Typescript:有没有办法在一个类中定义对象的形状？

interface Person {
  name: string;
  age: number;
}

class Student implements Person {
  name: string;
  age: number;
  grade: number;

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

const student1: Person = new Student("Alice", 18, 12);
console.log(student1.name);  // 输出：Alice
console.log(student1.age);   // 输出：18