lualine.nvim/lua/lualine/extensions/nerdtree.lua

-- Copyright (c) 2020-2021 hoob3rt
-- MIT license, see LICENSE for more details.
local function get_short_cwd() return vim.fn.fnamemodify(vim.fn.getcwd(), ':~') end
local empty = {function() return ' ' end, left_padding=0, right_padding=0}

local M = {}

M.sections = {
  lualine_a = {get_short_cwd},
  lualine_c = {empty}
}

M.filetypes = {'nerdtree'}

return M