Npm registry availability issues

Hi, it seems like the last versions of the javascript project maintained by the Basecamp team are unavailable on npm registry including Stimulus:

npm ERR! code E404
npm ERR! 404 Not Found - GET https://registry.npmjs.org/@stimulus/polyfills/-/polyfills-1.1.1.tgz
npm ERR! 404
npm ERR! 404  '@stimulus/polyfills@latest' is not in the npm registry.
npm ERR! 404 You should bug the author to publish it (or use the name yourself!)
npm ERR! 404
npm ERR! 404 Note that you can also install from a
npm ERR! 404 tarball, folder, http url, or git url.
npm ERR! A complete log of this run can be found in...

Can you help fixing the issue?

PS : I created the following tickets on Github for Rails and Stimulus

Issue on npm side fixed