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Package · npm

chai

npm · v6.3.0 · MIT

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

Install

npm install chai

Adoption

Downloads (30 days)
521.2M
Observeddownloads / 30 days
Popularity
Top 10% on npm
Derived99th percentile within npm
Dependents
10.6K
Observedpackages that depend on it
Maintenance
0.86
DerivedRelease cadence and recency, 0 to 1
Releases per year
7.5
111 versions over its life

Growth by period

Derived by Crest of Tech from two observations of npm’s own figure, a period apart. Nothing is stored or estimated: without an observation near the period’s start, the period is still collecting.

7 days
Collectinghistory
Collecting
30 days
+11.2% · 30d
Derived+52.6M downloads / 30 days, SEP 24 → OCT 24
90 days
+40.4% · 90d
Derived+149.9M downloads / 30 days, JUL 26 → OCT 24
1 year
+347.6% · 1y
Derived+404.8M downloads / 30 days, NOV 3 → OCT 24

Adoption historydownloads / 30 days · 13 observations

SEP 24, 2026: 468,582,394 downloads / 30 daysSEP 25, 2026: 471,110,426 downloads / 30 daysSEP 26, 2026: 463,485,296 downloads / 30 daysSEP 27, 2026: 458,401,728 downloads / 30 daysSEP 28, 2026: 474,971,716 downloads / 30 daysSEP 29, 2026: 492,042,579 downloads / 30 daysSEP 30, 2026: 499,472,972 downloads / 30 daysOCT 1, 2026: 505,688,141 downloads / 30 daysOCT 2, 2026: 508,004,921 downloads / 30 daysOCT 3, 2026: 522,770,724 downloads / 30 daysOCT 4, 2026: 518,050,445 downloads / 30 daysOCT 5, 2026: 518,050,445 downloads / 30 daysOCT 24, 2026: 521,222,313 downloads / 30 days
Table of observations (13)
Daydownloads / 30 daysDependents
OCT 24, 2026521,222,31310,611
OCT 5, 2026518,050,445Not observed
OCT 4, 2026518,050,445Not observed
OCT 3, 2026522,770,724Not observed
OCT 2, 2026508,004,921Not observed
OCT 1, 2026505,688,141Not observed
SEP 30, 2026499,472,972Not observed
SEP 29, 2026492,042,579Not observed
SEP 28, 2026474,971,716Not observed
SEP 27, 2026458,401,728Not observed
SEP 26, 2026463,485,296Not observed
SEP 25, 2026471,110,426Not observed
SEP 24, 2026468,582,394Not observed

Facts from the registry

Latest version
v6.3.0
111 versions
First published
DEC 7, 2011
Last release
SEP 30, 2026
24d ago
Licence
MIT
Links
npm page
Homepage · chaijs.com
Source · github.com

Repository

In the Crest catalog

chaijs/chai

BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.

Stars
8.3K
Forks
728
Language
JavaScript
Last push
23d ago
Last release
24d ago

Linked by the package’s own registry metadata.GitHub

Dependencies latest version · v6.3.0

No dependencies are recorded for the latest version.

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