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refactor - Improve code structure without changing behavior

Refactors existing code to improve maintainability, readability, type safety, and design while preserving external behavior.

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Updated: 2026-10-02

Capabilities

Typical Inputs

Typical Outputs

What this skill does

Preserve external behavior
Extract focused functions
Rename variables
Split large classes
Improve type safety
Remove code smells
Apply design patterns

Inputs

Existing source code
Code smells
Test suite
Refactoring objective

Outputs

Refactored source files
Improved code structure
Test results

Requirements

Source

Spec: SKILL.md

code refactoring

maintainability

design patterns

Preserve external behavior

Extract focused functions

Rename variables

Split large classes

Existing source code

Refactored source files

Improved code structure