Save your npm package namespace.
pnpm -g add @savejs/npm
yarn global add @savejs/npm
npm i -g @savejs/npm
save-npm [@scope/]<package>[@version]
save-npm @savejs/npm@0.0.1
> ERR 403 Forbidden ...
save-npm save-js-npm@0.0.1
> ... npm publish save-js-npm@0.0.1