return {
  -- Coc LSP
  {
    "neoclide/coc.nvim",
    branch = "release",
    config = function()
      -- Coc config
      vim.g.coc_global_extensions = { "coc-tsserver", "coc-eslint", "coc-prettier", "coc-json", "coc-snippets" }

      local keyset = vim.keymap.set
      -- Autocomplete
      function _G.check_back_space()
        local col = vim.fn.col(".") - 1
        return col == 0 or vim.fn.getline("."):sub(col, col):match("%s") ~= nil
      end

      -- Use Tab for trigger completion with characters ahead and navigate
      -- NOTE: There's always a completion item selected by default, you may want to enable
      -- no select by setting `"suggest.noselect": true` in your configuration file
      -- NOTE: Use command ':verbose imap <tab>' to make sure Tab is not mapped by
      -- other plugins before putting this into your config
      local opts = { silent = true, noremap = true, expr = true, replace_keycodes = false }
      keyset(
        "i",
        "<TAB>",
        'coc#pum#visible() ? coc#pum#next(1) : v:lua.check_back_space() ? "<TAB>" : coc#refresh()',
        opts
      )
      keyset("i", "<S-TAB>", [[coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"]], opts)

      -- Make <CR> to accept selected completion item or notify coc.nvim to format
      -- <C-g>u breaks current undo, please make your own choice
      keyset("i", "<cr>", [[coc#pum#visible() ? coc#pum#confirm() : "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"]], opts)

      -- Use <c-j> to trigger snippets
      keyset("i", "<c-j>", "<Plug>(coc-snippets-expand-jump)")
      -- Use <c-space> to trigger completion
      keyset("i", "<c-space>", "coc#refresh()", { silent = true, expr = true })

      -- Use `[d` and `]d` to navigate diagnostics
      -- Use `:CocDiagnostics` to get all diagnostics of current buffer in location list
      keyset("n", "[d", "<Plug>(coc-diagnostic-prev)", { silent = true })
      keyset("n", "]d", "<Plug>(coc-diagnostic-next)", { silent = true })

      -- GoTo code navigation
      keyset("n", "gd", "<Plug>(coc-definition)", { silent = true })
      keyset("n", "gy", "<Plug>(coc-type-definition)", { silent = true })
      keyset("n", "gi", "<Plug>(coc-implementation)", { silent = true })
      keyset("n", "gr", "<Plug>(coc-references)", { silent = true })

      -- Use K to show documentation in preview window
      function _G.show_docs()
        local cw = vim.fn.expand("<cword>")
        if vim.fn.index({ "vim", "help" }, vim.bo.filetype) >= 0 then
          vim.api.nvim_command("h " .. cw)
        elseif vim.api.nvim_eval("coc#rpc#ready()") then
          vim.fn.CocActionAsync("doHover")
        else
          vim.api.nvim_command("!" .. vim.o.keywordprg .. " " .. cw)
        end
      end

      keyset("n", "K", "<CMD>lua _G.show_docs()<CR>", { silent = true })

      -- Highlight the symbol and its references on a CursorHold event(cursor is idle)
      vim.api.nvim_create_augroup("CocGroup", {})
      vim.api.nvim_create_autocmd("CursorHold", {
        group = "CocGroup",
        command = "silent call CocActionAsync('highlight')",
        desc = "Highlight symbol under cursor on CursorHold",
      })

      -- Symbol renaming
      keyset("n", "<leader>rn", "<Plug>(coc-rename)", { silent = true })

      -- Formatting selected code
      keyset("x", "<leader>f", "<Plug>(coc-format-selected)", { silent = true })
      keyset("n", "<leader>f", "<Plug>(coc-format-selected)", { silent = true })

      -- Setup formatexpr specified filetype(s)
      vim.api.nvim_create_autocmd("FileType", {
        group = "CocGroup",
        pattern = "typescript,json",
        command = "setl formatexpr=CocAction('formatSelected')",
        desc = "Setup formatexpr specified filetype(s).",
      })

      -- Update signature help on jump placeholder
      vim.api.nvim_create_autocmd("User", {
        group = "CocGroup",
        pattern = "CocJumpPlaceholder",
        command = "call CocActionAsync('showSignatureHelp')",
        desc = "Update signature help on jump placeholder",
      })

      -- Apply codeAction to the selected region
      -- Example: `<leader>aap` for current paragraph
      local opts = { silent = true, nowait = true }
      keyset({ "n", "x" }, "<leader>a", "<Plug>(coc-codeaction-selected)", opts)

      -- Remap keys for apply code actions at the cursor position.
      keyset("n", "<leader>ac", "<Plug>(coc-codeaction-cursor)", opts)
      -- Remap keys for apply code actions affect whole buffer.
      keyset("n", "<leader>as", "<Plug>(coc-codeaction-source)", opts)
      -- Remap keys for applying codeActions to the current buffer
      keyset("n", "<leader>ab", "<Plug>(coc-codeaction)", opts)
      -- Apply the most preferred quickfix action on the current line.
      keyset("n", "<leader>qf", "<Plug>(coc-fix-current)", opts)

      -- Remap keys for apply refactor code actions.
      keyset("n", "<leader>re", "<Plug>(coc-codeaction-refactor)", { silent = true })
      keyset({ "n", "x" }, "<leader>r", "<Plug>(coc-codeaction-refactor-selected)", { silent = true })

      -- Run the Code Lens actions on the current line
      keyset("n", "<leader>cl", "<Plug>(coc-codelens-action)", opts)

      -- Map function and class text objects
      -- NOTE: Requires 'textDocument.documentSymbol' support from the language server
      keyset("x", "if", "<Plug>(coc-funcobj-i)", opts)
      keyset("o", "if", "<Plug>(coc-funcobj-i)", opts)
      keyset("x", "af", "<Plug>(coc-funcobj-a)", opts)
      keyset("o", "af", "<Plug>(coc-funcobj-a)", opts)
      keyset("x", "ic", "<Plug>(coc-classobj-i)", opts)
      keyset("o", "ic", "<Plug>(coc-classobj-i)", opts)
      keyset("x", "ac", "<Plug>(coc-classobj-a)", opts)
      keyset("o", "ac", "<Plug>(coc-classobj-a)", opts)

      -- Remap <C-f> and <C-b> to scroll float windows/popups
      ---@diagnostic disable-next-line: redefined-local
      local opts = { silent = true, nowait = true, expr = true }
      keyset("n", "<C-f>", 'coc#float#has_scroll() ? coc#float#scroll(1) : "<C-f>"', opts)
      keyset("n", "<C-b>", 'coc#float#has_scroll() ? coc#float#scroll(0) : "<C-b>"', opts)
      keyset("i", "<C-f>", 'coc#float#has_scroll() ? "<c-r>=coc#float#scroll(1)<cr>" : "<Right>"', opts)
      keyset("i", "<C-b>", 'coc#float#has_scroll() ? "<c-r>=coc#float#scroll(0)<cr>" : "<Left>"', opts)
      keyset("v", "<C-f>", 'coc#float#has_scroll() ? coc#float#scroll(1) : "<C-f>"', opts)
      keyset("v", "<C-b>", 'coc#float#has_scroll() ? coc#float#scroll(0) : "<C-b>"', opts)

      -- Use CTRL-S for selections ranges
      -- Requires 'textDocument/selectionRange' support of language server
      keyset("n", "<C-s>", "<Plug>(coc-range-select)", { silent = true })
      keyset("x", "<C-s>", "<Plug>(coc-range-select)", { silent = true })

      -- Add `:Format` command to format current buffer
      vim.api.nvim_create_user_command("Format", "call CocAction('format')", {})

      -- " Add `:Fold` command to fold current buffer
      vim.api.nvim_create_user_command("Fold", "call CocAction('fold', <f-args>)", { nargs = "?" })

      -- Add `:OR` command for organize imports of the current buffer
      vim.api.nvim_create_user_command("OR", "call CocActionAsync('runCommand', 'editor.action.organizeImport')", {})

      -- Add (Neo)Vim's native statusline support
      -- NOTE: Please see `:h coc-status` for integrations with external plugins that
      -- provide custom statusline: lightline.vim, vim-airline
      vim.opt.statusline:prepend("%{coc#status()}%{get(b:,'coc_current_function','')}")

      -- Mappings for CoCList
      -- code actions and coc stuff
      ---@diagnostic disable-next-line: redefined-local
      local opts = { silent = true, nowait = true }
      -- Show all diagnostics
      keyset("n", "<space>sd", ":<C-u>CocList diagnostics<cr>", opts)
      -- Manage extensions
      keyset("n", "<space>se", ":<C-u>CocList extensions<cr>", opts)
      -- Show commands
      keyset("n", "<space>sc", ":<C-u>CocList commands<cr>", opts)
      -- Find symbol of current document
      keyset("n", "<space>ds", ":<C-u>CocList outline<cr>", opts)
      -- Search workspace symbols
      keyset("n", "<space>ws", ":<C-u>CocList -I symbols<cr>", opts)
      -- Do default action for next item
      keyset("n", "<space>j", ":<C-u>CocNext<cr>", opts)
      -- Do default action for previous item
      keyset("n", "<space>k", ":<C-u>CocPrev<cr>", opts)
      -- Resume latest coc list
      keyset("n", "<space>p", ":<C-u>CocListResume<cr>", opts)
      -- The line beneath this is called `modeline`. See `:help modeline`
    end,
  },
}

