import { IWebhook, IMessageCriteria, SubscriptionStatus } from '../../types';
import { Subscription } from './base';
/**
 * Implementation of message subscription.
 */
export declare class MessageSubscription extends Subscription {
    /**
     * Returns a new `MessageSubscription` that is used to create a new message subscription.
     *
     * @param webhook An [[IWebhook]] object.
     * @param criteria An [[ICriteria]] object.
     * @param status Status of subscription. An [[SubscriptionStatus]] object.
     */
    constructor(webhook: IWebhook, criteria: IMessageCriteria, status?: SubscriptionStatus);
}