{"ast_node_type":"variable","tokens":[{"end":83,"kind":"keyword","start":0,"text":"let"}]}
        let span = span.with_lo(span.lo() + BytePos(ws_pos as u32)).shrink_to_lo();
    {
        Some(AmpMutSugg { has_sugg: true, span, suggestion: " mut".to_owned(), additional: None })