Replace abbreviate object form with line breaking

[mhvsa]

Related with #3165

Previously

{ a: 2, o: { a, b, c, d, e, f, g, asd, asda, x } }

After

{
 a: 2,
 o: {
  a: "1",
  b: "2",
  c: "3",
  d: "4",
  e: "5",
  f: "6",
  g: 10,
  asd: 2,
  asda: 3,
  x: { a: "asd", x: 3 }
 }
}

Node.js

{
  a: 2,
  o: {
    a: '1',
    b: '2',
    c: '3',
    d: '4',
    e: '5',
    f: '6',
    g: 10,
    asd: 2,
    asda: 3,
    x: { a: 'asd', x: 3 }
  }
}

[hayd]

Can you add a test case?

[mhvsa]

@hayd sure

[ry]

LGTM - thanks for giving the stringify code some love @mhvsa !