Dependencies & Reuse Auditor (L3 Worker)

Specialized worker auditing dependency management and code reuse.

Purpose & Scope

• Worker in ln-620 coordinator pipeline
• Audit dependencies and reuse (Categories 7+8: Medium Priority)
• Check outdated packages, unused deps, wheel reinvention
• Calculate compliance score (X/10)

Inputs (from Coordinator)

Receives contextStore with tech stack, package manifest paths, codebase root.

Workflow

1. Parse context
2. Run dependency checks (outdated, unused, reinvented)
3. Collect findings
4. Calculate score
5. Return JSON

Audit Rules

1. Outdated Packages

Detection:

• Run npm outdated --json (Node.js)
• Run pip list --outdated --format=json (Python)
• Run cargo outdated --format=json (Rust)

Severity:

• HIGH: Major version behind (security risk)
• MEDIUM: Minor version behind
• LOW: Patch version behind

Recommendation: Update to latest version, test for breaking changes

Effort: S-M (update version, run tests)

2. Unused Dependencies

Detection:

• Parse package.json/requirements.txt
• Grep codebase for import/require statements
• Find dependencies never imported

Severity:

• MEDIUM: Unused production dependency (bloats bundle)
• LOW: Unused dev dependency

Recommendation: Remove from package manifest

Effort: S (delete line, test)

3. Available Features Not Used

Detection:

• Check for axios when native fetch available (Node 18+)
• Check for lodash when Array methods sufficient
• Check for moment when Date.toLocaleString sufficient

Severity:

• MEDIUM: Unnecessary dependency (increases bundle size)

Recommendation: Use native alternative

Effort: M (refactor code to use native API)

4. Custom Implementations

Detection:

• Grep for custom sorting algorithms
• Check for hand-rolled validation (vs validator.js)
• Find custom date parsing (vs date-fns/dayjs)

Severity:

• HIGH: Custom crypto (security risk)
• MEDIUM: Custom utilities with well-tested alternatives

Recommendation: Replace with established library

Effort: M (integrate library, replace calls)

Scoring Algorithm

penalty = (high * 1.0) + (medium * 0.5) + (low * 0.2)
score = max(0, 10 - penalty)

Output Format

{
  "category": "Dependencies & Reuse",
  "score": 7,
  "total_issues": 8,
  "high": 2,
  "medium": 4,
  "low": 2,
  "findings": [
    {
      "severity": "HIGH",
      "location": "package.json:15",
      "issue": "express v4.17.0 (current: v4.19.2, 2 major versions behind)",
      "principle": "Dependency Management / Security Updates",
      "recommendation": "Update to v4.19.2 for security fixes",
      "effort": "M"
    }
  ]
}

Version: 3.0.0 Last Updated: 2025-12-23