Language servers · K3 Studio docs

K3 Studio speaks LSP over stdio JSON-RPC, and each kind of file gets its own server:

Files	Server
Lua	`qbx-lua-ls`
JS / TS	`typescript-language-server`
CSS / SCSS / LESS, HTML, JSON	`vscode-langservers-extracted`
Svelte	`svelte-language-server`

The web servers are installed once with bun and pinned to fixed versions. You can see each server's state (starting / idle) in the Web panel.

Features

Feature	Keys
Completion	as you type, `Ctrl+Space`
Hover	mouse over
Signature help	inside a call
Go to definition	`F12`
References	`Shift+F12` (opens the References tab)
Rename	`F2`
Format	`Shift+Alt+F`
Inlay hints	parameter names in Lua and TypeScript

Wrong-side natives: calling a server-only native in a client file (and the reverse) is flagged as you type
io / os.* on the client: flagged in client and shared Lua
Cross-resource globals: a global you use in one resource but define in another (or on another side) is flagged
Event and callback names: names complete inside Trigger* / Register*, lib.callback, ESX and QB calls, using an index of the whole server; F12 and hover work on them too
Whole-folder problems: Lua workspace diagnostics, plus tsc / svelte-check per app when you open the folder