code: function reload_file(arg_file_path)
  {
  	const file_name = path.basename(arg_file_path)
  	const this_file_name = path.basename(__filename)
  	if (file_name == this_file_name)
  	{
  		console.info('Need to reload after change on ' + this_file_name)
  		return
  	}
  	
  	const exts = ['.js', '.json']
  	const ext = path.extname(arg_file_path)
  	const full_path = path.resolve(arg_file_path)
  	
  	if ((exts.indexOf(ext) > -1) && (full_path in require.cache))
  	{
  		console.info('Reloading: ' + full_path)
  		// console.log(require.cache[full_path].parent.children[0])
  		
  		delete require.cache[full_path]
  		require(full_path)
  	}
  }
docs: Reload a file.
  
  @param {string} arg_file_path - file path name.
  
  @returns {nothing}