export type HttpMethod = 'HEAD' | 'GET' | 'POST' | 'PUT' | 'DELETE';
export type FetchFunction = (input: RequestInfo, init?: RequestInit) => Promise<Response>;
export declare class HttpError extends Error {
    readonly status: number;
    readonly message: string;
    readonly data: ResponseInit;
    constructor(status: number, message: string, data: ResponseInit);
}