[Analysis Layer] Change Impact Analysis - Dependency Graph Awareness #6

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1. gloomcheng

   added this to the v1.0 - AI-Native Development Platform milestone on Dec 25, 2025
2. gloomcheng

   added

   enhancementNew feature or requestNew feature or request

   priority:mediumMedium priority itemMedium priority item

   layer:analysisAnalysis Layer - static analysis & impactAnalysis Layer - static analysis & impact

   on Dec 25, 2025
3. gloomcheng commented on Dec 25, 2025

   

   gloomcheng

   on Dec 25, 2025

   ContributorAuthor

   More actions

   ✅ Issue #6 Completed: Change Impact Analysis - Dependency Graph Awareness

   Successfully implemented dependency graph and change impact analysis system.

   What was implemented:

   1. ImpactAnalyzer Service - Core dependency graph engine

      • Parses TypeScript/JavaScript imports and exports
      • Builds bidirectional dependency graph (who imports what, who depends on this)
      • Recursive traversal to find all affected files
      • Breaking change detection (removed/renamed/signature-changed exports)
      • Smart caching (5-minute TTL) for performance
      • Supports configurable depth and exclude patterns

   2. ImpactAnalysisHandler - MCP tool handler

      • 5 new MCP tools: impact-build-graph, impact-analyze, impact-preview, impact-validate, impact-stats
      • Rich impact reporting with levels (low → medium → high → critical)
      • Groups affected files by directory for clarity
      • Separates production code from test files
      • Generates actionable suggestions

   3. Impact Analysis Features

      • Pre-change preview: See what will be affected before coding
      • Full analysis: Detailed breakdown of all dependents and usage
      • Post-change validation: Verify changes didn't break imports
      • Graph statistics: Understand codebase structure

   Key Capabilities:

   • Import/export dependency tracking
   • Affected files detection with depth control
   • Impact level calculation (based on affected file count)
   • Breaking change identification
   • Test vs production file separation
   • Backward compatibility suggestions

   Example Workflow:

   1. impact-preview files=["src/utils/format.ts"] - Check before modifying
   2. Make changes to the file
   3. impact-validate files=["src/utils/format.ts"] - Verify nothing broke
   4. Review affected files and update as needed

   Impact Levels:

   • Low (0-3 files): Safe to proceed
   • Medium (4-10 files): Review affected files
   • High (11-25 files): Consider backward compatibility
   • Critical (26+ files): Major refactoring, deprecation recommended

   This completes the first Analysis Layer feature, giving AI awareness of:

   • Code dependencies and import relationships ✅
   • Ripple effects of changes before/after modifications ✅
   • Breaking changes and affected code paths ✅

   Committed in: 046e7e4
4. gloomcheng

   closed this as completedon Dec 25, 2025
5. gloomcheng

   added a commit that references this issue on Dec 25, 2025

   feat: add change impact analysis and dependency graph awareness (Issue …

   ...

   046e7e4