return {
    {
        "hrsh7th/nvim-cmp",
        event = { "BufReadPost", "BufNewFile" },
        dependencies = {
            {
                "L3MON4D3/LuaSnip",
                version = "v2.*",
                build = "make install_jsregexp",
            },
            "saadparwaiz1/cmp_luasnip",
            "hrsh7th/cmp-nvim-lsp",
            "hrsh7th/cmp-buffer",
            "hrsh7th/cmp-path",
            "rafamadriz/friendly-snippets",
        },
        config = function()
            local cmp = require("cmp")
            local luasnip = require("luasnip")

            -- load snippets
            require("luasnip.loaders.from_vscode").lazy_load()

            cmp.setup({
                snippet = {
                    expand = function(args)
                        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 }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
                }),
                -- autocompletion sources
                sources = cmp.config.sources({
                    { name = "nvim_lsp" },                    -- lsp
                    { name = "buffer",  max_item_count = 5 }, -- text within current buffer
                    { name = "path",    max_item_count = 3 }, -- file system paths
                    { name = "luasnip", max_item_count = 3 }, -- snippets
                }),
            })
        end,
    },
}
