selectDate([array]) problem

[seantw]

I want to pick a week:

Complete example

 function getWeek(d) {
    const date = Array.isArray(d)?d[0]:d;
    const week = date.getDay() || 7;
    const d1 = new Date(date);   
    d1.setDate(date.getDate() - (week-1));
    const d2 = new Date(d1);
    d2.setDate(d1.getDate() + 6);
    return [d1,d2];
  }
  
  new AirDatepicker('#el',{
    range: true,
    multipleDatesSeparator: ' ~ ',
    dateFormat: d=>d.toLocaleString('ja',{year:'numeric',month:'long',day:'2-digit'}), //why? Only show one date
    // dateFormat: 'yyyy-MM-dd', // The results were stable and as expected
    onSelect:({date,datepicker})=> {
      datepicker.clear({silent:true});
      datepicker.selectDate(getWeek(date),{silent:true});
    }
  });

If dateFormat is a string, it works fine.
when dateFormat is a function,
I expect selectDate() to show multiple dates,
but it's only a single date.

[t1m0n]

Interesting case, actually I don't remember why I did it like this, but as a workaround you could add multipleDates: true, then you should get an array in dateFormat callback. But note that multipleDatesSeparator won't work in such case, you should join dates in dateFormat manually with preferable separator