To be that dick, a headless component library is still meant to do something, show an example of it being used!

If you've written a "usage" section that showcases more than one uselessly simple example that doesn't even work in the project's current state, you're already far ahead of the average.

Even for a CLI tool, there should be a real world example showing how it works and what the output looks like. Eg, for jq:

$ cat file.json
{"field: "value"}
$ jq '.field' file.json
"value"

And a few other examples.