creky

还有种情况，如果传的参数是Map类型，还会执行N次（N>5）,看源码是Map继承自多个类的子类，然后符合这些类的响应，自然就执行多次了，解决办法是只传基础类型数据，int，boolean，string及数组类型，或者改源码

> This is a request to add support for null safety to this package. See the [migration guide](https://dart.dev/null-safety/migration-guide) for details about enabling null safety. I had upgraded this to null-safety...

> 已提交pull request，等待合并~~~