json-cause.txt

{
  "code": "tadka::E0100",
  "severity": "error",
  "message": "failed to compile `Main`",
  "labels": [],
  "help": null,
  "url": null,
  "related": [],
  "causes": [
    { "code": "tadka::E0042", "message": "type mismatch in `foo`" }
  ],
  "truncated": false,
  "cycleOmitted": false
}