This repo exists to demonstrate that react-native-maps/react-native-maps#2096 breaks the react-native-maps build.

The project was created as follows:

The following steps were performed to test the build behavior:

(You can click on each line item to verify the changes in each step. I have not modified the .gitignore file to remove intermediate build files.)

1. Create the project.

create-react-native-app RNMapsGradleRepro
cd RNMapsGradleRepro
yarn eject

2. Attempt building - successful.

yarn android

3. Add react-native-maps dependency.

yarn add react-native-maps

4. Ran react-native link

react-native link
git checkout -- ios/ # remove irrelevant iOS changes (also broken)

5. Attempt building - unsuccessful

yarn android

This is the output from ./gradlew installDebug:

yarn run v1.6.0
(node:44100) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
$ react-native run-android
Scanning folders for symlinks in /Users/harry/Downloads/RNMapsGradleRepro/node_modules (11ms)
(node:44101) ExperimentalWarning: The fs.promises API is experimental
JS server already running.
Building and installing the app on the device (cd android && ./gradlew installDebug)...

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/harry/Downloads/RNMapsGradleRepro/node_modules/react-native-maps/lib/android/build.gradle' line: 46

* What went wrong:
A problem occurred evaluating project ':react-native-maps'.
> Could not find method compileOnly() for arguments [com.facebook.react:react-native:+] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 10.168 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/getting-started.html
✨  Done in 13.20s.

6. Replace react-native-maps dependency with one that reverts #2096.

I manually edited package.json to point to this commit: https://github.com/mlisik/react-native-maps/commit/0705ba1c5820f453bcec29c8227fd0bd1e93171f

This step could just as easily have been done using patch-package, but this was quicker.

7. Attempt building - successful

Reverting the pull request fixes the build.

Note: This project does not follow the rest of the installation instructions, such as adding a Google Maps API key, or actually rendering a map.