code: function getAvailablePortSeries(start, quantity, increment = 1) {
    const startPort = start;
    const endPort = start + (quantity - 1);
  
    return findAPortInUse(startPort, endPort, '127.0.0.1').then((port) => {
      if (typeof port === 'number') {
        return getAvailablePortSeries(port + increment, quantity);
      }
  
      const ports = [];
  
      for (let i = startPort; i <= endPort; i += increment) {
        ports.push(i);
      }
  
      return ports;
    });
  }
docs: Finds a series of available ports of length quantity, starting at a given port number and incrementing up. Returns an array of port numbers.