Introducing MSW 3.0
Introducing MSW 3.0 is Please spread the word. It is ranked #4419 on the Dev Radar, in Testing & observability, first seen 30 days ago and shared in 6 posts (38.6k views).
What Introducing MSW 3.0 says about itself
ESM, GraphQL subscriptions, and the best interception algorithm in the world.
Introducing MSW 3.0 - Mock Service Worker Skip to content Search K Introducing MSW 3.0 September 30, 2026 Artem Zakharchenko @kettanaito It's hard to believe it's been almost three years since the announcement of v2.0 . Adopting the Fetch API primitives for API mocking has helped us ship the unmatched developer experience, flatten the learning curve, and even uncover a few bugs in Node.js. All thanks to the fact that hundreds of thousands of developers simply started interfacing with the Fetch API more often. Today marks a new chapter in the library's development, but in many aspects, it is really a continuation of the effort started years…
What people said about Introducing MSW 3.0 on X
It surprises me how many developers miss the point that you can (and should) generate your handlers in MSW from actual API contracts, like OpenAPI! That *is* the way to drift-free mocking. Please spread the word: https://mswjs.io/ecosystem/source/ Thank you.
— @kettanaito, 17 days ago · 58 likes · see the post
One of the sweetest moments of my open-source work has happened when I was complimented on the quality of https://mswjs.io docs and then had an in-depth discussion over documentation as a whole. I dare say these are good docs. Took years to get right.
— @kettanaito, 20 days ago · 23 likes · see the post
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Introducing MSW 3.0 in numbers
- Rank on the Dev Radar: #4419 of 8801
- Shared in 6 posts by 1 account: @kettanaito
- 38.6k views on those posts
- First seen 30 days ago, last shared 17 days ago
- Pricing seen by AGK Intelligence: open source
- Market: Testing & observability
FAQ
What is Introducing MSW 3.0?
Please spread the word It was first shared on X 30 days ago and is ranked #4419 on the Dev Radar.
Is Introducing MSW 3.0 free?
It is open source.
Who shared Introducing MSW 3.0?
1 account on X, including @kettanaito, in 6 posts totalling 38.6k views.
Every post is read and classified by AGK Intelligence: what it is, which market it belongs to, and whether the link is a real tool. 31.2k posts from 5k X accounts over the last 21 days, 8.8k tools, 12 markets. New posts are collected several times an hour and the full ranking is recomputed every hour — last update 2026-10-30 21:12 UTC. Full method.