### What's the problem? The `selfSignedCert` option passes an undici `Agent` as `dispatcher` to `fetch()`. But Node's built-in `fetch()` and undici@8's `Agent` use different internal handler APIs - passing them together throws: ``` invalid onRequestStart method ``` ### What's the fix? When `selfSignedCert` is enabled (i.e. a `dispatcher` is set), use undici's own `fetch()` instead of the global one. For all other requests, keep using `globalThis.fetch`. ```js const fetchFn = requestOptions.dispatcher ? undiciFetch : globalThis.fetch; ``` ### Why not just always use undici's fetch? That would fix the crash - but it would break some tests. MSW (Mock Service Worker), which is used in our test suite to intercept HTTP requests, only hooks into `globalThis.fetch`. Undici's fetch bypasses those interceptors entirely, so tests would start making real network requests instead of getting the mocked responses. We could rewrite all tests to use undici-compatible mocking instead - but that would be a massive change for no real benefit. ---- Fixes #4093
MagicMirror² is an open source modular smart mirror platform. With a growing list of installable modules, the MagicMirror² allows you to convert your hallway or bathroom mirror into your personal assistant. MagicMirror² is built by the creator of the original MagicMirror with the incredible help of a growing community of contributors.
MagicMirror² focuses on a modular plugin system and uses Electron as an application wrapper. So no more web server or browser installs necessary!
Documentation
For the full documentation including installation instructions, please visit our dedicated documentation website: https://docs.magicmirror.builders.
Links
- Website: https://magicmirror.builders
- Documentation: https://docs.magicmirror.builders
- Forum: https://forum.magicmirror.builders
- Technical discussions: https://forum.magicmirror.builders/category/11/core-system
- Discord: https://discord.gg/J5BAtvx
- Blog: https://michaelteeuw.nl/tagged/magicmirror
- Donations: https://magicmirror.builders/#donate
Contributing Guidelines
Contributions of all kinds are welcome, not only in the form of code but also with regards to
- bug reports
- documentation
- translations
For the full contribution guidelines, check out: https://docs.magicmirror.builders/about/contributing.html
Enjoying MagicMirror? Consider a donation!
MagicMirror² is Open Source and free. That doesn't mean we don't need any money.
Please consider a donation to help us cover the ongoing costs like webservers and email services. If we receive enough donations we might even be able to free up some working hours and spend some extra time improving the MagicMirror² core.
To donate, please follow this link.

