Unfortunately, UI frameworks are extremely hard to modularize in a way that makes them amenable to tree-shaking. So you're left with the alternative – cobbling

Unfortunately, UI frameworks are extremely hard to modularize in a way that makes them amenable to tree-shaking. So you're left with the alternative – cobbling together your own pseudo-framework out of 'small modules', which loses all the ergonomic advantages of a good framework. As you might imagine, I've been thinking about this problem for a long time :)