React-router: Use new getDerivedStateFromProps lifecycle method in React 16.3

[ricardobrandao]

As of react 16.3, componentWillReceiveProps has been marked as unsafe and should be replaced by getDerivedStateFromProps. RFC can be found here.

[timdorr]

We're aware of it, but some of this stuff is still being worked out. Those functions will not be changed in 16.3 from what I understand, but I may be out of date from my last meeting with the React team. Until there is actually a change in place to test against (16.3.0-alpha.0 doesn't have this), this is premature.

[ricardobrandao]

getDerivedStateFromProps has already landed and it is available on 16.3.0-alpha.0. It seems that they will only remove deprecated lifecycle methods on v17 but will start warning about deprecation on v16.4.

[timdorr]

The deprecation warnings have not, though. Things aren't in place for us to test against yet. And we're not testing this library against alpha versions.