import { Emitter } from "./util/emitter.js";
import { Request, Message, Params } from "./jsonrpc.js";
export interface Transport {
    request: (method: string, params?: Params) => Promise<unknown>;
    notification: (method: string, params?: Params) => void;
}
type ClientEvents<T> = {
    request: (request: Request) => void;
} & T;
export declare abstract class BaseTransport<T = {}> extends Emitter<ClientEvents<T>> implements Transport {
    private _requests;
    private _requestId;
    _send(_message: Message): void;
    close(): void;
    protected _onmessage(message: Message): void;
    notification(method: string, params?: Params): void;
    request(method: string, params?: Params): Promise<unknown>;
}
export {};