nvim/.claude/CLAUDE.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

This is a personal Neovim configuration (~/.config/nvim) targeting Neovim 0.12+. It uses Neovim's built-in vim.pack plugin management (available in 0.12+) rather than external plugin managers like lazy.nvim or packer.nvim.

A custom lightweight lazy-loading framework lives in lua/lazy.lua that wraps on_event/on_keys/load to defer heavy module initialization until first use.

File Architecture

init.lua                  -- Entry point: disables built-in plugins, loads all core modules
lua/options.lua           -- Global vim options, highlight groups, yank highlighting
lua/keymaps.lua           -- Keymaps (leader = space), window/tab navigation, buffer mgmt
lua/autocmds.lua          -- Autocmds: restore cursor position, comment continuation, fold setup
lua/usercmds.lua          -- User commands: :PackAdd, :PackDel, :PackUpdate
lua/pack.lua              -- Plugin declarations via vim.pack.add(), mini.starter dashboard,
                          -- lazy.on_keys/on_event bindings for all deferred plugins
lua/lazy.lua              -- Custom lazy-loading primitives: load(), on_event(), on_keys()
lua/plugins/
  lsp.lua                 -- LSP config (nvim-lspconfig + mason), conform.nvim formatter
  treesitter.lua          -- Treesitter setup: deferred parser install, per-buffer attach
  pick.lua                -- mini.pick wrappers: buffer picker, filetype picker
  git.lua                 -- Custom git utilities: hunk preview, blame line, fugitive keymaps
colors/                   -- Catppuccin colorscheme variants (frappe, latte, macchiato, mocha)
nvim-pack-lock.json       -- Lock file for vim.pack managed plugins

Plugin Management

Plugins are declared in lua/pack.lua via vim.pack.add({ urls }, { load = false }) and tracked in nvim-pack-lock.json.

Available commands:

• :PackAdd user/repo — add a new plugin
• :PackDel plugin-name — delete a plugin
• :PackUpdate [plugin-name] — update all or specific plugins

Plugins are loaded lazily via the custom framework in lua/lazy.lua:

• on_event: triggered by autocmd (e.g., InsertEnter, BufReadPost, VimEnter)
• on_keys: triggered by keymap press (e.g., <leader>ff, <leader>gg)
• load: manual loading checked by _loaded flag

Key lazy-loading points in pack.lua:

• mini.completion / mini.snippets — InsertEnter
• mini.diff / mini.surround — BufReadPost
• treesitter / lsp — VimEnter
• mini.pick / mini.extra — key trigger (<leader>ff, etc.)
• vim-fugitive — key trigger (<leader>gg)
• conform.nvim — BufWritePre

LSP and Formatting

• LSP: nvim-lspconfig + mason. Enabled servers: html, cssls, gopls, vtsls, rust_analyzer, lua_ls, taplo, svelte, dartls, kotlin_lsp.
• Formatting: conform.nvim with format-on-save. Formatters by filetype:
  • lua → stylua
  • go → gofumpt, goimports
  • js/ts/json/css/html/md → biome (if biome.json found) or prettier
  • toml → taplo
• Toggle autoformat per-buffer: vim.b[bufnr].autoformat = false
• Toggle autoformat globally: vim.g.autoformat = false

Treesitter

Configured in lua/plugins/treesitter.lua. Parsers are installed lazily via vim.defer_fn to avoid blocking startup. Treesitter highlighting is attached per-buffer on FileType via vim.treesitter.start().

Key Leader Bindings (Space)

Common bindings defined across files:

File pickers (mini.pick):

• <leader>ff — find files
• <leader>fw — live grep
• <leader>fa — find all files (including hidden/ignored)
• <leader>fh — search help tags
• <leader>fo — recent files
• <leader>fz — current buffer lines
• <leader>sk — search keymaps
• <leader><leader> — buffer picker (supports <C-d> to delete)
• <leader>ft — filetype picker

File browser (mini.files):

• - — open at current file's directory
• _ — open at project root (git root)

Git:

• <leader>gg — fugitive (fullscreen new tab)
• <leader>gd — git diff vertical split
• <leader>ghp — preview current hunk
• <leader>ghb — blame current line
• <leader>gB — blame entire file
• <leader>gD — file git history
• <leader>sr — search and replace (grug-far)

LSP & diagnostics:

• gd / gh — go to definition / hover
• <leader>ca — code action
• <leader>fm — format buffer
• df — show line diagnostic float
• <leader>ds — diagnostic location list
• ]d / [d — next / prev diagnostic
• ]e / [e — next / prev error
• ]w / [w — next / prev warning

Buffer management:

• <leader>x — close current buffer
• <leader>bn — new buffer
• <leader>bo — close other buffers

Editing & search:

• <leader>ss — global replace word under cursor
• <leader>u — undotree (builtin)
• <Esc> — clear search highlight

Window & tab:

• <C-h/j/k/l> — navigate between windows
• <leader>tc/tn/]/[ — tab close / new / next / prev

Terminal:

• <leader>tt — open new terminal
• <C-x> — exit terminal mode to normal mode

File operations:

• <C-s> — save file
• <C-c> — copy entire file to clipboard
• <leader>yp — copy relative file path
• <leader>yP — copy absolute file path

Development / Validation

Since this is a Neovim config, there is no traditional build or test suite.

Validate configuration changes:

# Syntax check init.lua
nvim --headless -c 'lua dofile("init.lua")' -c 'qa!'

# Check for Lua syntax errors in a specific module
nvim --headless -c 'lua require("pack")' -c 'qa!'

# Runtime health check
nvim --headless -c 'checkhealth' -c 'qa!'

Check startup time after changes:

nvim --startuptime /tmp/startup.log +q

Important Design Patterns

1. Startup performance is a priority. Heavy modules (treesitter, LSP, mason) are deferred to VimEnter or later. Clipboard is set via vim.schedule() to avoid provider detection blocking.

2. Custom lazy-loading in lua/lazy.lua. Do not confuse with the lazy.nvim plugin manager — this is a ~35-line custom module. When adding new plugins that should load lazily, use lazy.on_event() or lazy.on_keys().

3. mini.nvim monorepo. Most UI/functionality comes from the single mini.nvim package (starter, pick, extra, files, icons, notify, cmdline, completion, snippets, diff, surround). These are configured individually in pack.lua or on-demand.

4. Colorscheme. The active colorscheme is catppuccin-mocha, defined in colors/catppuccin-mocha.lua. The moonflyTransparent variable is still set in init.lua for compatibility but the moonfly theme was removed.