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refactoring

Guides incremental code restructuring while preserving behavior and passing tests.

1|Updated Apr 8, 2026
Search Tags:#code quality#testing#refactoring#maintainability#technical debt#rust#code structure
One-click install
npx skills add https://github.com/voidful/Aixlarity --skill refactoring-voidful
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: refactoring
Source: https://github.com/voidful/Aixlarity/tree/main/.aixlarity/skills/refactoring
Command: npx skills add https://github.com/voidful/Aixlarity --skill refactoring-voidful

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Codebases accumulate structural debt over time, and unstructured refactoring often breaks behavior silently. This Skill enforces a disciplined, test-guarded refactoring process so every structural change is verified, committed, and reversible. ## Core Features & Use Cases - Test-First Safety Gate: Requires a fully passing test suite and a clean commit before any structural change begins. - One-Step-at-a-Time Workflow: Each refactoring (extract, rename, move, inline) is followed by a test run and an isolated commit, never combining multiple changes. - Concrete Patterns: Provides guidance for extracting modules from oversized files, extracting traits, reducing public API surface, and separating architectural layers. - Use Case: A Rust file like tools.rs grows past 500 lines. Use this Skill to extract it into a tools/ directory module step by step, running the test suite after each move so nothing breaks. ## Quick Start Refactor this module by extracting its helper functions into a separate file, running the tests after each step and committing each structural change individually.

Frequently Asked Questions about refactoring

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I refactor code without breaking existing tests?▼

Make one structural change at a time, such as extracting a function or renaming a symbol, then run the full test suite immediately. If any test fails, behavior changed, so revert that step before continuing.

How to split a large file into smaller modules?▼

When a file exceeds roughly 500 lines, extract cohesive groups of functions into a submodule or directory. Move one logical unit per commit and run tests after each move to confirm nothing broke.

When should I not refactor code?▼

Avoid refactoring during feature implementation, when tests are failing, or when you do not understand the code. Finish the feature, fix the tests, or read and document the code first, then refactor.

Should refactoring and feature changes be in the same commit?▼

No. Each refactoring step should be its own commit with a message describing the structural change, not the motivation. Mixing behavior changes with structural changes makes failures hard to isolate and revert.

What should I do before starting a refactoring session?▼

Run the full test suite and confirm everything passes, commit the current state to create a clean revert point, and state the goal in one sentence describing what will become easier after the refactoring.

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