deployed site missing dependency

[thinkingfish]

Describe the bug
I have a Framework project that uses apache-arrow, this dependency is declared in package.json, and when I execute npm run dev the pages works fine. However, when I deploy it, either to observable cloud or to netlify, it throws an error about missing package:

RuntimeError: error loading dynamically imported module: https://rezolus-ui.iop.systems/_npm/apache-arrow@16.1.0/_esm.js

Locally I can see this particular package being put under pages/.observablehq/cache/_npm during dev, but when I run npm run build, I don't see it under either dist/_npm or dist/_observablehq