Destructuring

const person = {
  name: 'abc', 
  roll: 123, 
  organs: {
    hands: true, 
    belly: {
      bellyButton: true,
    },
  },
}

// const {name, roll:rollNo} = person;

// console.log(name);
// console.log(roll); doesn't work
// console.log(rollNo);

const {organs: {belly: { bellyButton }, ...restOrgans} , ...rest} = person;
// console.log(organs); doesn't work. we destructured it.
console.log(bellyButton);
console.log(rest);
console.log(restOrgans);