prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  babel-plugin-bugfix-v8-static-class-fields-redefine-readonly
   +--src
   `--test
       `--fixtures
           +--assumption-setPublicClassFields
           |   +--length-name
           |   `--other
           `--basic
               +--after-side-effect
               +--computed
               +--length-name
  ```
  
  Convert this description:
  
  dir --out-dir --watch with external dependencies is a origin directory that bundles 2 subdirectories: in-files and out-files.
  At the top level, 'in-files' maintains 1 nested folders: src.
  Within directory hierarchy 'in-files → src', 'src' is a vacant space.
  Back to the top level.
  At the main level, 'out-files' groups 1 folders: lib.
  Within directory hierarchy 'out-files / lib', The 'lib' section is blank.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "dir --out-dir --watch with external dependencies\n +--in-files\n |   `--src\n `--out-files\n     `--lib", "description": "dir --out-dir --watch with external dependencies is a origin directory that bundles 2 subdirectories: in-files and out-files.\nAt the top level, 'in-files' maintains 1 nested folders: src.\nWithin directory hierarchy 'in-files \u2192 src', 'src' is a vacant space.\nBack to the top level.\nAt the main level, 'out-files' groups 1 folders: lib.\nWithin directory hierarchy 'out-files / lib', The 'lib' section is blank.\n"}