Learn Adapter, Decorator, and Facade patterns. Structural patterns compose objects into larger structures while keeping interfaces clean.

• Adapter
• Decorator
• Facade patterns

class LegacyPaymentAPI {
  processPayment(amount) { return { success: true, amount }; }
}

class ModernPaymentAdapter {
  constructor(legacyAPI) { this.legacyAPI = legacyAPI; }
// ...

• Adapter pattern works
• Decorator pattern works

• Adapter: translate between two incompatible interfaces
• Decorator: wrap object to add behavior without modifying original
• Facade: provide simplified interface to complex subsystem

Learn Adapter, Decorator, and Facade patterns. Structural patterns compose objects into larger structures while keeping interfaces clean.

• Adapter
• Decorator
• Facade patterns

class LegacyPaymentAPI {
  processPayment(amount) { return { success: true, amount }; }
}

class ModernPaymentAdapter {
  constructor(legacyAPI) { this.legacyAPI = legacyAPI; }
// ...

• Adapter pattern works
• Decorator pattern works

• Adapter: translate between two incompatible interfaces
• Decorator: wrap object to add behavior without modifying original
• Facade: provide simplified interface to complex subsystem