefined(source[i])) {
-                context.push(source[i]);
-            }
-        }
-
-        return context.length > 0 ? context : null;
-    }
-
-    /**
-     * Escapes special characters, except for whitespace, in a string to be
-     * used inside a regular expression as a string literal.
-     * @param {string} text The string.
-     * @return {string} The escaped string literal.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function escapeRegExp(text) {
-        return text.replace(/[\-\[\]{}()*+?.,\\\^$|#]/g, '\\$&');
-    }
-
-    /**
-     * Escapes special characters in a string to be used inside a regular
-     * expression as a string literal. Also ensures that HTML entities will
-     * be matched the same as their literal friends.
-     * @param {string} body The string.
-     * @return {string} The escaped string.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function escapeCodeAsRegExpForMatchingInsideHTML(body) {
-        return escapeRegExp(body).replace('<', '(?:<|&lt;)').replace('>', '(?:>|&gt;)').replace('&', '(?:&|&amp;)').replace('"', '(?:"|&quot;)').replace(/\s+/g, '\\s+');
-    }
-
-    /**
-     * Determines where a code fragment occurs in the source code.
-     * @param {RegExp} re The function definition.
-     * @param {Array.<string>} urls A list of URLs to search.
-     * @return {?Object.<string, (string|number)>} An object containing
-     * the url, line, and column number of the defined function.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function findSourceInUrls(re, urls) {
-        var source, m;
-        for (var i = 0, j = urls.length; i < j; ++i) {
-            // console.log('searching', urls[i]);
-            if ((source = getSource(urls[i])).length) {
-                source = source.join('\n');
-                if ((m = re.exec(source))) {
-                    // console.log('Found function in ' + urls[i]);
-
-                    return {
-                        'url': urls[i],
-                        'line': source.substring(0, m.index).split('\n').length,
-                        'column': m.index - source.lastIndexOf('\n', m.index) - 1
-                    };
-                }
-            }
-        }
-
-        // console.log('no match');
-
-        return null;
-    }
-
-    /**
-     * Determines at which column a code fragment occurs on a line of the
-     * source code.
-     * @param {string} fragment The code fragment.
-     * @param {string} url The URL to search.
-     * @param {(string|number)} line The line number to examine.
-     * @return {?number} The column number.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function findSourceInLine(fragment, url, line) {
-        var source = getSource(url),
-            re = new RegExp('\\b' + escapeRegExp(fragment) + '\\b'),
-            m;
-
-        line -= 1;
-
-        if (source && source.length > line && (m = re.exec(source[line]))) {
-            return m.index;
-        }
-
-        return null;
-    }
-
-    /**
-     * Determines where a function was defined within the source code.
-     * @param {(Function|string)} func A function reference or serialized
-     * function definition.
-     * @return {?Object.<string, (string|number)>} An object containing
-     * the url, line, and column number of the defined function.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function findSourceByFunctionBody(func) {
-        if (_isUndefined(window && window.document)) {
-            return;
-        }
-
-        var urls = [window.location.href],
-            scripts = window.document.getElementsByTagName('script'),
-            body,
-            code = '' + func,
-            codeRE = /^function(?:\s+([\w$]+))?\s*\(([\w\s,]*)\)\s*\{\s*(\S[\s\S]*\S)\s*\}\s*$/,
-            eventRE = /^function on([\w$]+)\s*\(event\)\s*\{\s*(\S[\s\S]*\S)\s*\}\s*$/,
-            re,
-            parts,
-            result;
-
-        for (var i = 0; i < scripts.length; ++i) {
-            var script = scripts[i];
-            if (script.src) {
-                urls.push(script.src);
-            }
-        }
-
-        if (!(parts = codeRE.exec(code))) {
-            re = new RegExp(escapeRegExp(code).replace(/\s+/g, '\\s+'));
-        }
-
-        // not sure if this is really necessary, but I don’t have a test
-        // corpus large enough to confirm that and it was in the original.
-        else {
-            var name = parts[1] ? '\\s+' + parts[1] : '',
-                args = parts[2].split(',').join('\\s*,\\s*');
-
-            body = escapeRegExp(parts[3]).replace(/;$/, ';?'); // semicolon is inserted if the function ends with a comment.replace(/\s+/g, '\\s+');
-            re = new RegExp('function' + name + '\\s*\\(\\s*' + args + '\\s*\\)\\s*{\\s*' + body + '\\s*}');
-        }
-
-        // look for a normal function definition
-        if ((result = findSourceInUrls(re, urls))) {
-            return result;
-        }
-
-        // look for an old-school event handler function
-        if ((parts = eventRE.exec(code))) {
-            var event = parts[1];
-            body = escapeCodeAsRegExpForMatchingInsideHTML(parts[2]);
-
-            // look for a function defined in HTML as an onXXX handler
-            re = new RegExp('on' + event + '=[\\\'"]\\s*' + body + '\\s*[\\\'"]', 'i');
-
-            if ((result = findSourceInUrls(re, urls[0]))) {
-                return result;
-            }
-
-            // look for ???
-            re = new RegExp(body);
-
-            if ((result = findSourceInUrls(re, urls))) {
-                return result;
-            }
-        }
-
-        return null;
-    }
-
-    // Contents of Exception in various browsers.
-    //
-    // SAFARI:
-    // ex.message = Can't find variable: qq
-    // ex.line = 59
-    // ex.sourceId = 580238192
-    // ex.sourceURL = http://...
-    // ex.expressionBeginOffset = 96
-    // ex.expressionCaretOffset = 98
-    // ex.expressionEndOffset = 98
-    // ex.name = ReferenceError
-    //
-    // FIREFOX:
-    // ex.message = qq is not defined
-    // ex.fileName = http://...
-    // ex.lineNumber = 59
-    // ex.columnNumber = 69
-    // ex.stack = ...stack trace... (see the example below)
-    // ex.name = ReferenceError
-    //
-    // CHROME:
-    // ex.message = qq is not defined
-    // ex.name = ReferenceError
-    // ex.type = not_defined
-    // ex.arguments = ['aa']
-    // ex.stack = ...stack trace...
-    //
-    // INTERNET EXPLORER:
-    // ex.message = ...
-    // ex.name = ReferenceError
-    //
-    // OPERA:
-    // ex.message = ...message... (see the example below)
-    // ex.name = ReferenceError
-    // ex.opera#sourceloc = 11  (pretty much useless, duplicates the info in ex.message)
-    // ex.stacktrace = n/a; see 'opera:config#UserPrefs|Exceptions Have Stacktrace'
-
-    /**
-     * Computes stack trace information from the stack property.
-     * Chrome and Gecko use this property.
-     * @param {Error} ex
-     * @return {?TraceKit.StackTrace} Stack trace information.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function computeStackTraceFromStackProp(ex) {
-        if (!ex.stack) {
-            return null;
-        }
-
-        var chrome = /^\s*at (.*?) ?\(((?:file|https?|blob|chrome-extension|native|eval).*?)(?::(\d+))?(?::(\d+))?\)?\s*$/i,
-            gecko = /^\s*(.*?)(?:\((.*?)\))?(?:^|@)((?:file|https?|blob|chrome|\[native).*?)(?::(\d+))?(?::(\d+))?\s*$/i,
-            winjs = /^\s*at (?:((?:\[object object\])?.+) )?\(?((?:ms-appx|https?|blob):.*?):(\d+)(?::(\d+))?\)?\s*$/i,
-            lines = ex.stack.split('\n'),
-            stack = [],
-            parts,
-            element,
-            reference = /^(.*) is undefined$/.exec(ex.message);
-
-        for (var i = 0, j = lines.length; i < j; ++i) {
-            if ((parts = chrome.exec(lines[i]))) {
-                var isNative = parts[2] && parts[2].indexOf('native') !== -1;
-                element = {
-                    'url': !isNative ? parts[2] : null,
-                    'func': parts[1] || UNKNOWN_FUNCTION,
-                    'args': isNative ? [parts[2]] : [],
-                    'line': parts[3] ? +parts[3] : null,
-                    'column': parts[4] ? +parts[4] : null
-                };
-            } else if ( parts = winjs.exec(lines[i]) ) {
-                element = {
-                    'url': parts[2],
-                    'func': parts[1] || UNKNOWN_FUNCTION,
-                    'args': [],
-                    'line': +parts[3],
-                    'column': parts[4] ? +parts[4] : null
-                };
-            } else if ((parts = gecko.exec(lines[i]))) {
-                element = {
-                    'url': parts[3],
-                    'func': parts[1] || UNKNOWN_FUNCTION,
-                    'args': parts[2] ? parts[2].split(',') : [],
-                    'line': parts[4] ? +parts[4] : null,
-                    'column': parts[5] ? +parts[5] : null
-                };
-            } else {
-                continue;
-            }
-
-            if (!element.func && element.line) {
-                element.func = guessFunctionName(element.url, element.line);
-            }
-
-            if (element.line) {
-                element.context = gatherContext(element.url, element.line);
-            }
-
-            stack.push(element);
-        }
-
-        if (!stack.length) {
-            return null;
-        }
-
-        if (stack[0] && stack[0].line && !stack[0].column && reference) {
-            stack[0].column = findSourceInLine(reference[1], stack[0].url, stack[0].line);
-        } else if (!stack[0].column && !_isUndefined(ex.columnNumber)) {
-            // FireFox uses this awesome columnNumber property for its top frame
-            // Also note, Firefox's column number is 0-based and everything else expects 1-based,
-            // so adding 1
-            stack[0].column = ex.columnNumber + 1;
-        }
-
-        return {
-            'mode': 'stack',
-            'name': ex.name,
-            'message': ex.message,
-            'stack': stack
-        };
-    }
-
-    /**
-     * Computes stack trace information from the stacktrace property.
-     * Opera 10+ uses this property.
-     * @param {Error} ex
-     * @return {?TraceKit.StackTrace} Stack trace information.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function computeStackTraceFromStacktraceProp(ex) {
-        // Access and store the stacktrace property before doing ANYTHING
-        // else to it because Opera is not very good at providing it
-        // reliably in other circumstances.
-        var stacktrace = ex.stacktrace;
-        if (!stacktrace) {
-            return;
-        }
-
-        var opera10Regex = / line (\d+).*script (?:in )?(\S+)(?:: in function (\S+))?$/i,
-            opera11Regex = / line (\d+), column (\d+)\s*(?:in (?:<anonymous function: ([^>]+)>|([^\)]+))\((.*)\))? in (.*):\s*$/i,
-            lines = stacktrace.split('\n'),
-            stack = [],
-            parts;
-
-        for (var line = 0; line < lines.length; line += 2) {
-            var element = null;
-            if ((parts = opera10Regex.exec(lines[line]))) {
-                element = {
-                    'url': parts[2],
-                    'line': +parts[1],
-                    'column': null,
-                    'func': parts[3],
-                    'args':[]
-                };
-            } else if ((parts = opera11Regex.exec(lines[line]))) {
-                element = {
-                    'url': parts[6],
-                    'line': +parts[1],
-                    'column': +parts[2],
-                    'func': parts[3] || parts[4],
-                    'args': parts[5] ? parts[5].split(',') : []
-                };
-            }
-
-            if (element) {
-                if (!element.func && element.line) {
-                    element.func = guessFunctionName(element.url, element.line);
-                }
-                if (element.line) {
-                    try {
-                        element.context = gatherContext(element.url, element.line);
-                    } catch (exc) {}
-                }
-
-                if (!element.context) {
-                    element.context = [lines[line + 1]];
-                }
-
-                stack.push(element);
-            }
-        }
-
-        if (!stack.length) {
-            return null;
-        }
-
-        return {
-            'mode': 'stacktrace',
-            'name': ex.name,
-            'message': ex.message,
-            'stack': stack
-        };
-    }
-
-    /**
-     * NOT TESTED.
-     * Computes stack trace information from an error message that includes
-     * the stack trace.
-     * Opera 9 and earlier use this method if the option to show stack
-     * traces is turned on in opera:config.
-     * @param {Error} ex
-     * @return {?TraceKit.StackTrace} Stack information.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function computeStackTraceFromOperaMultiLineMessage(ex) {
-        // TODO: Clean this function up
-        // Opera includes a stack trace into the exception message. An example is:
-        //
-        // Statement on line 3: Undefined variable: undefinedFunc
-        // Backtrace:
-        //   Line 3 of linked script file://localhost/Users/andreyvit/Projects/TraceKit/javascript-client/sample.js: In function zzz
-        //         undefinedFunc(a);
-        //   Line 7 of inline#1 script in file://localhost/Users/andreyvit/Projects/TraceKit/javascript-client/sample.html: In function yyy
-        //           zzz(x, y, z);
-        //   Line 3 of inline#1 script in file://localhost/Users/andreyvit/Projects/TraceKit/javascript-client/sample.html: In function xxx
-        //           yyy(a, a, a);
-        //   Line 1 of function script
-        //     try { xxx('hi'); return false; } catch(ex) { TraceKit.report(ex); }
-        //   ...
-
-        var lines = ex.message.split('\n');
-        if (lines.length < 4) {
-            return null;
-        }
-
-        var lineRE1 = /^\s*Line (\d+) of linked script ((?:file|https?|blob)\S+)(?:: in function (\S+))?\s*$/i,
-            lineRE2 = /^\s*Line (\d+) of inline#(\d+) script in ((?:file|https?|blob)\S+)(?:: in function (\S+))?\s*$/i,
-            lineRE3 = /^\s*Line (\d+) of function script\s*$/i,
-            stack = [],
-            scripts = (window && window.document && window.document.getElementsByTagName('script')),
-            inlineScriptBlocks = [],
-            parts;
-
-        for (var s in scripts) {
-            if (_has(scripts, s) && !scripts[s].src) {
-                inlineScriptBlocks.push(scripts[s]);
-            }
-        }
-
-        for (var line = 2; line < lines.length; line += 2) {
-            var item = null;
-            if ((parts = lineRE1.exec(lines[line]))) {
-                item = {
-                    'url': parts[2],
-                    'func': parts[3],
-                    'args': [],
-                    'line': +parts[1],
-                    'column': null
-                };
-            } else if ((parts = lineRE2.exec(lines[line]))) {
-                item = {
-                    'url': parts[3],
-                    'func': parts[4],
-                    'args': [],
-                    'line': +parts[1],
-                    'column': null // TODO: Check to see if inline#1 (+parts[2]) points to the script number or column number.
-                };
-                var relativeLine = (+parts[1]); // relative to the start of the <SCRIPT> block
-                var script = inlineScriptBlocks[parts[2] - 1];
-                if (script) {
-                    var source = getSource(item.url);
-                    if (source) {
-                        source = source.join('\n');
-                        var pos = source.indexOf(script.innerText);
-                        if (pos >= 0) {
-                            item.line = relativeLine + source.substring(0, pos).split('\n').length;
-                        }
-                    }
-                }
-            } else if ((parts = lineRE3.exec(lines[line]))) {
-                var url = window.location.href.replace(/#.*$/, '');
-                var re = new RegExp(escapeCodeAsRegExpForMatchingInsideHTML(lines[line + 1]));
-                var src = findSourceInUrls(re, [url]);
-                item = {
-                    'url': url,
-                    'func': '',
-                    'args': [],
-                    'line': src ? src.line : parts[1],
-                    'column': null
-                };
-            }
-
-            if (item) {
-                if (!item.func) {
-                    item.func = guessFunctionName(item.url, item.line);
-                }
-                var context = gatherContext(item.url, item.line);
-                var midline = (context ? context[Math.floor(context.length / 2)] : null);
-                if (context && midline.replace(/^\s*/, '') === lines[line + 1].replace(/^\s*/, '')) {
-                    item.context = context;
-                } else {
-                    // if (context) alert("Context mismatch. Correct midline:\n" + lines[i+1] + "\n\nMidline:\n" + midline + "\n\nContext:\n" + context.join("\n") + "\n\nURL:\n" + item.url);
-                    item.context = [lines[line + 1]];
-                }
-                stack.push(item);
-            }
-        }
-        if (!stack.length) {
-            return null; // could not parse multiline exception message as Opera stack trace
-        }
-
-        return {
-            'mode': 'multiline',
-            'name': ex.name,
-            'message': lines[0],
-            'stack': stack
-        };
-    }
-
-    /**
-     * Adds information about the first frame to incomplete stack traces.
-     * Safari and IE require this to get complete data on the first frame.
-     * @param {TraceKit.StackTrace} stackInfo Stack trace information from
-     * one of the compute* methods.
-     * @param {string} url The URL of the script that caused an error.
-     * @param {(number|string)} lineNo The line number of the script that
-     * caused an error.
-     * @param {string=} message The error generated by the browser, which
-     * hopefully contains the name of the object that caused the error.
-     * @return {boolean} Whether or not the stack information was
-     * augmented.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function augmentStackTraceWithInitialElement(stackInfo, url, lineNo, message) {
-        var initial = {
-            'url': url,
-            'line': lineNo
-        };
-
-        if (initial.url && initial.line) {
-            stackInfo.incomplete = false;
-
-            if (!initial.func) {
-                initial.func = guessFunctionName(initial.url, initial.line);
-            }
-
-            if (!initial.context) {
-                initial.context = gatherContext(initial.url, initial.line);
-            }
-
-            var reference = / '([^']+)' /.exec(message);
-            if (reference) {
-                initial.column = findSourceInLine(reference[1], initial.url, initial.line);
-            }
-
-            if (stackInfo.stack.length > 0) {
-                if (stackInfo.stack[0].url === initial.url) {
-                    if (stackInfo.stack[0].line === initial.line) {
-                        return false; // already in stack trace
-                    } else if (!stackInfo.stack[0].line && stackInfo.stack[0].func === initial.func) {
-                        stackInfo.stack[0].line = initial.line;
-                        stackInfo.stack[0].context = initial.context;
-                        return false;
-                    }
-                }
-            }
-
-            stackInfo.stack.unshift(initial);
-            stackInfo.partial = true;
-            return true;
-        } else {
-            stackInfo.incomplete = true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Computes stack trace information by walking the arguments.caller
-     * chain at the time the exception occurred. This will cause earlier
-     * frames to be missed but is the only way to get any stack trace in
-     * Safari and IE. The top frame is restored by
-     * {@link augmentStackTraceWithInitialElement}.
-     * @param {Error} ex
-     * @return {TraceKit.StackTrace=} Stack trace information.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function computeStackTraceByWalkingCallerChain(ex, depth) {
-        var functionName = /function\s+([_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*)?\s*\(/i,
-            stack = [],
-            funcs = {},
-            recursion = false,
-            parts,
-            item,
-            source;
-
-        for (var curr = computeStackTraceByWalkingCallerChain.caller; curr && !recursion; curr = curr.caller) {
-            if (curr === computeStackTrace || curr === TraceKit.report) {
-                // console.log('skipping internal function');
-                continue;
-            }
-
-            item = {
-                'url': null,
-                'func': UNKNOWN_FUNCTION,
-                'args': [],
-                'line': null,
-                'column': null
-            };
-
-            if (curr.name) {
-                item.func = curr.name;
-            } else if ((parts = functionName.exec(curr.toString()))) {
-                item.func = parts[1];
-            }
-
-            if (typeof item.func === 'undefined') {
-              try {
-                item.func = parts.input.substring(0, parts.input.indexOf('{'));
-              } catch (e) { }
-            }
-
-            if ((source = findSourceByFunctionBody(curr))) {
-                item.url = source.url;
-                item.line = source.line;
-
-                if (item.func === UNKNOWN_FUNCTION) {
-                    item.func = guessFunctionName(item.url, item.line);
-                }
-
-                var reference = / '([^']+)' /.exec(ex.message || ex.description);
-                if (reference) {
-                    item.column = findSourceInLine(reference[1], source.url, source.line);
-                }
-            }
-
-            if (funcs['' + curr]) {
-                recursion = true;
-            }else{
-                funcs['' + curr] = true;
-            }
-
-            stack.push(item);
-        }
-
-        if (depth) {
-            // console.log('depth is ' + depth);
-            // console.log('stack is ' + stack.length);
-            stack.splice(0, depth);
-        }
-
-        var result = {
-            'mode': 'callers',
-            'name': ex.name,
-            'message': ex.message,
-            'stack': stack
-        };
-        augmentStackTraceWithInitialElement(result, ex.sourceURL || ex.fileName, ex.line || ex.lineNumber, ex.message || ex.description);
-        return result;
-    }
-
-    /**
-     * Computes a stack trace for an exception.
-     * @param {Error} ex
-     * @param {(string|number)=} depth
-     * @memberof TraceKit.computeStackTrace
-     */
-    function computeStackTrace(ex, depth) {
-        var stack = null;
-        depth = (depth == null ? 0 : +depth);
-
-        try {
-            // This must be tried first because Opera 10 *destroys*
-            // its stacktrace property if you try to access the stack
-            // property first!!
-            stack = computeStackTraceFromStacktraceProp(ex);
-            if (stack) {
-                return stack;
-            }
-        } catch (e) {
-            if (debug) {
-                throw e;
-            }
-        }
-
-        try {
-            stack = computeStackTraceFromStackProp(ex);
-            if (stack) {
-                return stack;
-            }
-        } catch (e) {
-            if (debug) {
-                throw e;
-            }
-        }
-
-        try {
-            stack = computeStackTraceFromOperaMultiLineMessage(ex);
-            if (stack) {
-                return stack;
-            }
-        } catch (e) {
-            if (debug) {
-                throw e;
-            }
-        }
-
-        try {
-            stack = computeStackTraceByWalkingCallerChain(ex, depth + 1);
-            if (stack) {
-                return stack;
-            }
-        } catch (e) {
-            if (debug) {
-                throw e;
-            }
-        }
-
-        return {
-            'mode': 'failed'
-        };
-    }
-
-    /**
-     * Logs a stacktrace starting from the previous call and working down.
-     * @param {(number|string)=} depth How many frames deep to trace.
-     * @return {TraceKit.StackTrace} Stack trace information.
-     * @memberof TraceKit.computeStackTrace
-     */
-    function computeStackTraceOfCaller(depth) {
-        depth = (depth == null ? 0 : +depth) + 1; // "+ 1" because "ofCaller" should drop one frame
-        try {
-            throw new Error();
-        } catch (ex) {
-            return computeStackTrace(ex, depth + 1);
-        }
-    }
-
-    computeStackTrace.augmentStackTraceWithInitialElement = augmentStackTraceWithInitialElement;
-    computeStackTrace.guessFunctionName = guessFunctionName;
-    computeStackTrace.gatherContext = gatherContext;
-    computeStackTrace.ofCaller = computeStackTraceOfCaller;
-    computeStackTrace.getSource = getSource;
-
-    return computeStackTrace;
-}());
-
-/**
- * Extends support for global error handling for asynchronous browser
- * functions. Adopted from Closure Library's errorhandler.js
- * @memberof TraceKit
- */
-TraceKit.extendToAsynchronousCallbacks = function () {
-    var _helper = function _helper(fnName) {
-        var originalFn = window[fnName];
-        window[fnName] = function traceKitAsyncExtension() {
-            // Make a copy of the arguments
-            var args = _slice.call(arguments);
-            var originalCallback = args[0];
-            if (typeof (originalCallback) === 'function') {
-                args[0] = TraceKit.wrap(originalCallback);
-            }
-            // IE < 9 doesn't support .call/.apply on setInterval/setTimeout, but it
-            // also only supports 2 argument and doesn't care what "this" is, so we
-            // can just call the original function directly.
-            if (originalFn.apply) {
-                return originalFn.apply(this, args);
-            } else {
-                return originalFn(args[0], args[1]);
-            }
-        };
-    };
-
-    _helper('setTimeout');
-    _helper('setInterval');
-};
-
-//Default options:
-if (!TraceKit.remoteFetching) {
-    TraceKit.remoteFetching = true;
-}
-if (!TraceKit.collectWindowErrors) {
-    TraceKit.collectWindowErrors = true;
-}
-if (!TraceKit.linesOfContext || TraceKit.linesOfContext < 1) {
-    // 5 lines before, the offending line, 5 lines after
-    TraceKit.linesOfContext = 11;
-}
-
-// UMD export
-if (typeof module !== 'undefined' && module.exports && this.module !== module) {
-    module.exports = TraceKit;
-} else if (typeof define === 'function' && define.amd) {
-    define('TraceKit', [], TraceKit);
-} else {
-    window.TraceKit = TraceKit;
-}
-
-}(typeof window !== 'undefined' ? window : global));
diff --git a/client/grunt-tasks/install-libs.js b/client/grunt-tasks/install-libs.js
index bb766089cbe..6647372cf93 100644
--- a/client/grunt-tasks/install-libs.js
+++ b/client/grunt-tasks/install-libs.js
@@ -12,7 +12,6 @@ module.exports = function( grunt ){
         libraryLocations = {
             'jquery':         [ 'dist/jquery.js', 'jquery/jquery.js' ],
             'jquery-migrate': [ 'jquery-migrate.js', 'jquery/jquery.migrate.js' ],
-            'traceKit':       [ 'tracekit.js', 'tracekit.js' ],
             'ravenjs':        [ 'dist/raven.js', 'raven.js' ],
             'underscore':     [ 'underscore.js', 'underscore.js' ],
             'backbone':       [ 'backbone.js', 'backbone.js' ],
diff --git a/static/maps/libs/tracekit.js.map b/static/maps/libs/tracekit.js.map
deleted file mode 100644
index 6d89f80c398..00000000000
--- a/static/maps/libs/tracekit.js.map
+++ /dev/null
@@ -1 +0,0 @@
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\ No newline at end of file
diff --git a/static/scripts/libs/tracekit.js b/static/scripts/libs/tracekit.js
deleted file mode 100644
index 59fb6603b89..00000000000
--- a/static/scripts/libs/tracekit.js
+++ /dev/null
@@ -1,2 +0,0 @@
-!function(a){function b(a,b){return Object.prototype.hasOwnProperty.call(a,b)}function c(a){return"undefined"==typeof a}if(a){var d={},e=a.TraceKit,f=[].slice,g="?";d.noConflict=function(){return a.TraceKit=e,d},d.wrap=function(a){function b(){try{return a.apply(this,arguments)}catch(b){throw d.report(b),b}}return b},d.report=function(){function c(a){i(),n.push(a)}function e(a){for(var b=n.length-1;b>=0;--b)n[b]===a&&n.splice(b,1)}function g(a,c){var e=null;if(!c||d.collectWindowErrors){for(var g in n)if(b(n,g))try{n[g].apply(null,[a].concat(f.call(arguments,2)))}catch(h){e=h}if(e)throw e}}function h(a,b,c,e,f){var h=null;if(q)d.computeStackTrace.augmentStackTraceWithInitialElement(q,b,c,a),j();else if(f)h=d.computeStackTrace(f),g(h,!0);else{var i={url:b,line:c,column:e};i.func=d.computeStackTrace.guessFunctionName(i.url,i.line),i.context=d.computeStackTrace.gatherContext(i.url,i.line),h={mode:"onerror",message:a,stack:[i]},g(h,!0)}return l?l.apply(this,arguments):!1}function i(){m!==!0&&(l=a.onerror,a.onerror=h,m=!0)}function j(){var a=q,b=o;o=null,q=null,p=null,g.apply(null,[a,!1].concat(b))}function k(b){if(q){if(p===b)return;j()}var c=d.computeStackTrace(b);throw q=c,p=b,o=f.call(arguments,1),a.setTimeout(function(){p===b&&j()},c.incomplete?2e3:0),b}var l,m,n=[],o=null,p=null,q=null;return k.subscribe=c,k.unsubscribe=e,k}(),d.computeStackTrace=function(){function e(b){if(!d.remoteFetching)return"";try{var c=function(){try{return new a.XMLHttpRequest}catch(b){return new a.ActiveXObject("Microsoft.XMLHTTP")}},e=c();return e.open("GET",b,!1),e.send(""),e.responseText}catch(f){return""}}function f(c){if("string"!=typeof c)return[];if(!b(w,c)){var d="",f="";try{f=a.document.domain}catch(g){}var h=/(.*)\:\/\/([^:\/]+)([:\d]*)\/{0,1}([\s\S]*)/.exec(c);h&&h[2]===f&&(d=e(c)),w[c]=d?d.split("\n"):[]}return w[c]}function h(a,b){var d,e=/function ([^(]*)\(([^)]*)\)/,h=/['"]?([0-9A-Za-z$_]+)['"]?\s*[:=]\s*(function|eval|new Function)/,i="",j=10,k=f(a);if(!k.length)return g;for(var l=0;j>l;++l)if(i=k[b-l]+i,!c(i)){if(d=h.exec(i))return d[1];if(d=e.exec(i))return d[1]}return g}function i(a,b){var e=f(a);if(!e.length)return null;var g=[],h=Math.floor(d.linesOfContext/2),i=h+d.linesOfContext%2,j=Math.max(0,b-h-1),k=Math.min(e.length,b+i-1);b-=1;for(var l=j;k>l;++l)c(e[l])||g.push(e[l]);return g.length>0?g:null}function j(a){return a.replace(/[\-\[\]{}()*+?.,\\\^$|#]/g,"\\$&")}function k(a){return j(a).replace("<","(?:<|&lt;)").replace(">","(?:>|&gt;)").replace("&","(?:&|&amp;)").replace('"','(?:"|&quot;)').replace(/\s+/g,"\\s+")}function l(a,b){for(var c,d,e=0,g=b.length;g>e;++e)if((c=f(b[e])).length&&(c=c.join("\n"),d=a.exec(c)))return{url:b[e],line:c.substring(0,d.index).split("\n").length,column:d.index-c.lastIndexOf("\n",d.index)-1};return null}function m(a,b,c){var d,e=f(b),g=new RegExp("\\b"+j(a)+"\\b");return c-=1,e&&e.length>c&&(d=g.exec(e[c]))?d.index:null}function n(b){if(!c(a&&a.document)){for(var d,e,f,g,h=[a.location.href],i=a.document.getElementsByTagName("script"),m=""+b,n=/^function(?:\s+([\w$]+))?\s*\(([\w\s,]*)\)\s*\{\s*(\S[\s\S]*\S)\s*\}\s*$/,o=/^function on([\w$]+)\s*\(event\)\s*\{\s*(\S[\s\S]*\S)\s*\}\s*$/,p=0;p<i.length;++p){var q=i[p];q.src&&h.push(q.src)}if(f=n.exec(m)){var r=f[1]?"\\s+"+f[1]:"",s=f[2].split(",").join("\\s*,\\s*");d=j(f[3]).replace(/;$/,";?"),e=new RegExp("function"+r+"\\s*\\(\\s*"+s+"\\s*\\)\\s*{\\s*"+d+"\\s*}")}else e=new RegExp(j(m).replace(/\s+/g,"\\s+"));if(g=l(e,h))return g;if(f=o.exec(m)){var t=f[1];if(d=k(f[2]),e=new RegExp("on"+t+"=[\\'\"]\\s*"+d+"\\s*[\\'\"]","i"),g=l(e,h[0]))return g;if(e=new RegExp(d),g=l(e,h))return g}return null}}function o(a){if(!a.stack)return null;for(var b,d,e=/^\s*at (.*?) ?\(((?:file|https?|blob|chrome-extension|native|eval).*?)(?::(\d+))?(?::(\d+))?\)?\s*$/i,f=/^\s*(.*?)(?:\((.*?)\))?(?:^|@)((?:file|https?|blob|chrome|\[native).*?)(?::(\d+))?(?::(\d+))?\s*$/i,j=/^\s*at (?:((?:\[object object\])?.+) )?\(?((?:ms-appx|https?|blob):.*?):(\d+)(?::(\d+))?\)?\s*$/i,k=a.stack.split("\n"),l=[],n=/^(.*) is undefined$/.exec(a.message),o=0,p=k.length;p>o;++o){if(b=e.exec(k[o])){var q=b[2]&&-1!==b[2].indexOf("native");d={url:q?null:b[2],func:b[1]||g,args:q?[b[2]]:[],line:b[3]?+b[3]:null,column:b[4]?+b[4]:null}}else if(b=j.exec(k[o]))d={url:b[2],func:b[1]||g,args:[],line:+b[3],column:b[4]?+b[4]:null};else{if(!(b=f.exec(k[o])))continue;d={url:b[3],func:b[1]||g,args:b[2]?b[2].split(","):[],line:b[4]?+b[4]:null,column:b[5]?+b[5]:null}}!d.func&&d.line&&(d.func=h(d.url,d.line)),d.line&&(d.context=i(d.url,d.line)),l.push(d)}return l.length?(l[0]&&l[0].line&&!l[0].column&&n?l[0].column=m(n[1],l[0].url,l[0].line):l[0].column||c(a.columnNumber)||(l[0].column=a.columnNumber+1),{mode:"stack",name:a.name,message:a.message,stack:l}):null}function p(a){var b=a.stacktrace;if(b){for(var c,d=/ line (\d+).*script (?:in )?(\S+)(?:: in function (\S+))?$/i,e=/ line (\d+), column (\d+)\s*(?:in (?:<anonymous function: ([^>]+)>|([^\)]+))\((.*)\))? 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-//# sourceMappingURL=../../maps/libs/tracekit.js.map
\ No newline at end of file
diff --git a/templates/base.mako b/templates/base.mako
index d92b32842c9..dc14400a8c4 100644
--- a/templates/base.mako
+++ b/templates/base.mako
@@ -37,7 +37,7 @@
 <%def name="javascripts()">
     ## Send errors to Sntry server if configured
     %if app.config.sentry_dsn:
-        ${h.js( "libs/tracekit", "libs/raven" )}
+        ${h.js( "libs/raven" )}
         <script>
             Raven.config('${app.config.sentry_dsn_public}').install();
             %if trans.user:
diff --git a/templates/base/base_panels.mako b/templates/base/base_panels.mako
index 7972a8fb178..f816659294a 100644
--- a/templates/base/base_panels.mako
+++ b/templates/base/base_panels.mako
@@ -41,7 +41,7 @@
 <%def name="javascripts()">
     ## Send errors to Sentry server if configured
     %if app.config.sentry_dsn:
-        ${h.js( "libs/tracekit", "libs/raven" )}
+        ${h.js( "libs/raven" )}
         <script>
             Raven.config('${app.config.sentry_dsn_public}').install();
             %if trans.user:
diff --git a/templates/js-app.mako b/templates/js-app.mako
index 4842d65fc13..94bd32d2377 100644
--- a/templates/js-app.mako
+++ b/templates/js-app.mako
@@ -57,7 +57,7 @@
 <%def name="page_setup()">
     ## Send js errors to Sentry server if configured
     %if app.config.sentry_dsn:
-    ${h.js( "libs/tracekit", "libs/raven" )}
+    ${h.js( "libs/raven" )}
     <script>
         Raven.config('${app.config.sentry_dsn_public}').install();
         %if trans.user: