chai
npmactive
chai last released 6.3.0 on 2026-09-30. Its latest version requires Node.js >=18.
Facts
- Latest release
- 6.3.0, (24 days ago)
- First published
- (14 years ago)
- Releases in the last 12 months
- 3
- Median days between releases
- 20
- Median days between major versions
- 663
- Monthly downloads
- 522,770,724
- License
- MIT
- Repository
- github.com/chaijs/chai
- Homepage
- chaijs.com
- Source
- registry.npmjs.org (checked 2026-10-19)
Major versions
7 major versions have been published.
| Major | First version | First released | Latest version | Latest released |
|---|---|---|---|---|
| 6 | 6.0.0 | 2025-08-22 | 6.3.0 | 2026-09-30 |
| 5 | 5.0.0 | 2023-12-28 | 5.3.3 | 2025-08-22 |
| 4 | 4.0.0 | 2017-05-26 | 4.5.0 | 2024-07-25 |
| 3 | 3.0.0 | 2015-06-03 | 3.5.0 | 2016-01-28 |
| 2 | 2.0.0 | 2015-02-11 | 2.3.0 | 2015-04-26 |
| 1 | 1.0.0 | 2012-05-15 | 1.10.0 | 2014-11-10 |
| 0 | 0.0.1 | 2011-12-07 | 0.5.3 | 2012-04-21 |
Runtime requirements
The latest version of chai declares these runtime constraints.
| Runtime | Constraint | Minimum version | Since version | Since |
|---|---|---|---|---|
| Node.js | >=18 | 18.0.0 | 6.0.0 | 2025-08-22 |
Supported runtimes
The latest version of chai runs on 9 tracked runtime releases.
| Runtime | Cycle | Released | End of life | LTS |
|---|---|---|---|---|
| Node.js | 26 | 2026-05-05 | 2029-04-30 | yes |
| Node.js | 25 | 2025-10-15 | 2026-06-01 | |
| Node.js | 24 | 2025-05-06 | 2028-04-30 | yes |
| Node.js | 23 | 2024-10-16 | 2025-06-01 | |
| Node.js | 22 | 2024-04-24 | 2027-04-30 | yes |
| Node.js | 21 | 2023-10-17 | 2024-06-01 | |
| Node.js | 20 | 2023-04-18 | 2026-04-30 | yes |
| Node.js | 19 | 2022-10-18 | 2023-06-01 | |
| Node.js | 18 | 2022-04-19 | 2025-04-30 | yes |
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