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appenlight-client.js
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appenlight-client.js
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(function (window) {
'use strict';
var logLevels = ['debug', 'info', 'warning', 'error', 'critical'];
var AppEnlight = {
version: '0.5.0',
options: {
apiKey: 'undefined',
protocolVersion: '0.5',
sendInterval: 1000,
server: 'https://api.appenlight.com',
tracekitContextLines: 11,
tracekitRemoteFetching: true,
windowOnError: false
},
errorReportBuffer: [],
slowReportBuffer: [],
logBuffer: [],
requestInfo: {},
extraInfo: {},
tags: {},
init: function (options) {
var self = this;
assign(this.options, options);
if (this.options.sendInterval >= 1000) {
this.createSendInterval(this.options.sendInterval);
}
this.reportsEndpoint = this.options.server +
'/api/reports?public_api_key=' + this.options.apiKey +
'&protocolVersion=' + this.options.protocolVersion;
this.logsEndpoint = this.options.server +
'/api/logs?public_api_key=' + this.options.apiKey +
'&protocolVersion=' + this.options.protocolVersion;
TraceKit.collectWindowErrors = this.options.windowOnError;
TraceKit.remoteFetching = this.options.tracekitRemoteFetching;
TraceKit.linesOfContext = this.options.tracekitContextLines;
TraceKit.report.subscribe(function (errorReport) {
self.handleError(errorReport);
});
},
createSendInterval: function (timeIv) {
var self = this;
this.sendIv = setInterval(function () {
self.sendReports();
self.sendLogs();
}, timeIv);
},
clearRequestInfo: function () {
this.requestInfo = {};
},
setRequestInfo: function (info) {
assign(this.requestInfo, info);
},
clearGlobalExtra: function (keys) {
if (keys) {
for (var i = 0; i < keys.length; i++) {
delete this.extraInfo[keys[i]];
}
}
else {
this.extraInfo = {};
}
},
addGlobalExtra: function (info) {
assign(this.extraInfo, info);
},
clearGlobalTags: function (keys) {
if (keys) {
for (var i = 0; i < keys.length; i++) {
delete this.tags[keys[i]];
}
}
else {
this.tags = {};
}
},
addGlobalTags: function (info) {
assign(this.tags, info);
},
clearGlobalNamespace: function () {
this.options.namespace = undefined;
},
setGlobalNamespace: function (namespace) {
this.options.namespace = namespace;
},
grabError: function (exception, options) {
// we need to catch rethrown exception but throw an error from TraceKit
try {
var report = TraceKit.computeStackTrace(exception);
this.handleError(report, options);
} catch (newException) {
if (exception !== newException) {
throw newException;
}
}
},
handleError: function (errorReport, options) {
options = options || {};
/*jshint camelcase: false */
var errorMsg = '';
if (errorReport.mode === 'stack') {
errorMsg = errorReport.name + ': ' + errorReport.message;
}
else {
errorMsg = errorReport.message;
}
var report = {
'client': 'javascript',
'language': 'javascript',
'error': errorMsg,
'occurences': 1,
'priority': 5,
'server': '',
'http_status': 500,
'request': {},
'traceback': [],
'extra': toPairs(assign({}, this.extraInfo, options.extra)),
'tags': toPairs(assign({}, this.tags, options.tags)),
'url': window.location.href
};
report.user_agent = window.navigator.userAgent;
report.start_time = new Date().toJSON();
assign(report, this.requestInfo);
if (!report.request_id) {
report.request_id = this.genUUID4();
}
// grab last 100 frames in reversed order
var stackSlice = errorReport.stack.reverse().slice(-100);
for (var j = 0; j < stackSlice.length; j++) {
var context = '';
var frame = stackSlice[j];
try {
if (typeof frame.context !== 'undefined') {
context = buildContextString(frame.context);
// Add the error message to the last frame
if (j === stackSlice.length - 1) {
context += '\n' + errorMsg;
}
}
}
catch (e) {
}
var stackline = {
'cline': context,
'file': frame.url,
'fn': frame.func,
'line': frame.line,
'vars': []
};
report.traceback.push(stackline);
}
this.errorReportBuffer.push(report);
},
log: function (level, message, namespace, uuid, tags) {
if (typeof namespace === 'undefined') {
if (typeof this.options.namespace !== 'undefined') {
namespace = this.options.namespace;
}
else {
namespace = window.location.pathname;
}
}
if (typeof uuid === 'undefined') {
uuid = null;
}
var logInfo = {
'log_level': level.toUpperCase(),
'message': message,
'date': new Date().toJSON(),
'namespace': namespace,
'request_id': uuid,
'tags': toPairs(assign({}, this.tags, tags))
};
if (this.requestInfo && typeof this.requestInfo.server !== 'undefined') {
logInfo.server = this.requestInfo.server;
}
this.logBuffer.push(logInfo);
},
genUUID4: function () {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(
/[xy]/g, function (c) {
var r = Math.random() * 16 | 0, v = c === 'x' ? r : r & 0x3 | 0x8;
return v.toString(16);
}
);
},
sendReports: function () {
if (this.errorReportBuffer.length < 1) {
return true;
}
var data = this.errorReportBuffer;
this.submitData(this.reportsEndpoint, data);
this.errorReportBuffer = [];
return true;
},
sendLogs: function () {
if (this.logBuffer.length < 1) {
return true;
}
var data = this.logBuffer;
this.submitData(this.logsEndpoint, data);
this.logBuffer = [];
return true;
},
submitData: function (endpoint, data) {
var xhr = new window.XMLHttpRequest();
if (!xhr && window.ActiveXObject) {
xhr = new window.ActiveXObject('Microsoft.XMLHTTP');
}
xhr.open('POST', endpoint, true);
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(JSON.stringify(data));
}
};
// Shallow copy of own enumerable properties into the target object from
// any number of source objects.
function assign(target) {
target = Object(target);
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i];
if (source) {
for (var k in source) {
if (hasOwnProperty(source, k)) {
target[k] = source[k];
}
}
}
}
return target;
}
// Given an array of context lines, format as a string with one per lines
function buildContextString(contextLines) {
if (contextLines) {
var context = new Array(contextLines.length + 1);
for (var k = 0; k < contextLines.length; k++) {
try{
var line = contextLines[k];
if (line.length > 300) {
context[k] = '<minified-context>';
}
else {
context[k] = line;
}
}
catch(exc){
context[k] = '<error-parsing-context>';
}
}
// Join will include a trailing \n if there are context lines
context[k] = '';
return context.join('\n');
}
return '';
}
// Determine whether a property with the specified key is defined in the
// object, ignoring properties inherited from the object's prototype
function hasOwnProperty(obj, key) {
return Object.prototype.hasOwnProperty.call(obj, key);
}
// Create a function that calls through to the log method with the
// specified log level
function logLevelMethod(logLevel) {
return function() {
var args = [].slice.call(arguments);
args.unshift(logLevel);
return this.log.apply(this, args);
};
}
// Convert object to an array of [key, value] pairs
function toPairs(obj) {
var pairs = [];
for (var k in obj) {
if (hasOwnProperty(obj, k)) {
pairs.push([k, obj[k]]);
}
}
return pairs;
}
// Add methods for each log level
for (var i = 0; i < logLevels.length; i++) {
var logLevel = logLevels[i];
AppEnlight[logLevel] = logLevelMethod(logLevel);
}
window.AppEnlight = AppEnlight;
if (typeof define === 'function' && define.amd) {
define('appenlight', [], function () {
return AppEnlight;
});
}
}(window));
// Version 0.3.1
/*
TraceKit - Cross browser stack traces - github.com/csnover/TraceKit
MIT license
*/
(function(window, undefined) {
if (!window) {
return;
}
var TraceKit = {};
var _oldTraceKit = window.TraceKit;
// global reference to slice
var _slice = [].slice;
var UNKNOWN_FUNCTION = '?';
/**
* _has, a better form of hasOwnProperty
* Example: _has(MainHostObject, property) === true/false
*
* @param {Object} object to check property
* @param {string} key to check
*/
function _has(object, key) {
return Object.prototype.hasOwnProperty.call(object, key);
}
function _isUndefined(what) {
return typeof what === 'undefined';
}
/**
* TraceKit.noConflict: Export TraceKit out to another variable
* Example: var TK = TraceKit.noConflict()
*/
TraceKit.noConflict = function noConflict() {
window.TraceKit = _oldTraceKit;
return TraceKit;
};
/**
* TraceKit.wrap: Wrap any function in a TraceKit reporter
* Example: func = TraceKit.wrap(func);
*
* @param {Function} func Function to be wrapped
* @return {Function} The wrapped func
*/
TraceKit.wrap = function traceKitWrapper(func) {
function wrapped() {
try {
return func.apply(this, arguments);
} catch (e) {
TraceKit.report(e);
throw e;
}
}
return wrapped;
};
/**
* TraceKit.report: cross-browser processing of unhandled exceptions
*
* Syntax:
* 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 stackInfo object as described in the
* TraceKit.computeStackTrace docs.
*/
TraceKit.report = (function reportModuleWrapper() {
var handlers = [],
lastArgs = null,
lastException = null,
lastExceptionStack = null;
/**
* Add a crash handler.
* @param {Function} handler
*/
function subscribe(handler) {
installGlobalHandler();
handlers.push(handler);
}
/**
* Remove a crash handler.
* @param {Function} handler
*/
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 {Object.<string, *>} stack
*/
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.
*/
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;
}
function installGlobalHandler () {
if (_onErrorHandlerInstalled === true) {
return;
}
_oldOnerrorHandler = window.onerror;
window.onerror = traceKitWindowOnError;
_onErrorHandlerInstalled = true;
}
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
*/
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;
}());
/**
* TraceKit.computeStackTrace: cross-browser stack traces in JavaScript
*
* Syntax:
* s = TraceKit.computeStackTrace.ofCaller([depth])
* s = TraceKit.computeStackTrace(exception) // consider using TraceKit.report instead (see below)
* Returns:
* s.name - exception name
* s.message - exception message
* s.stack[i].url - JavaScript or HTML file URL
* s.stack[i].func - function name, or empty for anonymous functions (if guessing did not work)
* s.stack[i].args - arguments passed to the function, if known
* s.stack[i].line - line number, if known
* s.stack[i].column - column number, if known
* s.stack[i].context - an array of source code lines; the middle element corresponds to the correct line#
* s.mode - 'stack', 'stacktrace', 'multiline', 'callers', 'onerror', or 'failed' -- method used to collect the stack trace
*
* 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:
* 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);
* }
*/
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.
*/
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.
*/
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.
var source = '';
var domain = '';
try { domain = document.domain; } catch (e) {}
if (url.indexOf(domain) !== -1) {
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.
*/
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.
*/
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.
*/
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.
*/
function escapeCodeAsRegExpForMatchingInsideHTML(body) {
return escapeRegExp(body).replace('<', '(?:<|<)').replace('>', '(?:>|>)').replace('&', '(?:&|&)').replace('"', '(?:"|")').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.
*/
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.
*/
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.
*/
function findSourceByFunctionBody(func) {
if (_isUndefined(document)) {
return;
}
var urls = [window.location.href],
scripts = 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 {?Object.<string, *>} Stack trace information.
*/
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|\[).*?)(?::(\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],