{0, number, ::}
---
{}
---
{
  "val": null,
  "err": {
    "kind": 7,
    "message": "{0, number, ::}",
    "location": {
      "start": {
        "offset": 12,
        "line": 1,
        "column": 13
      },
      "end": {
        "offset": 14,
        "line": 1,
        "column": 15
      }
    }
  }
}