Package · npm

@arktype/attest

npm · v0.56.7 · MIT

Attest is a testing library that makes your TypeScript types available at runtime, giving you access to precise type-level assertions and performance benchmarks.

Programming Languages & Compilers (primary) · Tentative

Tentative categories were assigned with moderate confidence (0.5 to 0.75): they are shown, but they do not count toward a category’s momentum. How categories work

Technologies

Install

npm install @arktype/attest

Adoption

Downloads (30 days): 10.6K; Observeddownloads / 30 days
Popularity: Lower half on npm; Derived13th percentile within npm
Dependents: Collectinghistory; Collecting
Maintenance: 0.98; DerivedRelease cadence and recency, 0 to 1
Releases per year: 40; 128 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: +10.6% · 7d; Derived+1K downloads / 30 days, SEP 30 → OCT 7
30 days: +20.9% · 30d; Derived+1.8K downloads / 30 days, SEP 7 → OCT 7
90 days: −16.6% · 90d; Derived−2.1K downloads / 30 days, JUL 6 → OCT 7
1 year: +128.3% · 1y; Derived+6K downloads / 30 days, OCT 6 → OCT 7

Adoption historydownloads / 30 days · 116 observations

Table of observations (121)

Day	downloads / 30 days	Dependents
OCT 7, 2026	10,636	Not observed
OCT 6, 2026	10,636	Not observed
OCT 5, 2026	10,833	Not observed
OCT 4, 2026	10,671	Not observed
OCT 3, 2026	10,789	Not observed
OCT 2, 2026	10,226	Not observed
OCT 1, 2026	10,138	Not observed
SEP 30, 2026	9,620	Not observed
SEP 29, 2026	9,429	Not observed
SEP 28, 2026	9,259	Not observed
SEP 27, 2026	8,823	Not observed
SEP 26, 2026	9,166	Not observed
SEP 25, 2026	9,352	Not observed
SEP 24, 2026	9,369	Not observed
SEP 23, 2026	9,143	Not observed
SEP 22, 2026	8,848	Not observed
SEP 21, 2026	8,521	Not observed
SEP 20, 2026	8,277	Not observed
SEP 19, 2026	8,444	Not observed
SEP 18, 2026	8,292	Not observed
SEP 17, 2026	8,176	Not observed
SEP 16, 2026	8,839	Not observed
SEP 15, 2026	8,684	Not observed
SEP 14, 2026	8,822	Not observed
SEP 13, 2026	8,394	Not observed
SEP 12, 2026	8,098	Not observed
SEP 11, 2026	8,243	Not observed
SEP 10, 2026	8,586	Not observed
SEP 9, 2026	8,504	Not observed
SEP 8, 2026	8,708	Not observed
SEP 7, 2026	8,797	Not observed
SEP 6, 2026	8,904	Not observed
SEP 5, 2026	9,145	Not observed
SEP 4, 2026	9,104	Not observed
SEP 3, 2026	9,167	Not observed
SEP 2, 2026	9,466	Not observed
SEP 1, 2026	9,319	Not observed
AUG 31, 2026	9,148	Not observed
AUG 30, 2026	8,976	Not observed
AUG 29, 2026	9,182	Not observed
AUG 28, 2026	9,291	Not observed
AUG 27, 2026	9,196	Not observed
AUG 26, 2026	9,172	Not observed
AUG 25, 2026	9,170	Not observed
AUG 24, 2026	9,143	Not observed
AUG 23, 2026	9,045	Not observed
AUG 22, 2026	9,267	Not observed
AUG 21, 2026	9,479	Not observed
AUG 20, 2026	9,482	Not observed
AUG 19, 2026	9,569	Not observed
AUG 18, 2026	9,666	Not observed
AUG 17, 2026	8,909	Not observed
AUG 16, 2026	8,924	Not observed
AUG 15, 2026	9,093	Not observed
AUG 14, 2026	9,246	Not observed
AUG 13, 2026	9,571	Not observed
AUG 12, 2026	9,561	Not observed
AUG 11, 2026	9,383	Not observed
AUG 10, 2026	9,053	Not observed
AUG 9, 2026	8,722	Not observed
AUG 8, 2026	9,046	Not observed
AUG 7, 2026	9,311	Not observed
AUG 6, 2026	9,281	Not observed
AUG 5, 2026	9,648	Not observed
AUG 4, 2026	9,492	Not observed
AUG 3, 2026	9,369	Not observed
AUG 2, 2026	9,349	Not observed
AUG 1, 2026	9,481	Not observed
JUL 31, 2026	9,871	Not observed
JUL 30, 2026	10,054	Not observed
JUL 29, 2026	10,115	Not observed
JUL 28, 2026	10,071	Not observed
JUL 27, 2026	9,849	Not observed
JUL 26, 2026	9,537	Not observed
JUL 20, 2026	10,186	Not observed
JUL 13, 2026	11,201	Not observed
JUL 6, 2026	12,749	Not observed
JUN 29, 2026	12,108	Not observed
JUN 22, 2026	10,989	Not observed
JUN 15, 2026	9,386	Not observed
JUN 8, 2026	7,554	Not observed
JUN 1, 2026	8,516	Not observed
MAY 25, 2026	9,251	Not observed
MAY 18, 2026	9,651	Not observed
MAY 11, 2026	9,368	Not observed
MAY 4, 2026	7,904	Not observed
APR 27, 2026	8,113	Not observed
APR 20, 2026	8,197	Not observed
APR 13, 2026	8,273	Not observed
APR 6, 2026	8,482	Not observed
MAR 30, 2026	8,516	Not observed
MAR 23, 2026	9,446	Not observed
MAR 16, 2026	9,623	Not observed
MAR 9, 2026	9,490	Not observed
MAR 2, 2026	9,321	Not observed
FEB 23, 2026	7,866	Not observed
FEB 16, 2026	8,209	Not observed
FEB 9, 2026	8,847	Not observed
FEB 2, 2026	7,990	Not observed
JAN 26, 2026	7,302	Not observed
JAN 19, 2026	6,341	Not observed
JAN 12, 2026	5,745	Not observed
JAN 5, 2026	5,507	Not observed
DEC 29, 2025	6,817	Not observed
DEC 22, 2025	6,842	Not observed
DEC 15, 2025	6,782	Not observed
DEC 8, 2025	7,231	Not observed
DEC 1, 2025	6,505	Not observed
NOV 24, 2025	6,811	Not observed
NOV 17, 2025	8,127	Not observed
NOV 10, 2025	8,802	Not observed
NOV 3, 2025	8,432	Not observed
OCT 27, 2025	7,446	Not observed
OCT 20, 2025	6,357	Not observed
OCT 13, 2025	5,014	Not observed
OCT 6, 2025	4,659	Not observed
SEP 29, 2025	Not observed	Not observed
SEP 22, 2025	Not observed	Not observed
SEP 15, 2025	Not observed	Not observed
SEP 8, 2025	Not observed	Not observed
SEP 2, 2025	Not observed	Not observed

Facts from the registry

Latest version: v0.56.7; 128 versions
First published: AUG 3, 2023
Last release: OCT 1, 2026; 23d ago
Licence: MIT
Links: npm page (opens in a new tab); Homepage · github.com (opens in a new tab); Source · github.com (opens in a new tab)

Repository

In the Crest catalog

arktypeio/arktype

TypeScript's 1:1 validator, optimized from editor to runtime

Stars: 7.9K
Forks: 166
Language: TypeScript
Last push: 23d ago
Last release: 23d ago

Linked by the package’s own registry metadata.GitHub (opens in a new tab)

Dependencies latest version · v0.56.7

Runtime 8

@ark/fs0.56.6
@ark/schema0.56.6
@ark/util0.56.6
@prettier/sync0.6.1
@typescript/analyze-trace0.10.1
@typescript/vfs1.6.1
arktype2.2.7
prettier3.6.2

Peer 1

typescript*

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