8 Coupling and Cohesion Fixes That Made a Go CLI Navigable
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I spent 4 months refactoring a Go CLI and tracked every change in a catalog. When I looked at the 60 entries, the largest cluster wasn't about types or error handling — it was about where code lives. Coupling and cohesion problems don't cause bugs. They cause something worse: developers who can't find anything. A function in the wrong file. A type in a junk drawer package. A feature spread across 3 files when it should be in 1. Here are 8 patterns I fixed, each with before/after code from the