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refactor-code

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Restructure code for improved clarity and maintainability. Use when addressing code smells or technical debt.

QUICK START

How to use this skill

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/development/refactor-code-homericintelligence-projectodyssey-2/SKILL.md

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Refactor Code

Apply systematic refactoring techniques to improve code clarity, maintainability, and performance without changing functionality.

When to Use

  • Addressing code smells identified in reviews
  • Reducing cyclomatic complexity
  • Extracting methods and classes
  • Improving naming and organization

Quick Reference

# Common refactoring patterns

# Extract method
# BEFORE: Long function with multiple responsibilities
def process_data(data):
    result = validate(data)
    formatted = format_data(result)
    return save(formatted)

# AFTER: Clear single responsibility
def process_data(data):
    validated = _validate_and_format(data)
    return save(validated)

def _validate_and_format(data):
    return format_data(validate(data))

Workflow

  1. Identify refactoring targets: From code review or analysis tools
  2. Plan changes: Document what will change and why
  3. Apply refactoring: Use IDE refactoring tools or manual changes
  4. Run tests: Verify all tests still pass
  5. Verify performance: Check no performance regression

Output Format

Refactoring report:

  • Issues addressed
  • Refactoring techniques applied
  • Metrics before/after (complexity, lines of code)
  • Test coverage status
  • Performance impact

References

  • See detect-code-smells skill for identifying issues
  • See CLAUDE.md > SOLID principles for refactoring goals
  • See run-tests skill for verification