1328 lines
46 KiB
JavaScript
1328 lines
46 KiB
JavaScript
/**
|
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* https://github.com/csnover/TraceKit
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* @license MIT
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* @namespace TraceKit
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*/
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(function(window, undefined) {
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if (!window) {
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return;
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}
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var TraceKit = {};
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var _oldTraceKit = window.TraceKit;
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// global reference to slice
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var _slice = [].slice;
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var UNKNOWN_FUNCTION = '?';
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#Error_types
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var ERROR_TYPES_RE = /^(?:[Uu]ncaught (?:exception: )?)?(?:((?:Eval|Internal|Range|Reference|Syntax|Type|URI|)Error): )?(.*)$/;
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/**
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* A better form of hasOwnProperty<br/>
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* Example: `_has(MainHostObject, property) === true/false`
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*
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||
* @param {Object} object to check property
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* @param {string} key to check
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* @return {Boolean} true if the object has the key and it is not inherited
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*/
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function _has(object, key) {
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return Object.prototype.hasOwnProperty.call(object, key);
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}
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/**
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* Returns true if the parameter is undefined<br/>
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||
* Example: `_isUndefined(val) === true/false`
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||
*
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* @param {*} what Value to check
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* @return {Boolean} true if undefined and false otherwise
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*/
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function _isUndefined(what) {
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return typeof what === 'undefined';
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}
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/**
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* Export TraceKit out to another variable<br/>
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* Example: `var TK = TraceKit.noConflict()`
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* @return {Object} The TraceKit object
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* @memberof TraceKit
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*/
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TraceKit.noConflict = function noConflict() {
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window.TraceKit = _oldTraceKit;
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return TraceKit;
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};
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/**
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* Wrap any function in a TraceKit reporter<br/>
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* Example: `func = TraceKit.wrap(func);`
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*
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* @param {Function} func Function to be wrapped
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* @return {Function} The wrapped func
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* @memberof TraceKit
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*/
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TraceKit.wrap = function traceKitWrapper(func) {
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function wrapped() {
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try {
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return func.apply(this, arguments);
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} catch (e) {
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TraceKit.report(e);
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throw e;
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}
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}
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return wrapped;
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};
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/**
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* Cross-browser processing of unhandled exceptions
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*
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* Syntax:
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* ```js
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* TraceKit.report.subscribe(function(stackInfo) { ... })
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* TraceKit.report.unsubscribe(function(stackInfo) { ... })
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* TraceKit.report(exception)
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* try { ...code... } catch(ex) { TraceKit.report(ex); }
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* ```
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*
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* Supports:
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* - Firefox: full stack trace with line numbers, plus column number
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* on top frame; column number is not guaranteed
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* - Opera: full stack trace with line and column numbers
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* - Chrome: full stack trace with line and column numbers
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* - Safari: line and column number for the top frame only; some frames
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* may be missing, and column number is not guaranteed
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* - IE: line and column number for the top frame only; some frames
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* may be missing, and column number is not guaranteed
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*
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* In theory, TraceKit should work on all of the following versions:
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* - IE5.5+ (only 8.0 tested)
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* - Firefox 0.9+ (only 3.5+ tested)
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* - Opera 7+ (only 10.50 tested; versions 9 and earlier may require
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* Exceptions Have Stacktrace to be enabled in opera:config)
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* - Safari 3+ (only 4+ tested)
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* - Chrome 1+ (only 5+ tested)
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* - Konqueror 3.5+ (untested)
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*
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* Requires TraceKit.computeStackTrace.
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*
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* Tries to catch all unhandled exceptions and report them to the
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* subscribed handlers. Please note that TraceKit.report will rethrow the
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* exception. This is REQUIRED in order to get a useful stack trace in IE.
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* If the exception does not reach the top of the browser, you will only
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* get a stack trace from the point where TraceKit.report was called.
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*
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* Handlers receive a TraceKit.StackTrace object as described in the
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* TraceKit.computeStackTrace docs.
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*
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* @memberof TraceKit
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* @namespace
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*/
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TraceKit.report = (function reportModuleWrapper() {
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var handlers = [],
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lastException = null,
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lastExceptionStack = null;
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/**
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* Add a crash handler.
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* @param {Function} handler
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* @memberof TraceKit.report
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*/
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function subscribe(handler) {
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installGlobalHandler();
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installGlobalUnhandledRejectionHandler();
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handlers.push(handler);
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}
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/**
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* Remove a crash handler.
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* @param {Function} handler
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* @memberof TraceKit.report
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*/
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function unsubscribe(handler) {
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for (var i = handlers.length - 1; i >= 0; --i) {
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||
if (handlers[i] === handler) {
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||
handlers.splice(i, 1);
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||
}
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}
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if (handlers.length === 0) {
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uninstallGlobalHandler();
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uninstallGlobalUnhandledRejectionHandler();
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}
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}
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/**
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* Dispatch stack information to all handlers.
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* @param {TraceKit.StackTrace} stack
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* @param {boolean} isWindowError Is this a top-level window error?
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* @param {Error=} error The error that's being handled (if available, null otherwise)
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* @memberof TraceKit.report
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* @throws An exception if an error occurs while calling an handler.
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*/
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function notifyHandlers(stack, isWindowError, error) {
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var exception = null;
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if (isWindowError && !TraceKit.collectWindowErrors) {
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return;
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}
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for (var i in handlers) {
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if (_has(handlers, i)) {
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try {
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handlers[i](stack, isWindowError, error);
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} catch (inner) {
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exception = inner;
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}
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}
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}
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if (exception) {
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throw exception;
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}
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}
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var _oldOnerrorHandler, _onErrorHandlerInstalled;
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var _oldOnunhandledrejectionHandler, _onUnhandledRejectionHandlerInstalled;
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/**
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* Ensures all global unhandled exceptions are recorded.
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* Supported by Gecko and IE.
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* @param {string} message Error message.
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* @param {string} url URL of script that generated the exception.
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* @param {(number|string)} lineNo The line number at which the error occurred.
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* @param {(number|string)=} columnNo The column number at which the error occurred.
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* @param {Error=} errorObj The actual Error object.
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* @memberof TraceKit.report
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*/
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function traceKitWindowOnError(message, url, lineNo, columnNo, errorObj) {
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var stack = null;
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if (lastExceptionStack) {
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TraceKit.computeStackTrace.augmentStackTraceWithInitialElement(lastExceptionStack, url, lineNo, message);
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processLastException();
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} else if (errorObj) {
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stack = TraceKit.computeStackTrace(errorObj);
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notifyHandlers(stack, true, errorObj);
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} else {
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var location = {
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'url': url,
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'line': lineNo,
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'column': columnNo
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};
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var name;
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var msg = message; // must be new var or will modify original `arguments`
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if ({}.toString.call(message) === '[object String]') {
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var groups = message.match(ERROR_TYPES_RE);
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if (groups) {
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name = groups[1];
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msg = groups[2];
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}
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}
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location.func = TraceKit.computeStackTrace.guessFunctionName(location.url, location.line);
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location.context = TraceKit.computeStackTrace.gatherContext(location.url, location.line);
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stack = {
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'name': name,
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'message': msg,
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'mode': 'onerror',
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'stack': [location]
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};
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notifyHandlers(stack, true, null);
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}
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||
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if (_oldOnerrorHandler) {
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return _oldOnerrorHandler.apply(this, arguments);
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||
}
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return false;
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||
}
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/**
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* Ensures all unhandled rejections are recorded.
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* @param {PromiseRejectionEvent} e event.
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* @memberof TraceKit.report
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* @see https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onunhandledrejection
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* @see https://developer.mozilla.org/en-US/docs/Web/API/PromiseRejectionEvent
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*/
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function traceKitWindowOnUnhandledRejection(e) {
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var stack = TraceKit.computeStackTrace(e.reason);
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notifyHandlers(stack, true, e.reason);
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}
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/**
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||
* Install a global onerror handler
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* @memberof TraceKit.report
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||
*/
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||
function installGlobalHandler() {
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if (_onErrorHandlerInstalled === true) {
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return;
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||
}
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_oldOnerrorHandler = window.onerror;
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window.onerror = traceKitWindowOnError;
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_onErrorHandlerInstalled = true;
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}
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/**
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||
* Uninstall the global onerror handler
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||
* @memberof TraceKit.report
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||
*/
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||
function uninstallGlobalHandler() {
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if (_onErrorHandlerInstalled) {
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window.onerror = _oldOnerrorHandler;
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_onErrorHandlerInstalled = false;
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||
}
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}
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/**
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* Install a global onunhandledrejection handler
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* @memberof TraceKit.report
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*/
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function installGlobalUnhandledRejectionHandler() {
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if (_onUnhandledRejectionHandlerInstalled === true) {
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return;
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||
}
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||
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_oldOnunhandledrejectionHandler = window.onunhandledrejection;
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||
window.onunhandledrejection = traceKitWindowOnUnhandledRejection;
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_onUnhandledRejectionHandlerInstalled = true;
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||
}
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||
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/**
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||
* Uninstall the global onunhandledrejection handler
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||
* @memberof TraceKit.report
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||
*/
|
||
function uninstallGlobalUnhandledRejectionHandler() {
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||
if (_onUnhandledRejectionHandlerInstalled) {
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||
window.onunhandledrejection = _oldOnunhandledrejectionHandler;
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_onUnhandledRejectionHandlerInstalled = false;
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}
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}
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||
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/**
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* Process the most recent exception
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* @memberof TraceKit.report
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*/
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function processLastException() {
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||
var _lastExceptionStack = lastExceptionStack,
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||
_lastException = lastException;
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||
lastExceptionStack = null;
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lastException = null;
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||
notifyHandlers(_lastExceptionStack, false, _lastException);
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||
}
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||
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/**
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||
* Reports an unhandled Error to TraceKit.
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* @param {Error} ex
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* @memberof TraceKit.report
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* @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);
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||
lastExceptionStack = stack;
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||
lastException = ex;
|
||
|
||
// 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
|
||
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 center 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('<', '(?:<|<)').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.
|
||
* @memberof TraceKit.computeStackTrace
|
||
*/
|
||
function findSourceInUrls(re, urls) {
|
||
var source, m;
|
||
for (var i = 0, j = urls.length; i < j; ++i) {
|
||
if ((source = getSource(urls[i])).length) {
|
||
source = source.join('\n');
|
||
if ((m = re.exec(source))) {
|
||
|
||
return {
|
||
'url': urls[i],
|
||
'line': source.substring(0, m.index).split('\n').length,
|
||
'column': m.index - source.lastIndexOf('\n', m.index) - 1
|
||
};
|
||
}
|
||
}
|
||
}
|
||
|
||
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 (.*?) ?\(((?:file|https?|blob|chrome-extension|native|eval|webpack|<anonymous>|\/).*?)(?::(\d+))?(?::(\d+))?\)?\s*$/i,
|
||
gecko = /^\s*(.*?)(?:\((.*?)\))?(?:^|@)((?:file|https?|blob|chrome|webpack|resource|\[native).*?|[^@]*bundle)(?::(\d+))?(?::(\d+))?\s*$/i,
|
||
winjs = /^\s*at (?:((?:\[object object\])?.+) )?\(?((?:file|ms-appx|https?|webpack|blob):.*?):(\d+)(?::(\d+))?\)?\s*$/i,
|
||
|
||
// Used to additionally parse URL/line/column from eval frames
|
||
isEval,
|
||
geckoEval = /(\S+) line (\d+)(?: > eval line \d+)* > eval/i,
|
||
chromeEval = /\((\S*)(?::(\d+))(?::(\d+))\)/,
|
||
|
||
lines = ex.stack.split('\n'),
|
||
stack = [],
|
||
submatch,
|
||
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') === 0; // start of line
|
||
isEval = parts[2] && parts[2].indexOf('eval') === 0; // start of line
|
||
if (isEval && (submatch = chromeEval.exec(parts[2]))) {
|
||
// throw out eval line/column and use top-most line/column number
|
||
parts[2] = submatch[1]; // url
|
||
parts[3] = submatch[2]; // line
|
||
parts[4] = submatch[3]; // column
|
||
}
|
||
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]))) {
|
||
isEval = parts[3] && parts[3].indexOf(' > eval') > -1;
|
||
if (isEval && (submatch = geckoEval.exec(parts[3]))) {
|
||
// throw out eval line/column and use top-most line number
|
||
parts[3] = submatch[1];
|
||
parts[4] = submatch[2];
|
||
parts[5] = null; // no column when eval
|
||
} else if (i === 0 && !parts[5] && !_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
|
||
// NOTE: this hack doesn't work if top-most frame is eval
|
||
stack[0].column = ex.columnNumber + 1;
|
||
}
|
||
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);
|
||
}
|
||
|
||
element.context = element.line ? gatherContext(element.url, element.line) : null;
|
||
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);
|
||
}
|
||
|
||
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) {
|
||
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) {
|
||
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 {
|
||
'name': ex.name,
|
||
'message': ex.message,
|
||
'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.computeStackTraceFromStackProp = computeStackTraceFromStackProp;
|
||
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 define === 'function' && define.amd) {
|
||
define('TraceKit', [], TraceKit);
|
||
} else if (typeof module !== 'undefined' && module.exports && window.module !== module) {
|
||
module.exports = TraceKit;
|
||
} else {
|
||
window.TraceKit = TraceKit;
|
||
}
|
||
|
||
}(typeof window !== 'undefined' ? window : global));
|