Comment by a_wild_dandan

Using TypeScript for the entire stack feels like a superpower. The type system is incredible. V8 is fast. The frameworks are phenomenal (Next.js, Material UI, etc). The ecosystem is enormous, with packages for everything. The unified codebases save gobs of duplicate code (e.g. ferrying data betwixt client/server). I'm not surprised that such an expressive system can play Sudoku!