import type { CleanUpService } from '../services/CleanUpService.js';
/**
 * @file Handle graceful shutdown of the service.
 * @copyright Piggly Lab 2025
 * @since 7.5.0
 * @author Caique Araujo <caique@piggly.com.br>
 */
export declare class GracefulShutdownService {
    /**
     * The cleanup service to use.
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    protected cleanup?: CleanUpService;
    /**
     * Whether the service is shutting down.
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    protected is_shutting_down: boolean;
    /**
     * The timeout in milliseconds.
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    protected timeout: number;
    /**
     * Constructor.
     * @param {CleanUpService} cleanup The cleanup service to use.
     * @param {number} timeout The timeout in milliseconds. Default is 30000.
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    constructor(cleanup?: CleanUpService, timeout?: number);
    /**
     * Get the cleanup service.
     *
     * @returns {CleanUpService}
     * @throws {Error} If cleanup service is not provided.
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    get handlers(): CleanUpService;
    /**
     * Fetch the cleanup service.
     * Useful when you want to delay the cleanup to a later time.
     *
     * E.g: You want to listen for shutdown signals and it can
     * happen before the cleanup service is ready.
     *
     * If "cleanup" is not provided, it will try to load the cleanup service
     * from the ServiceProvider.
     *
     * @param {CleanUpService} cleanup The cleanup service to use.
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    fetch(cleanup?: CleanUpService): void;
    /**
     * Listen for shutdown signals.
     *
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    listen(): void;
    /**
     * Listen for uncaught exceptions and rejections.
     *
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    listenUncaught(): void;
    /**
     * Listen for user signals.
     *
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    listenUSR(): void;
    /**
     * Shutdown the service.
     *
     * @returns {Promise<void>}
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    shutdown(): Promise<void>;
    /**
     * Clean up the service.
     *
     * @returns {Promise<boolean>}
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    protected _clean(): Promise<boolean>;
    /**
     * Shutdown the service.
     *
     * @param {string} signal The signal that triggered the shutdown.
     * @returns {Promise<void>}
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    private _shutdown;
    /**
     * Resolve the graceful shutdown service.
     * It will load the CleanUpService from the ServiceProvider.
     *
     * @param {number} timeout The timeout in milliseconds. Default is 30000.
     * @returns {GracefulShutdownService}
     * @since 7.5.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    static resolve(timeout?: number): GracefulShutdownService;
}