gitnexus-impact-analysis

What problem does it solve? Before editing code, developers need to know what will break. This Skill answers questions like "Is it safe to change this function?" and "What depends on this?" by tracing upstream dependencies and mapping changes to affected execution flows. ## Core Features & Use Cases - Blast Radius Analysis: Uses the GitNexus impact tool to find direct callers (d=1, will break), indirect dependents (d=2), and transitive effects (d=3) for any symbol. - Pre-Commit Change Detection: Runs detect_changes on staged git changes to map modifications to affected execution processes and assign a risk level. - Risk Assessment: Classifies changes as LOW, MEDIUM, HIGH, or CRITICAL based on affected symbol counts, process involvement, and whether critical paths like auth or payments are touched. - Use Case: Before renaming a shared validateUser function, run the impact workflow to discover that loginHandler and apiMiddleware call it directly and that the LoginFlow process depends on it, then decide whether the change is safe. ## Quick Start Ask the assistant to analyze what will break if you change a specific function, for example: "What is the blast radius if I modify validateUser?"