Package · npm

msw

npm · v3.0.2 · MIT

The industry standard for API mocking in JavaScript.

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

Install

npm install msw

Adoption

Downloads (30 days)
87.5M
Observeddownloads / 30 days
Popularity
Top 10% on npm
Derived92nd percentile within npm
Dependents
Collectinghistory
Collecting
Maintenance
0.99
DerivedRelease cadence and recency, 0 to 1
Releases per year
43
340 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
+2.3% · 7d
Derived+1.9M downloads / 30 days, SEP 29 → OCT 6
30 days
+10.1% · 30d
Derived+8M downloads / 30 days, SEP 6 → OCT 6
90 days
+15.9% · 90d
Derived+12M downloads / 30 days, JUL 6 → OCT 6
1 year
+196.9% · 1y
Derived+58.1M downloads / 30 days, NOV 10 → OCT 6

Adoption history

Adoption historydownloads / 30 days · 31 observations

SEP 6, 2026: 79,502,676 downloads / 30 daysSEP 7, 2026: 78,228,511 downloads / 30 daysSEP 8, 2026: 76,887,074 downloads / 30 daysSEP 9, 2026: 77,669,493 downloads / 30 daysSEP 10, 2026: 78,277,153 downloads / 30 daysSEP 11, 2026: 78,280,440 downloads / 30 daysSEP 12, 2026: 76,016,310 downloads / 30 daysSEP 13, 2026: 77,457,772 downloads / 30 daysSEP 14, 2026: 80,265,573 downloads / 30 daysSEP 15, 2026: 78,962,665 downloads / 30 daysSEP 16, 2026: 79,991,248 downloads / 30 daysSEP 17, 2026: 80,322,347 downloads / 30 daysSEP 18, 2026: 80,261,517 downloads / 30 daysSEP 19, 2026: 78,013,640 downloads / 30 daysSEP 20, 2026: 76,231,254 downloads / 30 daysSEP 21, 2026: 78,775,083 downloads / 30 daysSEP 22, 2026: 81,557,428 downloads / 30 daysSEP 23, 2026: 82,257,912 downloads / 30 daysSEP 24, 2026: 82,786,557 downloads / 30 daysSEP 25, 2026: 82,786,685 downloads / 30 daysSEP 26, 2026: 80,545,327 downloads / 30 daysSEP 27, 2026: 78,949,925 downloads / 30 daysSEP 28, 2026: 82,177,894 downloads / 30 daysSEP 29, 2026: 85,601,257 downloads / 30 daysSEP 30, 2026: 86,747,205 downloads / 30 daysOCT 1, 2026: 87,515,075 downloads / 30 daysOCT 2, 2026: 87,361,672 downloads / 30 daysOCT 3, 2026: 89,188,961 downloads / 30 daysOCT 4, 2026: 87,549,356 downloads / 30 daysOCT 5, 2026: 85,991,046 downloads / 30 daysOCT 6, 2026: 87,549,356 downloads / 30 days
Table of observations (31)
Daydownloads / 30 daysDependents
OCT 6, 202687,549,356Not observed
OCT 5, 202685,991,046Not observed
OCT 4, 202687,549,356Not observed
OCT 3, 202689,188,961Not observed
OCT 2, 202687,361,672Not observed
OCT 1, 202687,515,075Not observed
SEP 30, 202686,747,205Not observed
SEP 29, 202685,601,257Not observed
SEP 28, 202682,177,894Not observed
SEP 27, 202678,949,925Not observed
SEP 26, 202680,545,327Not observed
SEP 25, 202682,786,685Not observed
SEP 24, 202682,786,557Not observed
SEP 23, 202682,257,912Not observed
SEP 22, 202681,557,428Not observed
SEP 21, 202678,775,083Not observed
SEP 20, 202676,231,254Not observed
SEP 19, 202678,013,640Not observed
SEP 18, 202680,261,517Not observed
SEP 17, 202680,322,347Not observed
SEP 16, 202679,991,248Not observed
SEP 15, 202678,962,665Not observed
SEP 14, 202680,265,573Not observed
SEP 13, 202677,457,772Not observed
SEP 12, 202676,016,310Not observed
SEP 11, 202678,280,440Not observed
SEP 10, 202678,277,153Not observed
SEP 9, 202677,669,493Not observed
SEP 8, 202676,887,074Not observed
SEP 7, 202678,228,511Not observed
SEP 6, 202679,502,676Not observed

Facts from the registry

Latest version
v3.0.2
340 versions
First published
NOV 18, 2018
Last release
OCT 3, 2026
21d ago
Licence
MIT

Repository

In the Crest catalog

mswjs/msw

The industry standard for API mocking in JavaScript.

Stars
18.2K
Forks
630
Language
TypeScript
Last push
24d ago
Last release
24d ago

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

Dependencies latest version · v3.0.2

Runtime 12

  • @inquirer/confirm^6.0.11
  • @msw/url^0.1.2
  • @mswjs/interceptors^0.45.6
  • cookie^2.0.1
  • headers-polyfill^5.0.1
  • is-node-process^1.2.0
  • outvariant^1.4.3
  • rettime^0.11.12
  • tough-cookie^6.0.2
  • type-fest^5.5.0
  • until-async^3.0.2
  • yargs^18.2.0

Peer 3

  • graphql>=16
  • typescript>=5.9.x
  • vite>=6

Related news

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