{
  "context": "This criteria evaluates how well the engineer uses istanbul-lib-source-maps package capabilities for debug logging and error handling when building a coverage diagnostic tool. The focus is on proper usage of source map registration, retrieval, validation, and graceful error handling mechanisms.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "MapStore Creation",
      "description": "Uses createSourceMapStore() function to initialize a MapStore instance, optionally with verbose logging configuration",
      "max_score": 15
    },
    {
      "name": "Source Map Registration",
      "description": "Correctly uses mapStore.registerURL() or mapStore.registerMap() methods to register source maps for files, handling both URL strings and source map objects",
      "max_score": 20
    },
    {
      "name": "Source Map Retrieval",
      "description": "Uses mapStore.getSourceMapSync() to retrieve registered source maps for validation or diagnostic purposes",
      "max_score": 15
    },
    {
      "name": "Data URL Handling",
      "description": "Properly handles inline source maps with data: URL format, including base64-encoded source maps",
      "max_score": 10
    },
    {
      "name": "Source Map Validation",
      "description": "Validates source map objects for required properties (version, sources, mappings) using the package's validation capabilities or by checking retrieved source maps",
      "max_score": 15
    },
    {
      "name": "Graceful Error Handling",
      "description": "Implements error handling that catches and logs failures without throwing exceptions, following the package's silent failure design pattern",
      "max_score": 15
    },
    {
      "name": "Verbose Logging",
      "description": "Implements conditional verbose logging based on configuration, following the pattern used by the package's DEBUG environment variable support",
      "max_score": 10
    }
  ]
}