I think a user of _not_ neovim they'd have to implement their own js client. I honestly can't say much but with INI style formatting it's been mostly based on contstants rather than abstract syntax tree parsing which is unique and a bit of a problem in its own right. I haven't implemented a language server before so this was a learning experience, but I was very pleasantly surprised how adding it to my neovim configuration was. I am hoping at some point it's added to "mason" so it's even easier.

I would create a vscode client, but I am not really very familiar with that ecosystem. Welcoming anyone to implement this in any other editors. This is just the language server implementation with no assumption regarding clients.