Facebook Jest by facebook
Delightful JavaScript Testing.
About Facebook Jest
From the project's README at github.com/facebook/jest. Lightly cleaned for readability; for the full source see the upstream repo.
Developer Ready: A comprehensive JavaScript testing solution. Works out of the box for most JavaScript projects.
Instant Feedback: Fast, interactive watch mode only runs test files related to changed
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 45k | github.com/facebook/jest |
| GitHub forks | 6.6k | github.com/facebook/jest |
| NPM downloads (last month) | 183606k | jest |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 12.4 years | since Dec 2013 |
| Last commit | 2 days ago | May 5, 2026 |
| Releases shipped | 214 | last: 2 months ago |
| Security policy | SECURITY.md | declared by maintainers |
| Funding links | 1 | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
Ready to self-host Facebook Jest?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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