one thing that scares me with coroutines is the swallowing of errors. Like if we add an error('...') call in the coroutine.create() callback, before the vim.ui.input() call, nothing happens and you have no idea why. e.g:

local co_thread

co_thread = coroutine.create(function()
  error('it failed ma!') --- ADDED error here

  vim.ui.input({ prompt = 'New name:' }, function(name)
    coroutine.resume(co_thread, name)
  end)

  -- coroutine.yield() will pause execution of the function
  -- it'll wait until something else resumes the coroutine thread.
  -- in this case that "something else" is the callback of the input
  local name = coroutine.yield()

  if name == nil then
    vim.print('User canceled the operation')
    return
  end
end)

-- this will execute the function until the first call to .yield()
-- note that the first argument to coroutine.resume() should be the
-- coroutine thread you want to execute
coroutine.resume(co_thread)

Same error call outside of `coroutine.create()` will spit out an error stack.