{
  "context": "Evaluates how effectively the solution leverages the base64url package to decode URL-safe payloads into text. Focuses on selecting the right decode API, passing encoding options, and surfacing errors from malformed tokens as described in the spec.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Decode via package",
      "description": "Base64url strings are converted to text using the base64url.decode(...) API or the callable default export rather than manual Buffer/base64 logic.",
      "max_score": 30
    },
    {
      "name": "Encoding option",
      "description": "The implementation passes the encoding argument supported by base64url.decode(base64url, encoding?) to return non-UTF-8 text (e.g., latin1) instead of re-encoding manually.",
      "max_score": 25
    },
    {
      "name": "URL alphabet handling",
      "description": "Decoding relies on base64url's built-in handling of URL-safe characters and padding (e.g., using decode or toBuffer) rather than custom character substitution.",
      "max_score": 20
    },
    {
      "name": "Invalid token errors",
      "description": "Malformed or non-base64url input is detected via base64url decoding (decode or toBuffer) and surfaced as an error, instead of being silently accepted or sanitized manually.",
      "max_score": 25
    }
  ]
}