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[Eksonurit]

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[mateacademy-ai-mentor]

Review Summary

Your server implementation overall meets the core requirements for the task: it correctly uses http.createServer, streaming with PassThrough, and zlib to handle /compress POST requests and return properly named compressed files. The routing and status handling are sound, with unmatched routes returning 404 as expected, and invalid form cases (missing file or unsupported compressionType) resulting in 400 responses, which aligns with the specification. The only notable mismatch is that you currently treat all non-POST methods to /compress as 400, whereas the checklist explicitly calls out GET /compress for that behavior, but this is a narrow over-specification rather than a functional break. There is no evidence that this broader 400 handling will cause runtime errors or violate a hard requirement, so it does not rise to the level of a critical blocker. If you want to align perfectly with [CHECKLIST ITEM #12], you could later refine the condition to req.method === 'GET' && req.url === '/compress' to avoid affecting methods like PUT or DELETE. Overall, your solution behaves correctly for the required inputs and fulfills the main backend compression features, so I am approving your work. Keep up the good work and consider that small adjustment for even tighter spec compliance in a follow-up.

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[mateacademy-ai-mentor]

This condition treats any method other than POST to /compress as 400, while the requirement specifically mentions handling GET requests with 400. Consider changing this to explicitly check req.method === 'GET' && req.url === '/compress' so the behavior matches checklist item #12 more precisely and avoids unintended 400 responses for other HTTP methods.