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  return Object.prototype.toString.call(o);

// DO NOT REMOVE THIS! It is required for compatibility with EnderJS (http://enderjs.com/).

    return Array.isArray(ar) || (typeof ar === 'object' && objectToString(ar) === '[object Array]');

    return typeof d === 'object' && objectToString(d) === '[object Date]';

    return typeof re === 'object' && objectToString(re) === '[object RegExp]';

 * Clones (copies) an Object using deep copying.

 * This function supports circular references by default, but if you are certain

 * there are no circular references in your object, you can save some CPU time

 * Caution: if `circular` is false and `parent` contains circular references,

 * your program may enter an infinite loop and crash.

 * @param `parent` - the object to be cloned

 * @param `circular` - set to true if the object to be cloned may contain

 *    circular references. (optional - true by default)

 * @param `depth` - set to a number if the object is only to be cloned to

 *    a particular depth. (optional - defaults to Infinity)

 * @param `prototype` - sets the prototype to be used when cloning an object.

 *    (optional - defaults to parent prototype).

function clone(parent, circular, depth) {

function clone(parent, circular, depth, prototype) {

  // maintain two arrays for circular references, where corresponding parents

  var useBuffer = typeof Buffer != 'undefined';

  // recurse this function so we don't reset allParents and allChildren

      child = new RegExp(parent.source, util.getRegExpFlags(parent));

      if (parent.lastIndex) child.lastIndex = parent.lastIndex;

      child = new Date(parent.getTime());

    } else if (useBuffer && Buffer.isBuffer(parent)) {

      child = Object.create(Object.getPrototypeOf(parent));

      if (typeof prototype == 'undefined') child = Object.create(Object.getPrototypeOf(parent));

      else child = Object.create(prototype);

      var index = allParents.indexOf(parent);

      child[i] = _clone(parent[i], depth - 1);

 * Simple flat clone using prototype, accepts only objects, usefull for property

 * override on FLAT configuration object (no nested props).

 * USE WITH CAUTION! This may not behave as you wish if you do not know how this

clone.clonePrototype = function(parent) {

  "description": "deep cloning of objects and arrays",

    "url": "git://github.com/pvorb/node-clone.git"

    "url": "https://github.com/pvorb/node-clone/issues"

  "author": "Paul Vorbach <paul@vorba.ch> (http://vorba.ch/)",

    "Blake Miner <miner.blake@gmail.com> (http://www.blakeminer.com/)",

    "Tian You <axqd001@gmail.com> (http://blog.axqd.net/)",

    "George Stagas <gstagas@gmail.com> (http://stagas.com/)",

    "Tobiasz Cudnik <tobiasz.cudnik@gmail.com> (https://github.com/TobiaszCudnik)",

    "Pavel Lang <langpavel@phpskelet.org> (https://github.com/langpavel)",

    "Hugh Kennedy (http://twitter.com/hughskennedy)",

    "Dustin Diaz (http://dustindiaz.com)",

    "Ilya Shaisultanov (https://github.com/diversario)",

    "Nathan MacInnes <nathan@macinn.es> (http://macinn.es/)"

    "Nathan MacInnes <nathan@macinn.es> (http://macinn.es/)",

    "Benjamin E. Coe <ben@npmjs.com> (https://twitter.com/benjamincoe)"

  console.log('Run this test file with nodeunit:');

exports["clone string"] = function(test) {

exports["clone number"] = function(test) {

exports["clone object"] = function(test) {

  test.ok(_(a).isEqual(b), "underscore equal");

exports["clone array"] = function(test) {

exports["clone buffer"] = function(test) {

  var a = new Buffer("this is a test buffer");

  // no underscore equal since it has no concept of Buffers

exports['parent prototype is overriden with prototype provided'] = function (test) {

  var b = clone(a, true, Infinity, null);

  test.strictEqual(b.__defineSetter__, undefined);

exports['clone object with null children'] = function(test) {

		@@ -249,2 +249,11 @@ if(module.parent === null) {

		exports['parent prototype is overriden with prototype provided'] = function (test) {
		test.expect(1);
		function Constructor() {}
		var a = new Constructor();
		var b = clone(a, true, Infinity, null);
		test.strictEqual(b.__defineSetter__, undefined);
		test.done();
		}

		exports['clone object with null children'] = function(test) {
		@@ -251,0 +260,0 @@ test.expect(1);

		@@ -7,2 +7,4 @@ 'use strict';

		// shim for Node's 'util' package
		// DO NOT REMOVE THIS! It is required for compatibility with EnderJS (http://enderjs.com/).
		var util = {
		@@ -46,5 +48,7 @@ isArray: function (ar) {
		* a particular depth. (optional - defaults to Infinity)
		* @param `prototype` - sets the prototype to be used when cloning an object.
		* (optional - defaults to parent prototype).
		*/

		function clone(parent, circular, depth) {
		function clone(parent, circular, depth, prototype) {
		// maintain two arrays for circular references, where corresponding parents
		@@ -88,3 +92,4 @@ // and children have the same index
		} else {
		child = Object.create(Object.getPrototypeOf(parent));
		if (typeof prototype == 'undefined') child = Object.create(Object.getPrototypeOf(parent));
		else child = Object.create(prototype);
		}
		@@ -91,0 +96,0 @@

		@@ -11,3 +11,3 @@ {
		],
		"version": "0.1.15",
		"version": "0.1.16",
		"repository": {
		@@ -33,3 +33,4 @@ "type": "git",
		"Ilya Shaisultanov (https://github.com/diversario)",
		"Nathan MacInnes <nathan@macinn.es> (http://macinn.es/)"
		"Nathan MacInnes <nathan@macinn.es> (http://macinn.es/)",
		"Benjamin E. Coe <ben@npmjs.com> (https://twitter.com/benjamincoe)"
		],
		@@ -36,0 +37,0 @@ "engines": {

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