jsftp example

function fetchFiles(path) {
      return new Promise(function(resolve, reject) {
        // Fetch started. Listing all files from the user specific directory.
        ftp.ls(path, function(err, res) {
          if(err || res.length === 0) return reject();
          // Close the ftp connection
          ftp.destroy();
          // Iterating files list          
          async.mapSeries(res, function(file, callback) {
            let buffer = false;
            const connection = new JSFtp(ftpInfo);
            connection.get(path + '/' + file.name, function(err, socket) {
              if(err) return reject(err);
          
              socket.on('data', function(data) {
                if (!buffer) buffer = data;
                else buffer = Buffer.concat([buffer, data]);
              });
        
              socket.on('close', function(err) {
                if(err) {
                  return callback(err);
                }

                callback(null, buffer);
                connection.destroy();
              });
    
              socket.resume();
            });
          }, function(err, buffers) {
            if(err) {
              return reject(err);
            } else {
              const result = res.map(function(file, index) {
                file.buffer = buffers[index];

                return file;
              });
              
              resolve(result);
            }
          });
        });
      });
    }