[prop-types] Allow object as type for root.Root (Fixes #1446)

[JonnyBurger]

Summary

Removes two warnings you get in React Native 0.56.
now uses React.forwardRef() (exact commit in react-native 0.56: facebook/react-native@3e534b9)

Therefore:

import {View} from 'react-native';
console.log(typeof View) // 'object'

This PR adds support for that.

Result

Two warnings disappear.
Fixes #1446

[algobot]

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[Haroenv]

Thanks, seems to be a long list now, I wonder if what we're using this for satisfies PropTypes.element; Not sure if that includes the string

[JonnyBurger]

Tried it out quickly and it seems like PropTypes.element is not satisfied with View.

[Haroenv]

This looks correct, but leaving it up to @samouss (currently on holiday) to validate and merge. Thanks a lot!

[samouss]

Thanks for the fix, I will merge it as it is. There is an ongoing discussion to support forwardRef directly in the PropTypes package. Will follow how the discussion evolve and we might revert the changes depending on the outcome. Thanks again!

[JonnyBurger]

Thanks a lot!
When can I expect this to be released?

[samouss]

Probably beginning of next week.