Module:User:Mr. Stradivarius/sandbox

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local p = {}

function p.theError(n)
	if n == -1 then
		error('this has no explicit level')
	elseif n == 0 then
		error('this is level 0', 0)
	elseif n == 1 then
		error('this is explicit level 1', 1)
	elseif n == 2 then
		error('this is level 2', 2)
	else
		error('this is level 3', 3)
	end
end

function p._main(n)
	return p.theError(tonumber(n))
end

function p.main(frame)
	local args = require('Module:Arguments').getArgs(frame)
	return p._main(args[1])
end

return p