import HubCommitWriteRequest from './requests/HubCommitWriteRequest';
import HubWriteResponse from './responses/HubWriteResponse';
import HubObjectQueryRequest from './requests/HubObjectQueryRequest';
import HubObjectQueryResponse from './responses/HubObjectQueryResponse';
import HubCommitQueryRequest from './requests/HubCommitQueryRequest';
import HubCommitQueryResponse from './responses/HubCommitQueryResponse';
import Identifier from '../Identifier';
/**
 * Options for instantiating a new Hub session.
 */
export declare class HubSessionOptions {
    /**
     * The DID of the client, i.e the identity of the user/app using this SDK.
     */
    client?: Identifier;
    /**
     * The reference to the private key to use for signing when communicating with the Hub. Must be
     * registered in the DID document of the clientDid.
     */
    signingKeyReference: string | undefined;
    /**
     * The reference to the private key to use for decrypting the hub communication. Must be
     * registered in the DID document of the clientDid.
     */
    encryptionKeyReference: string | undefined;
    /**
     * The Identfier of the owner of the Hub with which we will be communicating.
     */
    hubOwner?: Identifier;
    /**
     * The Identifier of the Hub, for addressing request envelopes.
     */
    hubId: string;
    /**
     * The HTTPS endpoint of the Hub.
     */
    hubEndpoint: string;
}
/**
 * Represents a communication session with a particular Hub instance.
 */
export default class HubSession {
    private client?;
    private hubId;
    private hubEndpoint;
    private hubOwner?;
    private signingKeyReference;
    private encryptionKeyReference;
    constructor(options: HubSessionOptions);
    /**
     * Sends the given request to the Hub instance, and returns the associated response.
     *
     * @param request An instance or subclass of HubRequest to be sent.
     */
    send(request: HubCommitWriteRequest): Promise<HubWriteResponse>;
    send(request: HubObjectQueryRequest): Promise<HubObjectQueryResponse>;
    send(request: HubCommitQueryRequest): Promise<HubCommitQueryResponse>;
    /**
     * Sends a raw (string) request body to the Hub and receives a response.
     *
     * @param message The raw request body to send.
     * @param accessToken The access token to include in the request, if any.
     */
    private makeRequest;
    /**
     * Fetch API wrapper, to allow unit testing.
     *
     * @param url The URL to make a request to.
     * @param init Request initialization details.
     */
    private callFetch;
    /**
     * Mapping of known response types.
     */
    private static responseTypes;
    /**
     * Transforms a JSON blob returned by the Hub into a subclass of HubResponse, based on the `@type`
     * field of the response.
     *
     * @param response The Hub response to be transformed.
     */
    private static mapResponseToObject;
}