In a lot of ways neovim can be a TUI VSCode. It supports the language server spec and all that. It does require (kinda complicated) config. But you can steal examples from the internet. There's also the ecosystem of plugins to do fancier stuff like code snippets, menus, status bars, etc.

But I don't do things like jumping to declarations with it. That's likely a thing with some plugin, I just don't know. I generally try to avoid traditional OO languages when I can. I used to use IntelliJ for those, but I have actually switched to VSCode for them and some of the things I've always used vim/neovim for, like larger Go projects.

I make any IDE act like vim because my hands want to do modal editing. That's a thing where my habits impact my perceived ergonomics. If it doesn't support that, I won't use it. It's just too frustrating.

I don't use Javascript except when I have to. If that's part of a TUI VSCode for you, then this may not be helpful.