Sort an array after removing duplicate element using javascript

const number = [1, 5, 1, 3, 4, 6, 5, 3, 8, 9, 7];
let uniqueNumber = [... new Set(number)].sort((a, b)=>{ return a-b });


console.log(number);
console.log(uniqueNumber);

// output : [1, 3, 4, 5, 6, 7, 8, 9 ]