use {
    'kyazdani42/nvim-tree.lua',
    requires = {
      'kyazdani42/nvim-web-devicons', -- optional, for file icon
    },
    config = function() require'nvim-tree'.setup {} end
}

-- init.lua

-- following options are the default
-- each of these are documented in `:help nvim-tree.OPTION_NAME`
require'nvim-tree'.setup {
  disable_netrw        = false,
  hijack_netrw         = true,
  open_on_setup        = false,
  ignore_buffer_on_setup = false,
  ignore_ft_on_setup   = {},
  auto_close           = false,
  auto_reload_on_write = true,
  open_on_tab          = false,
  hijack_cursor        = false,
  update_cwd           = false,
  hijack_unnamed_buffer_when_opening = false,
  hijack_directories   = {
    enable = true,
    auto_open = true,
  },
  diagnostics = {
    enable = false,
    icons = {
      hint = "",
      info = "",
      warning = "",
      error = "",
    }
  },
  update_focused_file = {
    enable      = false,
    update_cwd  = false,
    ignore_list = {}
  },
  system_open = {
    cmd  = nil,
    args = {}
  },
  filters = {
    dotfiles = false,
    custom = {}
  },
  git = {
    enable = true,
    ignore = true,
    timeout = 500,
  },
  view = {
    width = 30,
    height = 30,
    hide_root_folder = false,
    side = 'left',
    preserve_window_proportions = false,
    mappings = {
      custom_only = false,
      list = {}
    },
    number = false,
    relativenumber = false,
    signcolumn = "yes"
  },
  trash = {
    cmd = "trash",
    require_confirm = true
  },
  actions = {
    change_dir = {
      enable = true,
      global = false,
    },
    open_file = {
      quit_on_open = false,
      resize_window = false,
      window_picker = {
        enable = true,
        chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890",
        exclude = {
          filetype = { "notify", "packer", "qf", "diff", "fugitive", "fugitiveblame", },
          buftype  = { "nofile", "terminal", "help", },
        }
      }
    }
  }
}

-- key can be either a string or a table of string (lhs)
-- action is the name of the action, set to `""` to remove default action
-- action_cb is the function that will be called, it receives the node as a parameter. Optional for default actions
-- mode is normal by default

local tree_cb = require'nvim-tree.config'.nvim_tree_callback

local function print_node_path(node) {
  print(node.absolute_path)
}

local list = {
  { key = {"<CR>", "o" }, action = "edit", mode = "n"},
  { key = "p", action = "print_path", action_cb = print_node_path },
  { key = "s", cb = tree_cb("vsplit") }, --tree_cb and the cb property are deprecated
  { key = "<2-RightMouse>", action = "" }, -- will remove default cd action
}

-- default mappings
local list = {
  { key = {"<CR>", "o", "<2-LeftMouse>"}, action = "edit" },
  { key = "<C-e>",                        action = "edit_in_place" },
  { key = {"O"},                          action = "edit_no_picker" },
  { key = {"<2-RightMouse>", "<C-]>"},    action = "cd" },
  { key = "<C-v>",                        action = "vsplit" },
  { key = "<C-x>",                        action = "split" },
  { key = "<C-t>",                        action = "tabnew" },
  { key = "<",                            action = "prev_sibling" },
  { key = ">",                            action = "next_sibling" },
  { key = "P",                            action = "parent_node" },
  { key = "<BS>",                         action = "close_node" },
  { key = "<Tab>",                        action = "preview" },
  { key = "K",                            action = "first_sibling" },
  { key = "J",                            action = "last_sibling" },
  { key = "I",                            action = "toggle_ignored" },
  { key = "H",                            action = "toggle_dotfiles" },
  { key = "R",                            action = "refresh" },
  { key = "a",                            action = "create" },
  { key = "d",                            action = "remove" },
  { key = "D",                            action = "trash" },
  { key = "r",                            action = "rename" },
  { key = "<C-r>",                        action = "full_rename" },
  { key = "x",                            action = "cut" },
  { key = "c",                            action = "copy" },
  { key = "p",                            action = "paste" },
  { key = "y",                            action = "copy_name" },
  { key = "Y",                            action = "copy_path" },
  { key = "gy",                           action = "copy_absolute_path" },
  { key = "[c",                           action = "prev_git_item" },
  { key = "]c",                           action = "next_git_item" },
  { key = "-",                            action = "dir_up" },
  { key = "s",                            action = "system_open" },
  { key = "q",                            action = "close" },
  { key = "g?",                           action = "toggle_help" },
  { key = "W",                            action = "collapse_all" },
  { key = "S",                            action = "search_node" },
  { key = ".",                            action = "run_file_command" }
}