immutable-transform-correct-example.js

function Transform(obj) {
  let item = DeepCopy(obj)
  try {
    item.name = "Orange";
    item.price = obj.price/0;
    return item;
  } catch (e) {
    // ...
  }
}

const apple = { name: "Apple", price: 2 }
const orange = Transform(apple);