[numbsafari]

Did you bother to look at it?

It has a single dependency, and that single dependency has no dependencies of its own.

So what is that dependency?

"temporal-spec"

And it looks like it comes from the same github repo. It basically looks like they broke out the API definitions so that they could be depended on by other potential implementations. This isn't atypical.

[yread]

Oh sorry I was looking at https://www.npmjs.com/package/@js-temporal/polyfill

this one looks much better indeed