return {
  "nvim-treesitter/nvim-treesitter",
  branch = "main",
  build = ":TSUpdate",
  config = function()
    local parsers = {
      "lua",
      "vim",
      "vimdoc",
      "query",
      "python",
      "bash",
      "yaml",
      "hcl",
      "terraform",
      "html",
      "css",
      "javascript",
      "typescript",
      "tsx",
      "json",
      "markdown",
      "markdown_inline",
    }

    -- The `main` branch shells out to the `tree-sitter` CLI to build every
    -- parser. Without it every single parser fails the same way, which
    -- floods :messages with one error per parser on every startup — check
    -- once up front and give a single, actionable warning instead.
    if vim.fn.executable("tree-sitter") == 0 then
      vim.notify(
        "nvim-treesitter: 'tree-sitter' CLI not found on PATH, parsers "
          .. "won't build (e.g. `brew install tree-sitter-cli` or "
          .. "`npm install -g tree-sitter-cli`), then :TSUpdate.",
        vim.log.levels.WARN
      )
    else
      local ok, err = pcall(function()
        require("nvim-treesitter").install(parsers)
      end)
      if not ok then
        vim.notify("nvim-treesitter: parser install failed: " .. tostring(err), vim.log.levels.WARN)
      end
    end

    -- Enable highlighting for any buffer whose filetype has an installed
    -- parser; vim.treesitter.start() is a no-op (caught by pcall) otherwise.
    vim.api.nvim_create_autocmd("FileType", {
      pattern = "*",
      callback = function()
        pcall(vim.treesitter.start)
      end,
    })
  end,
}