import NodeCache from "node-cache";
import { type DNSList } from "../utils/dns.js";
declare class DNSCache {
    cache: NodeCache;
    constructor();
    get(topLevelDomain: string): Promise<string | null>;
    set(dnsList: DNSList): Promise<void>;
    flush(): void;
}
export declare const dnsCache: DNSCache;
export {};