Module:No globals

local mt = getmetatable(_G) or {}function mt.__index (t, k)if k ~= 'arg' then-- perf optimization here and below: do not load Module:TNT unless there is an errorerror(require('Module:TNT').format('I18n/No globals', 'err-read', tostring(k)), 2)endreturn nilendfunction mt.__newindex(t, k, v)if k ~= 'arg' thenerror(require('Module:TNT').format('I18n/No globals', 'err-write', tostring(k)), 2)endrawset(t, k, v)endsetmetatable(_G, mt)