584 items, 189 of them craftable, 70 NPCs and 3 bosses, read straight out of the mod.
Still in beta, so stats and recipes move between releases. These numbers come from the version listed above.
Items584
Craftable items189
NPCs70
Bosses3
Damage classes7
ItemCraftsMaterialsDepth
Where these come from
Starlight River is loaded into a headless tModLoader server and asked for its content directly, so these counts are whatever the build listed above actually registers. Recipes come from the loaded recipe table, which is why the trees can be rolled up and why they change when you add another mod alongside it.