Editing tsconfig.json file my neovim is a nightmare. All the commented section for this json file is highlighted in red color. Its only for json files.
CodePudding user response：
tsconfig.json is not JSON. It is actually the poorly specified 
Add a :help modeline to your JSONC files:
// vim: filetype=jsonc
Set up proper filetype detection by putting this file under ~/.vim/ftdetect/, as per this document.