- [ ] I have searched the [issues](https://github.com/alibaba/formily/issues) of this repository and believe that this is not a duplicate. ### What problem does this feature solve? 我的schema里存在大量 `{{}}` 的写法，但其实很多都是只是为了读scope里注册的配置，基本只在mount的时候执行 所以希望能支持类似于vue watch的once配置一样，只执行一次，针对具体某个 `{{}}` 来设置，以此来优化性能。 ### What does the proposed API look like? 暂无 <!-- generated by formily-issue-helper. DO NOT REMOVE -->
