how to disable previous date in datepicker using angular 6 code example

Example: how to disable previous date in datepicker using angular 6

minDate: Moment;
maxDate: Moment;
ngOnInit() {
 const currentYear = moment().year();
 this.minDate = moment([currentYear - 1, 0, 1]);
 this.maxDate = moment([currentYear + 1, 11, 31]);
}