Module:No globals: Difference between revisions
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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 error | |||
error(require('Module:TNT').format('I18n/No globals', 'err-read', tostring(k)), 2) | |||
end | |||
return nil | |||
end | |||
function mt.__newindex(t, k, v) | |||
if k ~= 'arg' then | |||
error(require('Module:TNT').format('I18n/No globals', 'err-write', tostring(k)), 2) | |||
end | |||
rawset(t, k, v) | |||
end | |||
setmetatable(_G, mt) | |||