let buf1 = Buffer.from('b');
let buf2 = Buffer.from('c');
let buf3 = Buffer.from('a');
let arr = [buf1, buf2, buf3];
//The array before sorting:
console.log(arr);
//Sort the array:
console.log(arr.sort(Buffer.compare));
[ <Buffer 62>, <Buffer 63>, <Buffer 61> ] [ <Buffer 61>, <Buffer 62>, <Buffer 63> ]