import { HttpSendReceive } from "http-send-receive";
import { Promisable } from "type-fest";
import { Parameters } from "./utils/parameters.js";
import { Status } from "./utils/status.js";
import { Verb } from "./utils/verb.js";
export interface ClientOptions {
    baseUrl: URL;
    httpSendReceive?: HttpSendReceive;
}
export interface ClientOutgoingRequest {
    url: URL;
    method: Verb;
    headers: Parameters;
    stream?(signal?: AbortSignal): AsyncIterable<Uint8Array>;
}
export interface ClientIncomingResponse {
    status: Status;
    headers: Parameters;
    stream(signal?: AbortSignal): AsyncIterable<Uint8Array>;
}
export interface ClientMiddleware {
    (this: ClientBase, request: ClientOutgoingRequest, next: (request: ClientOutgoingRequest) => Promisable<ClientIncomingResponse>): Promisable<ClientIncomingResponse>;
}
export declare abstract class ClientBase {
    protected baseUrl: URL;
    private httpSendReceive;
    constructor(options: ClientOptions);
    registerMiddleware(middleware: ClientMiddleware): void;
    protected send(outgoingRequest: ClientOutgoingRequest): Promise<ClientIncomingResponse>;
    private middleware;
}