File

util.datamapper: Fix error on attempt to coerce nil to something Turns falsy values into nil instead of nothing, which ensures this function always has 1 return value, or table.insert({}) complains. Would still happen on some unexpected input, but that's actually a good thing.

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