HANA XSDS query returning wrong date and time format

Hello,

I'm working with XSJS, and have created a table via hdbschema file like this:

@Catalog.tableType : #COLUMN 
 	Entity TimeLog {
 	    key ID: Integer;
 	    START_DATE: LocalDate default '0000-00-00';
 	    START_TIME: LocalTime default '00:00:00';
 	};

If I query the table via SQL command directly on catalog explorer, I get dates and time with the format specified by the data type:

YYYY-MM-DD for START_DATE

and

HH:MM:SS for START_TIME

however, in my XSJS code, when I query via XSDS interface:

var TimeLog = XSDS.$importEntity("timerecording.data", "databaseobjects.TimeLog", {
		ID: {
			$key: "\"TIMERECORDING\".\"timerecording.data::timeLogId\""
		}
	});

var tlObject = TimeLog.$query()
    .$where(TimeLog.ID.$eq(id))
    .$execute({$factorized: true, $flat: true});

I'm getting:

{
        "ID": 128,
        "START_DATE": "2018-01-01T00:00:00.000Z",
        "START_TIME": "-000001-12-31T13:05:00.000Z",
    }

As you can see, even though my fields are defined as date only and time only, both of them are displayed as datetime. That's wrong and also a problem, because even if I try to parse time to right format using js code, when I perform new Date(START_TIME), it returns undefined because -0000001-12-31 is not a valid date!

Any help would be appreciated.

Regards.