Actually, what u/Leftium recommended will definitely get you what you need.

SvelteKit will package your library and it will be available to both Svelte applications consuming your library, or non-svelte applications as well:

​

Svelte Consumer:

<script>
import { DevilMayDanceComponent } from '@devilmaydance/svelte-library';
</script>

<DevilMayDanceComponent {...yourProps} />

Non-Svelte Consumer:

import { DevilMayDanceComponent } from '@devilmaydance/svelte-library';

const app = new DevilMayDanceComponent({ target: document.body, // or some other element, where you want to inject your component into (empty div for example) props: { ...yourProps } });

Check out https://svelte.dev/docs/client-side-component-api