jest-worker
npmv30.5.1TypeScriptModule for executing heavy tasks under forked processes in parallel, by providing a `Promise` based interface, minimum overhead, and bound workers.
Safe to adopt
Yes — jest-worker scores well across adoption, maintenance, weight, supply chain, and licensing. No download data reported for this package yet. Last published 9 days ago. 19 releases in the last 2 years.
- ?Adoption: grade ?, Not reported by this registry.
No download data reported for this package yet.
- AMaintenance: grade A, Excellent.
Last published 9 days ago. 19 releases in the last 2 years.
- BWeight: grade B, Good.
Pulls in 20 transitive packages, about 3.1 MB installed (at least — some of the tree is still being crawled).
- ASupply chain: grade A, Excellent.
No install scripts, 5 maintainers, and a contained dependency surface.
- ALicense: grade A, Excellent.
MIT — permissive, with no copyleft found in the dependency tree.
Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.
Install cost
What you actually take on by adding jest-worker to a project.
Runtime packages this one declares itself.
Distinct packages in the full runtime tree, deduplicated the way a package manager would.
Unpacked size of this package plus its entire runtime tree.
Longest resolved dependency chain below this package.
Part of this dependency tree has not been crawled yet, so these figures are a lower bound rather than a final total.
Licenses in the dependency tree
Every license you inherit by installing jest-worker, not just its own. Check this before a legal review, not after.
Compatibility
- Node.js
- node ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0
- Module format
- ESM + CommonJS
- TypeScript
- Types included
- Install scripts
- None
Quick start
A usage example from the jest-worker README.
import {Worker as JestWorker} from 'jest-worker';
async function main() {
const worker = new JestWorker(require.resolve('./worker'));
const result = await worker.hello('Alice'); // "Hello, Alice"
}
main();Dependencies
Declared by jest-worker v30.5.1. Runtime dependencies are installed with the package; dev dependencies are not.
Runtime (5)
Dev (7)
Used by
Popular packages that depend on jest-worker.
Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
No description provided.
Jest's reporters
`jest-haste-map` is a module used by Jest, a popular JavaScript testing framework, to create a fast lookup of files in a project. It helps Jest efficiently locate and track changes in files during testing, making it particularly useful for large projects
Minimizer plugin for webpack
A metro-file-map fork for Expo used with the Metro bundler
[Experimental] - 🚇 File crawling, watching and mapping for Metro
🚇 The JavaScript bundler for React Native.
Relationship graph
Dependencies (left) and dependents (right) of jest-worker.
Frequently installed together
TypeScript definitions for node
A drop-in replacement for fs, making various improvements.
An AST-based pattern checker for JavaScript.
Prettier is an opinionated code formatter
This packages is a collection of utilities and helper functions
Delightful JavaScript Testing.
webpack Validation Utils
No description provided.
This package contains shared types of Jest's packages.
No description provided.
Convert Windows backslash paths to slash paths
ECMAScript parser
Release history
19 releases in the last two years, typically about 8 days apart.
| Version | Published | Size | License |
|---|---|---|---|
| 30.5.1latest | 9 days ago | 106 KB | MIT |
| 30.5.0 | 12 days ago | 106 KB | MIT |
| 30.4.1 | 4 months ago | 106 KB | MIT |
| 30.4.0 | 4 months ago | 106 KB | MIT |
| 30.3.0 | 6 months ago | 106 KB | MIT |
| 30.2.0 | 11 months ago | 126 KB | MIT |
| 30.1.0 | 1 year ago | 126 KB | MIT |
| 30.0.5 | 1 year ago | 126 KB | MIT |
| 30.0.2 | 1 year ago | 106 KB | MIT |
| 30.0.1 | 1 year ago | 106 KB | MIT |
| 30.0.0 | 1 year ago | 106 KB | MIT |
| 30.0.0-rc.1 | 1 year ago | 106 KB | MIT |
| 30.0.0-beta.8 | 1 year ago | 106 KB | MIT |
| 30.0.0-beta.7 | 1 year ago | 106 KB | MIT |
| 30.0.0-beta.6 | 1 year ago | 106 KB | MIT |
Overview
jest-worker is an npm package that module for executing heavy tasks under forked processes in parallel, by providing a `Promise` based interface, minimum overhead, and bound workers. It has 8 known dependents in the graph. The latest version is 30.5.1, released under the MIT license.
Who should use it
Teams working in the npm ecosystem who need module for executing heavy tasks under forked processes in parallel, by providing a `Promise` based interface, minimum overhead, and bound workers and value a focused solution.
When not to use it
Consider an alternative if you need to or if a more actively-maintained option better fits your npm stack.
Pros
- Ships TypeScript type definitions.
- Clear open-source license (MIT).
Cons
- No significant drawbacks detected from available metadata.
Auto-generated from collected registry metadata. No external claims are inferred.
Frequently asked questions
Should I use jest-worker?
Yes — jest-worker scores well across adoption, maintenance, weight, supply chain, and licensing. No download data reported for this package yet. Last published 9 days ago. 19 releases in the last 2 years.
How do I install jest-worker?
Run `npm install jest-worker` to add jest-worker to your npm project.
How many dependencies does jest-worker have?
jest-worker declares 12 direct dependencies and pulls in 20 packages in total once its runtime tree is resolved totalling about 3.1 MB on disk.
What license is jest-worker released under?
jest-worker is distributed under the MIT license. Its dependency tree also includes: ISC, MIT.
How popular is jest-worker?
npm does not publish download counts. Within PackageGraph's crawl, 8 known packages depend on jest-worker.
Is jest-worker still maintained?
The most recent release of jest-worker (v30.5.1) was published 9 days ago.
Does jest-worker run install scripts?
No. jest-worker does not define preinstall, install, or postinstall scripts, so installing it does not execute publisher-supplied code.