import { Worker as WorkerThread, WorkerOptions, MessagePort } from 'worker_threads';
import { Serializable, SerializableInput } from '../types';
export interface WorkerThreadOptions extends WorkerOptions {
    /** Data to send to the cluster. */
    clusterData?: NodeJS.ProcessEnv | undefined;
}
export declare class Worker {
    private file;
    /** The worker process. */
    process: WorkerThread | null;
    /** The options for the worker process. */
    workerOptions: WorkerOptions;
    /** Type-safe listener manager */
    private _listeners;
    /** Creates an instance of Worker. */
    constructor(file: string, options: WorkerThreadOptions);
    /** Spawns the worker. */
    spawn(): WorkerThread;
    /** Respawns the worker. */
    respawn(): Promise<WorkerThread>;
    /** Kills the worker with proper cleanup. */
    kill(): Promise<boolean>;
    /** Clean up worker and listeners */
    private _cleanup;
    /** Sends a message to the worker. */
    send<T extends Serializable>(message: SerializableInput<T, true> | unknown): Promise<void>;
}
/** Worker client class. */
export declare class WorkerClient {
    /** The IPC port of the worker. */
    readonly ipc: MessagePort | null;
    /** Creates an instance of WorkerClient. */
    constructor();
    /** Sends a message to the worker. */
    send<T extends Serializable>(message: SerializableInput<T, true> | unknown): Promise<void>;
}