const options = { indent_size: 2, space_in_empty_paren: true }

const dataObj = {completed: false,id: 1,title: "delectus aut autem",userId: 1,}

const dataJson = JSON.stringify(dataObj)

js_beautify(dataJson, options)

/* OUTPUT
{
  "completed": false,
  "id": 1,
  "title": "delectus aut autem",
  "userId": 1,
}
*/