{
  "context": "This criteria evaluates how well the engineer uses istanbul-lib-source-maps' MappedCoverage class to accumulate coverage entries with automatic deduplication and hit count summation. The focus is on proper use of the addStatement, addFunction, and addBranch methods.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "MappedCoverage instantiation",
      "description": "Creates a MappedCoverage instance (imported from istanbul-lib-source-maps/lib/mapped) with the file path to serve as the accumulation container",
      "max_score": 25
    },
    {
      "name": "Statement accumulation",
      "description": "Uses the addStatement(loc, hits) method to add each statement entry, which automatically deduplicates by location and sums hit counts",
      "max_score": 25
    },
    {
      "name": "Function accumulation",
      "description": "Uses the addFunction(name, decl, loc, hits) method to add each function entry, which automatically deduplicates by declaration and body location",
      "max_score": 25
    },
    {
      "name": "Branch accumulation",
      "description": "Uses the addBranch(type, loc, locations, hits) method to add each branch entry, which automatically deduplicates and accumulates hit arrays",
      "max_score": 25
    }
  ]
}