Refactoring Magic.dev Code for Production

Magic.dev is powerful for large refactors but can produce changes that are partially correct — most of the codebase updated correctly but with a few inconsistencies that require cleanup

Use Magic.dev for large refactors with clear, verifiable outcomes (migrating an API, updating a pattern). Follow up with a codebase-wide search to verify no old patterns remain. Run the full test suite and fix any failures before merging

Not all Magic.dev code needs refactoring. If it works, is secure, and you don't need to modify it, leave it alone. Refactor when: you need to add features and the current structure makes it difficult, bugs keep appearing in the same area of code, or onboarding new developers takes too long because the code is hard to understand.

The golden rule of refactoring: behavior stays the same, structure changes. Before refactoring any code, make sure you have tests covering the current behavior (or add them first). Refactor in small steps — change one thing at a time and verify the app still works. Use version control (git) to commit after each successful change so you can revert if something breaks.

A well-organized project has a predictable structure where anyone can find what they're looking for. Group files by feature (not by type), keep related code together, and use clear naming. Every file should have a single clear purpose. If you can't describe what a file does in one sentence, it's probably doing too much and should be split.