Satriani w/ Node prints "(program returned no output)" after program completion

[eliminmax]

I've written and rewritten a simple program to print a color test pattern using ANSI escape sequences, in 40 programming languages so far, for no real practical reason. The (program returned no output) message causes my test to validate that the pattern is properly generated to fail for the Rockstar implementation of my colortest program. I've taken to commenting out the line that logs that message in my local copy of satriani.

I tried to add give back "" to the end of the program, and it did not change anything.

If it works as intended, would you be willing to accept a PR to add a --quiet flag? Javascript isn't my language of choice, but using the --watch flag as a basis, I managed to implement one while drafting this issue.