I'd guess, the main reason is that the standard for doing so is not fixed. The idea seems that WASM tries to be a general compilation target, so they don't wan

I'd guess, the main reason is that the standard for doing so is not fixed. The idea seems that WASM tries to be a general compilation target, so they don't wanna mess it up by integrating with the web platform too soon. Don't know when or if the interface types are released.