SOLID Principles in JavaScript

What SOLID principle is violated when an interface forces its clients to implement methods they don't need?

interface SmartDevice {
  turnOn(): void;
  turnOff(): void;
  connect(): void;
  disconnect(): void;
  play(): void;
  pause(): void;
  adjustVolume(level: number): void;
  setBrightness(level: number): void;
}

class SmartLight implements SmartDevice {
  // Must implement all methods, even though a light
  // doesn't need play(), pause(), or adjustVolume()
}

Single Responsibility Principle
Open/Closed Principle
Interface Segregation Principle
This code violates the Interface Segregation Principle (ISP). The SmartDevice interface forces implementing classes to provide methods that may not be relevant to them. A better design would be to split this into smaller, more focused interfaces like PowerControl, NetworkConnection, MediaControl, and DisplayControl, allowing devices to implement only the interfaces that make sense for their functionality.
Dependency Inversion Principle

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