Version 2.6.2 breaks my SvelteKit app, causing infinite loading on localhost

[maoosi]

I'm facing an issue with my SvelteKit app after updating sveltekit-superforms to version 2.6.2. The Vite development server starts as expected, with no apparent errors in the console. However, when I try to access the local app URL, it results in an infinite loading state. Same goes when attempting to ping the URL using curl, so not a browser-related problem.

My Superforms implementation is pretty simple and uses the provided zod adapter. The app was running fine on SvelteKit version 2.5.2 before the update. Downgrading sveltekit-superforms back to 2.5.0 immediately fixes the issue, allowing for normal access to the application on localhost. This indicates that the problem is specifically related to the latest release.

There are no errors or warnings to provide any leads; the current behaviour makes me think the latest version of sveltekit-superforms is potentially creating a deadlock or infinite loop that prevents the application from completing its loading process.

I haven't tried reproducing the issue on a fresh SvelteKit installation yet; I'm first posting to see if anyone else might have encountered the same issue since upgrading.

[ciscoheat]

Please try to make a MRE, I'll take a closer look then.

[maoosi]

@ciscoheat I have finally found the issue!

I still had some v1 imports using /client and /server. Removing these and importing directly from sveltekit-superforms resolved the infinite loading issue.

Might be worth adding this to the v2 migration guide?

[ciscoheat]

Good find, added to the migration guide now.