import type { IMainIO, IStdinReply, IStdinRequest } from './defs';
import { MainIO } from './main_io';
export declare class ServiceWorkerMainIO extends MainIO implements IMainIO {
    constructor(baseUrl: string, browsingContextId: string, shellId: string);
    handleStdin(request: IStdinRequest): Promise<IStdinReply>;
    testWithTimeout(timeoutMs: number): Promise<boolean>;
    private _utils;
}