/// <reference types="node" resolution-mode="require"/>
import type { Worker } from 'worker_threads';
import type { WorkerOptions } from './misc.js';
import type { MessengerRawData } from './messenger.js';
import type { BaseWorkerOptions } from './workers.js';
import type { WorkerType } from '../constants/workers.js';
import type { Counter } from '../utilities/counter.js';
import type { SharedUint32 } from '../utilities/shared_uint32.js';
export type PoolData = {
    active: Counter;
    concurrency: SharedUint32;
};
export type PoolItemEvents = {
    created: (worker: Worker) => void;
};
export type BasePoolItemConfig = {
    file: string;
};
/**
 * Used to create a `PoolItem`.
 */
export type PoolItemConfig<Type extends WorkerType = WorkerType> = {
    workerData: Type extends WorkerType.Task ? {
        type: WorkerType.Task;
        identifier: string;
        name: string;
        params: any[];
    } : {
        type: WorkerType.Service;
        identifier: string;
    };
} & BaseWorkerOptions & BasePoolItemConfig;
/**
 * Used internally by the `PoolItem` class.
 */
export type PoolItemOptions = {
    workerData: {
        identifier: string;
        type: WorkerType;
        name?: string;
        params?: any[];
        messengerTransfers: MessengerRawData[];
        messengers: Record<string, never>;
    };
    options: WorkerOptions;
    priority: boolean;
    reffed: boolean;
    shareEnv: boolean;
} & BasePoolItemConfig;