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Module:No globals

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Revision as of 16:50, 4 May 2016 by imported>BryanDavis (1 revision imported from mw:Module:No_globals)
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Documentation for this module may be created at Module:No globals/doc (Test casesTest results)

local mt = getmetatable(_G) or {}
function mt.__index (t, k)
	if k ~= 'arg' then
		error('Tried to read nil global ' .. tostring(k), 2)
	return nil
function mt.__newindex(t, k, v)
	if k ~= 'arg' then
		error('Tried to write global ' .. tostring(k), 2)
	rawset(t, k, v)
setmetatable(_G, mt)