return {
	"nvim-tree/nvim-tree.lua",
	lazy = false,
	dependencies = {
		"nvim-tree/nvim-web-devicons",
	},
	opts = function()
		return {
			sort = {
				sorter = "case_sensitive",
			},
			view = {
				-- width = getWidth(),
				float = {
					enable = true,
					open_win_config = function()
						local cols = vim.api.nvim_get_option("columns")
						local rows = vim.api.nvim_get_option("lines")
						local width = math.floor(cols / 2)
						local height = math.floor(rows / 1.2)
						return {
							relative = "editor",
							row = math.floor(rows / 10),
							col = math.floor(cols / 4),
							width = width,
							height = height,
							border = "rounded",
						}
					end,
				},
			},
			renderer = {
				group_empty = true,
				indent_width = 3,
				icons = {
					glyphs = {
						git = {
							unstaged = "",
						},
					},
				},
			},
			filters = {
				dotfiles = false,
				git_ignored = false,
				exclude = { ".DS_Store" },
			},
			actions = {
				open_file = {
					quit_on_open = true,
					window_picker = {
						enable = false,
					},
				},
			},
			on_attach = function(bufnr)
				-- https://github.com/nvim-tree/nvim-tree.lua/wiki/Recipes#modify-you-on_attach-function-to-have-ability-to-operate-multiple-files-at-once
				local api = require("nvim-tree.api")
				local opts = function(desc)
					return { desc = "nvim-tree: " .. desc, buffer = bufnr, noremap = true, silent = true, nowait = true }
				end
				-- mark operation
				local mark_move_j = function()
					api.marks.toggle()
					vim.cmd("norm j")
				end
				local mark_move_k = function()
					api.marks.toggle()
					vim.cmd("norm k")
				end

				-- marked files operation
				local mark_remove = function()
					local marks = api.marks.list()
					if #marks == 0 then
						table.insert(marks, api.tree.get_node_under_cursor())
					end
					for _, node in ipairs(marks) do
						api.fs.remove(node)
					end
					api.marks.clear()
					api.tree.reload()
				end

				local mark_copy = function()
					local marks = api.marks.list()
					if #marks == 0 then
						table.insert(marks, api.tree.get_node_under_cursor())
					end
					for _, node in pairs(marks) do
						api.fs.copy.node(node)
					end
					api.marks.clear()
					api.tree.reload()
				end

				local mark_cut = function()
					local marks = api.marks.list()
					if #marks == 0 then
						table.insert(marks, api.tree.get_node_under_cursor())
					end
					for _, node in pairs(marks) do
						api.fs.cut(node)
					end
					api.marks.clear()
					api.tree.reload()
				end

				local mark_move_to_cursor = function()
					local marks = api.marks.list()
					if #marks == 0 then
						table.insert(marks, api.tree.get_node_under_cursor())
					end
					for _, node in pairs(marks) do
						api.fs.cut(node)
					end
					api.marks.clear()
					api.fs.paste()
					api.tree.reload()
				end

				local mark_copy_to_cursor = function()
					local marks = api.marks.list()
					if #marks == 0 then
						table.insert(marks, api.tree.get_node_under_cursor())
					end
					for _, node in pairs(marks) do
						api.fs.copy.node(node)
					end
					api.marks.clear()
					api.fs.paste()
					api.tree.reload()
				end

				vim.keymap.set("n", "J", mark_move_j, opts("Toggle Bookmark Down"))
				vim.keymap.set("n", "K", mark_move_k, opts("Toggle Bookmark Up"))

				vim.keymap.set("n", "x", mark_cut, opts("Cut File(s)"))
				vim.keymap.set("n", "d", mark_remove, opts("Remove File(s)"))
				vim.keymap.set("n", "y", mark_copy, opts("Copy File(s)"))

				vim.keymap.set("n", "<leader>mv", mark_move_to_cursor, opts("Move Bookmarked"))
				vim.keymap.set("n", "<leader>mc", mark_copy_to_cursor, opts("Copy Bookmarked"))
				vim.keymap.set("n", "M", api.marks.clear, opts("Clear Bookmarks"))

				-- https://github.com/nvim-tree/nvim-tree.lua/wiki/Recipes#refactoring-of-on_attach-generated-code
				vim.keymap.set("n", "q", api.tree.close, opts("Close"))
				vim.keymap.set("n", "<esc>", api.tree.close, opts("Close"))
				vim.keymap.set("n", "<leader>o", api.tree.close, opts("Close"))
				vim.keymap.set("n", "<CR>", api.node.open.edit, opts("Open"))
				vim.keymap.set("n", "l", api.node.open.edit, opts("Open"))
				vim.keymap.set("n", "<C-v>", api.node.open.vertical, opts("Open in vertical split"))
				vim.keymap.set("n", "<C-x>", api.node.open.horizontal, opts("Open in horizontal split"))
				vim.keymap.set("n", "h", api.node.navigate.parent_close, opts("Close Directory"))
				vim.keymap.set("n", "r", api.fs.rename, opts("Rename"))
				vim.keymap.set("n", "a", api.fs.create, opts("Create"))
				vim.keymap.set("n", "p", api.fs.paste, opts("Paste"))
				vim.keymap.set("n", "R", api.tree.reload, opts("Refresh"))
				vim.keymap.set("n", "m", api.marks.toggle, opts("Toggle Bookmark"))

				vim.keymap.set("n", "<leader>c", api.fs.copy.absolute_path, opts("Copy Path to Clipboard"))

				vim.keymap.set("n", "h", api.node.navigate.parent_close, opts("Close Directory"))

				vim.keymap.set("n", "?", api.tree.toggle_help, opts("Help"))
			end,
		}
	end,
	keys = {
		{ "<leader>e", "<cmd>NvimTreeToggle<cr>", desc = "Open file browser" },
		{ "<leader>o", "<cmd>NvimTreeFindFile<cr>", desc = "Open file browser at current buffer" },
	},
}