fast-check · npm — Crest of Tech

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

Table of observations (116)

Day	downloads / 30 days	Dependents
OCT 24, 2026	208,223,796	204
OCT 6, 2026	183,109,642	Not observed
OCT 5, 2026	179,101,435	Not observed
OCT 4, 2026	183,109,642	Not observed
OCT 3, 2026	183,917,800	Not observed
OCT 2, 2026	178,026,295	Not observed
OCT 1, 2026	176,418,205	Not observed
SEP 30, 2026	172,459,216	Not observed
SEP 29, 2026	168,577,346	Not observed
SEP 28, 2026	162,642,024	Not observed
SEP 27, 2026	156,825,851	Not observed
SEP 26, 2026	156,420,387	Not observed
SEP 25, 2026	157,796,017	Not observed
SEP 24, 2026	156,448,169	Not observed
SEP 23, 2026	154,492,595	Not observed
SEP 22, 2026	151,995,537	Not observed
SEP 21, 2026	147,443,859	Not observed
SEP 20, 2026	144,208,990	Not observed
SEP 19, 2026	145,544,129	Not observed
SEP 18, 2026	146,650,978	Not observed
SEP 17, 2026	145,333,269	Not observed
SEP 16, 2026	143,984,747	Not observed
SEP 15, 2026	141,336,599	Not observed
SEP 14, 2026	144,542,078	Not observed
SEP 13, 2026	140,903,988	Not observed
SEP 12, 2026	136,759,757	Not observed
SEP 11, 2026	137,575,090	Not observed
SEP 10, 2026	136,264,552	Not observed
SEP 9, 2026	134,907,848	Not observed
SEP 8, 2026	133,399,873	Not observed
SEP 7, 2026	136,391,315	Not observed
SEP 6, 2026	139,465,033	Not observed
SEP 5, 2026	140,429,507	Not observed
SEP 4, 2026	140,933,842	Not observed
SEP 3, 2026	139,833,215	Not observed
SEP 2, 2026	144,908,322	Not observed
SEP 1, 2026	142,826,771	Not observed
AUG 31, 2026	139,389,809	Not observed
AUG 30, 2026	136,513,286	Not observed
AUG 29, 2026	137,395,471	Not observed
AUG 28, 2026	138,308,516	Not observed
AUG 27, 2026	137,463,322	Not observed
AUG 26, 2026	135,753,207	Not observed
AUG 25, 2026	134,661,488	Not observed
AUG 24, 2026	131,623,449	Not observed
AUG 23, 2026	128,684,435	Not observed
AUG 22, 2026	129,646,518	Not observed
AUG 21, 2026	130,745,511	Not observed
AUG 20, 2026	130,472,455	Not observed
AUG 19, 2026	129,610,589	Not observed
AUG 18, 2026	128,375,662	Not observed
AUG 17, 2026	125,488,187	Not observed
AUG 16, 2026	123,676,712	Not observed
AUG 15, 2026	124,708,318	Not observed
AUG 14, 2026	125,898,131	Not observed
AUG 13, 2026	130,445,245	Not observed
AUG 12, 2026	129,554,878	Not observed
AUG 11, 2026	128,528,221	Not observed
AUG 10, 2026	123,201,962	Not observed
AUG 9, 2026	120,553,512	Not observed
AUG 8, 2026	121,485,376	Not observed
AUG 7, 2026	122,438,927	Not observed
AUG 6, 2026	121,861,940	Not observed
AUG 5, 2026	121,478,108	Not observed
AUG 4, 2026	120,131,020	Not observed
AUG 3, 2026	117,427,836	Not observed
AUG 2, 2026	115,114,346	Not observed
AUG 1, 2026	115,778,041	Not observed
JUL 31, 2026	117,110,294	Not observed
JUL 30, 2026	117,501,058	Not observed
JUL 29, 2026	118,760,553	Not observed
JUL 28, 2026	118,106,793	Not observed
JUL 27, 2026	116,306,163	Not observed
JUL 26, 2026	114,292,152	Not observed
JUL 20, 2026	114,333,197	Not observed
JUL 13, 2026	109,058,199	Not observed
JUL 6, 2026	106,577,579	Not observed
JUN 29, 2026	96,476,848	Not observed
JUN 22, 2026	86,449,620	Not observed
JUN 15, 2026	80,105,996	Not observed
JUN 8, 2026	75,829,413	Not observed
JUN 1, 2026	75,170,035	Not observed
MAY 25, 2026	68,377,487	Not observed
MAY 18, 2026	65,341,725	Not observed
MAY 11, 2026	60,141,829	Not observed
MAY 4, 2026	54,561,974	Not observed
APR 27, 2026	51,060,840	Not observed
APR 20, 2026	47,369,166	Not observed
APR 13, 2026	44,937,351	Not observed
APR 6, 2026	43,868,840	Not observed
MAR 30, 2026	43,657,322	Not observed
MAR 23, 2026	42,283,058	Not observed
MAR 16, 2026	40,458,155	Not observed
MAR 9, 2026	38,671,734	Not observed
MAR 2, 2026	36,867,858	Not observed
FEB 23, 2026	35,516,445	Not observed
FEB 16, 2026	33,898,630	Not observed
FEB 9, 2026	32,950,858	Not observed
FEB 2, 2026	31,339,150	Not observed
JAN 26, 2026	27,474,265	Not observed
JAN 19, 2026	24,117,113	Not observed
JAN 12, 2026	23,804,007	Not observed
JAN 5, 2026	24,076,065	Not observed
DEC 29, 2025	26,814,236	Not observed
DEC 22, 2025	28,817,723	Not observed
DEC 15, 2025	28,968,016	Not observed
DEC 8, 2025	28,289,432	Not observed
DEC 1, 2025	27,305,717	Not observed
NOV 24, 2025	26,743,635	Not observed
NOV 17, 2025	25,366,808	Not observed
NOV 10, 2025	23,909,782	Not observed
NOV 3, 2025	Not observed	Not observed
OCT 27, 2025	Not observed	Not observed
OCT 20, 2025	Not observed	Not observed
OCT 13, 2025	Not observed	Not observed
OCT 6, 2025	Not observed	Not 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 (opens in a new tab); Homepage · fast-check.dev (opens in a new tab); Source · github.com (opens in a new tab)

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 (opens in a new tab)

Dependencies latest version · v4.10.2

Runtime 1

pure-rand^8.0.0

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