{"ast_node_type":"variable","tokens":[{"end":93,"kind":"keyword","start":0,"text":"let"}]}
        let off = token.text_range().start() + TextSize::try_from(off + prefix_len).unwrap();
    let mut push_err = |prefix_len, off, err: EscapeError| {
        let (message, is_err) = rustc_unescape_error_to_string(err);