prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  gradle
   +--api
   |   `--internal
   |       `--initialization
   |           `--loadercache
   +--internal
   |   `--serialize
   |       `--kryo
   `--tooling
       `--internal
           `--provider
               `--serialization
  ```
  
  Convert this description:
  
  babel-runtime-corejs2 is a source directory that holds 3 subdirectories: core-js, helpers and regenerator.
  At the main level, 'core-js' hasn't been filled with any content.
  At the top level, 'helpers' shelters 1 child directories: esm.
  In nested path 'helpers → esm', Inside 'esm', you'll find it contains nothing at present.
  In the root directory, 'regenerator' awaits content.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "babel-runtime-corejs2\n +--core-js\n +--helpers\n |   `--esm\n `--regenerator", "description": "babel-runtime-corejs2 is a source directory that holds 3 subdirectories: core-js, helpers and regenerator.\nAt the main level, 'core-js' hasn't been filled with any content.\nAt the top level, 'helpers' shelters 1 child directories: esm.\nIn nested path 'helpers \u2192 esm', Inside 'esm', you'll find it contains nothing at present.\nIn the root directory, 'regenerator' awaits content.\n"}