How to use third-party npm in Dynamic properties in ByLineItem of Forge?

[NGPilot]

I know that I can install third-party npm to use in UI both UIKit and custom UI, but when I use one in the dynamic properties handler, things changed, it seems throw errors but I don't know how to debug it to prove my guess.

Here's a code sample from official docs: 

When I add import a from `a` then call a inside handlerFunction, it does not work, after I remove the import line keep all code original it works!

I do a small test to copy all code from the module a here above handerFunction, it does not work again, but when I move them into handlerFunction body before return, it works!

I don't know the restriction, how to use the third-party npm inside the dynamic properties handler? Can I use the third-party npm inside the dynamic properties handler?

[John Funk]

Hi NG Pilot - Welcome to the Atlassian Community!

You should probably submit a support ticket to Atlassian for their assistance. 

https://support.atlassian.com/contact/#/