import type { IApiConnector } from "./types";
export declare const jsonContentType = "application/json";
export type Middleware = (response: Response) => Response | PromiseLike<Response>;
export type FetchFunction = (input: RequestInfo, init?: RequestInit) => Promise<Response>;
export type Serializer = (value: any) => string;
export declare function appendContentTypeHeader(contentType: string, params?: RequestInit): RequestInit;
export declare function handleErrorStatusMiddleware(response: Response): Promise<Response>;
export declare class FetchApiConnector implements IApiConnector {
    protected fetchFunction: FetchFunction;
    protected serializer: Serializer;
    protected middleware: Middleware;
    protected appendContentHeader: (params?: RequestInit) => RequestInit;
    constructor(configuration?: {
        fetchFunction?: FetchFunction;
        serializer?: Serializer;
        middleware?: Middleware;
        contentType?: string;
    });
    get(url: string, params?: RequestInit): Promise<Response>;
    post(url: string, body?: BodyInit, params?: RequestInit): Promise<Response>;
    postObject(url: string, content: any, params?: RequestInit): Promise<Response>;
    put(url: string, body?: BodyInit, params?: RequestInit): Promise<Response>;
    putObject(url: string, content: any, params?: RequestInit): Promise<Response>;
    patch(url: string, body?: BodyInit, params?: RequestInit): Promise<Response>;
    patchObject(url: string, content: any, params?: RequestInit): Promise<Response>;
    delete(url: string, body?: BodyInit, params?: RequestInit): Promise<Response>;
    deleteObject(url: string, content: any, params?: RequestInit): Promise<Response>;
}