This is from WebStorm:

None of the functions are completing. Is there a way to type cast or if not can you add a JSDoc friendly function?

In the past I've solved this problem in a few ways. Notable two:

• Preferred: Created a full JSDoc'ed function for my index script that points to my functions source files. This takes about 1 minute per new method definition or update but also allows accurate source jumping too: I did this by creating a manual list of functions that have the same arguments and call the source. Each time I created or modified the function, I made the same updates to my index script.
• Quick & Dirty: Created a single file in the project that is not used, pretty much just for the IDE to index and autocomplete

Regards,