return {
  'hrsh7th/nvim-cmp',
  event = "VeryLazy",
  dependencies = {
    'hrsh7th/cmp-nvim-lsp',
    'hrsh7th/cmp-buffer',
    'hrsh7th/cmp-path',
    'hrsh7th/cmp-cmdline',
    'L3MON4D3/LuaSnip',
    'saadparwaiz1/cmp_luasnip',
  },
  config = function()
    -- Set up nvim-cmp.
    local has_words_before = function()
      local line, col = unpack(vim.api.nvim_win_get_cursor(0))
      return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
    end
    local cmp = require'cmp'
    local luasnip = require('luasnip')

    cmp.setup({
      snippet = {
        -- REQUIRED - you must specify a snippet engine
        expand = function(args)
          luasnip.lsp_expand(args.body) -- For `luasnip` users.
        end,
      },
      window = {
        completion = cmp.config.window.bordered(),
        documentation = cmp.config.window.bordered(),
      },
      mapping = cmp.mapping.preset.insert({
        ["<Tab>"] = cmp.mapping(function(fallback)
          if cmp.visible() then
            cmp.select_next_item()
          elseif luasnip.expand_or_jumpable() then
            luasnip.expand_or_jump()
          elseif has_words_before() then
            cmp.complete()
          else
            fallback()
          end
        end, { "i", "s" }),
        ["<S-Tab>"] = cmp.mapping(function(fallback)
          if cmp.visible() then
            cmp.select_prev_item()
          elseif luasnip.jumpable(-1) then
            luasnip.jump(-1)
          else
            fallback()
          end
        end, { "i", "s" }),
        ['<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.
      }),
      sources = cmp.config.sources({
        { name = 'nvim_lsp' },
        { name = 'luasnip' }, -- For luasnip users.
      }, {
          { name = 'buffer' },
        })
    })

    -- Set configuration for specific filetype.
    cmp.setup.filetype('gitcommit', {
      sources = cmp.config.sources({
        { name = 'cmp_git' }, -- You can specify the `cmp_git` source if you were installed it.
      }, {
          { 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' }
        })
    })
  end,
}