import type { ShellManager } from './shell_manager';
/**
 * A class that manages the Service Worker registration and communication, used to
 * access stdin whilst WebAssembly commands are running.
 * May also install its own service worker rather than using one that is already
 * installed by, for example. JupyterLite.
 */
export declare class ServiceWorkerManager {
    readonly baseUrl: string;
    readonly shellManager: ShellManager;
    constructor(baseUrl: string, shellManager: ShellManager);
    get enabled(): boolean;
    get browsingContextId(): string;
    get ready(): Promise<void>;
    private _initialize;
    private _onBroadcastMessage;
    private _pingServiceWorker;
    private _setRegistration;
    private _unregisterOldServiceWorkers;
    private _registration;
    private _ready;
    private _broadcastChannel;
    private _browsingContextId;
}