Bug Description

I needed proxy support for node's built-in fetch. So I installed undici as a dependency and used setGlobalDispatcher together with ProxyAgent. Afterwards my rollup build failed with:

> rollup -c
./index.js → test...
(!) Unresolved dependencies
https://rollupjs.org/troubleshooting/#warning-treating-module-as-external-dependency
node:sqlite (imported by "node:sqlite?commonjs-external")
(!) Circular dependency
node_modules/undici/lib/web/websocket/util.js -> node_modules/undici/lib/web/websocket/connection.js -> node_modules/undici/lib/web/websocket/util.js

It also seems that node:sqlite is included in the final bundle. Do I need to configure rollup differently or is this a bug? I had no bundling problems before introducing undici…

Reproducible By

Clone https://github.com/soulchild/undici-rollup-bundle-failure and run npm run build.

Expected Behavior

rollup should be able to bundle undici without problems … and not include node:sqlite 😉

Environment

• macOS 15.2
• Node v22.10.0