neodev.nvim VS lua-language-server

Also the vim API signature is not available using the fennel-language-server In lua you can install neodev and you will get some nice lsp suggestions with the vim API, this is sadly not possible in fennel right now

Other than the root_dir problem, I think the lsp server might have been attached but configuration would be different. For instance, if one is using folke's neodev for API completion (https://github.com/folke/neodev.nvim/issues/158) it would work differently for nvim config files and other lua workspaces.

Try to debug what happens on exit, maybe https://neovim.io/doc/user/starting.html#-V works. Regarding nvim-cmp being slow, do you have https://github.com/folke/neodev.nvim installed? If yes, try removing it and checking if it's an issue. It's been slowing down my completion for a while until I pinpointed the issue (and it was slowing it down always, not just when editing lua code).

You can try neodev.nvim. It's really great especially if you're planning for plugin development.

Are you using https://github.com/folke/neodev.nvim ?

Okay i figured it out myself https://github.com/folke/neodev.nvim provides lua files with the required type signatures.

Check the documentation of lua_ls

You can use LLS extension for VSCode. Documentation: https://github.com/LuaLS/lua-language-server/wiki/Annotations

There's lua-language-server which works with types defined in definition files and/or annotations in comments.

Lastly, neovim now supports semantic token highlighting which uses semantic tokens from LSP servers to provide even better, language specific highlighting. Some LSP servers support semantic tokens for doc comments. The lua language server is a good example. Unfortunately, if you're using a language like C or C++, the language servers do not provide semantic tokens for comments because doxygen style comments are not specific to those languages so you might be out of luck for semantic token highlighting.

I think it is because the language server send a different type for the first line: https://github.com/LuaLS/lua-language-server/blob/eeffd1462b892fda5d01282acf840ba0e154e467/script/core/hover/label.lua (might be one of the other files here, not label)

And I was reading this installation guide and after "./bin/lua-language-server " I get this in terminal

Not sure about typescript but there is a jsdoc equivalent: https://github.com/LuaLS/lua-language-server/wiki/Annotations

Lua with lua-language-server and annotated types is a much nicer experience.

For it to be language-aware (like provide suggestions for module/table/class methods/fields) you also need language server (like lua_ls for Lua). But even without it you should see suggestions from fallback method. If you don't, then 'mini.completion' is not installed and/or activated.

I also want to thank current & past GitHub sponsors who help finance costs associated with the plugin. I regularly pay the surplus forward to other devs whose tooling I heavily rely on (huge shout-out to sumneko for working on the Lua language server, without it a plugin of the complexity of mason.nvim would be impossible, go sponsor them here).