return {
    {
        "hrsh7th/nvim-cmp",
        event = "VeryLazy",
        dependencies = {
            -- sources
            { "hrsh7th/cmp-nvim-lsp" },
            { "hrsh7th/cmp-nvim-lua" },
            { "hrsh7th/cmp-buffer" },
            { "hrsh7th/cmp-path" },
            { "hrsh7th/cmp-nvim-lsp-document-symbol" },
            -- snippets
            { "L3MON4D3/LuaSnip" },
            { "saadparwaiz1/cmp_luasnip" },
            { "rafamadriz/friendly-snippets" },
            -- lsp diagnostics
            { "hrsh7th/cmp-nvim-lsp-signature-help" },
            { "onsails/lspkind.nvim" },
        },
        config = function()
            local cmp = require("cmp")
            local lspkind = require("lspkind")
            local luasnip = require("luasnip")

            cmp.setup({
                snippet = {
                    expand = function(args)
                        require("luasnip").lsp_expand(args.body) -- Luasnip expand
                    end,
                },
                window = {
                    completion = { border = "rounded" },
                    documentation = { border = "rounded" },
                },
                mapping = {
                    ["<CR>"] = cmp.mapping(function(fallback)
                        if cmp.visible() then
                            if luasnip.expandable() then
                                luasnip.expand()
                            else
                                cmp.confirm({ select = true })
                            end
                        else
                            fallback()
                        end
                    end),
                    ["<Tab>"] = cmp.mapping(function(fallback)
                        if cmp.visible() then
                            cmp.select_next_item()
                        elseif luasnip.locally_jumpable(1) then
                            luasnip.jump(1)
                        else
                            fallback()
                        end
                    end, { "i", "s" }),
                    ["S-<Tab>"] = cmp.mapping(function(fallback)
                        if cmp.visible() then
                            cmp.select_prev_item()
                        elseif luasnip.locally_jumpable(-1) then
                            luasnip.jump(-1)
                        else
                            fallback()
                        end
                    end, { "i", "s" }),
                },
                sources = cmp.config.sources({
                    { name = "nvim_lsp" },
                    { name = "nvim_lsp_signature_help" },
                    { name = "nvim_lsp_document_symbol" },
                    { name = "nvim_lua" },
                    { name = "luasnip" },
                }, {
                    { name = "buffer" },
                    { name = "path" },
                }),
                formatting = {
                    format = lspkind.cmp_format({
                        mode = "symbol_text",
                        maxwidth = function() return math.floor(0.5 * vim.o.columns) end,
                        ellipsis_char = "...",
                        show_labelDetails = true,
                        before = function(_, vim_item)
                            return vim_item
                        end,
                    }),
                },
            })

            -- Add snippets from Friendly Snippets
            require("luasnip/loaders/from_vscode").lazy_load()
        end,
    },
}