Unused export properties warnings from vite-plugin-svelte about svelte-headlessui HOT 5 CLOSED

Thanks for the report! I see this as well.

This is due to the same issue as here: sveltejs/language-tools#573 The library uses a bunch of different export enum statements, and it looks like TypeScript transpilation ends up producing code that generates these warnings. The linked issue just silenced the warnings in the language tools, but that doesn't help other parts of the ecosystem like vite-plugin-svelte. It feels to me like the transpilation process needs to be fixed to not produce Svelte code that will generate a warning. I'm not sure which tool should ultimately be responsible for fixing this, so I'll poke around and see what we can do.

In the meantime, it's completely safe to ignore these; they're a false positive. Sorry for the spam!

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Just as an FYI to anyone following this thread--because I personally find this super annoying, especially in the REPL, so I imagine you folks do too--I submitted a PR to Svelte itself that would fix these warnings. So far the maintainer response has been positive so I'm optimistic it could land within the next few weeks. Thanks for your patience!

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Is it the same issue with these warnings?

[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/components/dialog/Dialog.svelte:2:11 Dialog has unused export property 'DialogStates'. If it is for external reference only, please consider using export const DialogStates
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/components/disclosure/Disclosure.svelte:3:11 Disclosure has unused export property 'DisclosureStates'. If it is for external reference only, please consider using export const DisclosureStates
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/components/listbox/Listbox.svelte:1:37 Listbox has unused export property 'ListboxStates'. If it is for external reference only, please consider using export const ListboxStates
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/components/menu/Menu.svelte:9:11 Menu has unused export property 'MenuStates'. If it is for external reference only, please consider using export const MenuStates
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/components/popover/Popover.svelte:1:37 Popover has unused export property 'PopoverStates'. If it is for external reference only, please consider using export const PopoverStates
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/internal/StackContextProvider.svelte:1:37 StackContextProvider has unused export property 'StackMessage'. If it is for external reference only, please consider using export const StackMessage
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/utils/Render.svelte:21:11 Render has unused export property 'RenderStrategy'. If it is for external reference only, please consider using export const RenderStrategy
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/utils/Render.svelte:3:11 Render has unused export property 'Features'. If it is for external reference only, please consider using export const Features
[vite-plugin-svelte] ./node_modules/@rgossiaux/svelte-headlessui/components/transitions/common.svelte:4:11 Common has unused export property 'TreeStates'. If it is for external reference only, please consider using export const TreeStates

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After a long wait, Svelte 3.46.5 was just released today, which contains a fix for this issue that I submitted myself.

You can upgrade Svelte to 3.46.5 and these warnings should finally go away!

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I saw two members already looked at the PR. Hopefully a maintainer will have a chance to get to it soon. Thanks for tackling that issue, @rgossiaux, as it creeps up in playwrite runs too and I'm about to >/dev/null 😆

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