config not working

[jaylinwang]

when i setup my plugin at config, not working

for example, config for nvim-tree

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

the nvim-tree cmd not register

[jaylinwang]

it's my fault，it working after packer compiled。 😄