applying-frontend-patterns

Container/presentational separation isolates state management and side effects (container) from UI rendering (presentational). Containers handle logic, data fetching, and state; presentational components receive props and render UI. This pattern improves reusability, testability, and maintainability across React applications.

Custom hooks extract stateful logic into reusable functions prefixed with 'use-'. Design them to handle specific concerns—data fetching, form state, animations—accepting configuration parameters and returning state and handlers. Follow naming conventions and compose multiple hooks to build complex, shareable functionality.

Yes. Container/presentational separation, custom hooks (composition API in Vue, services in Angular), and state management patterns are framework-agnostic design principles. The guidance adapts these patterns to Vue's composition API, Angular's services and components, and React's hooks ecosystem.

Refactoring for logic/UI separation involves extracting business logic into containers or custom hooks, moving side effects out of presentational components, and applying composition principles. Review existing components against container/presentational roles, Law of Demeter, and YAGNI to identify separation opportunities.

Composition patterns integrate with state management by using custom hooks to encapsulate state, derived values, and handlers. Pass state through props or context; compose multiple hooks to manage different concerns. This approach avoids prop drilling and keeps components focused on single responsibilities.

Presentational components suit scenarios requiring reusable, stateless UI—buttons, cards, forms. Use them when the component receives all data via props and has no side effects. Container patterns wrap presentational components to inject state, logic, and effects; choose based on the component's role in your architecture.