This sub, good people and great to find new LPTs for react, such as my next item:
Mantine, awesome work, slim things with exceptional API design for anything, used their ResizeOberver hook, smallest and best implementation, was misled by npmtrends before. Or their useMediaQuery is stunning.
Then, valtio, most underrated state management ever, a buttersmooth lib which allows crazy elegant integration of any state in a app. Its UX and beauty (which stays even with complex state matters) is remarkable.