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is there anything like Svelte that compiles down to maybe plain webcomponents that can be called and used from JS code like native HTML elements?

Check Kobweb + Silk! <https://kobweb.varabyte.com/docs/getting-started/what-is-kobweb>
<https://kobweb.varabyte.com/docs/concepts/presentation/silk>

They also have a channel <#C04RTD72RQ8|>

this looks like a react sort of framework

or does kobweb compile down to reusable web components?

it compiles down to HTML/CSS/JS without virtual DOM

so can you create a component in kobweb and for instance reuse it in a handlebars template inside another JS app?

No, you can't, components are just inlined and the JS is mangled in the bundle, I think that you can compile JS to one JS file per Kotlin file, but that's all, and the HTML/CSS isn't separated

But you should ask that to <@U02AB5P2XU6>

my use case is integrating with some sort of MVC JS frameworks that renders out HTML using handlebars

there is a lifecycle model built in that publishes data over websockets, so interacting with it natively is a bit of a pain

you shouldn't try to mix very different technologies in my opinion, if it work it will probably an unstable hack

so being able to for example extract a tab component built in Kotlin and reusing it in JS without any sort of interop issues would be the ideal use case I think

the other devs that try to interop with that model are right now looking at svelte because it's self contained and can be used without a massive overhead like vdom

Thanks for looping me in <@U021AJK3ZUL>. I actually haven't experimented too much with generating JS output that can be used in other projects (<https://kotlinlang.org/docs/js-to-kotlin-interop.html|outside of being aware that it is possible>). That said, I'm not sure if Silk would work for this use-case.

Kobweb as a framework is definitely too heavy -- it wants to own and manage your application, <https://github.com/varabyte/kobweb/blob/main/frontend/silk-widgets/README.md|You can use Silk widgets without Kobweb, though>, and there may be a path forward there. But I haven't tried it.

thanks, so I suppose the way to do that would probably be to write a small wrapper around web components in that case

Are you trying to consume JS in your Kotlin project or the other way around?

both; basically I subclass an Application class which renders a popup and return a JS object which is then rendered into an associated handlebars template

since there's not a really good way to control rendering, just including the component in the handlebars template would be completely transparent

still, thank you for answering, that helped me to narrow down what I need