{
  "context": "This criteria evaluates how well the engineer configures and uses Babel's runtime helper management system to transform async/await and class features while externalizing helper functions to avoid code duplication. The focus is on proper setup of @babel/plugin-transform-runtime and understanding of how Babel handles runtime helpers.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Babel configuration exists",
      "description": "A Babel configuration file (.babelrc, .babelrc.js, .babelrc.json, babel.config.js, or babel.config.json) is present in the project",
      "max_score": 10
    },
    {
      "name": "Runtime plugin configured",
      "description": "The @babel/plugin-transform-runtime plugin is included in the Babel configuration plugins array",
      "max_score": 25
    },
    {
      "name": "Runtime dependency installed",
      "description": "The @babel/runtime package is listed as a dependency (not devDependency) in package.json",
      "max_score": 15
    },
    {
      "name": "Helper externalization",
      "description": "The compiled output uses imported helpers from @babel/runtime/helpers/ instead of inlined helper functions, demonstrating proper externalization of Babel helpers",
      "max_score": 20
    },
    {
      "name": "Regenerator handling",
      "description": "Async/await and generator code is transformed to use @babel/runtime/regenerator instead of inlining the regenerator runtime",
      "max_score": 15
    },
    {
      "name": "Appropriate plugin options",
      "description": "The @babel/plugin-transform-runtime plugin is configured with appropriate options (e.g., corejs: false for helper-only mode, or version specification if using corejs)",
      "max_score": 10
    },
    {
      "name": "Correct implementation",
      "description": "The async utilities (asyncMap, collectAsync, AsyncQueue) are correctly implemented and all test cases pass",
      "max_score": 5
    }
  ]
}