beautify with js-beautify
put "whiteRe.test(output[output.length - 1]);" (used twice) in function
rename 'coma' to 'endChar' to represent more closely what it actually means
make sure there is exactly one whitespace after a colon (making a rule look like "color: red", not like "color:red")
add a newline after header-comments
introduce new option "end_with_newline".
The default value is "false" and this will make sure that the output ends with a newline ("\n")
don't add a newline between "{" and "}" when there is nothing in-between
before ".tabs {}" resulted in ".tabs {\n}". The rule is of course useless but a popular starting point