Refactoring Guidelines
Refactor in tiny steps: extract components/hooks, slim props, remove dead code, and keep tests green at each checkpoint.
Refactoring Guidelines is a free React Academy lesson on CoddyKit — lesson 3 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the React Academy learning path, one of 3 lessons in the course, and your progress syncs across the web and the CoddyKit app.
What refactoring means
Goal: Change structure, not behavior.
- Work in small steps
- Extract components/hooks
- Slim noisy props
- Remove dead code
Safe habits
- Keep output identical after each step
- Prefer extraction over big rewrites
- Rename/move with IDE help
- Run tests (or manual checks) often
Extract component
Before: repeated markup. After: extracted ProductRow reduces duplication.
<div id="root"></div>Extract hook
Move logic to useCart; UI becomes simpler and reusable.
<div id="root"></div>Slim props via config
Slim props: pass one config object instead of many loose props.
<div id="root"></div>Tips & checklist
- Refactor in tiny steps; verify UI after each
- Extract components/hooks to reduce duplication
- Slim props with grouped config
- Delete dead code after confirming no references
Refactor basics check
Recap
Recap: Keep behavior identical while improving structure. Extract small pieces, slim props, remove dead code, and verify at each step.
Frequently asked questions
Is the “Refactoring Guidelines” lesson free?
Yes — the full text of “Refactoring Guidelines” is free to read here on the web, and the React Academy course includes 3 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the React Academy course, upgrade to CoddyKit PRO.
What will I learn in “Refactoring Guidelines”?
Refactor in tiny steps: extract components/hooks, slim props, remove dead code, and keep tests green at each checkpoint. You practise React Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start React Academy?
No prior experience is required. React Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 3 of 3, so you can start here or from the beginning and move at your own pace.
How long does the “Refactoring Guidelines” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this React Academy lesson?
Yes. Every React Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Feature Folders & UI vs Composite Components
- Hooks Folder Conventions & Test Co-location
- Refactoring Guidelines