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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 · 111 observations

NOV 3, 2025: 116,455,613 downloads / 30 daysNOV 10, 2025: 118,942,817 downloads / 30 daysNOV 17, 2025: 120,242,935 downloads / 30 daysNOV 24, 2025: 121,413,610 downloads / 30 daysDEC 1, 2025: 124,272,372 downloads / 30 daysDEC 8, 2025: 127,719,923 downloads / 30 daysDEC 15, 2025: 130,218,136 downloads / 30 daysDEC 22, 2025: 129,226,980 downloads / 30 daysDEC 29, 2025: 115,224,424 downloads / 30 daysJAN 5, 2026: 102,167,345 downloads / 30 daysJAN 12, 2026: 102,031,722 downloads / 30 daysJAN 19, 2026: 106,506,137 downloads / 30 daysJAN 26, 2026: 126,849,021 downloads / 30 daysFEB 2, 2026: 153,098,941 downloads / 30 daysFEB 9, 2026: 165,408,831 downloads / 30 daysFEB 16, 2026: 174,825,472 downloads / 30 daysFEB 23, 2026: 183,044,717 downloads / 30 daysMAR 2, 2026: 191,290,246 downloads / 30 daysMAR 9, 2026: 202,572,947 downloads / 30 daysMAR 16, 2026: 214,258,638 downloads / 30 daysMAR 23, 2026: 227,191,802 downloads / 30 daysMAR 30, 2026: 236,828,087 downloads / 30 daysAPR 6, 2026: 237,947,769 downloads / 30 daysAPR 13, 2026: 240,968,081 downloads / 30 daysAPR 20, 2026: 249,195,749 downloads / 30 daysAPR 27, 2026: 259,077,922 downloads / 30 daysMAY 4, 2026: 273,308,586 downloads / 30 daysMAY 11, 2026: 291,617,881 downloads / 30 daysMAY 18, 2026: 303,533,416 downloads / 30 daysMAY 25, 2026: 310,301,071 downloads / 30 daysJUN 1, 2026: 316,159,173 downloads / 30 daysJUN 8, 2026: 308,863,850 downloads / 30 daysJUN 15, 2026: 317,011,572 downloads / 30 daysJUN 22, 2026: 326,078,432 downloads / 30 daysJUN 29, 2026: 336,034,143 downloads / 30 daysJUL 6, 2026: 352,130,041 downloads / 30 daysJUL 13, 2026: 355,513,021 downloads / 30 daysJUL 20, 2026: 365,236,718 downloads / 30 daysJUL 26, 2026: 371,301,942 downloads / 30 daysJUL 27, 2026: 382,497,081 downloads / 30 daysJUL 28, 2026: 393,899,717 downloads / 30 daysJUL 29, 2026: 397,585,406 downloads / 30 daysJUL 30, 2026: 400,978,822 downloads / 30 daysJUL 31, 2026: 402,385,238 downloads / 30 daysAUG 1, 2026: 396,256,526 downloads / 30 daysAUG 2, 2026: 393,348,633 downloads / 30 daysAUG 3, 2026: 405,053,253 downloads / 30 daysAUG 4, 2026: 417,817,708 downloads / 30 daysAUG 5, 2026: 422,004,440 downloads / 30 daysAUG 6, 2026: 421,570,454 downloads / 30 daysAUG 7, 2026: 423,029,959 downloads / 30 daysAUG 8, 2026: 416,041,437 downloads / 30 daysAUG 9, 2026: 410,415,831 downloads / 30 daysAUG 10, 2026: 420,952,303 downloads / 30 daysAUG 11, 2026: 439,506,097 downloads / 30 daysAUG 12, 2026: 442,140,539 downloads / 30 daysAUG 13, 2026: 444,442,486 downloads / 30 daysAUG 14, 2026: 428,351,628 downloads / 30 daysAUG 15, 2026: 421,067,052 downloads / 30 daysAUG 16, 2026: 415,268,116 downloads / 30 daysAUG 17, 2026: 424,454,739 downloads / 30 daysAUG 18, 2026: 436,209,742 downloads / 30 daysAUG 19, 2026: 439,846,485 downloads / 30 daysAUG 20, 2026: 441,420,951 downloads / 30 daysAUG 21, 2026: 441,107,692 downloads / 30 daysAUG 22, 2026: 433,213,209 downloads / 30 daysAUG 23, 2026: 427,002,865 downloads / 30 daysAUG 24, 2026: 438,091,367 downloads / 30 daysAUG 25, 2026: 450,263,886 downloads / 30 daysAUG 26, 2026: 452,806,320 downloads / 30 daysAUG 27, 2026: 454,868,309 downloads / 30 daysAUG 28, 2026: 454,887,083 downloads / 30 daysAUG 29, 2026: 446,435,556 downloads / 30 daysAUG 30, 2026: 440,457,289 downloads / 30 daysAUG 31, 2026: 450,846,823 downloads / 30 daysSEP 1, 2026: 463,773,883 downloads / 30 daysSEP 2, 2026: 468,580,949 downloads / 30 daysSEP 3, 2026: 449,615,549 downloads / 30 daysSEP 4, 2026: 450,388,210 downloads / 30 daysSEP 5, 2026: 446,066,145 downloads / 30 daysSEP 6, 2026: 439,655,211 downloads / 30 daysSEP 7, 2026: 430,973,307 downloads / 30 daysSEP 8, 2026: 422,168,409 downloads / 30 daysSEP 9, 2026: 426,697,306 downloads / 30 daysSEP 10, 2026: 430,294,962 downloads / 30 daysSEP 11, 2026: 431,594,151 downloads / 30 daysSEP 12, 2026: 423,267,525 downloads / 30 daysSEP 13, 2026: 433,907,784 downloads / 30 daysSEP 14, 2026: 447,266,397 downloads / 30 daysSEP 15, 2026: 438,353,305 downloads / 30 daysSEP 16, 2026: 443,646,514 downloads / 30 daysSEP 17, 2026: 446,259,644 downloads / 30 daysSEP 18, 2026: 447,352,651 downloads / 30 daysSEP 19, 2026: 439,082,473 downloads / 30 daysSEP 20, 2026: 432,755,781 downloads / 30 daysSEP 21, 2026: 445,130,471 downloads / 30 daysSEP 22, 2026: 458,868,555 downloads / 30 daysSEP 23, 2026: 464,350,826 downloads / 30 daysSEP 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 (112)
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
SEP 23, 2026464,350,826Not observed
SEP 22, 2026458,868,555Not observed
SEP 21, 2026445,130,471Not observed
SEP 20, 2026432,755,781Not observed
SEP 19, 2026439,082,473Not observed
SEP 18, 2026447,352,651Not observed
SEP 17, 2026446,259,644Not observed
SEP 16, 2026443,646,514Not observed
SEP 15, 2026438,353,305Not observed
SEP 14, 2026447,266,397Not observed
SEP 13, 2026433,907,784Not observed
SEP 12, 2026423,267,525Not observed
SEP 11, 2026431,594,151Not observed
SEP 10, 2026430,294,962Not observed
SEP 9, 2026426,697,306Not observed
SEP 8, 2026422,168,409Not observed
SEP 7, 2026430,973,307Not observed
SEP 6, 2026439,655,211Not observed
SEP 5, 2026446,066,145Not observed
SEP 4, 2026450,388,210Not observed
SEP 3, 2026449,615,549Not observed
SEP 2, 2026468,580,949Not observed
SEP 1, 2026463,773,883Not observed
AUG 31, 2026450,846,823Not observed
AUG 30, 2026440,457,289Not observed
AUG 29, 2026446,435,556Not observed
AUG 28, 2026454,887,083Not observed
AUG 27, 2026454,868,309Not observed
AUG 26, 2026452,806,320Not observed
AUG 25, 2026450,263,886Not observed
AUG 24, 2026438,091,367Not observed
AUG 23, 2026427,002,865Not observed
AUG 22, 2026433,213,209Not observed
AUG 21, 2026441,107,692Not observed
AUG 20, 2026441,420,951Not observed
AUG 19, 2026439,846,485Not observed
AUG 18, 2026436,209,742Not observed
AUG 17, 2026424,454,739Not observed
AUG 16, 2026415,268,116Not observed
AUG 15, 2026421,067,052Not observed
AUG 14, 2026428,351,628Not observed
AUG 13, 2026444,442,486Not observed
AUG 12, 2026442,140,539Not observed
AUG 11, 2026439,506,097Not observed
AUG 10, 2026420,952,303Not observed
AUG 9, 2026410,415,831Not observed
AUG 8, 2026416,041,437Not observed
AUG 7, 2026423,029,959Not observed
AUG 6, 2026421,570,454Not observed
AUG 5, 2026422,004,440Not observed
AUG 4, 2026417,817,708Not observed
AUG 3, 2026405,053,253Not observed
AUG 2, 2026393,348,633Not observed
AUG 1, 2026396,256,526Not observed
JUL 31, 2026402,385,238Not observed
JUL 30, 2026400,978,822Not observed
JUL 29, 2026397,585,406Not observed
JUL 28, 2026393,899,717Not observed
JUL 27, 2026382,497,081Not observed
JUL 26, 2026371,301,942Not observed
JUL 20, 2026365,236,718Not observed
JUL 13, 2026355,513,021Not observed
JUL 6, 2026352,130,041Not observed
JUN 29, 2026336,034,143Not observed
JUN 22, 2026326,078,432Not observed
JUN 15, 2026317,011,572Not observed
JUN 8, 2026308,863,850Not observed
JUN 1, 2026316,159,173Not observed
MAY 25, 2026310,301,071Not observed
MAY 18, 2026303,533,416Not observed
MAY 11, 2026291,617,881Not observed
MAY 4, 2026273,308,586Not observed
APR 27, 2026259,077,922Not observed
APR 20, 2026249,195,749Not observed
APR 13, 2026240,968,081Not observed
APR 6, 2026237,947,769Not observed
MAR 30, 2026236,828,087Not observed
MAR 23, 2026227,191,802Not observed
MAR 16, 2026214,258,638Not observed
MAR 9, 2026202,572,947Not observed
MAR 2, 2026191,290,246Not observed
FEB 23, 2026183,044,717Not observed
FEB 16, 2026174,825,472Not observed
FEB 9, 2026165,408,831Not observed
FEB 2, 2026153,098,941Not observed
JAN 26, 2026126,849,021Not observed
JAN 19, 2026106,506,137Not observed
JAN 12, 2026102,031,722Not observed
JAN 5, 2026102,167,345Not observed
DEC 29, 2025115,224,424Not observed
DEC 22, 2025129,226,980Not observed
DEC 15, 2025130,218,136Not observed
DEC 8, 2025127,719,923Not observed
DEC 1, 2025124,272,372Not observed
NOV 24, 2025121,413,610Not observed
NOV 17, 2025120,242,935Not observed
NOV 10, 2025118,942,817Not observed
NOV 3, 2025116,455,613Not observed
OCT 27, 2025Not observedNot observed

Facts from the registry

Latest version
v6.3.0
111 versions
First published
DEC 7, 2011
Last release
SEP 30, 2026
23d 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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