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: / var / canvas / node_modules / error-stack-parser /
Filename : error-stack-parser.js
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(function(root, factory) {
    'use strict';
    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, Rhino, and browsers.

    /* istanbul ignore next */
    if (typeof define === 'function' && define.amd) {
        define('error-stack-parser', ['stackframe'], factory);
    } else if (typeof exports === 'object') {
        module.exports = factory(require('stackframe'));
    } else {
        root.ErrorStackParser = factory(root.StackFrame);
    }
}(this, function ErrorStackParser(StackFrame) {
    'use strict';

    var FIREFOX_SAFARI_STACK_REGEXP = /(^|@)\S+\:\d+/;
    var CHROME_IE_STACK_REGEXP = /^\s*at .*(\S+\:\d+|\(native\))/m;
    var SAFARI_NATIVE_CODE_REGEXP = /^(eval@)?(\[native code\])?$/;

    function _map(array, fn, thisArg) {
        if (typeof Array.prototype.map === 'function') {
            return array.map(fn, thisArg);
        } else {
            var output = new Array(array.length);
            for (var i = 0; i < array.length; i++) {
                output[i] = fn.call(thisArg, array[i]);
            }
            return output;
        }
    }

    function _filter(array, fn, thisArg) {
        if (typeof Array.prototype.filter === 'function') {
            return array.filter(fn, thisArg);
        } else {
            var output = [];
            for (var i = 0; i < array.length; i++) {
                if (fn.call(thisArg, array[i])) {
                    output.push(array[i]);
                }
            }
            return output;
        }
    }

    function _indexOf(array, target) {
        if (typeof Array.prototype.indexOf === 'function') {
            return array.indexOf(target);
        } else {
            for (var i = 0; i < array.length; i++) {
                if (array[i] === target) {
                    return i;
                }
            }
            return -1;
        }
    }

    return {
        /**
         * Given an Error object, extract the most information from it.
         *
         * @param {Error} error object
         * @return {Array} of StackFrames
         */
        parse: function ErrorStackParser$$parse(error) {
            if (typeof error.stacktrace !== 'undefined' || typeof error['opera#sourceloc'] !== 'undefined') {
                return this.parseOpera(error);
            } else if (error.stack && error.stack.match(CHROME_IE_STACK_REGEXP)) {
                return this.parseV8OrIE(error);
            } else if (error.stack) {
                return this.parseFFOrSafari(error);
            } else {
                throw new Error('Cannot parse given Error object');
            }
        },

        // Separate line and column numbers from a string of the form: (URI:Line:Column)
        extractLocation: function ErrorStackParser$$extractLocation(urlLike) {
            // Fail-fast but return locations like "(native)"
            if (urlLike.indexOf(':') === -1) {
                return [urlLike];
            }

            var regExp = /(.+?)(?:\:(\d+))?(?:\:(\d+))?$/;
            var parts = regExp.exec(urlLike.replace(/[\(\)]/g, ''));
            return [parts[1], parts[2] || undefined, parts[3] || undefined];
        },

        parseV8OrIE: function ErrorStackParser$$parseV8OrIE(error) {
            var filtered = _filter(error.stack.split('\n'), function(line) {
                return !!line.match(CHROME_IE_STACK_REGEXP);
            }, this);

            return _map(filtered, function(line) {
                if (line.indexOf('(eval ') > -1) {
                    // Throw away eval information until we implement stacktrace.js/stackframe#8
                    line = line.replace(/eval code/g, 'eval').replace(/(\(eval at [^\()]*)|(\)\,.*$)/g, '');
                }
                var tokens = line.replace(/^\s+/, '').replace(/\(eval code/g, '(').split(/\s+/).slice(1);
                var locationParts = this.extractLocation(tokens.pop());
                var functionName = tokens.join(' ') || undefined;
                var fileName = _indexOf(['eval', '<anonymous>'], locationParts[0]) > -1 ? undefined : locationParts[0];

                return new StackFrame(functionName, undefined, fileName, locationParts[1], locationParts[2], line);
            }, this);
        },

        parseFFOrSafari: function ErrorStackParser$$parseFFOrSafari(error) {
            var filtered = _filter(error.stack.split('\n'), function(line) {
                return !line.match(SAFARI_NATIVE_CODE_REGEXP);
            }, this);

            return _map(filtered, function(line) {
                // Throw away eval information until we implement stacktrace.js/stackframe#8
                if (line.indexOf(' > eval') > -1) {
                    line = line.replace(/ line (\d+)(?: > eval line \d+)* > eval\:\d+\:\d+/g, ':$1');
                }

                if (line.indexOf('@') === -1 && line.indexOf(':') === -1) {
                    // Safari eval frames only have function names and nothing else
                    return new StackFrame(line);
                } else {
                    var tokens = line.split('@');
                    var locationParts = this.extractLocation(tokens.pop());
                    var functionName = tokens.join('@') || undefined;
                    return new StackFrame(functionName,
                        undefined,
                        locationParts[0],
                        locationParts[1],
                        locationParts[2],
                        line);
                }
            }, this);
        },

        parseOpera: function ErrorStackParser$$parseOpera(e) {
            if (!e.stacktrace || (e.message.indexOf('\n') > -1 &&
                e.message.split('\n').length > e.stacktrace.split('\n').length)) {
                return this.parseOpera9(e);
            } else if (!e.stack) {
                return this.parseOpera10(e);
            } else {
                return this.parseOpera11(e);
            }
        },

        parseOpera9: function ErrorStackParser$$parseOpera9(e) {
            var lineRE = /Line (\d+).*script (?:in )?(\S+)/i;
            var lines = e.message.split('\n');
            var result = [];

            for (var i = 2, len = lines.length; i < len; i += 2) {
                var match = lineRE.exec(lines[i]);
                if (match) {
                    result.push(new StackFrame(undefined, undefined, match[2], match[1], undefined, lines[i]));
                }
            }

            return result;
        },

        parseOpera10: function ErrorStackParser$$parseOpera10(e) {
            var lineRE = /Line (\d+).*script (?:in )?(\S+)(?:: In function (\S+))?$/i;
            var lines = e.stacktrace.split('\n');
            var result = [];

            for (var i = 0, len = lines.length; i < len; i += 2) {
                var match = lineRE.exec(lines[i]);
                if (match) {
                    result.push(
                        new StackFrame(
                            match[3] || undefined,
                            undefined,
                            match[2],
                            match[1],
                            undefined,
                            lines[i]
                        )
                    );
                }
            }

            return result;
        },

        // Opera 10.65+ Error.stack very similar to FF/Safari
        parseOpera11: function ErrorStackParser$$parseOpera11(error) {
            var filtered = _filter(error.stack.split('\n'), function(line) {
                return !!line.match(FIREFOX_SAFARI_STACK_REGEXP) && !line.match(/^Error created at/);
            }, this);

            return _map(filtered, function(line) {
                var tokens = line.split('@');
                var locationParts = this.extractLocation(tokens.pop());
                var functionCall = (tokens.shift() || '');
                var functionName = functionCall
                        .replace(/<anonymous function(: (\w+))?>/, '$2')
                        .replace(/\([^\)]*\)/g, '') || undefined;
                var argsRaw;
                if (functionCall.match(/\(([^\)]*)\)/)) {
                    argsRaw = functionCall.replace(/^[^\(]+\(([^\)]*)\)$/, '$1');
                }
                var args = (argsRaw === undefined || argsRaw === '[arguments not available]') ?
                    undefined : argsRaw.split(',');
                return new StackFrame(
                    functionName,
                    args,
                    locationParts[0],
                    locationParts[1],
                    locationParts[2],
                    line);
            }, this);
        }
    };
}));