import { Session } from "@rubensworks/solid-client-authn-isomorphic";
export declare class WebHookSubscription2021 {
    private session;
    constructor(session?: Session);
    /**
     * Looks up the storageDescription URL of a solid pod by looking for the `http://www.w3.org/ns/solid#storageDescription` Link value.
     *
     * @param url - the URL of the solid pod. (any resource in the pod is fine; all resources MUST advertise this Link header when the solid pod is a Resource Server. See 2.1 Discovery of the spec )
     */
    private lookupStorageDescription;
    /**
     * Fetches the subscription URL of a Resource Server by first fetching the solid:StorageDescription URL and then extracting the WebSocketChannel2023 from the body.
     * @param url - the Url of the solid pod.
     * @returns
     */
    private fetchSubscriptionUrl;
    /**
     * Retrieves the Websocket URL by following the {@link https://solidproject.org/TR/notifications-protocol|notification protocol v0.2.0.}
     *
     * Discovers from the topic resource the storage description resource.
     * Using the contents of the storage description resource, a search is executed to find the WebHookSubscription2021 channel URL.
     * Finally, a POST request is send to the WebSocketChannel with as content the topic and features.
     * @param topic - The resource in the solid pod that you want to subscribe to.
     * @param features - Which features should be in the message of the notification channel.
     * @returns The websocket URL of the Solid pod for this resource.
     */
    subscribe(topic: string, webId: string, features: Record<string, unknown>): Promise<string>;
}