export declare function firstDateInMonth(month: number, year: number, startDayOfWeek: number): Date;
export declare function getWeekdays(locale: Intl.LocalesArgument, startDayOfWeek: number): string[];
export declare function getOffsetMonthDate(baseDate: Date, monthDelta: number): Date;
export declare function getDateMonthAndYearString(date: Date, locale: string): string;