@deijose/nix-js-language-server

LSP (Language Server Protocol) server for Nix.js html\`` tagged templates.

Provides diagnostics, autocompletion, hover help, quick fixes, and formatting — works in any editor that supports LSP.

Features

• Diagnostics: unknown modifiers, duplicate modifiers, passive+prevent conflict, key modifiers on non-key events, non-canonical modifier order
• Completion: @event names, .modifier suggestions, ref/show/hide directives
• Hover: help text for each modifier (.prevent, .stop, .enter, etc.)
• Quick fixes: dedupe modifiers, normalize order, resolve conflicts, replace unknowns
• Formatting: indents and wraps html\`` template content

Install

npm install @deijose/nix-js-language-server

Editor setup

VS Code

The vscode-nix-js extension launches this server automatically.

Neovim

require("lspconfig").nixjs = {
  cmd = { "nix-js-language-server", "--stdio" },
  filetypes = { "typescript", "javascript", "typescriptreact", "javascriptreact" },
}

Helix

# ~/.config/helix/languages.toml
[[language]]
name = "typescript"
language-servers = ["nix-js-language-server"]

Zed

"language_servers": ["nix-js-language-server"]

Emacs (eglot)

(add-to-list 'eglot-server-programs
  '((typescript-mode) . ("nix-js-language-server" "--stdio")))

Development

npm install
npm run typecheck
npm test
npm run build

License

MIT