Jint exception - Unknown type or Object expected

[srudolph-credera]

Note to the maintainer(s): Logging this as a combined issue + solution for anyone else that encounters it, feel free to close this immediately or make it a documentation update issue!

If you are attempting to test your SSJS-lib installation via a CloudPage and see an error in the preview after clicking "Schedule/Publish", do not assume that there will be an error in the actual published version of the CloudPage! In particular, the 'Unknown type' and 'Object expected' exceptions can be incorrect. The preview environment does not appear to add globally-scoped functions and vars defined in recursive scripts to the global scope, unlike the published environment.