[pumanoir]

That is correct, a minified JS will preserve most of the semantics of the original program. And since the original source can come from any language, how would one know which decompiler to use.

[MikeHolman]

You could already compile programs from other languages to javascript.

https://github.com/jashkenas/coffeescript/wiki/List-of-langu...

Wasm was effectively an extension of asm.js. It makes the experience of compile-to-web better, but it isn't much more opaque than other projects.