meaningfool

Activity Log - 2025-11-26

Analysis

  • Performed Architectural Review and Refactoring of Graph Validation Feature:

    • Identified technical debt in the monolithic validateGraph function (162 lines, “God Function” mixing disparate rules)
    • Created detailed refactoring plan with 3 slices, ordered by risk: Components → Mapper → Validation Strategies
    • Executed the refactoring: extracted CustomNode, CustomEdge, edge path utilities, ReactFlow mapper, and individual validators
    • Key architectural patterns applied:
      • Strategy Pattern for Validation: Orchestrator (graph-validation.ts) coordinates validators but knows nothing about specific rules
      • Smart Components, Dumb Containers: Pushed edge path complexity down into CustomEdge so LineageGraph becomes declarative
      • Hexagonal Architecture: Domain layer (validators) is pure TypeScript with zero UI dependencies; reactflow-mapper.ts acts as Anti-Corruption Layer

  • Documented Architectural Insights:

    • Created comprehensive architecture review with Mermaid dependency diagram
    • Analyzed the codebase through the lens of Hexagonal Architecture (Ports and Adapters)
    • Key insight: The separation allows business logic to be tested without a browser and makes the UI library swappable

  • Learnings Captured:

    • Robust Testing with data-testid: Relying on text content is fragile; use data-testid and configure production builds to strip them via reactRemoveProperties
    • Visual Verification Strategy: “If it’s visual, the test should take a picture” - use screenshot assertions for reproducible, version-controlled artifacts

Raw Commits

Repository: meaningfool/lineage-graph-app Commit: [f92d5f3745b8903ba0b387b06cf1d1a26fa8324b] docs: update learnings and research with architectural insights

Repository: meaningfool/lineage-graph-app Commit: [ac4c703f27820f6afbc5c1222d6bfce59331ce91] chore: configure robust testing with data-testid stripping

Repository: meaningfool/lineage-graph-app Commit: [2f15e6fdc2c2e6d3c4b5d7e59476b5742bbbaf97] refactor(graph-validation): extract components, validators, and mapper

Repository: meaningfool/lineage-graph-app Commit: [16708f080ddfba14c27581529825b3a3fe772210] docs: add complex graph fixtures and refactoring plan

Repository: meaningfool/lineage-graph-app Commit: [3d0aded9e0023f95e9dba2ba84406ecadaa609bd] docs: expand hexagonal architecture analysis with detailed verdicts