[WalterSear]

What I want are leading commas. Much tidier and one small thing you wouldn't have to edit/think about when adding and removing list items.

[mstade]

Better yet: automatic comma insertion! (I'm only half joking.)

[thekaleb]

Unless you need to add something to the beginning.

[WalterSear]

I prefer comma first notation.

    const hello = {
    , 'one'
    , 'two'
    , 'three
    }

would be easier to visually parse than:

    const hello = {
      'one',
      'two', 
      'three',
    }

Since the commas actually work as a guide.