import type { MomentoSchemePayload } from './shared';
/**
 * Open Momento payload definition.
 */
type Open = MomentoSchemePayload;
/**
 * Launch Momento.
 *
 * @param payload Open Momento payload.
 * @returns Momento launch URL.
 * @example
 * open()
 * // => 'momento://'
 * @example
 * open({ scheme: 'momento-3' })
 * // => 'momento-3://'
 * @link https://momento.zendesk.com/hc/en-us/articles/205668512-Momento-URL-Scheme
 */
export declare function open(payload?: Open): string;
export {};