Can't set date format with class property

[igortas]

Hi,

When I try to set custom invalid dates on the calendar on ngOnChanges with the custom function isInvalidDate, the code does not work because the date format is set with class property.

this.dateFormat = 'DD/MM/YYYY';
...
...
...
this.daterangepickerOptions.settings.isInvalidDate = function(date) { const formatted = date.format(this.dateFormat); return ['25/11/2018'].indexOf(formatted) > -1; };

When I use this.format I'm getting 018-11-25T00:00:00+01:00
Otherwise if i use date.format('DD/MM/YYYY') then works as expected.

BR,