text: """
  Utilities for mermaid2 module
  """
  import os
  import requests
  import logging 
  
  from mkdocs.utils import warning_filter
  
  
  # -------------------
  # Logging
  # -------------------
  log = logging.getLogger("mkdocs.plugins." + __name__)
  log.addFilter(warning_filter)
  
  MERMAID_LABEL = "MERMAID2  -" # plugin's signature label
  def info(*args) -> str:
      "Write information on the console, preceded by the signature label"
      args = [MERMAID_LABEL] + [str(arg) for arg in args]
      msg = ' '.join(args)
      log.info(msg)
   
  # -------------------
  # Paths and URLs
  # -------------------
  def libname(lib:str) -> str:
      "Get the library name from a path"
      basename = os.path.basename(lib)
      # remove extension three times, e.g. mermaid.min.js => mermaid
      t = basename
      for _ in range(3):
          t = os.path.splitext(t)[0]
      return t
  
  def url_exists(url:str) -> bool:
      "Checks that a url exists"
      if url.startswith('http'):
          request = requests.get(url)
          return request.status_code == 200
      else:
          os.path.exists(url)
  