Improves compared to redrawing the whole component on every render(), as render() returns the whole component. But there's no improvement over redrawing only wh

Improves compared to redrawing the whole component on every render(), as render() returns the whole component. But there's no improvement over redrawing only what's needed to be redrawn, plus VDOM overhead. I don't have enough to experience with Svelte, but I believe it's what it's doing.