Sort JS Array based on another arrays positions

gistfile1.js

var positions = ['id1', 'id3', 'id2'];
var data = [{'id' : 'id1'}, {'id': 'id2'}, {'id': 'id3'}];

var sorted = data.sort(function(a, b) {
  var a_pos = positions.indexOf(a.id);
  var b_pos = positions.indexOf(b.id);

  if (a_pos === b_pos)
    return 0;
    
  return (a_pos > b_pos) ? 1 : -1;
});

console.log("sorted", sorted);