/**
 * DNS Record Validators
 *
 * This module provides validation functions for all supported DNS record types.
 * Each validator function performs type checking and format validation
 * according to DNS standards and RFCs.
 *
 * @example
 *
 * ```typescript
 * import { isARecord, isMXRecord } from "./validators";
 *
 * const aRecord = { type: "A", address: "192.168.1.1", ttl: 300 };
 * console.log(isARecord(aRecord)); // true
 * ```
 *
 * @packageDocumentation
 */
import type { AAAARecord, ANYRecord, ARecord, CAARecord, CNAMERecord, DNSRecord, MXRecord, NAPTRRecord, NSRecord, PTRRecord, SOARecord, SRVRecord, TLSARecord, TXTRecord, ValidationResult } from "./types";
/**
 * Validates an AAAA record (IPv6 address mapping).
 *
 * Checks that the record has the correct type, a valid IPv6 address, and an
 * optional valid TTL value.
 *
 * @example
 *
 * ```typescript
 * const record = { type: "AAAA", address: "2001:db8::1", ttl: 300 };
 * console.log(isAAAARecord(record)); // true
 *
 * const invalid = { type: "AAAA", address: "192.168.1.1" };
 * console.log(isAAAARecord(invalid)); // false
 * ```
 *
 * @param record - The record to validate
 *
 * @returns True if the record is a valid AAAA record
 *
 * @public
 */
export declare function isAAAARecord(record: unknown): record is AAAARecord;
/**
 * Validates an ANY record (can be any type)
 */
export declare function isANYRecord(record: unknown): record is ANYRecord;
/**
 * Validates an A record (IPv4 address mapping).
 *
 * Checks that the record has the correct type, a valid IPv4 address, and an
 * optional valid TTL value.
 *
 * @example
 *
 * ```typescript
 * const record = { type: "A", address: "192.168.1.1", ttl: 300 };
 * console.log(isARecord(record)); // true
 *
 * const invalid = { type: "A", address: "999.999.999.999" };
 * console.log(isARecord(invalid)); // false
 * ```
 *
 * @param record - The record to validate
 *
 * @returns True if the record is a valid A record
 *
 * @public
 */
export declare function isARecord(record: unknown): record is ARecord;
/**
 * Validates a CAA record
 */
export declare function isCAARecord(record: unknown): record is CAARecord;
/**
 * Validates a CNAME record (canonical name alias).
 *
 * Checks that the record has the correct type, a valid fully qualified domain
 * name, and an optional valid TTL value.
 *
 * @example
 *
 * ```typescript
 * const record = {
 *     type: "CNAME",
 *     value: "canonical.example.com",
 *     ttl: 300,
 * };
 * console.log(isCNAMERecord(record)); // true
 *
 * const invalid = { type: "CNAME", value: "not-a-domain" };
 * console.log(isCNAMERecord(invalid)); // false
 * ```
 *
 * @param record - The record to validate
 *
 * @returns True if the record is a valid CNAME record
 *
 * @public
 */
export declare function isCNAMERecord(record: unknown): record is CNAMERecord;
/**
 * Validates an MX record
 */
export declare function isMXRecord(record: unknown): record is MXRecord;
/**
 * Validates a NAPTR record
 */
export declare function isNAPTRRecord(record: unknown): record is NAPTRRecord;
/**
 * Validates an NS record
 */
export declare function isNSRecord(record: unknown): record is NSRecord;
/**
 * Validates a PTR record
 */
export declare function isPTRRecord(record: unknown): record is PTRRecord;
/**
 * Validates an SOA record
 */
/**
 * Validates an SOA record.
 */
export declare function isSOARecord(record: unknown): record is SOARecord;
/**
 * Validates an SRV record
 */
export declare function isSRVRecord(record: unknown): record is SRVRecord;
/**
 * Validates a TLSA record
 */
export declare function isTLSARecord(record: unknown): record is TLSARecord;
/**
 * Validates a TXT record
 */
export declare function isTXTRecord(record: unknown): record is TXTRecord;
/**
 * Validates any DNS record based on its type.
 *
 * @param record - Candidate DNS record.
 *
 * @returns `true` when the record matches a supported record validator.
 */
/**
 * Validates any supported DNS record by dispatching to its specific validator.
 */
export declare function isDNSRecord(record: unknown): record is DNSRecord;
/**
 * Validates a DNS record and returns detailed validation result
 */
export declare function validateDNSRecord(record: unknown): ValidationResult;
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