{
  "context": "This criteria evaluates how well the engineer uses the escape-string-regexp package to implement type-safe pattern creation. It focuses on proper input validation with TypeError throwing and correct usage of the package's escaping functionality.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Type validation implementation",
      "description": "Checks if the input is a string using typeof or similar mechanism before processing. This validation should occur before calling the escape-string-regexp function.",
      "max_score": 25
    },
    {
      "name": "TypeError for invalid inputs",
      "description": "Throws a TypeError (not just Error) when the input is not a string (null, undefined, number, object, etc.). The error type must specifically be TypeError to match the package's behavior.",
      "max_score": 25
    },
    {
      "name": "Using escape-string-regexp",
      "description": "Imports and calls the escape-string-regexp package (or escapeStringRegexp function) to escape special regex characters. Must actually use the package rather than implementing custom escaping logic.",
      "max_score": 30
    },
    {
      "name": "Correct return value",
      "description": "Returns the escaped string from escape-string-regexp directly without unnecessary modifications. The return value should be the result of calling the escape-string-regexp function on the validated input.",
      "max_score": 20
    }
  ]
}