import { MessageFunctionType, Result } from '../types';
export interface IsPassportNumberErrors {
    TARGET_ARGUMENT_NOT_A_STRING: MessageFunctionType;
    INVALID_COUNTRY_CODE: MessageFunctionType;
}
export declare const IS_PASSPORT_NUMBER_ERRORS: IsPassportNumberErrors;
/**
 * Check if `target` is a valid passport number
 * relative to provided `arg` ISO Country Code.
 *
 * ### Example
 * ```
 * expect(isPassportNumber('AF0549358', 'AM').value).toBeTruthy()
 * ```
 * @param target The passport number
 * @param countryCode The country code
 */
export declare function isPassportNumber(target: string, countryCode: string): Result<boolean | undefined>;