{"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"///"}]}
    /// For example, `let 1 = 1 && (expr && expr)` is allowed
    ///
    /// but `(let 1 = 1 && (let 1 = 1 && (let 1 = 1))) && let a = 1` is not