Props validation errors when using polyfills

[Hunsu]

Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

Environment:
OS: Linux 4.13
Node: 8.1.4
Yarn: 1.0.1
npm: 4.6.1
Watchman: 4.9.0
Xcode: N/A
Android Studio: Not Found

Packages: (wanted => installed)
react: 16.2.0 => 16.2.0
react-native: https://github.com/expo/react-native/archive/sdk-25.0.0.tar.gz => 0.52.0

Target Platform: Android

Steps to Reproduce

I created a repo https://github.com/Hunsu/react-native-fetch-mock-issue-5 with the issue.

I wanted to use the package react-native-fetch-mock. I ran into an issue about the es6 Symbol. So I added a polyfill (babel-polyfill and replaced later with es6-symbol/). The issue was resolved but now I got errors about invalid props for the components I use. The errors are always about the children props: Failed prop type: invalid prop 'children' of type object supplied to 'some component', expected a single ReactElement.

Expected Behavior

No props validation errors

Actual Behavior

Props errors

Reproducible Demo

https://github.com/Hunsu/react-native-fetch-mock-issue-5

Just do yarn install and then start the app on expo.

[react-native-bot]

Thanks for posting this! It looks like you may not be using the latest version of React Native, v0.53.0, released on January 2018. Can you make sure this issue can still be reproduced in the latest version?

I am going to close this, but please feel free to open a new issue if you are able to confirm that this is still a problem in v0.53.0 or newer.

_{How to Contribute • What to Expect from Maintainers}

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