{
  "context": "Tests whether the agent correctly follows the V8 JIT profiling workflow: using --trace-opt and --trace-deopt with the required checkpoint before profiling, generating a CPU profile with --prof and processing it with --prof-process, and then applying V8-aware fixes (consistent object shapes, no delete, rest parameters) to the identified hot functions.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "trace-opt/trace-deopt flags",
      "description": "The profiling script or workflow uses both `--trace-opt` and `--trace-deopt` flags together when running node",
      "max_score": 12
    },
    {
      "name": "Checkpoint before profiling",
      "description": "The agent explicitly documents or implements the checkpoint step: confirming no unexpected deoptimization warnings before proceeding to CPU profiling (e.g., a comment, section in diagnostic.md, or conditional in the script that checks deopt output before running --prof)",
      "max_score": 14
    },
    {
      "name": "--prof flag used",
      "description": "The workflow uses `node --prof` to generate an isolate-*.log tick profile file",
      "max_score": 8
    },
    {
      "name": "--prof-process output",
      "description": "The workflow runs `node --prof-process` on the isolate-*.log file and saves the result (e.g., to processed.txt or similar)",
      "max_score": 10
    },
    {
      "name": "Consistent property order fix",
      "description": "The fixed script initializes all properties in a consistent order across all code paths (no conditional property-addition that changes order between objects of the same type)",
      "max_score": 10
    },
    {
      "name": "No delete on properties",
      "description": "The fixed script does NOT use `delete` on object properties; instead sets them to `undefined` (or restructures to avoid removal)",
      "max_score": 10
    },
    {
      "name": "Rest params instead of arguments",
      "description": "The fixed script uses rest parameters (`...args`) instead of the `arguments` object in variadic functions",
      "max_score": 10
    },
    {
      "name": "Class or constructor for consistent shape",
      "description": "The fixed script uses a class or constructor function to ensure all objects of the same type share the same hidden class (same properties always initialized)",
      "max_score": 12
    },
    {
      "name": "Type stability fix",
      "description": "The fixed script maintains type consistency in returned values or computed properties (no function returning a number in one branch and a string in another)",
      "max_score": 14
    }
  ]
}