import { AxiosError, CancelTokenSource, AxiosInstance } from 'axios';
import { IHttpServiceSettings } from '../types';
export declare class HttpService {
    private readonly _httpClient;
    private _pendingRequests;
    private _isOffline;
    private readonly _settings;
    private _requestProgress;
    constructor(settings?: IHttpServiceSettings);
    get client(): AxiosInstance;
    get pendingRequests(): number;
    get isOffline(): boolean;
    get requestProgress(): {
        event: ProgressEvent;
        value: number;
    };
    createCancelToken(): CancelTokenSource;
    /**
     *  Converts request body into FormData if any file detected.
     *
     *  @param data - Request body.
     */
    protected convertDataIntoFormData(data: any): any;
    /**
     *  Defines whether there any files in provided body.
     *
     *  @param body - Data structure to check.
     *  @param [removeFromBody] - Whether to remove found files from initial body.
     */
    protected getFiles(body: GenericObject, removeFromBody?: boolean): GenericObject<File>;
    protected setupHttpClientInterceptors({ httpClient, requestTimeout, shouldCatchErrors, debug, queryStringifyOptions, withCredentials, }: IHttpServiceSettings): void;
    protected setRequestProgress(event: ProgressEvent): void;
    protected increasePendingRequestsCounter(): void;
    protected decreasePendingRequestsCounter(): void;
    protected checkIfOffline(): void;
    protected logError(err: AxiosError, isCancel?: boolean): void;
    protected catchError(err: AxiosError, isCancel?: boolean): IHttpError & {
        errors?: IValidationError[];
    };
}
export declare const httpService: HttpService;