Custom Sorting

 const order = {

  n: 100,
  a: 200,
  u: 300,
};

var myArray = [
  {
    name: "u",
  },
  {
    name: "n",
  },
  {
    name: "a",
  },
  {
    name: "n",
  },
];
myArray.sort((a, b) => order[a.name] - order[b.name]);

console.log(myArray);

 const order = {

  n: 100,
  a: 200,
  u: 300,
};

var myArray = [
  {
    name: "u",
  },
  {
    name: "n",
  },
  {
    name: "a",
  },
  {
    name: "n",
  },
];
myArray.sort((a, b) => order[a.name] - order[b.name]);

console.log(myArray);

 const order = {

  n: 100,
  a: 200,
  u: 300,
};

var myArray = [
  {
    name: "u",
  },
  {
    name: "n",
  },
  {
    name: "a",
  },
  {
    name: "n",
  },
];
myArray.sort((a, b) => order[a.name] - order[b.name]);

console.log(myArray);