Package
msw
Seamless REST/GraphQL API mocking library for browser and Node.js.
Key numbers
As of 25 Sept 2026
- Weekly downloads
- 14.4m
- +159% over 12 months
- Gzip bundle size
- -
- No Bundlephobia data
- Dependencies
- 18
- Direct, from package.json
- Last release
- 2 months ago
- v2.15.0
- GitHub stars
- 18.2k
- 628 forks
- Open issues / PRs
- 33 / 4
- Contributors
- -
- Commits, last 52 weeks
- 117
Downloads
Last week 2026-09-15 to 2026-09-21
14,417,590 downloads last week, 74,689,837 in the last month. The 12-month change of +159% compares the average of the last 4 weeks with the first 4 weeks of the series.
- Releases, last 12 months
- 34298 in total
- Latest version
- 2.15.0, 8 Jul 20262 months ago
- First published
- 18 Nov 2018
- Last push to GitHub
- 24 Sept 2026same day as the snapshot
- Repository archived
- No
- Open issues
- 33
- Open pull requests
- 4
- Commits, last 52 weeks
- 117
- Dependents on npm
- 511
Major versions
- v2 first release 2.0.0, 23 Oct 2023
- v1 first release 1.0.0, 25 Jan 2023
- v0 first release 0.1.0, 18 Nov 2018
Recent releases
| Version | Published |
|---|---|
| 2.15.0 | 8 Jul 2026 |
| 2.14.7 | 7 Jul 2026 |
| 2.14.6 | 11 May 2026 |
| 2.14.5 | 8 May 2026 |
| 2.14.4 | 7 May 2026 |
| 2.14.3 | 4 May 2026 |
| 2.14.2 | 29 Apr 2026 |
| 2.14.1 | 29 Apr 2026 |
| 2.14.0 | 29 Apr 2026 |
| 2.13.6 | 24 Apr 2026 |
| 2.13.5 | 23 Apr 2026 |
| 2.13.4 | 16 Apr 2026 |
| 2.13.3 | 14 Apr 2026 |
| 2.13.2 | 8 Apr 2026 |
- Module format
- ESM + CommonJSFrom package.json type, main and exports fields
- TypeScript types
- Bundled
- Node.js engine range
- >=18
- Runtimes
- -
- Unpacked size (npm)
- 5.8 MB
- Dependencies (18)
yargscookiegraphqlrettimestatusestype-festoutvariantpicocolorsuntil-asynctough-cookiepath-to-regexp@types/statusesis-node-processheaders-polyfill@inquirer/confirm@mswjs/interceptorsstrict-event-emitter@open-draft/deferred-promise- Peer dependencies (1)
typescript
npm install mswCDN
jsDelivr: 5.4m requests in 30 days
- jsDelivr
https://cdn.jsdelivr.net/npm/msw@2.15.0/ - unpkg
https://unpkg.com/msw@2.15.0/ - esm.sh
https://esm.sh/msw@2.15.0
| Package | Weekly downloads | Gzip | Last release | Module | Comparison |
|---|---|---|---|---|---|
| json-server | 356.8k | - | 6 months ago | ESM only | msw vs json-server |
| miragejs | 264.2k | - | 2 years ago | ESM + CommonJS | msw vs miragejs |
| responselike | 24.6m | - | 11 months ago | ESM only | - |
| xhr-mock | 161.6k | - | 6 years ago | CommonJS | - |
| @web/config-loader | 221.4k | - | 2 months ago | ESM + CommonJS | - |
| @web/parse5-utils | 195.5k | - | 2 months ago | ESM + CommonJS | - |
| @web/browser-logs | 164k | - | 2 months ago | ESM + CommonJS | - |
Indexability: Indexed.