jestjs/jest

Delightful JavaScript Testing.

45.5k stars · 6.7k forks · TypeScript

Healthy

Healthy: actively maintained by 20 people, no known risks.

Why

No rule fired.

What would change this

A dormant maintenance status, a deprecated or archived package, a successor link, or a critical advisory would change this.

Maintenance

Complete

Active

Human commits, 30 days: 4
Human commits, 90 days: 98
Human commits, 365 days: 218
Bot share of commits, 365 days: 19%
Last commit: Oct 2, 2026 (12 days ago)
Last human commit: Sep 18, 2026 (26 days ago)
Authors, 90 days: 20
Last release: Sep 18, 2026 (26 days ago)
Median PR merge time: 3 hours

Responsiveness: of 27 recent issues, 52% got a maintainer reply. Median first response: 43 hours.

Sources: Commits, Releases, Merged pull requests, Issues

People

Complete

Owner: Organization
Commits sampled: 218 since Oct 14, 2025
Authors for half of commits: 1
Authors for 80% of commits: 13
Contributors: 426

Top committers

SimenB: 61% of commits
cpojer: 5% of commits
ahnpnl: 3% of commits
MahinAnowar: 2% of commits
soltonigiri: 2% of commits

Sources: Commits, Contributors

Stars

Complete

Organic, confidence high

Bars show stars gained each week. Orange bars overlap a burst.

Bursts

May 14, 2014 to May 23, 2014: about 978 more stars than usual, peak 326 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
Aug 31, 2016 to Sep 12, 2016: about 537 more stars than usual, peak 119 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
Dec 7, 2016 to Dec 9, 2016: about 336 more stars than usual, peak 177 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
May 6, 2017 to May 12, 2017: about 267 more stars than usual, peak 92 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
Jan 16, 2019 to Jan 17, 2019: about 61 more stars than usual, peak 56 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
Dec 22, 2020 to Dec 23, 2020: about 112 more stars than usual, peak 111 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
Jul 28, 2021 to Jul 29, 2021: about 101 more stars than usual, peak 100 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
Sep 17, 2021 to Sep 17, 2021: about 90 more stars than usual, peak 99 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
Sep 28, 2022 to Sep 28, 2022: about 50 more stars than usual, peak 59 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Jul 28, 2023 to Jul 30, 2023: about 64 more stars than usual, peak 36 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.

20 stars GitHub has since removed (tracked since Oct 13, 2026).

Anyone can buy stars for any repo; bursts alone don't prove the owner did.

The star history looks organic.

Sources: How star history is analyzed

Risk

Complete

Flags

No risk flags.

License

Now: MIT (OSI-approved)
A year ago: MIT (OSI-approved)

Packages

No published packages found.

Sources: GitHub: jestjs/jest

Badge

Add this to a README to show the current verdict:

[![RepoRadar](https://reporadar.ai/jestjs/jest/badge.svg)](https://reporadar.ai/jestjs/jest)

Earlier verdicts

Oct 14, 2026: Healthy
Oct 13, 2026: Healthy
Oct 13, 2026: Healthy

Computed 15 hours ago · method 2026.10.2