import { StateHandler, Advices } from '@rxx/core';
import { Observable, Subscription, ConnectableObservable } from 'rxjs';
import { HttpConfig, Fetch } from './types';
export declare class HttpHandler extends StateHandler {
    static displayName: string;
    private static _maxHistoryLength;
    static maxHistoryLength: number;
    static readonly maxHistoryLenght: number;
    private history;
    constructor(a?: Advices);
    clone(): HttpHandler;
    subscribe(props: {
        http: Observable<{
            type: string;
            request: HttpConfig;
        } | {
            type: string;
            request: HttpConfig;
        }[]> | {
            [key: string]: Observable<HttpConfig> | ConnectableObservable<HttpConfig>;
        };
    }): Subscription;
    push(key: string, args?: any): Promise<any>;
    private handleUploadResonse;
    private notifyUploading;
    private notifyResponse;
    private handleResponse;
    private processHeaders;
    protected getFetcher(): Fetch;
    private get;
    private post;
    private put;
    private patch;
    private delete;
    private upload;
    private getResponse;
    private getResponseTypeFromHeader;
}