02_getOwnPropertyDescriptors.js

// Base object with properties, get and set:
const person = {
  name: 'Max',
  age: 30,
  set personName(name) {
    this.name = name;
  },
  get password() {
    return `${this.name}${this.age}`;
  },
};

console.log(person); // {name: "Max", age: 30}
console.log(person.password); // "Max30"


// Get property descriptors:
console.log(Object.getOwnPropertyDescriptors(person));
/*
  age: {value: 30, writable: true, enumerable: true, configurable: true}
  name: {value: "Max", writable: true, enumerable: true, configurable: true}
  password: {get: ƒ, set: undefined, enumerable: true, configurable: true}
  personName: {get: undefined, set: ƒ, enumerable: true, configurable: true}
*/


// Clone object:
// Using assign()
const admin = Object.assign({}, person);
// Using destructuring
const admin = { ...person };

console.log(admin); // {name: "Max", age: 30, personName: undefined, password: "Max30"}

console.log(Object.getOwnPropertyDescriptors(admin));
/*
  age: {value: 30, writable: true, enumerable: true, configurable: true}
  name: {value: "Max", writable: true, enumerable: true, configurable: true}
  password: {value: "Max30", writable: true, enumerable: true, configurable: true}
  personName: {value: undefined, writable: true, enumerable: true, configurable: true}
*/


// Clone object:
// Using .getOwnPropertyDescriptors()
const superAdmin = Object.defineProperties({}, Object.getOwnPropertyDescriptors(person));

console.log(Object.getOwnPropertyDescriptors(superAdmin));
/*
  age: {value: 30, writable: true, enumerable: true, configurable: true}
  name: {value: "Max", writable: true, enumerable: true, configurable: true}
  password: {get: ƒ, set: undefined, enumerable: true, configurable: true}
  personName: {get: undefined, set: ƒ, enumerable: true, configurable: true}
*/