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Object.getPropertyNames ||
Object.defineProperty(Object, "getPropertyNames", {
  value: function(obj) {
    var propertyNames = [];
    do {
      propertyNames.push.apply(propertyNames, Object.getOwnPropertyNames(obj));
      obj = Object.getPrototypeOf(obj);
    } while (obj);
    // get unique property names
    obj = {};

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// WebKit strict mode bugs

// Eval code should be "strict eval code" if the call to eval is a direct call (15.1.2.1.1) to
// the eval function that is contained in strict mode code:
(function () {
  "use strict";
  return eval('(function() { return !this; })()');
})();

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if (typeof Array.isArray != 'function') {
  Array.isArray = (function () {
    var toString = Object.prototype.toString;
    return function (obj) {
      return toString.call(obj) == '[object Array]';
    };
  })();
}

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/**
 * This library defines a new style ES objects
 * which support delegation based mixins. A mixin
 * chain is stored in the internal [[Mixin]] property.
 *
 * Used features: Harmony (ES6) proxies.
 *
 * Tested in FF4 beta.
 *
 * @author Dmitry A. Soshnikov <[email protected]>

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var obj = { foo: function () { return "bar"; } };

var jsonString = JSON.stringify(obj, function (key, value) {
  if (typeof value == 'function') {
    return value();
  }
  return value;
});

// Firefox <= 3.6, produces invalid JSON: '{"foo":}'

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/**
 * Written by Asen Bozhilov
 * http://code.google.com/p/js-examples/source/browse/trunk/JSON.js
 */

if (!this.JSON) {
  this.JSON = {
    parse : (function (undefined) {
      var JSON_GRAMMAR = {
        STRING     : '"([^"\\x00-\\x1F\\\\]|\\\\["\\\\\/bfnrt]|\\\\u[0-9A-Fa-f]{4})*"',

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/**
 * BESEN bug on String index named properties
 *  
 * There are some problems accessing the named properties of String 
 * objects that correspond to the individual characters of its
 * [[PrimitiveValue]].
 *
 * Tested on BESEN r117
 */

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// BESEN wrong behavior of the logical && and || operators
// Tested on r111

var obj = {};

// Logical AND operator
print(obj && obj);       // prints true, expected '[object Object]'
print(obj && 'foo');     // prints '[object Object]', expected 'foo' 
print(obj && 4);         // prints '[object Object]', expected 4 
print(obj && NaN);       // prints false, expected NaN

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// Generic function to subclass an array in JavaScript
// (using the ECMAScript Harmony Proxy features) 
// Structuring of code inspired by @kangax's
// array_subclassing (http://github.com/kangax/array_subclassing)

var makeSubArray = (function () {
  var MAX_UINT32 = Math.pow(2, 32) - 1;

  return function (properties) {
    properties || (properties = {});

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// newApply: Invoke a consturctor function correctly, passing an arbitrary
// number of arguments

function newApply(fn, argsArray) { // (c) Christian C. Salvadó - MIT License
  var F = newApply, obj, ret, t, isPrimitive;
  if (this instanceof F) return; // this function is used as a dummy constructor

  F.prototype = fn.prototype; // set up the prototype and constructor properties
  F.prototype.constructor = fn;