We are aiming for WASI hosts (like cloud services) which would not let us to map host FS.

• We could VFS DLLs, but we could also have memory snapshot instead
• We need to bundle the timezone database into .wasm and we need it for browser too. But it doesn't have to be VFS
• We need FS for runtime unit tests, but could be solved by mapping host directory (in our CI)

What are the other scenarios ?

also