Unpkg imports failing, apparently "bare" imports not working?

Importing modules from unpkg started to fail for me today. It occurred both in my own pages and in Observable. It appears to be related to bare import paths within the D3 index.js files.

You can see it here: https://beta.observablehq.com/@tmcw/introduction-to-require … just scroll down to the imports section and you’ll see:

This snippet works for me
scale = import('d3-scale')

Yup, works now. Apparently a temporary glitch on unpkg.

As a note: apparently bare imports badly need a standard “resolver” like require has for node. There is one in the work in TC39, the ECMA standards group.