I have written the same app in Svelte and React. This is the Svelte version. They will be presented on my channel to compare the concepts and developer experience of both frameworks.
https://week-planner-svelte.netlify.app
It is a basic week planner in which plans for every week can be managed. Plans are saved in local storage of the browser.
This is the size of the bundled, built assets (CSS + JS). Both versions use Vite.
These results are quite shocking and are similar to the findings of my earlier framework comparison project.