The Refactor Preflight: 20 Minutes That Decide Your Outcome
This story is from 2026-09-02. It is preserved in the archive; the latest stories are on the live feed.
Legacy refactors rarely fail because the new code crashes. They fail because you changed a behavior no one documented. You can catch that before writing the first new line. This preflight takes twenty minutes. It uses characterization tests, a mutation check, and one small diff. No theoretical puri…
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- 2026-09-02 08:46 · DEV Community — AI
The Refactor Preflight: 20 Minutes That Decide Your Outcome