General Principles in React 19

Following solid architectural principles ensures your React 19 projects are maintainable, scalable, and easy to understand.

Separation of Concerns

• Keep UI, business logic, and data management separate.
• Use components for UI, hooks for logic, and context/store for state.

Modularity

• Break down features into small, reusable components.
• Use custom hooks for shared logic (e.g., useAuth, useFetch).
• Organize code by feature or domain when possible.

Reusability

• Create generic components and hooks for common patterns.
• Use props and children for flexible component APIs.

Maintainability

• Write clear, self-documenting code.
• Use TypeScript for type safety and better tooling.
• Keep dependencies up to date and remove unused code.

Scalability

• Use feature modules or domain-driven structure for large apps.
• Apply lazy loading and code splitting for performance.

Example: Feature-Based Structure

src/
  features/
    auth/
      AuthPage.jsx
      useAuth.js
    dashboard/
      DashboardPage.jsx
      useDashboard.js
  components/
  hooks/
  store/

References

• React Docs: Best Practices
• React Enterprise Boilerplate