{
  "context": "Evaluates whether the solution relies on the base64url package to transform base64url tokens into padded base64 strings, including collection handling and invalid-token detection. Checks focus solely on correct use of the package API for conversions rather than reimplementing padding or alphabet swaps.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Package import",
      "description": "Imports the base64url package and uses its provided API instead of custom conversion helpers.",
      "max_score": 15
    },
    {
      "name": "toBase64 conversion",
      "description": "Converts individual tokens by calling base64url.toBase64 (or the equivalent method on the default export) so the library handles alphabet mapping and padding, with no manual string replacement.",
      "max_score": 45
    },
    {
      "name": "Batch reuse",
      "description": "Normalizes collections by routing every token through base64url.toBase64 (after any required trimming) rather than duplicating padding or character replacement logic.",
      "max_score": 25
    },
    {
      "name": "Error surfacing",
      "description": "Invalid-token detection relies on base64url conversion/decoding behavior (e.g., letting toBase64 or decode throw) and reports errors that include the offending token value.",
      "max_score": 15
    }
  ]
}