How to detect "No such file or directory" error?

[wf9a5m75]

Hi, could you tell me how to catch the "No such file or directory" error?

var base64 = require('base64-stream');

client.pull(device.id, '/sdcard/mydata.txt')
  .then(function(transfer) {
     transfer.pipe(base64.decode()).pipe(process.stdout)
  })
  .catch(function(error) {
    console.log('-----> error');  // <-- This does not work.
  });

[wf9a5m75]

I also tried using callback, but I could not catch the error.

client.pull(device.id, '/sdcard/mydata.txt', function(err) {
    console.log(err);  // <-- This output is "null", but 'No such file or directory' error occurs.
} );

[wf9a5m75]

I figured out finally, but please tell me if there is more any better way.

  client.syncService(device.id).
      then(function(sync) {
        sync.pull( '/sdcard/mydata.txt')
        .on('error', function(err) {
          console.log("---> error");
          console.log(err);
        })
        .on('end', function() {
          sync.end();
        })
        .pipe(process.stdout);
      });