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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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/**
 * 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 <dmitry.soshnikov@gmail.com>

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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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// 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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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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var sb = {
  Array: function() {
    var result = Array.apply(null, arguments);
    result.__proto__ = sb.Array.prototype;
    return result;
  }
};
sb.Array.prototype  = [];
sb.Array.prototype.last = function () { return this[this.length -1]; };

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function isStrictFunction(fn) {
  if (typeof fn != 'function') throw "Not a function";
  try {
    fn.caller, fn.arguments;
    return false;
  } catch (e) {
    return e instanceof TypeError;
  }
}

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if (typeof Function.prototype.bind != 'function') {
  Function.prototype.bind = (function () {
    var slice = Array.prototype.slice;
    return function (thisArg) {
      var target = this, boundArgs = slice.call(arguments, 1);

      if (typeof target != 'function') throw new TypeError();

      function bound() {
	var args = boundArgs.concat(slice.call(arguments));

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/* V8 Engine internals using built-ins
 * 
 * Bug report:
 *   http://code.google.com/p/v8/issues/detail?id=1625
 * Bug on code:
 *   http://code.google.com/p/v8/source/browse/trunk/src/v8natives.js?r=8733#1026
 *   http://www.google.com/codesearch#W9JxUuHYyMg/trunk/src/v8natives.js&l=1026,1029
 */

var _push = Array.prototype.push;

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var wrap = function (fn, wrapper) {
  var params = [], len = fn.length;
  while (len--) {
    params[len] = 'a'+len;
  }

  return Function('fn,wrapper',
    'return function ('+params+') {' +
    '  return wrapper.call(this, fn, [].slice.call(arguments));'+
    '}')(fn, wrapper);