import { FlexibleFactory } from '@devbro/neko-helper';
import { MailerProvider } from './MailerProvider.mjs';
import './Mailable.mjs';

/**
 * Factory class for creating and registering mailer providers.
 * Uses a flexible factory pattern to manage different mailer provider implementations.
 */
declare class MailerProviderFactory {
    /** The singleton factory instance */
    static instance: FlexibleFactory<MailerProvider>;
    /**
     * Registers a mailer provider factory function.
     * @template T - The provider type
     * @param key - Unique identifier for the provider
     * @param factory - Factory function that creates the provider instance
     */
    static register<T>(key: string, factory: (...args: any[]) => MailerProvider): void;
    /**
     * Creates a mailer provider instance.
     * @template T - The provider type
     * @param key - The provider identifier
     * @param args - Arguments to pass to the provider factory
     * @returns A new mailer provider instance
     */
    static create<T>(key: string, ...args: any[]): MailerProvider;
}

export { MailerProviderFactory };