type DateLike = Date | string | number;
export declare const DATE_FORMATS: {
    readonly 'Jan 01': "MMM DD";
    readonly 'Jan 01 (1992)': "MMM DD (YYYY)";
    readonly '2023-01-23': "YYYY-MM-DD";
    readonly 'Jan 01, 2023': "MMM DD, YYYY";
};
/**
 * Transform number strings to numbers, as `dayjs` can't handle number strings
 *
 * @example "1630483200000"
 */
export declare const parseDate: (date: DateLike) => Date;
export declare function formatEventPeriod(event: {
    startsAt: DateLike;
    endsAt: DateLike;
}): string;
export declare function isFutureDate(date: DateLike): boolean;
/**
 * @link https://day.js.org/docs/en/plugin/relative-time
 *
 * @example
 * ```
 * var relativeTime = require('dayjs/plugin/relativeTime')
 * dayjs.extend(relativeTime)
 *
 * dayjs().from(dayjs('1990-01-01')) // in 31 years
 * dayjs().from(dayjs('1990-01-01'), true) // 31 years
 * dayjs().fromNow()
 *
 * dayjs().to(dayjs('1990-01-01')) // "31 years ago"
 * dayjs().toNow()
 * ```
 */
export declare function formatRelativeTime(date: DateLike): string;
export {};