import type { Calendar366OpenItemPayload } from './shared';
/**
 * Open an event or task in Calendar 366.
 *
 * @param payload Calendar 366 open command payload.
 * @returns Calendar 366 open URL.
 * @example
 * openItem({ type: 'event', id: 'ABC123' })
 * // => 'cal366://open?type=event&id=ABC123'
 * @example
 * openItem({ type: 'task', id: 'TASK123', date: 1717200000 })
 * // => 'cal366://open?type=task&id=TASK123&date=1717200000'
 * @link https://calendar366.com/help/index.html
 */
export declare function openItem(payload: Calendar366OpenItemPayload): string;