trying https://registry.npmjs.org/mappersmith/-/mappersmith-2.41.0.tgz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 54408  100 54408    0     0   158k      0 --:--:-- --:--:-- --:--:--  159k