{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
            let local_id = self.result.locals.alloc(Local { ty });
        self.result.param_locals.extend(params.clone().map(|(it, ty)| {
            self.drop_scopes.last_mut().unwrap().locals.push(local_id);