trying https://registry.npmjs.org/showdown/-/showdown-2.1.0.tgz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  162k  100  162k    0     0  1779k      0 --:--:-- --:--:-- --:--:-- 1783k