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        times[i] = tock[0] * 1e9 + tock[1];

        var fork = require('child_process').fork;

            var cp = fork(__filename, [name]);

            cp.once('message', function (stat) {

                console.log(name + ': ' + stat.mean.toFixed(4) + ' ± ' + (1.96 * stat.sd).toFixed(4) + ' ns/tick');

            bench('method', function () {

        var stat = timeit(top, function () {

            return (new Error()).callSite.original;

        process.send({ "mean": stat.mean(), "sd": stat.sd() });

  "description": "API for combining call site modifiers",

  "author": "Andreas Madsen <amwebdk@gmail.com>",

    "url": "git://github.com/AndreasMadsen/stack-chain.git"

// use a already existing formater or fallback to the default v8 formater

var defaultFormater = require('./format.js');

  this.version = require('./package.json').version;

stackChain.prototype.callSite = function collectCallSites(options) {

  Error.captureStackTrace(error, collectCallSites);

  Error.captureStackTrace(obj, collectCallSites);

  callSites = callSites.slice(options.slice || 0);

  if (options.extend) callSites = this.extend._modify(error, callSites);

  if (options.filter) callSites = this.filter._modify(error, callSites);

  if (options.extend) callSites = this.extend._modify(obj, callSites);

  if (options.filter) callSites = this.filter._modify(obj, callSites);

// If a another copy (same version or not) of stack-chain exists it will result

// in wrong stack traces (most likely dublicate callSites).

  // In case the version match, we can simply return the first initialized copy

  if (global._stackChain.version === chain.version) {

    console.error('Another copy of stack-chain was found, using the first initialized copy');

    return; // Prevents V8 and Error extentions from being set again

  // The version don't match, this is really bad. Lets just throw

    throw new Error('Conflicting version of stack-chain found');

// Yay, no other stack-chain copy exists, yet :/

  module.exports = global._stackChain = chain;

TraceModifier.prototype._modify = function (error, frames) {

  for (var i = 0, l = this._modifiers.length; i < l; i++) {

    frames = this._modifiers[i](error, frames);

TraceModifier.prototype.attach = function (modifier) {

TraceModifier.prototype.deattach = function (modifier) {

  var index = this._modifiers.indexOf(modifier);

StackFormater.prototype.replace = function (formater) {

StackFormater.prototype.restore  = function () {

StackFormater.prototype._backup = function () {

  if (this._formater === defaultFormater) {

StackFormater.prototype._roolback = function () {

// Set Error.prepareStackTrace thus allowing stack-chain

// to take control of the Error().stack formating.

// If there already is a custom stack formater, then set

    chain.format.replace(Error.prepareStackTrace);

function prepareStackTrace(error, originalFrames) {

  if (SHORTCUT_CALLSITE) return originalFrames;

		@@ -51,3 +51,3 @@
		var stat = timeit(top, function () {
		return chain.callSites();
		return chain.callSite();
		});
		@@ -54,0 +54,0 @@ process.send({ "mean": stat.mean(), "sd": stat.sd() });

		{
		"name": "stack-chain",
		"description": "API for combining call site modifiers",
		"version": "1.3.0",
		"version": "1.3.1",
		"author": "Andreas Madsen <amwebdk@gmail.com>",
		@@ -6,0 +6,0 @@ "main": "./stack-chain.js",

		@@ -19,5 +19,5 @@
		SHORTCUT_CALLSITE = true;
		var error = new Error();
		Error.captureStackTrace(error, collectCallSites);
		var callSites = error.stack;
		var obj = {};
		Error.captureStackTrace(obj, collectCallSites);
		var callSites = obj.stack;
		SHORTCUT_CALLSITE = false;
		@@ -29,4 +29,4 @@
		// Modify CallSites
		if (options.extend) callSites = this.extend._modify(error, callSites);
		if (options.filter) callSites = this.filter._modify(error, callSites);
		if (options.extend) callSites = this.extend._modify(obj, callSites);
		if (options.filter) callSites = this.filter._modify(obj, callSites);

		@@ -33,0 +33,0 @@ // Done

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