What is the Smart vs Dumb Component pattern and why is it used?

Quick Answer Smart components: connect to services, dispatch NgRx actions, manage state. Dumb/Presentational components: pure input/output, no service dependencies, easily testable, reusable anywhere. Why it matters: dumb components with OnPush change detection are extremely performant and testable. Smart components handle the complexity in one place. Pattern prevents spaghetti data flow in large apps.

Answer

Smart Components handle data loading, business logic, and state management.

Dumb Components only display UI, receive input, and emit events.

This pattern increases reusability, makes components more testable, and keeps UI clean and maintainable.

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What is the Smart vs Dumb Component pattern and why is it used?

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