docs: function baseKeysIn(object) {
    if (!isObject_1(object)) {
      return _nativeKeysIn(object);
    }
    var isProto = _isPrototype(object),
        result = [];
  
    for (var key in object) {
      if (!(key == 'constructor' && (isProto || !hasOwnProperty$11.call(object, key)))) {
        result.push(key);
      }
    }
    return result;
  }