Building Meshtastic-web

Hi all!

I’m trying to build the meshtastic-web from the source code to start tinkering, but keep getting an error when running yarn build, telling me "meshtastic-web/src/App.tsx(205,56):
Property ‘GetAppDataMessage’ does not exist on type ‘Data’. "

VSCode also confirms that it cannot find a reference to the method. I’m sure that I’ve probably just failed to import something correctly. I have installed the meshtastic.js using yarn, but not sure what else I’m missing. Any pointers?

Thanks in advance!