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Package · npm

fast-check

npm · v4.10.2 · MIT

Property based testing framework for JavaScript (like QuickCheck)

Install

npm install fast-check

Adoption

Downloads (30 days)
208.2M
Observeddownloads / 30 days
Popularity
Top 10% on npm
Derived96th percentile within npm
Dependents
204
Observedpackages that depend on it
Maintenance
0.94
DerivedRelease cadence and recency, 0 to 1
Releases per year
Not reported
Over the package’s 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
+33.1% · 30d
Derived+51.8M downloads / 30 days, SEP 24 → OCT 24
90 days
+82.2% · 90d
Derived+93.9M downloads / 30 days, JUL 26 → OCT 24
1 year
+770.9% · 1y
Derived+184.3M downloads / 30 days, NOV 10 → OCT 24

Adoption historydownloads / 30 days · 111 observations

NOV 10, 2025: 23,909,782 downloads / 30 daysNOV 17, 2025: 25,366,808 downloads / 30 daysNOV 24, 2025: 26,743,635 downloads / 30 daysDEC 1, 2025: 27,305,717 downloads / 30 daysDEC 8, 2025: 28,289,432 downloads / 30 daysDEC 15, 2025: 28,968,016 downloads / 30 daysDEC 22, 2025: 28,817,723 downloads / 30 daysDEC 29, 2025: 26,814,236 downloads / 30 daysJAN 5, 2026: 24,076,065 downloads / 30 daysJAN 12, 2026: 23,804,007 downloads / 30 daysJAN 19, 2026: 24,117,113 downloads / 30 daysJAN 26, 2026: 27,474,265 downloads / 30 daysFEB 2, 2026: 31,339,150 downloads / 30 daysFEB 9, 2026: 32,950,858 downloads / 30 daysFEB 16, 2026: 33,898,630 downloads / 30 daysFEB 23, 2026: 35,516,445 downloads / 30 daysMAR 2, 2026: 36,867,858 downloads / 30 daysMAR 9, 2026: 38,671,734 downloads / 30 daysMAR 16, 2026: 40,458,155 downloads / 30 daysMAR 23, 2026: 42,283,058 downloads / 30 daysMAR 30, 2026: 43,657,322 downloads / 30 daysAPR 6, 2026: 43,868,840 downloads / 30 daysAPR 13, 2026: 44,937,351 downloads / 30 daysAPR 20, 2026: 47,369,166 downloads / 30 daysAPR 27, 2026: 51,060,840 downloads / 30 daysMAY 4, 2026: 54,561,974 downloads / 30 daysMAY 11, 2026: 60,141,829 downloads / 30 daysMAY 18, 2026: 65,341,725 downloads / 30 daysMAY 25, 2026: 68,377,487 downloads / 30 daysJUN 1, 2026: 75,170,035 downloads / 30 daysJUN 8, 2026: 75,829,413 downloads / 30 daysJUN 15, 2026: 80,105,996 downloads / 30 daysJUN 22, 2026: 86,449,620 downloads / 30 daysJUN 29, 2026: 96,476,848 downloads / 30 daysJUL 6, 2026: 106,577,579 downloads / 30 daysJUL 13, 2026: 109,058,199 downloads / 30 daysJUL 20, 2026: 114,333,197 downloads / 30 daysJUL 26, 2026: 114,292,152 downloads / 30 daysJUL 27, 2026: 116,306,163 downloads / 30 daysJUL 28, 2026: 118,106,793 downloads / 30 daysJUL 29, 2026: 118,760,553 downloads / 30 daysJUL 30, 2026: 117,501,058 downloads / 30 daysJUL 31, 2026: 117,110,294 downloads / 30 daysAUG 1, 2026: 115,778,041 downloads / 30 daysAUG 2, 2026: 115,114,346 downloads / 30 daysAUG 3, 2026: 117,427,836 downloads / 30 daysAUG 4, 2026: 120,131,020 downloads / 30 daysAUG 5, 2026: 121,478,108 downloads / 30 daysAUG 6, 2026: 121,861,940 downloads / 30 daysAUG 7, 2026: 122,438,927 downloads / 30 daysAUG 8, 2026: 121,485,376 downloads / 30 daysAUG 9, 2026: 120,553,512 downloads / 30 daysAUG 10, 2026: 123,201,962 downloads / 30 daysAUG 11, 2026: 128,528,221 downloads / 30 daysAUG 12, 2026: 129,554,878 downloads / 30 daysAUG 13, 2026: 130,445,245 downloads / 30 daysAUG 14, 2026: 125,898,131 downloads / 30 daysAUG 15, 2026: 124,708,318 downloads / 30 daysAUG 16, 2026: 123,676,712 downloads / 30 daysAUG 17, 2026: 125,488,187 downloads / 30 daysAUG 18, 2026: 128,375,662 downloads / 30 daysAUG 19, 2026: 129,610,589 downloads / 30 daysAUG 20, 2026: 130,472,455 downloads / 30 daysAUG 21, 2026: 130,745,511 downloads / 30 daysAUG 22, 2026: 129,646,518 downloads / 30 daysAUG 23, 2026: 128,684,435 downloads / 30 daysAUG 24, 2026: 131,623,449 downloads / 30 daysAUG 25, 2026: 134,661,488 downloads / 30 daysAUG 26, 2026: 135,753,207 downloads / 30 daysAUG 27, 2026: 137,463,322 downloads / 30 daysAUG 28, 2026: 138,308,516 downloads / 30 daysAUG 29, 2026: 137,395,471 downloads / 30 daysAUG 30, 2026: 136,513,286 downloads / 30 daysAUG 31, 2026: 139,389,809 downloads / 30 daysSEP 1, 2026: 142,826,771 downloads / 30 daysSEP 2, 2026: 144,908,322 downloads / 30 daysSEP 3, 2026: 139,833,215 downloads / 30 daysSEP 4, 2026: 140,933,842 downloads / 30 daysSEP 5, 2026: 140,429,507 downloads / 30 daysSEP 6, 2026: 139,465,033 downloads / 30 daysSEP 7, 2026: 136,391,315 downloads / 30 daysSEP 8, 2026: 133,399,873 downloads / 30 daysSEP 9, 2026: 134,907,848 downloads / 30 daysSEP 10, 2026: 136,264,552 downloads / 30 daysSEP 11, 2026: 137,575,090 downloads / 30 daysSEP 12, 2026: 136,759,757 downloads / 30 daysSEP 13, 2026: 140,903,988 downloads / 30 daysSEP 14, 2026: 144,542,078 downloads / 30 daysSEP 15, 2026: 141,336,599 downloads / 30 daysSEP 16, 2026: 143,984,747 downloads / 30 daysSEP 17, 2026: 145,333,269 downloads / 30 daysSEP 18, 2026: 146,650,978 downloads / 30 daysSEP 19, 2026: 145,544,129 downloads / 30 daysSEP 20, 2026: 144,208,990 downloads / 30 daysSEP 21, 2026: 147,443,859 downloads / 30 daysSEP 22, 2026: 151,995,537 downloads / 30 daysSEP 23, 2026: 154,492,595 downloads / 30 daysSEP 24, 2026: 156,448,169 downloads / 30 daysSEP 25, 2026: 157,796,017 downloads / 30 daysSEP 26, 2026: 156,420,387 downloads / 30 daysSEP 27, 2026: 156,825,851 downloads / 30 daysSEP 28, 2026: 162,642,024 downloads / 30 daysSEP 29, 2026: 168,577,346 downloads / 30 daysSEP 30, 2026: 172,459,216 downloads / 30 daysOCT 1, 2026: 176,418,205 downloads / 30 daysOCT 2, 2026: 178,026,295 downloads / 30 daysOCT 3, 2026: 183,917,800 downloads / 30 daysOCT 4, 2026: 183,109,642 downloads / 30 daysOCT 5, 2026: 179,101,435 downloads / 30 daysOCT 6, 2026: 183,109,642 downloads / 30 daysOCT 24, 2026: 208,223,796 downloads / 30 days
Table of observations (113)
Daydownloads / 30 daysDependents
OCT 24, 2026208,223,796204
OCT 6, 2026183,109,642Not observed
OCT 5, 2026179,101,435Not observed
OCT 4, 2026183,109,642Not observed
OCT 3, 2026183,917,800Not observed
OCT 2, 2026178,026,295Not observed
OCT 1, 2026176,418,205Not observed
SEP 30, 2026172,459,216Not observed
SEP 29, 2026168,577,346Not observed
SEP 28, 2026162,642,024Not observed
SEP 27, 2026156,825,851Not observed
SEP 26, 2026156,420,387Not observed
SEP 25, 2026157,796,017Not observed
SEP 24, 2026156,448,169Not observed
SEP 23, 2026154,492,595Not observed
SEP 22, 2026151,995,537Not observed
SEP 21, 2026147,443,859Not observed
SEP 20, 2026144,208,990Not observed
SEP 19, 2026145,544,129Not observed
SEP 18, 2026146,650,978Not observed
SEP 17, 2026145,333,269Not observed
SEP 16, 2026143,984,747Not observed
SEP 15, 2026141,336,599Not observed
SEP 14, 2026144,542,078Not observed
SEP 13, 2026140,903,988Not observed
SEP 12, 2026136,759,757Not observed
SEP 11, 2026137,575,090Not observed
SEP 10, 2026136,264,552Not observed
SEP 9, 2026134,907,848Not observed
SEP 8, 2026133,399,873Not observed
SEP 7, 2026136,391,315Not observed
SEP 6, 2026139,465,033Not observed
SEP 5, 2026140,429,507Not observed
SEP 4, 2026140,933,842Not observed
SEP 3, 2026139,833,215Not observed
SEP 2, 2026144,908,322Not observed
SEP 1, 2026142,826,771Not observed
AUG 31, 2026139,389,809Not observed
AUG 30, 2026136,513,286Not observed
AUG 29, 2026137,395,471Not observed
AUG 28, 2026138,308,516Not observed
AUG 27, 2026137,463,322Not observed
AUG 26, 2026135,753,207Not observed
AUG 25, 2026134,661,488Not observed
AUG 24, 2026131,623,449Not observed
AUG 23, 2026128,684,435Not observed
AUG 22, 2026129,646,518Not observed
AUG 21, 2026130,745,511Not observed
AUG 20, 2026130,472,455Not observed
AUG 19, 2026129,610,589Not observed
AUG 18, 2026128,375,662Not observed
AUG 17, 2026125,488,187Not observed
AUG 16, 2026123,676,712Not observed
AUG 15, 2026124,708,318Not observed
AUG 14, 2026125,898,131Not observed
AUG 13, 2026130,445,245Not observed
AUG 12, 2026129,554,878Not observed
AUG 11, 2026128,528,221Not observed
AUG 10, 2026123,201,962Not observed
AUG 9, 2026120,553,512Not observed
AUG 8, 2026121,485,376Not observed
AUG 7, 2026122,438,927Not observed
AUG 6, 2026121,861,940Not observed
AUG 5, 2026121,478,108Not observed
AUG 4, 2026120,131,020Not observed
AUG 3, 2026117,427,836Not observed
AUG 2, 2026115,114,346Not observed
AUG 1, 2026115,778,041Not observed
JUL 31, 2026117,110,294Not observed
JUL 30, 2026117,501,058Not observed
JUL 29, 2026118,760,553Not observed
JUL 28, 2026118,106,793Not observed
JUL 27, 2026116,306,163Not observed
JUL 26, 2026114,292,152Not observed
JUL 20, 2026114,333,197Not observed
JUL 13, 2026109,058,199Not observed
JUL 6, 2026106,577,579Not observed
JUN 29, 202696,476,848Not observed
JUN 22, 202686,449,620Not observed
JUN 15, 202680,105,996Not observed
JUN 8, 202675,829,413Not observed
JUN 1, 202675,170,035Not observed
MAY 25, 202668,377,487Not observed
MAY 18, 202665,341,725Not observed
MAY 11, 202660,141,829Not observed
MAY 4, 202654,561,974Not observed
APR 27, 202651,060,840Not observed
APR 20, 202647,369,166Not observed
APR 13, 202644,937,351Not observed
APR 6, 202643,868,840Not observed
MAR 30, 202643,657,322Not observed
MAR 23, 202642,283,058Not observed
MAR 16, 202640,458,155Not observed
MAR 9, 202638,671,734Not observed
MAR 2, 202636,867,858Not observed
FEB 23, 202635,516,445Not observed
FEB 16, 202633,898,630Not observed
FEB 9, 202632,950,858Not observed
FEB 2, 202631,339,150Not observed
JAN 26, 202627,474,265Not observed
JAN 19, 202624,117,113Not observed
JAN 12, 202623,804,007Not observed
JAN 5, 202624,076,065Not observed
DEC 29, 202526,814,236Not observed
DEC 22, 202528,817,723Not observed
DEC 15, 202528,968,016Not observed
DEC 8, 202528,289,432Not observed
DEC 1, 202527,305,717Not observed
NOV 24, 202526,743,635Not observed
NOV 17, 202525,366,808Not observed
NOV 10, 202523,909,782Not observed
NOV 3, 2025Not observedNot observed
OCT 27, 2025Not observedNot observed

Facts from the registry

Latest version
v4.10.2
First published
Not reported
Last release
SEP 19, 2026
35d ago
Licence
MIT
Links
npm page
Homepage · fast-check.dev
Source · github.com

Repository

In the Crest catalog

dubzzz/fast-check

Property based testing framework for JavaScript (like QuickCheck) written in TypeScript

Stars
5.2K
Forks
214
Language
TypeScript
Last push
22d ago
Last release
35d ago

Linked by the package’s own registry metadata.GitHub

Dependencies latest version · v4.10.2

Runtime 1

  • pure-rand^8.0.0

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