I have not checked for internal parts that also might need explicit export rules, thus this might not be sufficient. It is at least enough to get npm run build and the site demo working.
There was an ugly type patch needed in menu/src/SelectionGroupIcon.ts, this should be revised by someone with more knowledge of the inner works.
Hey, thank you for this. Don't worry about the as unknown. Basically, we just don't want TypeScript to narrow the type when it's exported, so that works fine.
Shall fix #644.
Notes:
npm run build
and the site demo working.menu/src/SelectionGroupIcon.ts
, this should be revised by someone with more knowledge of the inner works.