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define(['./isObject', './_isPrototype', './_nativeKeysIn'], function(isObject, isPrototype, nativeKeysIn) {
  /** Used for built-in method references. */  var objectProto = Object.prototype;
  /** Used to check objects for own properties. */  var hasOwnProperty = objectProto.hasOwnProperty;
  /**   * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.   *   * @private   * @param {Object} object The object to query.   * @returns {Array} Returns the array of property names.   */  function baseKeysIn(object) {    if (!isObject(object)) {      return nativeKeysIn(object);    }    var isProto = isPrototype(object),        result = [];
    for (var key in object) {      if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {        result.push(key);      }    }    return result;  }
  return baseKeysIn;});