This would create a Podfile in your ios directory. Run react-native link react-native-google-places at the root directory of your project and ensure you edit your Podfile to look like the sample below ...

This package uses the Google Maps Navigation SDK for Android and iOS, which includes a dependency on the Google Maps SDK. If your project includes other React Native libraries with Google Maps SDK ...

The latest React Native framework is less about flashy new APIs and more about keeping pace with Android and iOS platform advancements.