On OS X, at least (not sure about other platforms), it is possible to use open to bring an existing window of an app to the foreground. Example:

open -a Terminal

Is it possible to do this with this project? It seems like target is required so I won't be able to mimic open -a Terminal exactly. I tried passing an empty target

open('', {
  app: 'Terminal'
}).catch((err) => {
  debug('Could not activate Terminal:', err);
});

but this opens a new Terminal window rather than bringing the existing one to the foreground.