Module:No globals
This module causes an error if any nil global is read or if any global is written to, with the exception of arg. To use, add
require('Module:No globals')
to the top of the module using it. The arg variable is excluded because it is necessary for Scribunto's require function to work properly. (See the Scribunto source code here.)
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)
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