{
  "context": "Evaluates whether the solution leverages temporal-polyfill's formatting APIs to produce ISO-safe strings, JSON-safe representations, and locale-aware displays for Temporal values and ranges. Scoring focuses solely on correct use of Temporal string/JSON methods and Intl-based locale formatting across single values and ranges, including fallback handling for date-only/time-only inputs.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "ISO fidelity",
      "description": "Uses Temporal object methods such as Temporal.Instant.toString(), Temporal.ZonedDateTime.toString(), Temporal.PlainDate.toString(), and Temporal.PlainTime.toString() (or implicit stringification) to populate iso fields, preserving offsets and calendar data without manual string assembly.",
      "max_score": 25
    },
    {
      "name": "JSON output",
      "description": "Derives json fields via Temporal toJSON behavior (e.g., Instant/PlainDate/PlainTime/ZonedDateTime.toJSON() or JSON.stringify on those objects) rather than custom serializers, ensuring results match the package's canonical ISO strings.",
      "max_score": 20
    },
    {
      "name": "Locale formatting",
      "description": "Generates localized strings for single values using Temporal-aware Intl.DateTimeFormat or Temporal.toLocaleString with provided locale/timeZone/display options (including fallback zones for date-only/time-only inputs), demonstrating that Temporal objects are passed directly into the formatter instead of manually formatted strings.",
      "max_score": 25
    },
    {
      "name": "Range formatting",
      "description": "Produces localizedRange output by calling Intl.DateTimeFormat.prototype.formatRange (or equivalent Temporal-aware range API) on start/end Temporal objects such as ZonedDateTime or Instant while preserving input order and honoring supplied locale/timeZone options.",
      "max_score": 30
    }
  ]
}