My name is {0, foo}
---
{}
---
{
  "val": null,
  "err": {
    "kind": 5,
    "message": "My name is {0, foo}",
    "location": {
      "start": {
        "offset": 15,
        "line": 1,
        "column": 16
      },
      "end": {
        "offset": 18,
        "line": 1,
        "column": 19
      }
    }
  }
}