name    = Ada
age     = 36
langs   = ["Lumen", "Rust"]
active  = true
manager = nil
compact = {"name":"Ada","age":37,"langs":["Lumen","Rust","Zig"],"active":true,"manager":null}
pretty  =
{
  "name": "Ada",
  "age": 37,
  "langs": [
    "Lumen",
    "Rust",
    "Zig"
  ],
  "active": true,
  "manager": null
}
round-trip cols = 2
round-trip grid = [[1, 2], [3, 4]]
