Short quick sort function

quickSort.js

function quickSort(arr) {
    if (arr.length <= 1) return arr;
    const pivot = arr[arr.length - 1];
    const left = arr.filter(el => el < pivot);
    const right = arr.filter(el => el >= pivot).slice(0, -1);
    return [...quickSort(left), pivot, ...quickSort(right)];
}

/* Usage */
const array = [3, 5, 6, 9, 8, 1, 2, 7, 4, 10];
console.log(quickSort(array)); // Output: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]