In this "playground", I'm trying to edit the data of a map of map (see src/routes/+page.svelte).
I'm aware of the "Bind to a Map() Object not possible #5721" issue, but while I'm waiting for it to be completed, and also for my personal culture, I'd like to find out how to implement it.
Context in french: https://github.com/stephane-klein/backlog/issues/295
$ asdf install
$ pnpm install
$ pnpm run dev
