As of npm 6.13, maintainers can add a funding field to their package.json (which works very much like GitHub’s FUNDING.yml) and users can run npm fund to see how they can support their dependency authors.

Darcy Clarke had this to say about the feature on npm’s blog:

Post install you will now see output that describes the number of packages that have defined funding information. You can opt-out of this prompt by using the –no-fund flag if you so choose.

At the end of August, we made a promise to the community to invest time & effort to better support package maintainers. This work is just the first, small step toward creating a means/mechanism for a more sustainable open source development ecosystem.