Describe the bug

Some libraries don't work with Svelte 5 out of the box. It will probably be impossible to make every library compatible given that some use stuff svelte/internal (which they really shouldn't) and everything in there changed, but those who don't should be closely investigated. Feel free to post libraries you found that don't work in here, ideally along with a small reproduction (repro or "install and use component X").

Won't / can't fix

• @tanstack/svelte-table, because it uses svelte/internal in a way that can't be backported Svelte 5 support: ERROR: No matching export in "a" for import "b" TanStack/table#5213 - but a new version of the library is underway with Svelte 5 support! In the meantime there's also a drop-in replacement available at https://www.npmjs.com/package/tanstack-table-8-svelte-5
• cmdk-sv / shadcn-svelte search box - manually interacts with the DOM, needs change in the library Filtering breaks on Svelte-5 huntabyte/cmdk-sv#92
• Vercel AI SDK Svelte wrapper - a dependency of that library is using beforeUpdate, the dependency likely needs to be switched out for something else Svelte 5 Support vercel/ai#3107

Fixed

• svelte-confetti
• svelte-range-slider-pips (through fix: better interop of $state with actions/$: statements #10543)

Reproduction

Use the libraries and observe errors

Logs

No response

System Info

-

Severity

annoyance