You're Invited:Meet the Socket Team at BlackHat and DEF CON in Las Vegas, Aug 4-6.RSVP →
Socket
Book a DemoInstallSign in
Socket
Book a DemoInstallSign in

jest-worker

Package Overview
Dependencies
Maintainers
1
Versions
182
Alerts
File Explorer

Advanced tools

License
Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

jest-worker

0.0.0
Source
npmnpm
Version published
Weekly downloads
62M
-14.64%
Maintainers
1
Weekly downloads
 
Created

What is jest-worker?

The jest-worker npm package is a module designed to make it easy to move heavy processing tasks to child processes, thus enabling better use of multi-core systems and improving the performance of Node.js applications. It is primarily used to parallelize work across processes and manage communication between the main thread and worker threads.

What are jest-worker's main functionalities?

Creating a Worker Pool

This feature allows you to create a pool of workers that can execute functions from a specified module file. The 'heavyTask.js' module would export the functions that you want to run on separate threads.

const { Worker } = require('jest-worker');
const worker = new Worker(require.resolve('./heavyTask.js'));
const result = await worker.myHeavyTask(args);

Sending and Receiving Data

With jest-worker, you can send data to worker threads for processing and receive the processed data back in the main thread. The 'dataProcessor.js' module would contain the 'processData' function that handles the data processing logic.

const { Worker } = require('jest-worker');
const worker = new Worker(require.resolve('./dataProcessor.js'));
const processedData = await worker.processData(rawData);

Ending Worker Processes

This feature allows you to properly shut down the worker processes once you're done with them, freeing up system resources.

const { Worker } = require('jest-worker');
const worker = new Worker(require.resolve('./task.js'));
// ... use the worker
await worker.end();

Other packages similar to jest-worker

    workerpool

    The 'workerpool' package is similar to 'jest-worker' in that it also allows you to offload tasks to a pool of workers. It provides a different API and additional features like timeouts and the ability to cancel tasks.

    threads

    The 'threads' package is another alternative that offers a high-level abstraction for working with Web Workers or Node's Worker Threads. It has a different API design and supports transferable objects for efficient data transfer.

    tiny-worker

    The 'tiny-worker' package is a minimalistic implementation of the Web Workers API for Node.js. It is lightweight and simple to use but does not offer the same level of functionality or control over worker management as 'jest-worker'.

FAQs

Package last updated on 03 Oct 2017

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

Tracking Protestware Spread: 28 npm Packages Affected by Payload Targeting Russian-Language Users

Research

/

Security News

Tracking Protestware Spread: 28 npm Packages Affected by Payload Targeting Russian-Language Users

Undocumented protestware found in 28 npm packages disrupts UI for Russian-language users visiting Russian and Belarusian domains.

By Olivia Brown  -  Jul 15, 2025