return function()
  require("smart-splits").setup {
    ignored_filetypes = {
      "nofile",
      "quickfix",
      "prompt",
      "neo-tree",
    },
    ignored_buftypes = { "NvimTree", "neo-tree" },
  }

  local keys = require "custom_keys"
  local opttion = { noremap = true, silent = true }

  vim.keymap.set({ "n", "t" }, keys.resize_left, require("smart-splits").resize_left, option)
  vim.keymap.set({ "n", "t" }, keys.resize_down, require("smart-splits").resize_down, option)
  vim.keymap.set({ "n", "t" }, keys.resize_up, require("smart-splits").resize_up, option)
  vim.keymap.set({ "n", "t" }, keys.resize_right, require("smart-splits").resize_right, option)
end