When running ccjs from the command line, it will return exit status "0" (Success) even when there were errors.
It should return some other exit status to indicate an error
$ ccjs test.js && echo "SUCCESS"
... snip ...
_build/all.js:2214: ERROR - Parse error. identifier is a reserved word
while (k < final) {
^
11 error(s), 0 warning(s)
SUCCESS