const users = [
{ name: "user1", age: 28 },
{ name: "user2", age: 21 },
{ name: "user3", age: 38 },
{ name: "user4", age: 18 }
];
users.sort((user1, user2) => user2.age - user1.age);
console.log(users);
[ { name: "user3", age: 38 }, { name: "user1", age: 28 }, { name: "user2", age: 21 }, { name: "user4", age: 18 } ]