export function normalizeUnits(unit: string): string;
export function relativeTimeThreshold(threshold: string): number | boolean;
export function relativeTimeThreshold(threshold: string, limit: number): boolean;
+ export function relativeTimeRounding(fn: (num: number) => number): boolean;
+ export function relativeTimeRounding(): (num: number) => number;
+ export function calendarFormat(m: Moment, now: Moment) => string;
/**
* Constant used to enable explicit ISO_8601 format parsing.