nefftd

-- depends on tostringall() https://gist.github.com/nefftd/11382819
-- see: line 15
do
  local err_fmt = "bad argument #%d to '%s' (%s expected, got %s)"
  
  local function checktypelist(t,a1,...)
    if a1 then
      return t == a1 or checktypelist(t,...)
    end
  end