/**
 * Discovery cache for OIDC metadata with in-flight request deduplication
 * @internal
 */
import type * as jose from "jose";
import * as oauth from "oauth4webapi";
/**
 * Options for the discovery cache.
 */
interface CacheOptions {
    /**
     * Time-to-live in seconds for cached entries. Default: 600
     */
    ttl?: number;
    /**
     * Maximum number of domain entries to cache. Default: 100
     */
    maxEntries?: number;
}
/**
 * Discovery cache for OIDC metadata with in-flight deduplication and JWKS caching.
 *
 * Features:
 * - LRU eviction when max entries is reached
 * - TTL-based lazy expiration
 * - In-flight request deduplication (multiple requests for the same domain are deduplicated)
 * - Automatic rejection cleanup if a request fails
 * - Co-located JWKS cache for jose
 * - Hard boundary eviction (LRU)
 *
 * @internal
 */
export declare class DiscoveryCache {
    private cache;
    private inFlight;
    private jwksCache;
    private ttl;
    private maxEntries;
    /**
     * Creates a new DiscoveryCache instance.
     *
     * @param options - Cache configuration options
     */
    constructor(options?: CacheOptions);
    /**
     * Gets or fetches discovery metadata for a domain.
     *
     * Implements in-flight deduplication: if multiple calls are made for the same domain
     * before the first completes, they all await the same promise.
     *
     * @param domain - The Auth0 domain to fetch metadata for
     * @param fetchMetadata - Async function that fetches the metadata if not cached
     * @returns A promise resolving to the authorization server metadata
     *
     * @internal
     */
    get(domain: string, fetchMetadata: (domain: string) => Promise<oauth.AuthorizationServer>): Promise<oauth.AuthorizationServer>;
    /**
     * Gets or creates a JWKS cache entry for the given JWKS URI.
     *
     * The JWKS cache is separate from the discovery metadata cache and has
     * its own size limit.
     *
     * @param jwksUri - The JWKS endpoint URI
     * @returns The JWKS cache object (jose.JWKSCacheInput format)
     *
     * @internal
     */
    getJwksCacheForUri(jwksUri: string): jose.JWKSCacheInput;
    /**
     * Clears all cached entries (discovery metadata and JWKS cache).
     *
     * @internal
     */
    clear(): void;
}
export {};