Module:No globals

See mw:Module:No globals

This is needed because the Scribunto version installed here is too old and doesn't have the built-in "strict" module.

---

-- Copied from [[mw:Module:No globals]] and [[commons:Data:I18n/No globals.tab]]
local mt = getmetatable(_G) or {}
function mt.__index (t, k)
	if k ~= 'arg' then
		error("Tried to read nil global" .. tostring(k), 2)
	end
	return nil
end
function mt.__newindex(t, k, v)
	if k ~= 'arg' then
		error("Tried to write global" .. tostring(k), 2)
	end
	rawset(t, k, v)
end
setmetatable(_G, mt)