const array = [1, 2, 3];
const [x, ...pl1] = array;
console.log(x); //1
console.log(pl1); //[2, 3]

const obj = { 
  name: 'Name1',
  age: 23,
  userName: 'User1',
};
const {name, ...pl2} = obj;
console.log(name); //"Name1"
console.log(pl2); //const obj = {age: 23, userName: 'User1'};