The fact that it runs at all is an amazing achievement. Kudos to the team that managed to shoehorn it in.

What is likely to be seen as a bug by others, is actually the thing that gives me hope. There's no way for a WebAssembly program to access the host file system. I hope it stays that way.

If the Wasm host can, in a foolproof and easy to verify way, offer the user dialog boxes to read/write single files... we'd have the "PowerBox" that is required to make a modern capability based operating system.

Preventing a process from deciding itself which files to access disables so many attack vectors.