Need some help for a plugin for static websites

Hi, I'm building Feelback.dev to easily add Like buttons on static blogs, or widgets like Do you find this page useful? on documentation pages or the general Send Feedack form.

To make the integration effortless, I plan to build several packages for the most common frameworks and site-builder.

I'm familiar with plain React only. Where I can find some guidance on how to build 'plugins' for other frameworks? Like Vue, Svelte, etc... given that I start from JS, so I'd like to check common best practices and conventions to build something in the style of such libraries.

I did try nextjs or others built on top React, but they all require additional steps than just importing the React package and use a component. So, some help on this side may be useful too.

In general, how difficult is for a Vue dev to read a React doc and make it's own component? I expose an API, so he can build it's own UI and call the http endpoint.

Thanks. I appreciate any help.