{
  "context": "This evaluation assesses how well the engineer uses Node.js cryptographic APIs and file system operations to implement a content-addressable storage integrity checker, focusing specifically on proper use of crypto hashing, file I/O patterns, and error handling for storage verification tasks.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "SHA-512 Hash Implementation",
      "description": "Uses Node.js crypto.createHash('sha512') to compute hashes and properly converts to hexadecimal string format using digest('hex')",
      "max_score": 20
    },
    {
      "name": "Path Generation Logic",
      "description": "Correctly implements content-addressable path generation using hash.substring(0, 2) for prefix directory and hash for filename, with conditional '-exec' suffix",
      "max_score": 15
    },
    {
      "name": "File Reading with fs",
      "description": "Uses appropriate Node.js fs methods (fs.readFile, fs.promises.readFile, or fs.readFileSync) to read file contents into Buffer for hash verification",
      "max_score": 15
    },
    {
      "name": "Hash Comparison",
      "description": "Implements proper hash comparison logic to verify file integrity by comparing computed hash against expected hash",
      "max_score": 10
    },
    {
      "name": "Error Handling",
      "description": "Properly handles file not found errors and distinguishes them from other I/O errors when verifying file integrity",
      "max_score": 10
    },
    {
      "name": "Store Directory Traversal",
      "description": "Uses Node.js path module (path.join, path.resolve) to construct full file paths from store directory and relative paths",
      "max_score": 10
    },
    {
      "name": "Async/Promise Usage",
      "description": "Properly implements async functions with Promise handling for file I/O operations, using async/await or Promise chains",
      "max_score": 10
    },
    {
      "name": "Result Aggregation",
      "description": "Correctly categorizes files into valid, corrupted, and missing arrays based on verification results in the store integrity check",
      "max_score": 10
    }
  ]
}