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◈ Part 1/3 in React Patterns That Scale

React Component Patterns: Composition

// Building flexible components with composition patterns.

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The Problem with Props

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// Too many props
<Card
  title="Hello"
  subtitle="World"
  icon={<Icon />}
  footer={<Footer />}
  headerAction={<Button />}
/>

Compound Components

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Implementation

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function Card({ children }) {
  return <div className="card">{children}</div>;
}

Card.Header = function CardHeader({ children }) {
  return <div className="card-header">{children}</div>;
};

Card.Body = function CardBody({ children }) {
  return <div className="card-body">{children}</div>;
};

Usage

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<Card>
  <Card.Header>Title</Card.Header>
  <Card.Body>Content</Card.Body>
</Card>

Benefits

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  • Flexible API
  • Clear hierarchy
  • Easy to extend

Conclusion

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→ Next in series

Part 2: Testing React Components with Vitest