Given the stdlib modules listed as "explicitly not done yet", I'm going to say: it doesn't yet, in any meaningful sense. The question then becomes: how confident do we feel that it will work in the near future?

I was trying to say "not confident at all" but hedged a bit too much.

I see this as a case of the "quick to get to a POC that falls apart after sustained development for the same reasons it didn't work pre-Fable" problem.