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Package · npm

which-collection

npm · v1.0.2 · MIT

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

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

Install

npm install which-collection

Adoption

Downloads (30 days)
315M
Observeddownloads / 30 days
Popularity
Top 10% on npm
Derived97th percentile within npm
Dependents
649
Observedpackages that depend on it
Maintenance
0.05
DerivedRelease cadence and recency, 0 to 1
Releases per year
0.7
3 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
−2.8% · 30d
Derived−9.2M downloads / 30 days, SEP 24 → OCT 24
90 days
+10.2% · 90d
Derived+29.2M downloads / 30 days, JUL 26 → OCT 24
1 year
+102.7% · 1y
Derived+159.6M downloads / 30 days, NOV 3 → OCT 24

Adoption historydownloads / 30 days · 73 observations

JUL 26, 2026: 285,852,182 downloads / 30 daysJUL 27, 2026: 293,894,472 downloads / 30 daysJUL 28, 2026: 302,464,811 downloads / 30 daysJUL 29, 2026: 304,544,099 downloads / 30 daysJUL 30, 2026: 306,173,771 downloads / 30 daysJUL 31, 2026: 306,466,527 downloads / 30 daysAUG 1, 2026: 301,450,201 downloads / 30 daysAUG 2, 2026: 298,659,012 downloads / 30 daysAUG 3, 2026: 306,993,438 downloads / 30 daysAUG 4, 2026: 316,047,411 downloads / 30 daysAUG 5, 2026: 318,567,121 downloads / 30 daysAUG 6, 2026: 317,937,407 downloads / 30 daysAUG 7, 2026: 318,217,923 downloads / 30 daysAUG 8, 2026: 312,731,012 downloads / 30 daysAUG 9, 2026: 308,097,626 downloads / 30 daysAUG 10, 2026: 315,719,245 downloads / 30 daysAUG 11, 2026: 329,355,464 downloads / 30 daysAUG 12, 2026: 330,447,491 downloads / 30 daysAUG 13, 2026: 331,317,649 downloads / 30 daysAUG 14, 2026: 319,117,382 downloads / 30 daysAUG 15, 2026: 313,416,428 downloads / 30 daysAUG 16, 2026: 308,825,140 downloads / 30 daysAUG 17, 2026: 315,352,475 downloads / 30 daysAUG 18, 2026: 323,566,624 downloads / 30 daysAUG 19, 2026: 325,131,842 downloads / 30 daysAUG 20, 2026: 325,471,437 downloads / 30 daysAUG 21, 2026: 324,441,677 downloads / 30 daysAUG 22, 2026: 318,009,527 downloads / 30 daysAUG 23, 2026: 312,933,075 downloads / 30 daysAUG 24, 2026: 320,519,891 downloads / 30 daysAUG 25, 2026: 328,714,404 downloads / 30 daysAUG 26, 2026: 329,583,407 downloads / 30 daysAUG 27, 2026: 330,215,069 downloads / 30 daysAUG 28, 2026: 329,556,601 downloads / 30 daysAUG 29, 2026: 323,015,689 downloads / 30 daysAUG 30, 2026: 318,179,162 downloads / 30 daysAUG 31, 2026: 325,197,278 downloads / 30 daysSEP 1, 2026: 334,031,515 downloads / 30 daysSEP 2, 2026: 336,726,473 downloads / 30 daysSEP 3, 2026: 322,933,016 downloads / 30 daysSEP 4, 2026: 322,641,531 downloads / 30 daysSEP 5, 2026: 318,480,592 downloads / 30 daysSEP 6, 2026: 313,353,682 downloads / 30 daysSEP 7, 2026: 306,987,774 downloads / 30 daysSEP 8, 2026: 300,465,530 downloads / 30 daysSEP 9, 2026: 302,879,781 downloads / 30 daysSEP 10, 2026: 304,637,968 downloads / 30 daysSEP 11, 2026: 304,802,362 downloads / 30 daysSEP 12, 2026: 298,286,676 downloads / 30 daysSEP 13, 2026: 305,688,324 downloads / 30 daysSEP 14, 2026: 314,363,090 downloads / 30 daysSEP 15, 2026: 307,730,293 downloads / 30 daysSEP 16, 2026: 310,556,937 downloads / 30 daysSEP 17, 2026: 311,562,018 downloads / 30 daysSEP 18, 2026: 311,622,448 downloads / 30 daysSEP 19, 2026: 306,477,364 downloads / 30 daysSEP 20, 2026: 302,714,379 downloads / 30 daysSEP 21, 2026: 311,037,873 downloads / 30 daysSEP 22, 2026: 319,870,748 downloads / 30 daysSEP 23, 2026: 322,321,429 downloads / 30 daysSEP 24, 2026: 324,221,656 downloads / 30 daysSEP 25, 2026: 324,893,017 downloads / 30 daysSEP 26, 2026: 318,793,513 downloads / 30 daysSEP 27, 2026: 314,457,239 downloads / 30 daysSEP 28, 2026: 324,838,871 downloads / 30 daysSEP 29, 2026: 335,428,299 downloads / 30 daysSEP 30, 2026: 339,382,700 downloads / 30 daysOCT 1, 2026: 342,231,670 downloads / 30 daysOCT 2, 2026: 341,851,062 downloads / 30 daysOCT 3, 2026: 350,737,223 downloads / 30 daysOCT 4, 2026: 346,300,352 downloads / 30 daysOCT 5, 2026: 346,300,352 downloads / 30 daysOCT 24, 2026: 315,007,082 downloads / 30 days
Table of observations (73)
Daydownloads / 30 daysDependents
OCT 24, 2026315,007,082649
OCT 5, 2026346,300,352Not observed
OCT 4, 2026346,300,352Not observed
OCT 3, 2026350,737,223Not observed
OCT 2, 2026341,851,062Not observed
OCT 1, 2026342,231,670Not observed
SEP 30, 2026339,382,700Not observed
SEP 29, 2026335,428,299Not observed
SEP 28, 2026324,838,871Not observed
SEP 27, 2026314,457,239Not observed
SEP 26, 2026318,793,513Not observed
SEP 25, 2026324,893,017Not observed
SEP 24, 2026324,221,656Not observed
SEP 23, 2026322,321,429Not observed
SEP 22, 2026319,870,748Not observed
SEP 21, 2026311,037,873Not observed
SEP 20, 2026302,714,379Not observed
SEP 19, 2026306,477,364Not observed
SEP 18, 2026311,622,448Not observed
SEP 17, 2026311,562,018Not observed
SEP 16, 2026310,556,937Not observed
SEP 15, 2026307,730,293Not observed
SEP 14, 2026314,363,090Not observed
SEP 13, 2026305,688,324Not observed
SEP 12, 2026298,286,676Not observed
SEP 11, 2026304,802,362Not observed
SEP 10, 2026304,637,968Not observed
SEP 9, 2026302,879,781Not observed
SEP 8, 2026300,465,530Not observed
SEP 7, 2026306,987,774Not observed
SEP 6, 2026313,353,682Not observed
SEP 5, 2026318,480,592Not observed
SEP 4, 2026322,641,531Not observed
SEP 3, 2026322,933,016Not observed
SEP 2, 2026336,726,473Not observed
SEP 1, 2026334,031,515Not observed
AUG 31, 2026325,197,278Not observed
AUG 30, 2026318,179,162Not observed
AUG 29, 2026323,015,689Not observed
AUG 28, 2026329,556,601Not observed
AUG 27, 2026330,215,069Not observed
AUG 26, 2026329,583,407Not observed
AUG 25, 2026328,714,404Not observed
AUG 24, 2026320,519,891Not observed
AUG 23, 2026312,933,075Not observed
AUG 22, 2026318,009,527Not observed
AUG 21, 2026324,441,677Not observed
AUG 20, 2026325,471,437Not observed
AUG 19, 2026325,131,842Not observed
AUG 18, 2026323,566,624Not observed
AUG 17, 2026315,352,475Not observed
AUG 16, 2026308,825,140Not observed
AUG 15, 2026313,416,428Not observed
AUG 14, 2026319,117,382Not observed
AUG 13, 2026331,317,649Not observed
AUG 12, 2026330,447,491Not observed
AUG 11, 2026329,355,464Not observed
AUG 10, 2026315,719,245Not observed
AUG 9, 2026308,097,626Not observed
AUG 8, 2026312,731,012Not observed
AUG 7, 2026318,217,923Not observed
AUG 6, 2026317,937,407Not observed
AUG 5, 2026318,567,121Not observed
AUG 4, 2026316,047,411Not observed
AUG 3, 2026306,993,438Not observed
AUG 2, 2026298,659,012Not observed
AUG 1, 2026301,450,201Not observed
JUL 31, 2026306,466,527Not observed
JUL 30, 2026306,173,771Not observed
JUL 29, 2026304,544,099Not observed
JUL 28, 2026302,464,811Not observed
JUL 27, 2026293,894,472Not observed
JUL 26, 2026285,852,182Not observed

Facts from the registry

Latest version
v1.0.2
3 versions
First published
NOV 13, 2019
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/which-collection

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 · v1.0.2

Runtime 4

  • is-map^2.0.3
  • is-set^2.0.3
  • is-weakmap^2.0.2
  • is-weakset^2.0.3

Related packages

No related package is in the catalog yet.

Related news

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