File

util.pubsub: Signal that 'persistent-items' is unsupported when disabled XEP-0060 says that this the way to indicate that 'persistent-items' is unsupported, but doesn't explicitly say if it being disabled in the node configuration also counts as unsupported.

local type s2s = function (s : string) : string
local record lib
	to : s2s
	from : s2s
end
return lib