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| exports.capture = capture
exports.captureString = captureString
exports.at = at
exports.parseLine = parseLine
exports.clean = clean
var cwd = process.cwd()
// var methods =[
// 'getThis',
// 'getFunction',
// 'getTypeName',
// 'getFunctionName',
// 'getMethodName',
// 'getFileName',
// 'getLineNumber',
// 'getColumnNumber',
// 'getEvalOrigin',
// 'isToplevel',
// 'isEval',
// 'isNative',
// 'isConstructor'
// ]
function clean (stack) {
if (!Array.isArray(stack))
stack = stack.split('\n')
var internals = [
/\(domain.js:[0-9]+:[0-9]+\)$/,
/\(events.js:[0-9]+:[0-9]+\)$/,
/\(node.js:[0-9]+:[0-9]+\)$/,
/\(timers.js:[0-9]+:[0-9]+\)$/,
/\(module.js:[0-9]+:[0-9]+\)$/,
/GeneratorFunctionPrototype.next \(native\)/,
/node_modules[\\\/]tap[\\\/](.*?)\.js:[0-9]:[0-9]\)?$/
]
if (!(/^\s*at /.test(stack[0])) &&
(/^\s*at /.test(stack[1])))
stack = stack.slice(1)
stack = stack.map(function (st) {
if (internals.some(function (internal) {
return internal.test(st)
})) {
return null
}
return st.trim()
.replace(/^\s*at /, '')
.replace(cwd + '/', '')
.replace(cwd + '\\', '')
}).filter(function (st) {
return st
}).join('\n').trim()
if (stack)
return stack + '\n'
else
return null
}
function captureString (limit, fn) {
if (typeof limit === 'function') {
fn = limit
limit = Infinity
}
if (!fn)
fn = captureString
var limitBefore = Error.stackTraceLimit
if (limit)
Error.stackTraceLimit = limit
var obj = {}
Error.captureStackTrace(obj, fn)
var stack = obj.stack
Error.stackTraceLimit = limitBefore
return clean(stack)
}
function capture (limit, fn) {
Iif (typeof limit === 'function') {
fn = limit
limit = Infinity
}
Iif (!fn)
fn = capture
var prepBefore = Error.prepareStackTrace
var limitBefore = Error.stackTraceLimit
Error.prepareStackTrace = function (obj, site) {
return site
}
Eif (limit)
Error.stackTraceLimit = limit
var obj = {}
Error.captureStackTrace(obj, fn)
var stack = obj.stack
Error.prepareStackTrace = prepBefore
Error.stackTraceLimit = limitBefore
return stack
}
function at (fn) {
Iif (!fn)
fn = at
var site = capture(1, fn)[0]
if (!site)
return {}
var res = {
file: site.getFileName(),
line: site.getLineNumber(),
column: site.getColumnNumber()
}
if (res.file.indexOf(cwd + '/') === 0 ||
res.file.indexOf(cwd + '\\') === 0)
res.file = res.file.substr(cwd.length + 1)
Iif (site.isConstructor())
res.constructor = true
Iif (site.isEval())
res.evalOrigin = site.getEvalOrigin()
Iif (site.isNative())
res.native = true
try {
var typename = site.getTypeName()
} catch (er) {}
Iif (typename && typename !== 'Object' && typename !== '[object Object]')
res.type = typename
var fname = site.getFunctionName()
Iif (fname)
res.function = fname
var meth = site.getMethodName()
Iif (meth && fname !== meth)
res.method = meth
return res
}
var re = new RegExp(
'^' +
// Sometimes we strip out the ' at' because it's noisy
'(?:\\s*at )?' +
// $1 = ctor if 'new'
'(?:(new) )?' +
// Object.method [as foo] (, maybe
// $2 = function name
// $3 = method name
'(?:([^\\(\\[]*)(?: \\[as ([^\\]]+)\\])? \\()?' +
// (eval at <anonymous> (file.js:1:1),
// $4 = eval origin
// $5:$6:$7 are eval file/line/col, but not normally reported
'(?:eval at ([^ ]+) \\(([^\\)]+):([0-9]+):([0-9]+)\\), )?' +
// file:line:col
// $8:$9:$10
// $11 = 'native' if native
'(?:([^\\)]+):([0-9]+):([0-9]+)|(native))' +
// maybe close the paren, then end
'\\)?$'
)
function parseLine (line) {
var match = line.match(re)
if (!match)
return null
var ctor = match[1] === 'new'
var fname = match[2]
var meth = match[3]
var evalOrigin = match[4]
var evalFile = +match[5]
var evalLine = +match[6]
var evalCol = +match[7]
var file = match[8]
var lnum = match[9]
var col = match[10]
var native = match[11] === 'native'
var res = {
file: file,
line: +lnum,
column: +col
}
if (res.file &&
(res.file.indexOf(cwd + '/') === 0 ||
res.file.indexOf(cwd + '\\') === 0))
res.file = res.file.substr(cwd.length + 1)
if (ctor)
res.constructor = true
if (evalOrigin) {
res.evalOrigin = evalOrigin
res.evalLine = evalLine
res.evalColumn = evalCol
}
if (native)
res.native = true
if (fname)
res.function = fname
if (meth && fname !== meth)
res.method = meth
return res
}
|