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Package · npm

is-weakmap

npm · v2.0.2 · MIT

Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Not filed under any category yet: no assignment reached confidence 0.5.

Install

npm install is-weakmap

Adoption

Downloads (30 days)
324.2M
Observeddownloads / 30 days
Popularity
Top 10% on npm
Derived98th percentile within npm
Dependents
649
Observedpackages that depend on it
Maintenance
0.05
DerivedRelease cadence and recency, 0 to 1
Releases per year
0.6
5 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
−0.0% · 30d
Derived−123.3K downloads / 30 days, SEP 24 → OCT 24
90 days
+13.4% · 90d
Derived+38.3M downloads / 30 days, JUL 26 → OCT 24
1 year
+108.7% · 1y
Derived+168.8M downloads / 30 days, NOV 3 → OCT 24

Adoption historydownloads / 30 days · 13 observations

SEP 24, 2026: 324,274,175 downloads / 30 daysSEP 25, 2026: 324,945,064 downloads / 30 daysSEP 26, 2026: 318,843,241 downloads / 30 daysSEP 27, 2026: 314,505,762 downloads / 30 daysSEP 28, 2026: 324,888,295 downloads / 30 daysSEP 29, 2026: 335,478,062 downloads / 30 daysSEP 30, 2026: 339,429,612 downloads / 30 daysOCT 1, 2026: 342,276,535 downloads / 30 daysOCT 2, 2026: 341,889,288 downloads / 30 daysOCT 3, 2026: 350,775,240 downloads / 30 daysOCT 4, 2026: 346,334,194 downloads / 30 daysOCT 5, 2026: 346,334,194 downloads / 30 daysOCT 24, 2026: 324,150,909 downloads / 30 days
Table of observations (13)
Daydownloads / 30 daysDependents
OCT 24, 2026324,150,909649
OCT 5, 2026346,334,194Not observed
OCT 4, 2026346,334,194Not observed
OCT 3, 2026350,775,240Not observed
OCT 2, 2026341,889,288Not observed
OCT 1, 2026342,276,535Not observed
SEP 30, 2026339,429,612Not observed
SEP 29, 2026335,478,062Not observed
SEP 28, 2026324,888,295Not observed
SEP 27, 2026314,505,762Not observed
SEP 26, 2026318,843,241Not observed
SEP 25, 2026324,945,064Not observed
SEP 24, 2026324,274,175Not observed

Facts from the registry

Latest version
v2.0.2
5 versions
First published
FEB 18, 2015
Last release
MAR 8, 2024
3y ago
Licence
MIT
Links
npm page
Homepage · github.com
Source · github.com

Repository

Not in the Crest catalog

inspect-js/is-weakmap

The catalog tracks GitHub repositories with more than 500 stars; this one has no Crest page, so its figures are not shown here.

Dependencies latest version · v2.0.2

No dependencies are recorded for the latest version.

Related packages

No related package is in the catalog yet.

Related news

No published news event mentions this package or its repository yet.