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Fix #45 and making it possible to only import the parse method #65

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Fix #45 and making it possible to only import the parse method #65

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324 changes: 163 additions & 161 deletions error-stack-parser.js
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Original file line number Diff line number Diff line change
Expand Up @@ -17,186 +17,188 @@
var CHROME_IE_STACK_REGEXP = /^\s*at .*(\S+:\d+|\(native\))/m;
var SAFARI_NATIVE_CODE_REGEXP = /^(eval@)?(\[native code])?$/;

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];
},
var errorStackParser = {}

/**
* Given an Error object, extract the most information from it.
*
* @param {Error} error object
* @return {Array} of StackFrames
*/
errorStackParser.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');
}
}.bind(errorStackParser),

parseV8OrIE: function ErrorStackParser$$parseV8OrIE(error) {
var filtered = error.stack.split('\n').filter(function(line) {
return !!line.match(CHROME_IE_STACK_REGEXP);
}, this);
// Separate line and column numbers from a string of the form: (URI:Line:Column)
errorStackParser.extractLocation = function ErrorStackParser$$extractLocation(urlLike) {
// Fail-fast but return locations like "(native)"
if (urlLike.indexOf(':') === -1) {
return [urlLike];
}

return filtered.map(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 sanitizedLine = line.replace(/^\s+/, '').replace(/\(eval code/g, '(');
var regExp = /(.+?)(?::(\d+))?(?::(\d+))?$/;
var parts = regExp.exec(urlLike.replace(/[()]/g, ''));
return [parts[1], parts[2] || undefined, parts[3] || undefined];
}.bind(errorStackParser);

// capture and preseve the parenthesized location "(/foo/my bar.js:12:87)" in
// case it has spaces in it, as the string is split on \s+ later on
var location = sanitizedLine.match(/ (\((.+):(\d+):(\d+)\)$)/);
errorStackParser.parseV8OrIE = function ErrorStackParser$$parseV8OrIE(error) {
var filtered = error.stack.split('\n').filter(function(line) {
return !!line.match(CHROME_IE_STACK_REGEXP);
}, this);

// remove the parenthesized location from the line, if it was matched
sanitizedLine = location ? sanitizedLine.replace(location[0], '') : sanitizedLine;
return filtered.map(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 sanitizedLine = line.replace(/^\s+/, '').replace(/\(eval code/g, '(');

// capture and preseve the parenthesized location "(/foo/my bar.js:12:87)" in
// case it has spaces in it, as the string is split on \s+ later on
var location = sanitizedLine.match(/ (\((.+):(\d+):(\d+)\)$)/);

// remove the parenthesized location from the line, if it was matched
sanitizedLine = location ? sanitizedLine.replace(location[0], '') : sanitizedLine;

var tokens = sanitizedLine.split(/\s+/).slice(1);
// if a location was matched, pass it to extractLocation() otherwise pop the last token
var locationParts = this.extractLocation(location ? location[1] : tokens.pop());
var functionName = tokens.join(' ') || undefined;
var fileName = ['eval', '<anonymous>'].indexOf(locationParts[0]) > -1 ? undefined : locationParts[0];

return new StackFrame({
functionName: functionName,
fileName: fileName,
lineNumber: locationParts[1],
columnNumber: locationParts[2],
source: line
});
}, this);
}.bind(errorStackParser);

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

return filtered.map(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');
}

var tokens = sanitizedLine.split(/\s+/).slice(1);
// if a location was matched, pass it to extractLocation() otherwise pop the last token
var locationParts = this.extractLocation(location ? location[1] : tokens.pop());
var functionName = tokens.join(' ') || undefined;
var fileName = ['eval', '<anonymous>'].indexOf(locationParts[0]) > -1 ? undefined : locationParts[0];
if (line.indexOf('@') === -1 && line.indexOf(':') === -1) {
// Safari eval frames only have function names and nothing else
return new StackFrame({
functionName: line
});
} else {
var functionNameRegex = /((.*".+"[^@]*)?[^@]*)(?:@)/;
var matches = line.match(functionNameRegex);
var functionName = matches && matches[1] ? matches[1] : undefined;
var locationParts = this.extractLocation(line.replace(functionNameRegex, ''));

return new StackFrame({
functionName: functionName,
fileName: fileName,
fileName: locationParts[0],
lineNumber: locationParts[1],
columnNumber: locationParts[2],
source: line
});
}, this);
},

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

return filtered.map(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({
functionName: line
});
} else {
var functionNameRegex = /((.*".+"[^@]*)?[^@]*)(?:@)/;
var matches = line.match(functionNameRegex);
var functionName = matches && matches[1] ? matches[1] : undefined;
var locationParts = this.extractLocation(line.replace(functionNameRegex, ''));

return new StackFrame({
functionName: functionName,
fileName: locationParts[0],
lineNumber: locationParts[1],
columnNumber: locationParts[2],
source: 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);
}
},
}, this);
}.bind(errorStackParser);

errorStackParser.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);
}
}.bind(errorStackParser);

errorStackParser.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({
fileName: match[2],
lineNumber: match[1],
source: lines[i]
}));
}
}

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

for (var i = 2, len = lines.length; i < len; i += 2) {
var match = lineRE.exec(lines[i]);
if (match) {
result.push(new StackFrame({
errorStackParser.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({
functionName: match[3] || undefined,
fileName: match[2],
lineNumber: match[1],
source: 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({
functionName: match[3] || undefined,
fileName: match[2],
lineNumber: match[1],
source: lines[i]
})
);
}
return result;
}.bind(errorStackParser);

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

return filtered.map(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');
}

return result;
},

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

return filtered.map(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: functionName,
args: args,
fileName: locationParts[0],
lineNumber: locationParts[1],
columnNumber: locationParts[2],
source: line
});
}, this);
}
};
var args = (argsRaw === undefined || argsRaw === '[arguments not available]') ?
undefined : argsRaw.split(',');

return new StackFrame({
functionName: functionName,
args: args,
fileName: locationParts[0],
lineNumber: locationParts[1],
columnNumber: locationParts[2],
source: line
});
}, this);
}.bind(errorStackParser);

return errorStackParser
}));