import type { BusyCalDatePayload } from './shared';
/**
 * Highlight a date in BusyCal on macOS.
 *
 * @param payload BusyCal date payload.
 * @returns BusyCal macOS date URL.
 * @example
 * openDate({ date: '2021-05-31' })
 * // => 'busycalevent://date/2021-05-31'
 * @example
 * openDate({ date: 'now' })
 * // => 'busycalevent://date/now'
 * @link https://www.busymac.com/docs/busycal/70621-url-handler/
 */
export declare function openDate(payload: BusyCalDatePayload): string;