interface CacheOptions {
    ttl?: number;
}
interface DIDResolver {
    resolve(did: string): Promise<any>;
    supports(id: string): boolean;
}
export declare class CachedDIDResolver {
    private router;
    private ttl;
    private readonly CACHE_PREFIX;
    constructor(router: DIDResolver, cacheOptions?: CacheOptions);
    private getCacheKey;
    private getCacheEntry;
    private setCacheEntry;
    getCachedDIDs(): Promise<string[]>;
    resolve(did: string): Promise<any>;
    private refreshInBackground;
    /**
     * if the did is provided, it will remove the specific did from the cache
     * otherwise, it will clear the entire cache
     * @param did
     */
    clearCache(did?: string): Promise<void>;
    supports(id: string): boolean;
}
export {};
//# sourceMappingURL=cached-did-resolver.d.ts.map