return {
  {
    "hrsh7th/cmp-buffer",
    name = "cmp-buffer",
    priority = 1,
  },
  {
    "hrsh7th/cmp-path",
    name = "cmp-path",
    priority = 1,
  },
  {
    "hrsh7th/cmp-cmdline",
    name = "cmp-cmdline",
    priority = 1,
  },
  {
    "hrsh7th/cmp-vsnip",
    name = "cmp-vsnip",
    priority = 1,
  },
  {
    "hrsh7th/vim-vsnip",
    name = "vim-vsnip",
    priority = 1,
  },
  {
    "hrsh7th/cmp-nvim-lsp",
    name = "cmp-nvim-lsp",
    priority = 1,
  },
  {
    "hrsh7th/nvim-cmp",
    name = "nvim-cmp",
    priority = 2,
    opts = function(_, opts)
      local cmp = require("cmp")

      opts.snippet = {
        expand = function(args)
          vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
        end,
      }
      opts.window = {
        -- completion = cmp.config.window.bordered(),
        -- documentation = cmp.config.window.bordered(),
      }
      opts.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 }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
      })
      opts.sources = cmp.config.sources({
        { name = 'nvim_lsp' },
        { name = 'vsnip' },
      }, {
        { name = 'buffer' },
      })

      -- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
      cmp.setup.cmdline({ '/', '?' }, {
        mapping = cmp.mapping.preset.cmdline(),
        sources = {
          { name = 'buffer' }
        }
      })

      -- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
      cmp.setup.cmdline(':', {
        mapping = cmp.mapping.preset.cmdline(),
        sources = cmp.config.sources({
          { name = 'path' }
        }, {
          { name = 'cmdline' }
        }),
        matching = { disallow_symbol_nonprefix_matching = false }
      })
    end,
  }
}