Neovim 0.11 built-in LSP autocompletion

init.lua

-- Built-in autocompletion
local lsp_au_group = vim.api.nvim_create_augroup('lsp_au_group', {clear = true})
vim.api.nvim_create_autocmd({'LspAttach'}, {
    callback = function()
        local clients = vim.lsp.get_clients()
        for _, client in ipairs(clients) do
            local id = client.id
            vim.lsp.completion.enable(true, id, 0, {autotrigger = true})
        end
    end,
    group = lsp_au_group,
})

require("nvim-autopairs").setup {
    map_bs = false,
}

init.vim

inoremap <silent> <expr> <tab> pumvisible() ? "\<C-n>" : "\<tab>"
inoremap <silent> <expr> <S-tab> pumvisible() ? "\<C-p>" : "\<S-tab>"
inoremap <silent> <C-space> <C-x><C-o>
inoremap <silent> <expr> <C-j> pumvisible() ? "\<C-y>" : "\<C-j>"
inoremap <silent> <expr> <bs> pumvisible() ? "\<bs>\<c-x>\<c-o>"
\                                          : v:lua.require('nvim-autopairs').autopairs_bs()