vim.keymap.set('n', '<Leader>r', '<Plug>(Luadev-Run)', opts)
vim.keymap.set('v', '<Leader>r', '<Plug>(Luadev-Run)', opts)

vim.defer_fn(function()
  -- set buffer to lua
  vim.bo.filetype = 'lua'
  vim.fn.append(0, '-- <Leader>r to run a block of code')
  vim.fn.append(1, 'print("hello")')
  -- open output console
  vim.cmd('Luadev')
end, 100)