[redbar0n]

The author recommends ThemeUI, Rebass, Stitches and Radix for design systems, specifically. They might add undue bundle size, to various degrees. Looks like Radix' tooltip is now at 12.77 kB: https://www.radix-ui.com/docs/primitives/components/tooltip

But a recent and very powerful alternative is Tamagui which takes inspiration from all of those. All for the cost of some 20-27kB, apparently with a clear path to come below 8 kB in the future: https://tamagui.dev/blog/version-one#bundle-size-reduction

It even has a tooltip feature, using floating-ui, which one may or may not add, and seems to come in at around 23 kB (in excess of tamagui core, when overlapping sub-libraries in @floating-ui/react-dom-interactions are discounted)... https://bundlephobia.com/package/@tamagui/tooltip@1.0.5 It's still a bit, but fortunately it's not in core so it's optional to include.