Verdaccio

I was trying to find something that would allow me to cache npm packages at once and not having to redownload the same package again for different projects or on different computers, so that's when I found this proxy registry. Use it locally to expedite your npm installs on one or more systems. You can also publish your private packages to it to share across your system/s and can use it to test publishing an npm package before you publish the final version to the npm registry