shadcn shipped `cn`, a drop-in replacement for tailwind-merge and clsx claiming 30x faster class merging.

Created August 31, MIT, 1,038 stars, pushed today. Same APIs, full parity. Because cn runs on every render of every component in a shadcn codebase, this is one of the rare dependency swaps where a microbenchmark claim maps to something you can feel, and parity makes the migration a package change rather than a refactor. GitHub