define(['../internal/baseForIn', './isArguments', '../internal/isHostObject', '../internal/isObjectLike', '../support'], function(baseForIn, isArguments, isHostObject, isObjectLike, support) {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /** `Object#toString` result references. */
  var objectTag = '[object Object]';

  /** Used for native method references. */
  var objectProto = Object.prototype;

  /** Used to check objects for own properties. */
  var hasOwnProperty = objectProto.hasOwnProperty;

  /**
   * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
   * of values.
   */
  var objToString = objectProto.toString;

  /**
   * Checks if `value` is a plain object, that is, an object created by the
   * `Object` constructor or one with a `[[Prototype]]` of `null`.
   *
   * **Note:** This method assumes objects created by the `Object` constructor
   * have no inherited enumerable properties.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
   * @example
   *
   * function Foo() {
   *   this.a = 1;
   * }
   *
   * _.isPlainObject(new Foo);
   * // => false
   *
   * _.isPlainObject([1, 2, 3]);
   * // => false
   *
   * _.isPlainObject({ 'x': 0, 'y': 0 });
   * // => true
   *
   * _.isPlainObject(Object.create(null));
   * // => true
   */
  function isPlainObject(value) {
    var Ctor;

    // Exit early for non `Object` objects.
    if (!(isObjectLike(value) && objToString.call(value) == objectTag && !isHostObject(value) && !isArguments(value)) ||
        (!hasOwnProperty.call(value, 'constructor') && (Ctor = value.constructor, typeof Ctor == 'function' && !(Ctor instanceof Ctor)))) {
      return false;
    }
    // IE < 9 iterates inherited properties before own properties. If the first
    // iterated property is an object's own property then there are no inherited
    // enumerable properties.
    var result;
    if (support.ownLast) {
      baseForIn(value, function(subValue, key, object) {
        result = hasOwnProperty.call(object, key);
        return false;
      });
      return result !== false;
    }
    // In most environments an object's own properties are iterated before
    // its inherited properties. If the last iterated property is an object's
    // own property then there are no inherited enumerable properties.
    baseForIn(value, function(subValue, key) {
      result = key;
    });
    return result === undefined || hasOwnProperty.call(value, result);
  }

  return isPlainObject;
});