system/nix/progs/nvim/lua/plugins.lua

-------------------------------------------------------------------------------
--
-- NerdTree
--

vim.g.NERDTreeDirArrowExpandable = '▸'
vim.g.NERDTreeDirArrowCollapsible = '▾'

vim.g.NERDTreeMiniamlUI = 1
vim.g.NERDTreeDirArrows = 1

-- Nerdtree git plugin symbols
vim.g.NERDTreeGitStatusIndicatorMapCustom = {
  Modified  = 'ᵐ',
  Staged    = 'ˢ',
  Untracked = 'ᵘ',
  Renamed   = 'ʳ',
  Unmerged  = 'ᶴ',
  Deleted   = 'ˣ',
  Dirty     = '˜',
  Clean     = 'ᵅ',
  Unknown   = '?',
}

vim.keymap.set('n', '<leader>nt', ':NERDTreeToggle<CR>')
vim.keymap.set('n', '<leader>nf', ':NERDTreeFind<CR>')

-------------------------------------------------------------------------------
--
-- NeoFormat
--
vim.g.neoformat_try_node_exe = 1
vim.g.neoformat_only_msg_on_error = 1
vim.g.neoformat_enabled_markdown = {"denofmt"}

vim.cmd [[
aug fmt
  au!
  au BufWritePre * try | undojoin | Neoformat | catch /E790/ | Neoformat | endtry
aug END
]]
--[[ TODO: need to investigate how implement it in lua
local format_augroup = vim.api.nvim_create_augroup('format', {})
vim.api.nvim_create_autocmd('BufWritePre', {
  pattern = '*',
  group = spell_check_augroup,
  callback = function ()
    local ok, _ = pcall(function ()
      vim.fn.undojoin();
      vim.cmd'NeoFormat';
    end)

    if not ok then vim.cmd'NeoFormat' end
  end
})
]]--

-------------------------------------------------------------------------------
--
-- GitGutter
--
vim.g.gitgutter_sign_priority = 1
vim.g.gitgutter_set_sign_backgrounds = 0
vim.g.gitgutter_map_keys = 0

vim.keymap.set('n', '<leader>ghp', ':GitGutterPreviewHunk<CR>')


-------------------------------------------------------------------------------
--
-- TreeSitter
--
require'nvim-treesitter.configs'.setup {
  -- A list of parser names, or "all"
  ensure_installed = {
    "typescript",
    "tsx",
    "rust",
    "haskell",
  },

  -- Install parsers synchronously (only applied to `ensure_installed`)
  sync_install = false,

  highlight = {
    enable = true,
  },

  indent = {
    enable = true,
  },
}