sql mode can not fold

[superw-123]

import {Controlled as CodeMirror} from 'react-codemirror2';

const [instance, setInstance] = useState(null); <CodeMirror editorDidMount={editor => setInstance(editor)} value={'select * from tablea'} options={{ mode: 'text/sql', foldGutter: true, gutters: [ 'CodeMirror-linenumbers', 'CodeMirror-foldgutter', 'CodeMirror-lint-markers', ], }} />