减少TypeScript中的接口

type Person = {
  name: string;
  age: number;
};

function greet(person: Person) {
  console.log(`Hello, ${person.name}!`);
}

interface Printable {
  print(): void;
}

interface Loggable {
  log(): void;
}

type Logger = Printable & Loggable;

function logMessage(logger: Logger, message: string) {
  logger.print();
  logger.log();
  console.log(message);
}

class Person {
  constructor(public name: string, public age: number) {}

  greet() {
    console.log(`Hello, ${this.name}!`);
  }
}

function sayHello(person: Person) {
  person.greet();
}

interface Car {
  brand: string;
  model: string;
  year?: number; // 可选属性
  readonly price: number; // 只读属性
}

function displayCar(car: Car) {
  console.log(`Brand: ${car.brand}`);
  console.log(`Model: ${car.model}`);
  console.log(`Year: ${car.year}`);
  console.log(`Price: ${car.price}`);
}