neovim-config/lua/user/nvimtree.lua

local status_ok, nvim_tree = pcall(require, "nvim-tree")
if not status_ok then
	return
end

local config_status_ok, nvim_tree_config = pcall(require, "nvim-tree.config")
if not config_status_ok then
	return
end

local tree_cb = nvim_tree_config.nvim_tree_callback
vim.api.nvim_create_autocmd("BufEnter", {
	nested = true,
	callback = function()
		if #vim.api.nvim_list_wins() == 1 and vim.api.nvim_buf_get_name(0):match("NvimTree_") ~= nil then
			vim.cmd("quit")
		end
	end,
})

nvim_tree.setup({
	disable_netrw = true,
	hijack_netrw = true,
	open_on_setup = false,
	ignore_ft_on_setup = {
		"alpha",
	},
	open_on_tab = true,
	hijack_cursor = true,
	update_cwd = true,
	diagnostics = {
		enable = true,
		icons = {
			hint = "",
			info = "",
			warning = "",
			error = "",
		},
	},
	update_focused_file = {
		enable = true,
		update_cwd = true,
		ignore_list = {},
	},
	git = {
		enable = true,
		ignore = false,
		timeout = 500,
	},
	view = {
		width = 30,
		height = 30,
		hide_root_folder = false,
		side = "left",
		mappings = {
			custom_only = false,
			list = {
				{ key = { "l", "<CR>", "o" }, cb = tree_cb("edit") },
				{ key = "h", cb = tree_cb("close_node") },
				{ key = "v", cb = tree_cb("vsplit") },
			},
		},
		number = false,
		relativenumber = false,
	},
	actions = {
		open_file = {
			quit_on_open = false,
			window_picker = {
				enable = false,
			},
		},
	},
	renderer = {
		icons = {
			glyphs = {
				default = "",
				symlink = "",
				git = {
					unstaged = "",
					staged = "S",
					unmerged = "",
					renamed = "➜",
					deleted = "",
					untracked = "U",
					ignored = "◌",
				},
				folder = {
					default = "",
					open = "",
					empty = "",
					empty_open = "",
					symlink = "",
				},
			},
		},
	},
	filesystem_watchers = {
		enable = true,
		interval = 100,
	},
})