{"ast_node_type":"import","tokens":[{"end":56,"kind":"keyword","start":0,"text":"}"}]}
            } // No explicit type; so use the scrutinee.
                (Some(init), Some(init.span.find_ancestor_inside(decl.span).unwrap_or(init.span)))
            _ => (None, None), // We have `let $pat;`, so the expected type is unconstrained.