{
  "context": "This criteria evaluates how well the engineer uses @babel/helper-get-function-arity and related Babel packages to analyze function parameter patterns, specifically focusing on the complex parameter pattern handling capability of determining required versus optional parameters.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Uses @babel/parser",
      "description": "Correctly uses @babel/parser to parse the function code string into an AST. Should call parse() or parseExpression() with appropriate options.",
      "max_score": 15
    },
    {
      "name": "Uses getFunctionArity",
      "description": "Imports and uses the default export from @babel/helper-get-function-arity (often named getFunctionArity or similar) to determine the required parameter count. This is the core package function being evaluated.",
      "max_score": 30
    },
    {
      "name": "Extracts function node",
      "description": "Correctly extracts the function node from the parsed AST. Handles different function types (FunctionDeclaration, FunctionExpression, ArrowFunctionExpression) or uses appropriate traversal to locate the function.",
      "max_score": 10
    },
    {
      "name": "Passes to getFunctionArity",
      "description": "Correctly passes the function AST node to getFunctionArity() and uses the returned arity value as the requiredCount in the output.",
      "max_score": 20
    },
    {
      "name": "Uses @babel/types checks",
      "description": "Uses type checking functions from @babel/types to identify parameter patterns (e.g., isIdentifier, isObjectPattern, isArrayPattern, isRestElement, isAssignmentPattern) for building the patterns array.",
      "max_score": 15
    },
    {
      "name": "Detects rest parameters",
      "description": "Uses @babel/types isRestElement() to detect rest parameters and correctly sets the hasRest boolean in the output.",
      "max_score": 10
    }
  ]
}