import { NgbDate } from '../ngb-date';
import { NgbCalendar, NgbPeriod } from '../ngb-calendar';
export declare class NgbCalendarPersian extends NgbCalendar {
    getDaysPerWeek(): number;
    getMonths(): number[];
    getWeeksPerMonth(): number;
    getNext(date: NgbDate, period?: NgbPeriod, number?: number): NgbDate;
    getPrev(date: NgbDate, period?: NgbPeriod, number?: number): NgbDate;
    getWeekday(date: NgbDate): number;
    getWeekNumber(week: readonly NgbDate[], firstDayOfWeek: number): number;
    getToday(): NgbDate;
    isValid(date?: NgbDate | null): boolean;
}