import { CalendarSystem, CalendarType, CalendarOptions, CalendarCellData } from '../types';
/**
 * Specifies an Islamic (Hijri) date
 */
export interface HijriDate {
    year: number;
    month: number;
    date: number;
}
export declare class IslamicCalendar implements CalendarSystem {
    readonly name: CalendarType;
    private getDaysInIslamicMonth;
    private isLeapYear;
    getWeekDayNames(locale: string, firstDayOfWeek: number, weekDaysFormat: string): string[];
    getMonthName(monthIndex: number, format?: 'long' | 'short', locale?: string): string;
    addDays(date: Date, numberOfDays: number): Date;
    addMonths(date: Date, numberOfMonths: number): Date;
    addYears(date: Date, numberOfYears: number): Date;
    getYear(date: Date): number;
    getMonth(date: Date): number;
    getDay(date: Date): number;
    isSameMonth(firstDate: Date, secondDate: Date): boolean;
    isSameYear(firstDate: Date, secondDate: Date): boolean;
    isSameDate(firstDate: Date, secondDate: Date): boolean;
    getWeekNumber(date: Date): number;
    toDate(year: number, month: number, day: number, hour?: number, minute?: number, second?: number): Date;
    getDaysInMonth(year: number, month: number): number;
    startOfMonth(date: Date): Date;
    endOfMonth(date: Date): Date;
    startOfYear(date: Date): Date;
    endOfYear(date: Date): Date;
    startOfDecade(date: Date): Date;
    getMonthMatrix(baseDate: Date, options?: CalendarOptions): CalendarCellData[][];
    getYearMatrix(baseDate: Date, options?: CalendarOptions): CalendarCellData[][];
    getDecadeMatrix(baseDate: Date, options?: CalendarOptions): CalendarCellData[][];
}