/**
 * What the generated worker is told about the project. `app` is the
 * installable app (caching, offline page, update flow); `notify` only shows
 * notifications — it has no fetch handler, so the network is untouched.
 */
export interface ServiceWorkerConfig {
    version: string;
    mode: 'app' | 'notify';
    appName: string;
    /** False for a password-protected site: nothing is cached or precached. */
    cacheContent: boolean;
    /** Start URLs precached at install, with the build assets they reference. */
    precacheUrls: string[];
    /** Prefix patterns (see `toNetworkOnlyPattern`) never answered from the cache. */
    networkOnly: string[];
    defaultLocale: string;
    /** Locales served under a `/<locale>` prefix; stripped before matching `networkOnly`. */
    prefixedLocales: string[];
    /** The code Next.js also serves the default language under (`/en/checkout`); stripped too. */
    defaultLocalePrefix: string;
    /** Shown on a notification that carries no icon of its own. */
    notificationIcon: string | null;
    /** Present when the project stores push subscriptions (re-subscription on rotation). */
    push: {
        vapidPublicKey: string;
        subscriptionsPath: string;
    } | null;
}
/**
 * The service worker, `public/sw.js`. Authored as plain source text on purpose:
 * it runs in the visitor's browser exactly as written, and must never pass
 * through a bundler or a minifier. It contains no backslash and no template
 * literal, because this module embeds it in one.
 */
export declare const buildServiceWorkerSource: (config: ServiceWorkerConfig, offlinePages: Record<string, string>) => string;
/**
 * What an earlier publish's worker is replaced with once the app is no longer
 * installable: it takes over at once, deletes every cache the app created and
 * unregisters itself. It has no fetch handler, so the pages already open keep
 * working from the network — nobody is reloaded in the middle of a checkout.
 */
export declare const buildRetiringWorkerSource: () => string;
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