{
  "context": "Evaluates whether the solution leverages @backstage/errors guards to validate and normalize unknown error values as described in the spec. Confirms the code relies on the library instead of reimplementing shape checks by hand.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Use isError",
      "description": "Uses @backstage/errors isError to detect existing Error instances or error-shaped values before returning or collecting them, instead of manual property checks.",
      "max_score": 25
    },
    {
      "name": "Assert invalid",
      "description": "Employs assertError from @backstage/errors when enforcing the presence of non-empty name/message fields in ensureError, producing a TypeError for invalid inputs.",
      "max_score": 30
    },
    {
      "name": "Shape to Error",
      "description": "When given plain objects with name/message strings, converts them into real Error objects while keeping the provided name and message, driven by the package guards rather than ad-hoc checks.",
      "max_score": 20
    },
    {
      "name": "Skip non-errors",
      "description": "collectErrors relies on isError (or an assertError gate) to omit or reject non-error values from mixed arrays without misclassifying primitives or objects lacking the required shape.",
      "max_score": 25
    }
  ]
}