export declare function handlePolling(url: string, settings: any, sendRequest: (url: string, settings: any) => any): Promise<ApiResponse>;
export interface IPackageHeaders {
    name: string;
    version: string;
}
export declare function originPackageHeaders({ name, version }: IPackageHeaders): {
    "X-GDC-JS-PKG": string;
    "X-GDC-JS-PKG-VERSION": string;
};
export declare class ApiError extends Error {
    cause: any;
    constructor(message: string, cause: any);
}
export declare class ApiResponseError extends ApiError {
    response: any;
    responseBody: any;
    constructor(message: string, response: any, responseBody: any);
}
export declare class ApiNetworkError extends ApiError {
}
export declare class ApiResponse {
    response: Response;
    responseBody: string;
    constructor(response: Response, responseBody: string);
    readonly data: any;
    getData(): any;
    getHeaders(): Response;
}
export declare class XhrModule {
    private fetch;
    private configStorage;
    private tokenRequest?;
    constructor(fetch: any, configStorage: any);
    /**
     * Back compatible method for setting common XHR settings
     *
     * Usually in our apps we used beforeSend ajax callback to set the X-GDC-REQUEST header with unique ID.
     *
     * @param settings object XHR settings as
     */
    ajaxSetup(settings: any): void;
    ajax(originalUrl: string, customSettings?: {}): Promise<ApiResponse>;
    /**
     * Wrapper for xhr.ajax method GET
     */
    get(url: string, settings?: any): Promise<ApiResponse>;
    /**
     * Wrapper for xhr.ajax method HEAD
     */
    head(url: string, settings?: any): Promise<ApiResponse>;
    /**
     * Wrapper for xhr.ajax method POST
     */
    post(url: string, settings?: any): Promise<ApiResponse>;
    /**
     * Wrapper for xhr.ajax method PUT
     */
    put(url: string, settings: any): Promise<ApiResponse>;
    /**
     * Wrapper for xhr.ajax method DELETE
     */
    del(url: string, settings?: any): Promise<ApiResponse>;
    private createRequestSettings;
    private continueAfterTokenRequest;
    private handleUnauthorized;
    private logDeprecatedRestApiCall;
    private isRestApiDeprecated;
    private verifyRestApiDeprecationStatus;
}