Load a markdown file in Expo 40+ using typescript

In Expo 40, I need to load markdown files from my local bundle. I'm also using typescript.

I found this post describing a solution, but the assetsExt App.json key doesn't seem to work anymore.

I've tried following the typescript tips to add a declaration and add it to my tsconfig, and that lets typescript find it but my when I load my react-native app, it still does not resolve the app:

Unable to resolve module ./../../../assets/SOME_MARDOWN.md from /app/xxxx/SOME_COMPONENT.tsx:None of these files exist:...