export interface NavigationCacheEnvironment {
    isSecureContext: boolean;
    origin: string;
    caches?: CacheStorage;
    fetch: typeof fetch;
}
/**
 * Interface for a single cache instance, mirroring the Cache API.
 */
export interface NavigationCache {
    put(request: Request, response: Response): Promise<void>;
    match(request: Request): Promise<Response | undefined>;
}
/**
 * Interface for cache storage, mirroring the CacheStorage API.
 */
export interface NavigationCacheStorage {
    open(cacheName: string): Promise<NavigationCache>;
    delete(cacheName: string): Promise<boolean>;
    keys(): Promise<string[]>;
}
/**
 * Creates a default NavigationCacheStorage implementation that wraps the browser's CacheStorage API.
 * This maintains the current generation-based cache naming and eviction logic.
 */
export declare function createDefaultNavigationCacheStorage(env?: NavigationCacheEnvironment): NavigationCacheStorage | undefined;
/**
 * Preloads the RSC navigation response for a given URL into the Cache API.
 *
 * This issues a GET request with the `__rsc` query parameter set, and, on a
 * successful response, stores it in a versioned Cache using `cache.put`.
 *
 * See MDN for Cache interface semantics:
 * https://developer.mozilla.org/en-US/docs/Web/API/Cache
 */
export declare function preloadNavigationUrl(rawUrl: URL | string, env?: NavigationCacheEnvironment, cacheStorage?: NavigationCacheStorage): Promise<void>;
/**
 * Attempts to retrieve a cached navigation response for the given URL.
 *
 * Returns the cached Response if found, or undefined if not cached or if
 * CacheStorage is unavailable.
 */
export declare function getCachedNavigationResponse(rawUrl: URL | string, env?: NavigationCacheEnvironment, cacheStorage?: NavigationCacheStorage): Promise<Response | undefined>;
/**
 * Cleans up old generation caches for the current tab.
 *
 * This should be called after navigation commits to evict cache entries from
 * previous navigations. It runs asynchronously via requestIdleCallback or
 * setTimeout to avoid blocking the critical path.
 */
export declare function evictOldGenerationCaches(env?: NavigationCacheEnvironment, cacheStorage?: NavigationCacheStorage): Promise<void>;
/**
 * Increments the generation counter and schedules cleanup of old caches.
 *
 * This should be called after navigation commits to mark the current generation
 * as complete and prepare for the next navigation cycle.
 */
export declare function onNavigationCommit(env?: NavigationCacheEnvironment, cacheStorage?: NavigationCacheStorage): void;
/**
 * Scan the document for `<link rel="x-prefetch" href="...">` elements that point
 * to same-origin paths and prefetch their RSC navigation responses into the
 * Cache API.
 *
 * This is invoked after client navigations to warm the navigation cache in
 * the background. We intentionally keep Cache usage write-only for now; reads
 * still go through the normal fetch path.
 */
export declare function preloadFromLinkTags(doc?: Document, env?: NavigationCacheEnvironment, cacheStorage?: NavigationCacheStorage): Promise<void>;