Oh I do love that it worked this easily indeed, with all the consequences obviously. I saw your edit & warning too 
By the way, if you are adventurous and serious about investing more time into DOpus script, then you should definitely also look into TypeScript transpiling to ES3. Switching to TypeScript solved almost all my headaches I had with developing with vanilla JScript, big win being much easier modularization and superior IDE support in VSC.