{
  "context": "This criteria evaluates how well the engineer uses @babel/helper-get-function-arity to handle edge cases when determining function arity. The focus is on correctly utilizing the package's getFunctionArity function and properly creating test function AST nodes with @babel/types.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Import getFunctionArity",
      "description": "Code correctly imports the default export from @babel/helper-get-function-arity package",
      "max_score": 10
    },
    {
      "name": "Use getFunctionArity function",
      "description": "Implementation calls getFunctionArity() function with a function AST node as the argument",
      "max_score": 15
    },
    {
      "name": "Empty parameter test",
      "description": "Test creates a function with empty params array using @babel/types (e.g., t.functionExpression with params: []) and verifies arity is 0",
      "max_score": 15
    },
    {
      "name": "All optional parameters test",
      "description": "Test creates function with all t.assignmentPattern parameters and verifies arity is 0",
      "max_score": 15
    },
    {
      "name": "Rest parameter only test",
      "description": "Test creates function with only t.restElement parameter and verifies arity is 0",
      "max_score": 15
    },
    {
      "name": "Mixed required and optional test",
      "description": "Test creates function with t.identifier parameters followed by t.assignmentPattern parameters and verifies correct required count",
      "max_score": 15
    },
    {
      "name": "Required plus rest test",
      "description": "Test creates function with t.identifier parameters followed by t.restElement and verifies correct required count",
      "max_score": 15
    }
  ]
}