{
  "context": "This criteria evaluates how well the engineer uses Babel's API to transform advanced class features (private fields, private methods, and super calls) into backwards-compatible JavaScript. The focus is on proper usage of Babel's transformation APIs and relevant plugins.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Babel Core Usage",
      "description": "Uses @babel/core's transformation API (transformSync, transform, or transformAsync) to parse and transform the input code",
      "max_score": 25
    },
    {
      "name": "Private Fields Plugin",
      "description": "Configures and uses @babel/plugin-proposal-class-properties or @babel/plugin-transform-class-properties to transform private field syntax (#field)",
      "max_score": 20
    },
    {
      "name": "Private Methods Plugin",
      "description": "Configures and uses @babel/plugin-proposal-private-methods or includes private method transformation as part of class properties plugin configuration",
      "max_score": 20
    },
    {
      "name": "Classes Plugin",
      "description": "Uses @babel/plugin-transform-classes to handle class transformation including super calls in constructors and methods",
      "max_score": 20
    },
    {
      "name": "Plugin Configuration",
      "description": "Properly configures plugin options in the plugins array passed to Babel's transform API, ensuring plugins are applied in the correct order",
      "max_score": 10
    },
    {
      "name": "Output Handling",
      "description": "Correctly extracts and returns the transformed code from Babel's transformation result object (e.g., result.code)",
      "max_score": 5
    }
  ]
}