Javascript best way to clone an object code example

Example 1: copy object javascript

var x = {key: 'value'}
var y = JSON.parse(JSON.stringify(x))

//this method actually creates a reference-free version of the object, unlike the other methods
//If you do not use Dates, functions, undefined, regExp or Infinity within your object

Example 2: javascript clone object

// syntax: let <newObjectName> = {...<initialObjectName>};

// example: 
const me = {
  name: 'Jakes',
  age: 30,
};
const friend = {...me};
friend.age = 27;
console.log(friend.age); // 27
console.log(me.age); // 30

// -----------------------------
//  BAD
// -----------------------------
const me = {
  name: 'Jonas',
  age: 30,
};
const friend = me;
friend.age = 27;
console.log(friend.age); // 27
console.log(me.age); // 30