function config_cmp()
  local cmp = require'cmp'

  cmp.setup({
    snippet = {
      expand = function(args)
        require('luasnip').lsp_expand(args.body)
      end,
    },
    window = {
      -- completion = cmp.config.window.bordered(),
      -- documentation = cmp.config.window.bordered(),
    },
    mapping = cmp.mapping.preset.insert({
      ['<C-b>'] = cmp.mapping.scroll_docs(-4),
      ['<C-f>'] = cmp.mapping.scroll_docs(4),
      ['<C-Space>'] = cmp.mapping.complete(),
      ['<C-e>'] = cmp.mapping.abort(),
      ['<CR>'] = cmp.mapping.confirm({ select = true }),
    }),
    sources = cmp.config.sources({
      { name = 'nvim_lsp' },
      { name = 'luasnip' },
    }, {
      { name = 'buffer' },
    })
  })

  cmp.setup.cmdline({ '/', '?' }, {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
      { name = 'buffer' }
    }
  })

  cmp.setup.cmdline(':', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = cmp.config.sources({
      { name = 'path' }
    }, {
      { name = 'cmdline' }
    }),
    matching = { disallow_symbol_nonprefix_matching = false }
  })

--  local capabilities = require('cmp_nvim_lsp').default_capabilities()
--  vim.lsp.config('<YOUR_LSP_SERVER>', {
--    capabilities = capabilities
--  })
--  vim.lsp.enable('<YOUR_LSP_SERVER>')

end

return {
    config_cmp
}