react-refactor

Refactor large React components by surgically extracting hooks and migrating useState to useReducer to consolidate state. This behavior-preserving approach separates structural reorganization from logic changes, ensuring a zero-diff upgrade path for existing TypeScript components.

Migrate useState calls to useReducer when a React component accumulates many state variables and exceeds a few hundred lines. Consolidating state into a single useReducer structure with stable setters reduces complexity and improves reusability without altering existing call patterns.

Extract custom hooks by grouping related logic, state, handlers, and effects from large React components. This reduces component complexity and improves reusability while delivering a drop-in hook-based pattern that preserves the original UI behavior.

Yes, this refactoring approach applies specifically to TypeScript and React 19 projects. It targets large components with many useState usages, providing migration guidance and a drop-in API to ensure zero-diff upgrades in TypeScript environments.

Avoid improving logic during hook extraction because combining refactoring and feature changes creates bugs that are hard to bisect. The process requires identifying extractable logic, extracting it with zero behavioral change, then verifying separately.

Restructuring JSX layouts in large React components improves readability and reduces re-renders without altering UI behavior. This surgical refactoring approach focuses on layout reorganization while maintaining a zero-diff upgrade path for existing components.