{
  "graph": null,
  "err": {
    "ioerr": null,
    "errs": [
      {
        "range": "d2/testdata/d2compiler/TestCompile/blank_underscore.d2,2:2:11-2:3:12",
        "errmsg": "d2/testdata/d2compiler/TestCompile/blank_underscore.d2:3:3: invalid use of parent \"_\""
      }
    ]
  }
}