/**
 * Service Worker detection — inspects SW registrations, cache storage, background
 * sync queues, and PWA installability for a crawled page.
 * Surfaces offline-first contracts and push-capable surfaces that HTTP-only
 * crawlers cannot observe.
 */
export interface SwRegistration {
    scope: string;
    scriptURL: string | null;
    state: 'active' | 'installing' | 'waiting' | 'none';
    updateViaCache: string;
}
export interface SwCacheEntry {
    cacheName: string;
    entryCount: number;
    sampleUrls: string[];
}
export interface BackgroundSyncInfo {
    scope: string;
    pendingTags: string[];
}
export interface PwaInfo {
    isInstallable: boolean;
    manifestUrl: string | null;
    hasPushPermission: boolean;
}
export interface ServiceWorkerResult {
    supported: boolean;
    active: boolean;
    registrations: SwRegistration[];
    cacheStorages: SwCacheEntry[];
    backgroundSync: BackgroundSyncInfo[];
    pwa: PwaInfo;
    totalCachedEntries: number;
}
export declare function inspectServiceWorker(page: any): Promise<ServiceWorkerResult>;