How to export Standard ML functions to JavaScript via EMSCRIPTEN?

问题

Is it possible to export a Standard ML function such as

fun fac 0 = 1
  | fac n = n * fac (n - 1);

To a respective JavaScript function, via Emscripten?

I know the compilation can be done, but I'm not sure how exactly you would access "fac" from JS code.

来源：https://stackoverflow.com/questions/20918629/how-to-export-standard-ml-functions-to-javascript-via-emscripten