import { ValidatorFn } from '@angular/forms';
/**
 * Validator function for MAC addresses
 *
 * @description
 * Validates that the input value matches a valid MAC address format.
 * Supports both colon-separated (AA:BB:CC:DD:EE:FF) and hyphen-separated (AA-BB-CC-DD-EE-FF) formats.
 *
 * @example
 * ```typescript
 * // Basic usage in FormControl
 * const macControl = new FormControl('', [macAddressValidator()]);
 *
 * // Usage in reactive forms
 * this.deviceForm = this.fb.group({
 *   macAddress: ['', [Validators.required, macAddressValidator()]]
 * });
 *
 * // Valid inputs: 'AA:BB:CC:DD:EE:FF', 'aa:bb:cc:dd:ee:ff', 'AA-BB-CC-DD-EE-FF'
 * // Invalid inputs: 'invalid-mac', 'AA:BB:CC:DD:EE', 'GG:HH:II:JJ:KK:LL'
 * ```
 *
 * @returns ValidatorFn that returns null if valid, or validation error object if invalid
 *
 * @since 2.0.0
 * @author Juvo Rafa Team
 */
export declare function macAddressValidator(): ValidatorFn;