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clean-code

Skill0 starsChanged 54 days agoApache-2.0View on GitHub

Gate-map for code quality — which gate mechanically enforces each limit (jscpd/knip/madge/complexity/ratchet). Use when reviewing code quality or before adding code that might duplicate or over-complicate.

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SKILL.md

Clean Code

This skill is a gate-map, not a lecture. Every limit below is mechanically enforced — the gate is the source of truth. When in doubt, run the gate; don't argue the principle.

Limits → enforcing gate

ConcernLimitEnforced by
DRY / duplicationclones below threshold; no copy-pastejscpd (CANON-22) + debt ratchet — no net increase (Lehman entropy)
Complexity (KISS)cyclomatic ≤ 10 per functioneslint complexity rule + debt ratchet
No dead code (YAGNI)no unused files/exportsknip
No cyclesno circular importsmadge --circular
No bloatfile / LOC ceilingsbloat ratchet + debt ratchet

When a gate fires

Fix the root cause — extract the shared helper, simplify the function, delete the dead branch — or run arbiter lifecycle record-debt with a rationale. A symptom patch over a flagged smell is a stop condition (see 90-exec-protocol.md → Root-Cause Discipline). Juergens'09: an inconsistent clone (duplicated, then edited in one copy only) is a latent bug — dedup before it diverges.

Naming & extraction (review heuristic — not gated)

  • Names reveal intent: verb+noun functions (getUserById); is/has/can booleans; no cryptic abbreviations.
  • Repeated block → extract function. Long if/else on a type → polymorphism. One-liner wrapper that adds no clarity → inline. Complex expression → extract variable.
  • TypeScript: no any (use unknown and narrow — enforced by the check-no-any hook, INV-04); const over let; discriminated unions over nullable fields.

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