The ml prototype in the draft specification repository (<a href="https:&#x2F;&#x2F;github.com&#x2F;WebAssembly&#x2F;spec&#x2F;tree&#x2F;master&#x2F;ml-proto" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;WebAssembly&#x2F;spec&#x2F;tree&#x2F;master&#x2F;ml-proto</a>) is the closest thing at present. ilwasm targets that presently.