That's correct, but you can use a trailing comma if you prefer uniform lists:

  [
    a,
    b,
    c,
  ]

I simply prefer :

[ a

, b

, c

]

because, I think this is as 'uniform" as it gets. All syntactic separators are in the first column. Thus they are all uniformly in the same column. Line 1 has the syntactic separator '[' which means start-of-array. Lines 2 and 3 have ',' as the syntactic separator which means element-separator. And line 4 has the final syntactic marker which means "end of Array".

All elements of the array start at the same column, uniformly. And all syntactic separators are in the same column also uniformly.

What a stupid design. If the consortium had just one member having the competence of knowing some competing design and using his brain for five minutes, this disaster could have been avoided.

https://news.ycombinator.com/item?id=9624429

Well, JavaScript is pretty much a lost cause anyway.