React 19 PropTypes Deprecation - Future Strategy

[mqklin]

Will this library continue to support PropTypes validation? If yes, in which way?
I'm asking because I don't plan to move to TypeScript, so my only option for now is to write a custom babel-plugin which will call prop-types/checkPropTypes'.

[ljharb]

Given that React >= 19 won't actually run propTypes validators, I'm not sure what continued support here looks like. iow, I'll of course continue to fix bugs, but unless someone comes up with a good approach (perhaps, your babel plugin) to keep using PropTypes with components, I expect usage of packages like this to fade.

[mqklin]

I've just faced another issue: latest prop-types relies on old react-is version, which does not support Symbol.for(react.transitional.element) as a $$typeof. Means that using PropTypes.element also needs to be transformed somehow, as prop-types is archived and cannot be upgraded.
I (I mean ChatGPT) wrote a simple plugin that allows to run _checkPropTypes with forbidExtraProps (maybe it's enough for other custom validators too) .
But seems like this $$typeof issue is in another dimension. I think I will write my own utils/reactElementPropType.js prop type, which will just proxy to the latest reactIs.isElement version. Maybe adding this updated element to this lib could be named as a "continued support".