{
  "context": "This criteria evaluates how well the engineer uses the shebang-regex package to safely handle both matching and non-matching strings, focusing on proper null safety patterns when accessing regex execution results.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Uses shebang-regex package",
      "description": "Solution imports and uses the shebang-regex package rather than implementing a custom regex",
      "max_score": 15
    },
    {
      "name": "Uses exec() method",
      "description": "Solution uses the shebangRegex.exec() method to extract shebang information from strings",
      "max_score": 20
    },
    {
      "name": "Accesses capture group",
      "description": "Solution correctly accesses the capture group at index [1] from exec() results to extract the interpreter path without the #! prefix",
      "max_score": 20
    },
    {
      "name": "Null safety pattern",
      "description": "Solution implements proper null safety when accessing exec() results, using optional chaining (?.), nullish coalescing (??), or explicit null checks to handle non-matching strings",
      "max_score": 30
    },
    {
      "name": "Uses test() method",
      "description": "Solution uses the shebangRegex.test() method to determine if a shebang exists (hasShebang field)",
      "max_score": 15
    }
  ]
}