> complexity-guardrails

Keep cyclomatic complexity low; flatten control flow, extract helpers, and prefer table-driven/strategy patterns over large switches

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$curl "https://skillshub.wtf/noartem/skills/complexity-guardrails?format=md"
SKILL.mdcomplexity-guardrails

Complexity Guardrails

Design to keep complexity low from day one.

Targets

  • Cyclomatic complexity per function ≤ 7 (start splitting at 5)
  • Function length ≤ 80 lines (aim for ≤ 30)
  • One responsibility per function; one axis of variation per module

Tactics

  • Use early returns and guard clauses; avoid deep nesting
  • Extract branch bodies into named helpers
  • Replace long if/else/switch with tables (maps) or strategies
  • Separate phases: parse → validate → normalize → act

Signs to refactor now

  • Hard-to-test code paths
  • Repeated conditionals with subtle differences
  • Mixed concerns (IO, validation, transformation) in one method

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first seenMar 17, 2026
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noartem/skills
by noartem
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