React logs a deprecation warning about manually calling a React.PropTypes validation

[wukkuan]

This seems to be universal. I was able to reproduce it just using the react-create-app-example you've provided.

app.js:872 Warning: You are manually calling a React.PropTypes validation function for the messages prop on App. This is deprecated and will not work in the next major version. You may be seeing this warning due to a third-party PropTypes library. See https://fb.me/react-warning-dont-call-proptypes for details.

I did a tiny bit of looking to figure out where this is happening, but I'm not familiar with the codebase. Any ideas as to where I might look?

[busypeoples]

Thanks for letting us know. We'll have a look at it.