JavaScript: Object.getOwnPropertyDescriptors

New in JS2017.

Object.getOwnPropertyDescriptors(obj)

Return Property Descriptor of all own properties of a object. The return value is a object, has this form { k1: descriptor1, k2: descriptor2, etc }.

If obj is not a object, it is first converted to a object type.

// object with a string key and symbol key
const jj = {
  "p": 3,
  [Symbol()]: 4,
};

console.log(
  Object.getOwnPropertyDescriptors(jj),
);

/* [
{
  p: { value: 3, writable: true, enumerable: true, configurable: true },
  [Symbol()]: { value: 4, writable: true, enumerable: true, configurable: true }
}

] */

// If obj is not a object, it is first converted to a object type
console.log(Object.getOwnPropertyDescriptors(3));
// {}