export function getDayNames(type?: 'abbreviated' | 'narrow' | 'wide'): string[];
export function getFirstDayOfWeek(): number;
export function getMonthNames(type?: 'abbreviated' | 'narrow' | 'wide'): string[];
export function getWeekendEnd(): number;
export function getWeekendStart(): number;
export function isMonthPriorToYear(): boolean;
export function setBundle(bundle: object): void;