'query' does not exist in type 'QueryFn' | angularfire2

[MoreFlores]

is not assignable to parameter of type ‘QueryFn’.Object literal may only specify known properties, and ‘query’ does not exist in type ‘QueryFn’.

:C

this.af.list('/viajes-list/', {
      query: {
        orderByChild: 'idchofer',
        equalTo: 2
      }
    })
      .subscribe(data => {
        console.log(data);
      });