tsx and mdx files

Hi, Has anyone managed to find proper highlighting support for `mdx` files ? Markdown mode doesn't cut it. Also, anyone editing `tsx` files on emacs? I'm trying to work with gatsbyjs. Looking for tips and tricks from more experienced users!

for tsx I use typescript-mode or rjsx-mode (both on melpa), but it seems you could even use tree-sitter for that [https://github.com/emacs-typescript/typescript.el/issues/4#issuecomment-873485004](https://github.com/emacs-typescript/typescript.el/issues/4#issuecomment-873485004) to have a better syntax highlighting. lsp-mode/tide for completion and other goodies