如何在java script中找出类的全部功能

class MyClass {
  constructor() {
    // constructor code
  }

  method1() {
    // method1 code
  }

  method2() {
    // method2 code
  }
}

const myClassPrototype = Object.getPrototypeOf(new MyClass());
const classFunctionality = Object.getOwnPropertyNames(myClassPrototype);
console.log(classFunctionality);

class MyClass {
  constructor() {
    // constructor code
  }

  method1() {
    // method1 code
  }

  method2() {
    // method2 code
  }
}

const myClassPrototype = Object.getPrototypeOf(new MyClass());
const classFunctionalityDescriptors = Object.getOwnPropertyDescriptors(myClassPrototype);
console.log(classFunctionalityDescriptors);

{
  constructor: {
    value: [Function: constructor],
    writable: true,
    enumerable: false,
    configurable: true
  },
  method1: {
    value: [Function: method1],
    writable: true,
    enumerable: false,
    configurable: true
  },
  method2: {
    value: [Function: method2],
    writable: true,
    enumerable: false,
    configurable: true
  }
}