import { AbstractParent } from '../AbstractParent';
import { SmtpEmailConfigurer } from '../grammar';
import { Configurer, Scope } from '../Configurer';
import { Provider } from '@zetapush/core';
import { Email } from '../../api';
import { ConfigureSmtpTransport } from '../../../common/core/email/email-utils';
export declare class SmtpEmailConfigurerImpl<P> extends AbstractParent<P> implements SmtpEmailConfigurer<P>, Configurer {
    private defaults;
    private mailer;
    private scope;
    private smtpHost?;
    private smtpPort?;
    private smtpUser?;
    private smtpPassword?;
    private enableSsl?;
    private enableTls?;
    private alternativeHelper;
    constructor(parent: P, defaults: Partial<Email>, mailer: ConfigureSmtpTransport, scope: Scope);
    enable(enable: boolean): this;
    enable(enable: () => boolean | Promise<boolean>): this;
    host(smtpHost: string): SmtpEmailConfigurer<P>;
    port(smtpPort: number): SmtpEmailConfigurer<P>;
    username(smtpUser: string): SmtpEmailConfigurer<P>;
    password(smtpPassword: string): SmtpEmailConfigurer<P>;
    ssl(enableSsl: boolean): SmtpEmailConfigurer<P>;
    starttls(enableTls: boolean): SmtpEmailConfigurer<P>;
    getProviders(): Promise<Provider[]>;
    private getSmtpConfiguration;
    private getDefaultPort;
}