看了一下官方博客的内容
这一段不太懂：
The props object is now frozen, so mutating props after creating a component element is no longer supported. In most cases, React.cloneElement should be used instead. This change makes your components easier to reason about and enables the compiler optimizations mentioned above.
所以组件里面的这两个hook是没用了吗？
componentWillReceiveProps(
object nextProps
)
componentWillUpdate(
object nextProps, object nextState
)