Reposting microsoft/vscode#1661

There's a very annoying issue when hitting "format code" in a TS file. Here's an example:

[{
}, {
}]
// or
fn({
}, {
})

becomes:

[{
}, {
  }]
// or
fn({
}, {
  })

This gets really annoying when you have large nested objects containing things like functions etc...