How to use the @vue/reactivity.TrackOpTypes.HAS function in @vue/reactivity

dummy = [obj.foo, 'bar' in obj, Object.keys(obj)]
      },
      { onTrack }
    )
    await nextTick()
    expect(dummy).toEqual([1, true, ['foo', 'bar']])
    expect(onTrack).toHaveBeenCalledTimes(3)
    expect(events).toMatchObject([
      {
        target: obj,
        type: TrackOpTypes.GET,
        key: 'foo'
      },
      {
        target: obj,
        type: TrackOpTypes.HAS,
        key: 'bar'
      },
      {
        target: obj,
        type: TrackOpTypes.ITERATE,
        key: ITERATE_KEY
      }
    ])
  })