export declare function getFirstDayOfMonth(date: Date): Date;
export declare function getLastDayOfMonth(date: Date): Date;
export declare function getFirstDayOfWeek(date: Date): Date;
export declare function getLastDayOfWeek(date: Date): Date;
export declare function addDaysToDate(date: Date, daysToAdd: number): Date;
export declare function addMonthsToDate(date: Date, monthsToAdd: number): Date;
export declare function addYearsToDate(date: Date, yearsToAdd: number): Date;
export declare function compareDatesIgnoringTime(date1?: Date, date2?: Date): 1 | 0 | -1 | null;
export declare function compareDatesByYearAndMonth(date1?: Date, date2?: Date): 1 | 0 | -1 | null;
export declare function getWeekNumber(date: Date): number;
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