import { A2A } from "../../types/index.js";
export declare class Stream implements A2A.Stream {
    private _contextId;
    private _context;
    private _updates;
    private _completed;
    protected running: AsyncGenerator<A2A.Update> | null;
    constructor(_contextId: string, _context: A2A.Context, _updates?: A2A.Update[], _completed?: boolean);
    get contextId(): string;
    get isAlive(): boolean;
    kill(): Promise<void>;
    get context(): A2A.Context;
    set context(context: A2A.Context);
    get updates(): A2A.Update[];
    run({ service, }: {
        service: A2A.Service;
    }): AsyncGenerator<A2A.Update>;
    subscribe(): AsyncGenerator<A2A.Update>;
    _run({ service, }: {
        service: A2A.Service;
    }): AsyncGenerator<A2A.Update>;
}