Make downloaded version work offline

The current downloaded tarball version should be able to work offline (it does not today).
Is it possible to have an extra option that allows for offline downloads? or even a special script?


Currently, all of a notebook’s external dependencies are requested from unpkg at notebook runtime … or whichever external resource you have explicitly requested by URL.

(Note that this includes things like our markdown library, marked, which is needed if you use the md tagged template literal.)

In the future, for simple cases, where the name of the requested module can be determined statically … we might download and bundle the external libraries into the tarball download. But I’m afraid that we’re not there yet.