import express, { Router } from "express";
import { WebhookEvents } from "../types";
export interface WebhookClientArgs {
    /**
     * Use this option if you want to use your own express application
     */
    expressApp?: {
        app: express.Application;
        /**
         * If the app should start listening on the specified port when initializing the webhook router.
         */
        shouldStartListening: boolean;
    };
    /**
     * The server port, defaults to: 8080
     */
    port?: number;
    /**
     * the url for the endpoint, example: { "path": "/whatsapp/business" }.
     *
     * if not provided will default to: "/webhook".
     */
    path?: string;
    /**
     * The token you provided for this endpoint. It is used to authenticate the webhook.
     */
    token: string;
}
/**
 * Use this client if you want to easily initialize webhook connections.
 * Before anything, make sure your server has an https connection.
 * For more info, check the docs: https://developers.facebook.com/docs/whatsapp/cloud-api/guides/set-up-webhooks
 */
export declare class WebhookClient {
    private path;
    private port;
    private token;
    protected router: Router;
    expressApp?: WebhookClientArgs["expressApp"];
    constructor({ path, port, expressApp, token }: WebhookClientArgs);
    /**
     * Initializes the webhook listener server with the provided events.
     */
    initWebhook(events?: WebhookEvents): void;
}