return {
    "hrsh7th/nvim-cmp",         -- Autocompletion plugin
    dependencies = {
        "hrsh7th/cmp-nvim-lsp", -- LSP source for nvim-cmp
        "hrsh7th/cmp-buffer",
        "hrsh7th/cmp-path",
        "saadparwaiz1/cmp_luasnip", -- Snippets source for nvim-cmp
        "L3MON4D3/LuaSnip",         -- Snippets plugin
    },
    config = function()
        require('cmp').setup {
            snippet = {
                expand = function(args)
                    require('luasnip').lsp_expand(args.body)
                end,
            },
            mapping = require('cmp').mapping.preset.insert({
                ['<C-u>'] = require('cmp').mapping.scroll_docs(-4), -- Up
                ['<C-d>'] = require('cmp').mapping.scroll_docs(4),  -- Down
                -- C-b (back) C-f (forward) for snippet placeholder navigation.
                ['<C-Space>'] = require('cmp').mapping.complete(),
                ['<CR>'] = require('cmp').mapping.confirm {
                    behavior = require('cmp').ConfirmBehavior.Replace,
                    select = true,
                },
                ['<Tab>'] = require('cmp').mapping(function(fallback)
                    if require('cmp').visible() then
                        require('cmp').select_next_item()
                    elseif require('luasnip').expand_or_jumpable() then
                        require('luasnip').expand_or_jump()
                    else
                        fallback()
                    end
                end, { 'i', 's' }),
                ['<S-Tab>'] = require('cmp').mapping(function(fallback)
                    if require('cmp').visible() then
                        require('cmp').select_prev_item()
                    elseif require('luasnip').jumpable(-1) then
                        require('luasnip').jump(-1)
                    else
                        fallback()
                    end
                end, { 'i', 's' }),
            }),
            sources = {
                { name = 'nvim_lsp' },
                { name = 'luasnip' },
                { name = 'buffer' },
                { name = 'path' },
            },
        }
    end,
}