IMPORTANT:
No changing the brainsplosion code to reduce the size.
ALSO IMPORTANT:
Output always on the same line, no 'console.log', only 'process.stdout.write'.
Tip: the code '++++++<+++++,+,+,' prints 'ABC'.
Current size: 154 chars
[0,...'++++++<+++++,+,+,'].reduce((r,e)=>"+"==e?r+1:"-"==e?r-1:"<"==e?10*r:">"==e?r/10:process.stdout.write("."==e?""+r:","==e?String.fromCharCode(r):"")&&r);