/// <reference types="node" />
import { Buffer } from 'buffer';
/**
 * DNS Record Types
 * @see https://en.wikipedia.org/wiki/List_of_DNS_record_types
 */
export type RecordType = 'A' | 'AAAA' | 'AFSDB' | 'APL' | 'AXFR' | 'CAA' | 'CDNSKEY' | 'CDS' | 'CERT' | 'CNAME' | 'DNAME' | 'DHCID' | 'DLV' | 'DNSKEY' | 'DS' | 'HINFO' | 'HIP' | 'IXFR' | 'IPSECKEY' | 'KEY' | 'KX' | 'LOC' | 'MX' | 'NAPTR' | 'NS' | 'NSEC' | 'NSEC3' | 'NSEC3PARAM' | 'NULL' | 'OPT' | 'PTR' | 'RRSIG' | 'RP' | 'SIG' | 'SOA' | 'SRV' | 'SSHFP' | 'TA' | 'TKEY' | 'TLSA' | 'TSIG' | 'TXT' | 'URI';
export type RecordClass = 'IN' | 'CS' | 'CH' | 'HS' | 'ANY';
/**
 * DNS Record types
 * @see https://en.wikipedia.org/wiki/List_of_DNS_record_types
 */
export declare namespace Record {
    interface Base {
        name: string;
        type: RecordType;
        class: RecordClass;
        ttl: number;
    }
    interface A extends Base {
        type: 'A';
        /** IP Address */
        data: string;
    }
    interface AAAA extends Base {
        type: 'AAAA';
        /** IPv6 Address */
        data: string;
    }
    interface CNAME extends Base {
        type: 'CNAME';
        /** Canonical Name */
        data: string;
    }
    interface MX extends Base {
        type: 'MX';
        data: {
            /** Mail server priority */
            preference: number;
            /** Mail server hostname */
            exchange: string;
        };
    }
    interface TXT extends Base {
        type: 'TXT';
        /** Text record data */
        data: string | Buffer | Array<string | Buffer>;
    }
}
/**
 * DNS Record type. Currently, we focus on supporting most common types: A, AAAA, CNAME, MX, TXT
 */
export type DNSRecord = Record.A | Record.AAAA | Record.CNAME | Record.MX | Record.TXT;