trying https://registry.npmjs.org/observable-fns/-/observable-fns-0.6.1.tgz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 16105  100 16105    0     0   189k      0 --:--:-- --:--:-- --:--:--  191k