code: function logMessage(fig, st, lns) {
    return lns.reduce((a, b) => a.concat(`  ${b}`), [`\n${fig} ${st}`]);
  }
docs: It adds an icon and tabulates the log massage.
  @param  {string} fig     Icon.
  @param  {string} st      First line of the log message.
  @param  {array}  lns     Rest of the message.
  @return {array}          Parsed message.