import { StringRuleChecker } from './string-rule-checker';
import { EmailAddressDefinition } from './string-types';
import { GuardResult } from '../../core/guard-result';
/**
 * Email address pattern matching 99% of email addresses.
 */
export declare const QUICK_EMAIL_ADDRESS_PATTERN = "^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+[.][a-zA-Z]{2,4}$";
/**
 * RFC5322 email address pattern matching 99.9% of email addresses.
 *
 * Lightened RFC 5322 implementation omitting:
 * - IP addresses.
 * - domain-specific addresses.
 * - the syntax using double quotes and square brackets.
 * @see {@link https://en.wikipedia.org/wiki/Email_address#Syntax}
 */
export declare const RFC5322_EMAIL_ADDRESS_PATTERN = "^[a-zA-Z0-9!#$%&'*+/=?^_'{|}~-]+(?:[.][a-zA-Z0-9!#$%&'*+/=?^_'{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?[.])+[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$";
export declare class StringIsEmailAddress extends StringRuleChecker<{
    type: 'isEmailAddress';
    def?: EmailAddressDefinition;
}> {
    constructor(rule: {
        type: 'isEmailAddress';
        def?: EmailAddressDefinition;
    }, value: string);
    /**
     * @override
     */
    exec(): GuardResult;
    private isRfc5322;
    private isQuick;
}