code: async function mkfs(){
  
      // try to establish a connection to the module
      await getConnection();
  
      _mculogger.log('Formatting the file system...this will take around ~30s');
  
      try{
          const response = await _nodeMcuConnector.format();
  
          // just show complete message
          _mculogger.log('File System created | ' + response);
      }catch(e){
          _mculogger.error('Formatting failed');
          _logger.debug(e);
      }
  }
docs: format the file system