How to use the searchkit.ObjectState function in searchkit

constructor(key, options){
    super(key, options.id)
    this.options = options

    this.state = new ObjectState({})
  }

constructor(key, options){
    super(key, options.id);
    this.options = options;

    this.state = new ObjectState({});
  }

function CRUKSearchkitLocationAccessor(key, options) {
    _classCallCheck(this, CRUKSearchkitLocationAccessor);

    var _this = _possibleConstructorReturn(this, (CRUKSearchkitLocationAccessor.__proto__ || Object.getPrototypeOf(CRUKSearchkitLocationAccessor)).call(this, key, options.id));

    _this.options = options;

    _this.state = new _searchkit.ObjectState({});
    return _this;
  }

function CRUKSearchkitDateRangeAccessor(key, options) {
    _classCallCheck(this, CRUKSearchkitDateRangeAccessor);

    var _this = _possibleConstructorReturn(this, (CRUKSearchkitDateRangeAccessor.__proto__ || Object.getPrototypeOf(CRUKSearchkitDateRangeAccessor)).call(this, key, options.id));

    _this.options = options;

    _this.state = new _searchkit.ObjectState({});
    return _this;
  }