Sort Object.entries when some values are undefined

Let's assume that you have the following object:

javascript
let ceos = {

    'elon': {money: 5000000000},
    'jeff': {money: 9000000000},
    'erik': {},
    'bill': {money: 1000000000}

}

You can try to sort the previous object:

javascript
let sorted = Object.entries(ceos).sort((a, b) => b[1].money > a[1].money ? 1 : b[1].money < a[1].money ? -1 : 0);

But the results aren't as you expect:

javascript
// [["jeff", {…}], ["elon", {…}], ["erik", {…}], ["bill", {…}]]

The reason is that there are undefined values in the object. Specifically, my money is undefined. 😎

If a value is undefined, the sort function will return 0, and you don't want to return 0 in each case. For example, if the function is comparing my money to the one of Elon, I expect the function to return 1.

How to solve it

Add an initial value to undefined fields:

javascript
let sorted = Object.entries(ceos).sort((a, b) => {

    let first  = a[1].money || 0;
    let second = b[1].money || 0;
    
    return second > first ? 1 : second < first ? -1 : 0
    
});

Here are the results:

javascript
// [["jeff", {…}], ["elon", {…}], ["bill", {…}], ["erik", {…}]]

Now, I'm at the end of the queue, but you never know where life will take you.