[devote]

'use strict';

const __PROP = Symbol();

class Foo {
  constructor() {
    Object.getOwnPropertyNames(this.__proto__).forEach((key) => {
      var descriptor = Object.getOwnPropertyDescriptor(this.__proto__, key);
      if (descriptor && (typeof descriptor.get === "function" || typeof descriptor.set === "function")) {
        descriptor.enumerable = true;
        Object.defineProperty(this, key, descriptor);
      }
    });



    this.prop = 1;
  }

  get prop() {
    return this[__PROP];
  }

  set prop(value) {
    this[__PROP] = value;
  }
}

let bar = new Foo();

console.log(bar.prop); // 1
console.log(Object.keys(bar)); // ["prop"]