prettier/tests/comments/variable_declarator.js

let obj = // Comment
{
  key: 'val'
}

let obj // Comment
= {
  key: 'val'
}

let obj = { // Comment
  key: 'val'
}

let obj = {
  // Comment
  key: 'val'
}

let obj = // Comment
[
  'val'
]

let obj // Comment
= [
  'val'
]

let obj = [ // Comment
  'val'
]

let obj = [
  // Comment
  'val'
]