{
  "name": "invalid/headers-and-columns",
  "why": "§4: headers with columns[] throws \"82excel: use either headers or columns[]\"",
  "rules": {
    "headers": [
      "a"
    ],
    "columns": [
      {
        "key": "v"
      }
    ]
  },
  "rows": [
    {
      "v": "x"
    }
  ],
  "expect": {
    "throws": "use either headers or columns[]"
  }
}