React
React State Boundaries
How to keep UI state scoped, predictable, and easy to test.
6/20/2026reactstateui
React State Boundaries
State should live close to the workflow that owns it.
Guidelines
- Keep form state inside the form component.
- Lift state only when multiple components need it.
- Avoid duplicating server data in many places.
- Derive display values instead of storing them separately.
Testing Note
Stable data-testid attributes can make important workflows easier to verify without coupling tests to visual text.