text: const RE_CMD = /^(.*)(?=\s)(.*)$/;
  const RE_PORT = /([\d]{1,3}),([\d]{1,3}),([\d]{1,3}),([\d]{1,3}),([-\d]{1,3}),([-\d]{1,3})/;
  const RE_PASV = /([\d]+),([\d]+),([\d]+),([\d]+),([-\d]+),([-\d]+)/;
  const RE_RES_END = /(?:^|\r?\n)(\d{3}) [^\r\n]*\r?\n/;
  
  module.exports = {
    RE_CMD,
    RE_PORT,
    RE_PASV,
    RE_RES_END
  };
  