Bug:

Using characters like for example "," and "@" result in a file creation or compile error due to the fact that the aren't removed from the processed text and are written to the java file.

Possible Solution:

Change the regex expression "singleLineComment" in server/src/preprocessing.ts

from: export let singleLineComment = /\/\/([ ]*([A-Za-z\"\.\(\)\'\=\<\>\!])\w*)*/g
to:     export let singleLineComment = /\/\/(.)*/g