return {
  "hrsh7th/nvim-cmp",
  dependencies = {
    "L3MON4D3/LuaSnip",
    "saadparwaiz1/cmp_luasnip",
    "hrsh7th/cmp-nvim-lsp",
    "hrsh7th/cmp-buffer",
    "hrsh7th/cmp-path",
    "hrsh7th/cmp-cmdline",
  },
  config = function()
    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 = "path" },
      }, {
        { name = "buffer" },
      }),
    })

    -- Set configuration for specific filetype.
    cmp.setup.filetype("gitcommit", {
      sources = cmp.config.sources({
        { name = "git" },   -- You can specify the `git` source if [you were installed it](https://github.com/petertriho/cmp-git).
      }, {
        { 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,
}