在TypeScript中访问基本接口内的扩展接口

interface BasicInterface {
  // 基本接口的属性和方法
  name: string;
  age: number;
  sayHello(): void;
}

interface ExtendedInterface extends BasicInterface {
  // 扩展接口的属性和方法
  gender: string;
  sayGoodbye(): void;
}

class MyClass implements ExtendedInterface {
  name: string;
  age: number;
  gender: string;

  constructor(name: string, age: number, gender: string) {
    this.name = name;
    this.age = age;
    this.gender = gender;
  }

  sayHello(): void {
    console.log(`Hello, my name is ${this.name}.`);
  }

  sayGoodbye(): void {
    console.log(`Goodbye, ${this.name}!`);
  }
}

const myObject = new MyClass("John", 25, "Male");
myObject.sayHello(); // 输出：Hello, my name is John.
myObject.sayGoodbye(); // 输出：Goodbye, John!