AVIL13

function test() {
  //your work with state
  test._state = {}; //reset state
}
Object.defineProperties(test, {
  _state: {
    enumerable: false,
    writable: true,
    value: {}
  },
  t1: {
    get: function() {
      test._state.t1 = true;
      return test;
    }
  },
  t2: {
    get: function() {
      test._state.t2 = true;
      return test;
    }
  }
});