I just checked and the mod does work with the artifacts. However, you do have to use the virtual recipe signals for them, because the recipes have different names than the items (and there are two different recipes for them).
While looking into this, I noticed that the virtual recipe generation didn't assign proper icons and locale for the artifacts. This doesn't have any effect on the behavior of the mod, but it's confusing and ugly, so I'll push an update for it soon.