Dear @vhancock,
Unfortunately, we don't include all the modules in Forms. So if you need other modules/packages, you can create a separate JS-project, import all the required modules, build it and include as external JS file into the form.
Also, graph client is extensible - it allows using any endpoint without extra modules; here is an example: https://community.plumsail.com/t/get-taxonomy-field-value-label/10083/5
Hope this helps! Let me know if I can help with this further.
PS. Once you have a preview for this functionality, please, send it to my email as we’ve discussed before. We’d love to publish this to our success stories, we just need something visual to go with the story 