| module.exports = StackUtils; |
| |
| function StackUtils(opts) { |
| if (!(this instanceof StackUtils)) { |
| throw new Error('StackUtils constructor must be called with new'); |
| } |
| opts = opts || {}; |
| this._cwd = (opts.cwd || process.cwd()).replace(/\\/g, '/'); |
| this._internals = opts.internals || []; |
| this._wrapCallSite = opts.wrapCallSite || false; |
| } |
| |
| module.exports.nodeInternals = nodeInternals; |
| |
| function nodeInternals() { |
| if (!module.exports.natives) { |
| module.exports.natives = Object.keys(process.binding('natives')); |
| module.exports.natives.push('bootstrap_node', 'node'); |
| } |
| |
| return module.exports.natives.map(function (n) { |
| return new RegExp('\\(' + n + '\\.js:\\d+:\\d+\\)$'); |
| }).concat([ |
| /\s*at (bootstrap_)?node\.js:\d+:\d+?$/, |
| /\/\.node-spawn-wrap-\w+-\w+\/node:\d+:\d+\)?$/ |
| ]); |
| } |
| |
| StackUtils.prototype.clean = function (stack) { |
| if (!Array.isArray(stack)) { |
| stack = stack.split('\n'); |
| } |
| |
| if (!(/^\s*at /.test(stack[0])) && |
| (/^\s*at /.test(stack[1]))) { |
| stack = stack.slice(1); |
| } |
| |
| var outdent = false; |
| var lastNonAtLine = null; |
| var result = []; |
| |
| stack.forEach(function (st) { |
| st = st.replace(/\\/g, '/'); |
| var isInternal = this._internals.some(function (internal) { |
| return internal.test(st); |
| }); |
| |
| if (isInternal) { |
| return null; |
| } |
| |
| var isAtLine = /^\s*at /.test(st); |
| |
| if (outdent) { |
| st = st.replace(/\s+$/, '').replace(/^(\s+)at /, '$1'); |
| } else { |
| st = st.trim(); |
| if (isAtLine) { |
| st = st.substring(3); |
| } |
| } |
| |
| st = st.replace(this._cwd + '/', ''); |
| |
| if (st) { |
| if (isAtLine) { |
| if (lastNonAtLine) { |
| result.push(lastNonAtLine); |
| lastNonAtLine = null; |
| } |
| result.push(st); |
| } else { |
| outdent = true; |
| lastNonAtLine = st; |
| } |
| } |
| }, this); |
| |
| stack = result.join('\n').trim(); |
| |
| if (stack) { |
| return stack + '\n'; |
| } |
| return ''; |
| }; |
| |
| StackUtils.prototype.captureString = function (limit, fn) { |
| if (typeof limit === 'function') { |
| fn = limit; |
| limit = Infinity; |
| } |
| if (!fn) { |
| fn = this.captureString; |
| } |
| |
| var limitBefore = Error.stackTraceLimit; |
| if (limit) { |
| Error.stackTraceLimit = limit; |
| } |
| |
| var obj = {}; |
| |
| Error.captureStackTrace(obj, fn); |
| var stack = obj.stack; |
| Error.stackTraceLimit = limitBefore; |
| |
| return this.clean(stack); |
| }; |
| |
| StackUtils.prototype.capture = function (limit, fn) { |
| if (typeof limit === 'function') { |
| fn = limit; |
| limit = Infinity; |
| } |
| if (!fn) { |
| fn = this.capture; |
| } |
| var prepBefore = Error.prepareStackTrace; |
| var limitBefore = Error.stackTraceLimit; |
| var wrapCallSite = this._wrapCallSite; |
| |
| Error.prepareStackTrace = function (obj, site) { |
| if (wrapCallSite) { |
| return site.map(wrapCallSite); |
| } |
| return site; |
| }; |
| |
| if (limit) { |
| Error.stackTraceLimit = limit; |
| } |
| |
| var obj = {}; |
| Error.captureStackTrace(obj, fn); |
| var stack = obj.stack; |
| Error.prepareStackTrace = prepBefore; |
| Error.stackTraceLimit = limitBefore; |
| |
| return stack; |
| }; |
| |
| StackUtils.prototype.at = function at(fn) { |
| if (!fn) { |
| fn = at; |
| } |
| |
| var site = this.capture(1, fn)[0]; |
| |
| if (!site) { |
| return {}; |
| } |
| |
| var res = { |
| line: site.getLineNumber(), |
| column: site.getColumnNumber() |
| }; |
| |
| this._setFile(res, site.getFileName()); |
| |
| if (site.isConstructor()) { |
| res.constructor = true; |
| } |
| |
| if (site.isEval()) { |
| res.evalOrigin = site.getEvalOrigin(); |
| } |
| |
| if (site.isNative()) { |
| res.native = true; |
| } |
| |
| var typename = null; |
| try { |
| typename = site.getTypeName(); |
| } catch (er) {} |
| |
| if (typename && |
| typename !== 'Object' && |
| typename !== '[object Object]') { |
| res.type = typename; |
| } |
| |
| var fname = site.getFunctionName(); |
| if (fname) { |
| res.function = fname; |
| } |
| |
| var meth = site.getMethodName(); |
| if (meth && fname !== meth) { |
| res.method = meth; |
| } |
| |
| return res; |
| }; |
| |
| StackUtils.prototype._setFile = function (result, filename) { |
| if (filename) { |
| filename = filename.replace(/\\/g, '/'); |
| if ((filename.indexOf(this._cwd + '/') === 0)) { |
| filename = filename.substr(this._cwd.length + 1); |
| } |
| result.file = filename; |
| } |
| }; |
| |
| var re = new RegExp( |
| '^' + |
| // Sometimes we strip out the ' at' because it's noisy |
| '(?:\\s*at )?' + |
| // $1 = ctor if 'new' |
| '(?:(new) )?' + |
| // $2 = function name (can be literally anything) |
| // May contain method at the end as [as xyz] |
| '(?:(.*?) \\()?' + |
| // (eval at <anonymous> (file.js:1:1), |
| // $3 = eval origin |
| // $4:$5:$6 are eval file/line/col, but not normally reported |
| '(?:eval at ([^ ]+) \\((.+?):(\\d+):(\\d+)\\), )?' + |
| // file:line:col |
| // $7:$8:$9 |
| // $10 = 'native' if native |
| '(?:(.+?):(\\d+):(\\d+)|(native))' + |
| // maybe close the paren, then end |
| // if $11 is ), then we only allow balanced parens in the filename |
| // any imbalance is placed on the fname. This is a heuristic, and |
| // bound to be incorrect in some edge cases. The bet is that |
| // having weird characters in method names is more common than |
| // having weird characters in filenames, which seems reasonable. |
| '(\\)?)$' |
| ); |
| |
| var methodRe = /^(.*?) \[as (.*?)\]$/; |
| |
| StackUtils.prototype.parseLine = function parseLine(line) { |
| var match = line && line.match(re); |
| if (!match) { |
| return null; |
| } |
| |
| var ctor = match[1] === 'new'; |
| var fname = match[2]; |
| var evalOrigin = match[3]; |
| var evalFile = match[4]; |
| var evalLine = Number(match[5]); |
| var evalCol = Number(match[6]); |
| var file = match[7]; |
| var lnum = match[8]; |
| var col = match[9]; |
| var native = match[10] === 'native'; |
| var closeParen = match[11] === ')'; |
| |
| var res = {}; |
| |
| if (lnum) { |
| res.line = Number(lnum); |
| } |
| |
| if (col) { |
| res.column = Number(col); |
| } |
| |
| if (closeParen && file) { |
| // make sure parens are balanced |
| // if we have a file like "asdf) [as foo] (xyz.js", then odds are |
| // that the fname should be += " (asdf) [as foo]" and the file |
| // should be just "xyz.js" |
| // walk backwards from the end to find the last unbalanced ( |
| var closes = 0; |
| for (var i = file.length - 1; i > 0; i--) { |
| if (file.charAt(i) === ')') { |
| closes ++; |
| } else if (file.charAt(i) === '(' && file.charAt(i - 1) === ' ') { |
| closes --; |
| if (closes === -1 && file.charAt(i - 1) === ' ') { |
| var before = file.substr(0, i - 1); |
| var after = file.substr(i + 1); |
| file = after; |
| fname += ' (' + before; |
| break; |
| } |
| } |
| } |
| } |
| |
| if (fname) { |
| var methodMatch = fname.match(methodRe); |
| if (methodMatch) { |
| fname = methodMatch[1]; |
| var meth = methodMatch[2]; |
| } |
| } |
| |
| this._setFile(res, file); |
| |
| if (ctor) { |
| res.constructor = true; |
| } |
| |
| if (evalOrigin) { |
| res.evalOrigin = evalOrigin; |
| res.evalLine = evalLine; |
| res.evalColumn = evalCol; |
| res.evalFile = evalFile && evalFile.replace(/\\/g, '/'); |
| } |
| |
| if (native) { |
| res.native = true; |
| } |
| |
| if (fname) { |
| res.function = fname; |
| } |
| |
| if (meth && fname !== meth) { |
| res.method = meth; |
| } |
| |
| return res; |
| }; |
| |
| var bound = new StackUtils(); |
| |
| Object.keys(StackUtils.prototype).forEach(function (key) { |
| StackUtils[key] = bound[key].bind(bound); |
| }); |