Solution

[TetianaSobolieva]

No description provided.

[mateacademy-ai-mentor]

Review Summary

Your implementation successfully meets all core requirements. The Express server correctly provides both Users and Expenses collections with all 5 CRUD endpoints each, properly handles 400/404 error responses, uses in-memory storage as specified, and exports the app via createServer() without calling app.listen(). All 10 checklist items pass or partially pass.

A couple of minor improvements to be aware of (not blocking): the categories filter treats the parameter as a single value, so if the Swagger spec requires array support (e.g., ?categories=travel&categories=food), that logic would need updating. Additionally, PATCH on expenses doesn't currently validate that the associated user still exists, which is a optional hardening consideration.

Overall solid work—your solution is approved and ready for the next step.

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