AI BriefingNetwork Mocking in Next.js with MSW (Mock Service Worker)
Key point
The Oliveyoung frontend team explains the mocking issues they faced during their Next.js migration and the background behind adopting MSW.
Details
The Oliveyoung Commerce Service development team faced several technical challenges while transitioning to a modern architecture based on Next.js and strengthening unit testing.
Previously, they used axios-mock-adapter or nock, or built Mock APIs directly using a Next.js node server. However, this approach caused the following problems.
- Code duplication and maintenance difficulty: Similar API mock code was scattered across multiple files, making test writing cumbersome
- Development bottleneck: Idle time occurred where frontend development remained on standby until backend API development was complete
- Operations and build issues: Human error in the process of changing Mock API addresses to actual server addresses, and the problem of build size growing larger because Mock data was included during builds
To solve these problems, they researched various open-source libraries, including Postman Mock Server, in search of the best alternative.
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