refactoring-safely

Refactor code incrementally with test-backed verification after each change.

Updated Aug 20, 2025
One-click install
npx skills add https://github.com/BRANDNEWSHVT/mercora --skill refactoring-safely-brandnewshvt
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: refactoring-safely
Source: https://github.com/BRANDNEWSHVT/mercora/tree/main/storefront-nuxt/.agents/skills/refactoring-safely
Command: npx skills add https://github.com/BRANDNEWSHVT/mercora --skill refactoring-safely-brandnewshvt

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Refactoring changes structure without changing behavior. If behavior changes, it's not refactoring — it's rewriting. This guide supports a test-backed approach to ensure behavior remains stable during restructuring.

Core Features & Use Cases

  • Baseline-driven: require a green test suite before, during, and after changes.
  • Incremental steps: break refactors into small, verifiable steps (rename, extract, move).
  • Safety-first rules: separate commits for refactors and feature work; ensure tests cover changes.

Quick Start

Start by running the test suite to establish baseline, then perform the smallest safe refactoring step and verify tests after each change.

Frequently Asked Questions about refactoring-safely

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

FAQPage Schema
How do I safely refactor code without changing its behavior?

To safely refactor code without changing behavior, establish a green test baseline first, then apply incremental changes like renames or extractions while verifying tests after each small step.

Why do my tests break when I try to refactor my codebase?

Tests break during refactoring when changes alter behavior instead of structure. Separate refactor commits from feature work and ensure tests cover the changes to maintain a stable behavioral baseline.

What's the best way to handle incremental code refactoring in version control?

The best way to handle incremental refactoring in version control is to perform one small verifiable step per commit, keeping refactors separate from feature work to ensure behavior remains stable.

Do I need a passing test suite before starting a code refactoring?

Yes, you need a passing test suite before refactoring. A green test baseline is required to validate that behavior remains stable before, during, and after structural changes.

Can I mix feature development with structural refactoring in the same commit?

No, you should not mix refactoring with feature work in the same commit. Safety-first rules require separate commits for refactors and feature development to preserve verifiable behavior.