return {
    "nvim-tree/nvim-tree.lua",
    dependencies = {
        "nvim-tree/nvim-web-devicons", -- optional, for file icon
    },
    lazy = false,
    opts = {
        -- open_on_tab = true,
        sync_root_with_cwd = true,
        tab = {
            sync = {
                open = true,
            },
        },
        diagnostics = {
            enable = true,
            show_on_dirs = false,
        },
        renderer = {
            indent_markers = {
                enable = true,
            },
            group_empty = true,
        },
    },
    keys = {
        {
            "<C-n>",
            "<Cmd>NvimTreeFindFileToggle <CR>",
            desc = "Nvimtree Toggle",
        },
        {
            "<Leader>a",
            "<Cmd>NvimTreeFocus <CR>",
            desc = "Nvimtree Focus",
        },
    },
    config = function(_, opts)
        require("nvim-tree").setup(opts)
        local function open_nvim_tree()
            -- open the tree
            require("nvim-tree.api").tree.toggle({ focus = false, find_file = true })
        end
        vim.api.nvim_create_autocmd({ "VimEnter" }, {
            callback = open_nvim_tree,
        })
    end,
}