return {
  'nvim-tree/nvim-tree.lua',
  version = '*',
  lazy = false,
  dependencies = {
    'nvim-tree/nvim-web-devicons',
  },
  config = function()
    local HEIGHT_RATIO = 0.8
    local WIDTH_RATIO = 0.5
    require('nvim-tree').setup {
      view = {
        float = {
          enable = true,
          open_win_config = function()
            local screen_w = vim.opt.columns:get()
            local screen_h = vim.opt.lines:get() - vim.opt.cmdheight:get()
            local window_w = screen_w * WIDTH_RATIO
            local window_h = screen_h * HEIGHT_RATIO
            local window_w_int = math.floor(window_w)
            local window_h_int = math.floor(window_h)
            local center_x = (screen_w - window_w) / 2
            local center_y = ((vim.opt.lines:get() - window_h) / 2) - vim.opt.cmdheight:get()
            return {
              border = 'rounded',
              relative = 'editor',
              row = center_y,
              col = center_x,
              width = window_w_int,
              height = window_h_int,
            }
          end,
        },
        width = function()
          return math.floor(vim.opt.columns:get() * WIDTH_RATIO)
        end,
      },
    }
  end,
  opts = function()
    local mappings = { { '<leader>e', '<cmd>NvimTreeOpen<CR>', desc = 'File [E]xplorer' } }
    require('which-key').add(mappings)
  end,
}