import { bunker } from "@digitak/bunker";
export declare class GravityStream<Data = any> extends ReadableStream<Uint8Array> {
    #private;
    constructor(start?: (self: GravityStream<Data>) => void, encode?: typeof bunker);
    send(data: Data): void;
    sendRaw(chunk: Uint8Array): void;
    close(): void;
    error(error: Error): void;
}