import { IRestResponse } from "../common.browser/Exports.js";
import { IAuthentication, SynthesizerConfig } from "./Exports.js";
/**
 * Implements methods for speech synthesis classes, sending requests to endpoint
 * and parsing response into expected format
 * @class SynthesisRestAdapter
 */
export declare class SynthesisRestAdapter {
    private privRestAdapter;
    private privUri;
    private privEndpoint;
    private privIsCustomEndpoint;
    private privAuthentication;
    constructor(config: SynthesizerConfig, authentication: IAuthentication);
    /**
     * Sends list voices request to endpoint.
     * @function
     * @public
     * @param connectionId - guid for connectionId
     * @returns {Promise<IRestResponse>} rest response to status request
     */
    getVoicesList(connectionId: string): Promise<IRestResponse>;
    /**
     * Builds (and caches) the voices/list URI. When the caller supplied a custom endpoint with no path
     * (e.g. a custom-domain or private-link host via fromEndpoint), the host may not serve the voices/list
     * route directly and AAD token auth requires the regional host with the ocp-apim-custom-domain-name
     * query parameter. In that case we resolve the service redirect (which is exposed on the synthesis
     * route) to discover the regional host and custom-domain parameter, then retarget it to the
     * voices/list path, keeping the http(s) scheme for this REST call.
     */
    private getVoicesListUri;
}