Manually emitting and serving a static html file with(out) netlify-adapter

[moiri-gamboni]

Hi all,

I’m trying to manually generate a static html file during the build and serve it on Netlify. I’m using a custom Vite plugin to do so. The file is clearly being emitted in the logs, and I can download it in the deploy’s file browser. I can also access it on my local production build with Vite, but not with netlify serve or on the web deploy which result in a 404. I see that it’s not in the manifest’s assets, which I assume is the issue, but I don’t know why it isn’t there or how I’m supposed to add it/prevent SvelteKit from treating it as a non-static asset. I tried manually adding it to included_files in netlify.toml but it made no difference. I also tried writing the file using fs rather than emitFile() but again it didn’t work. Other static files which are present under /static before building are accessible as normal, as well as other non-static routes.
Latest deploy
Repo
Where I emit the file

Thank you in advance!