iamkun/dayjs
⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API
48.7k stars · 5.1k forks · JavaScript
Caution
Caution: one person wrote most of the recent commits.
Why
- One person wrote 78% of human commits in the last year, so the project depends on them continuing. (source 1, source 2)
What would change this
- A second person takes a substantial share of commits.
Maintenance
CompleteActive
- Human commits, 30 days
- 3
- Human commits, 90 days
- 10
- Human commits, 365 days
- 49
- Bot share of commits, 365 days
- 8%
- Last commit
- Sep 15, 2026 (29 days ago)
- Last human commit
- Sep 15, 2026 (29 days ago)
- Authors, 90 days
- 3
- Last release
- Aug 17, 2026 (1 month ago)
- Median PR merge time
- 4 hours
Responsiveness: of 7 recent issues, 14% got a maintainer reply. Median first response: 5 hours.
Sources: Commits, Releases, Merged pull requests, Issues
People
Complete- Owner
- Personal account
- Commits sampled
- 49 since Oct 14, 2025
- Authors for half of commits
- 1
- Authors for 80% of commits
- 2
- Contributors
- 338
Top committers
- iamkun: 78% of commits
- pavan-sh: 4% of commits
- rahulpratik: 4% of commits
- Ayo1984: 2% of commits
- MoonsvnLyn: 2% of commits
Sources: Commits, Contributors
Stars
CompleteOrganic, confidence high
Bursts
- Aug 13, 2018 to Aug 17, 2018: about 546 more stars than usual, peak 228 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
- Sep 17, 2018 to Sep 20, 2018: about 314 more stars than usual, peak 116 in one day, a shape we can't classify. Outside explanation: a jump in forks.
- Nov 9, 2018 to Nov 15, 2018: about 564 more stars than usual, peak 185 in one day, a shape we can't classify. Outside explanation: a jump in forks.
- Dec 28, 2018 to Dec 29, 2018: about 139 more stars than usual, peak 114 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
- Sep 14, 2020 to Oct 1, 2020: about 2.1k more stars than usual, peak 273 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
- Oct 9, 2022 to Oct 11, 2022: about 241 more stars than usual, peak 175 in one day, a spike that tapers off. Outside explanation: a Hacker News post, a jump in forks.
- 5 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
CompleteFlags
No risk flags.
License
- Now
- MIT (OSI-approved)
- A year ago
- MIT (OSI-approved)
Packages
- dayjs (NPM): latest 1.11.23, published Aug 17, 2026
Advisories for the latest version: none listed
Package and advisory data: deps.dev and OSV.
OpenSSF Scorecard: 5.2 out of 10 (via deps.dev).
Sources: GitHub: iamkun/dayjs, deps.dev: npm dayjs
Badge
Add this to a README to show the current verdict:
[](https://reporadar.ai/iamkun/dayjs)Earlier verdicts
- Oct 14, 2026: Caution
- Oct 13, 2026: Caution
- Oct 13, 2026: Caution
Computed 16 hours ago · method 2026.10.2