import type { ClientHttp2Stream, IncomingHttpHeaders, OutgoingHttpHeaders } from 'node:http2';
import { Http2Client, Http2TimeoutError } from './http2';
export type RequestInfo = string | URL;
export interface RequestInit {
    method?: string;
    headers?: OutgoingHttpHeaders;
    body?: string | Buffer;
    keepAlive?: boolean | number;
    timeout?: number;
}
export interface Response {
    readonly headers: IncomingHttpHeaders;
    readonly ok: boolean;
    readonly status: number;
    readonly statusText: string;
    readonly url: string;
    readonly body: ClientHttp2Stream;
    buffer(): Promise<Buffer>;
    arrayBuffer(): Promise<ArrayBuffer>;
    json<T = any>(): Promise<T>;
    text(): Promise<string>;
    close(): void;
    destroy(): void;
}
export { Http2TimeoutError };
export declare class FetchClient {
    http2Client: Http2Client;
    constructor();
    fetch(input: RequestInfo, init?: RequestInit): Promise<Response>;
}
export declare function fetch(input: RequestInfo, init?: RequestInit): Promise<Response>;