export interface IsoWeek {
    year: number;
    week: number;
}
export declare function weekStartUtc(iw: IsoWeek): Date;
export declare function weekEndUtc(iw: IsoWeek): Date;
export declare function isoWeekOf(date: Date): IsoWeek;
export declare function compareIsoWeek(a: IsoWeek, b: IsoWeek): number;
export declare function weeksBetween(from: IsoWeek, to: IsoWeek): IsoWeek[];
export declare function formatIsoWeek(iw: IsoWeek): string;
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