Ignore the .rnrepo-cache directory within the Metro config

[radoslawrolka]

Description

This prevents Metro from crashing with an Invariant Violation when internal scripts dynamically recreate this directory or replace it with a symlink during the expo prebuild process in example apps.

<>gesture-handler/apps/expo-example/node_modules/@expo/cli/build/src/utils/errors.js:130
    throw error;
    ^

Invariant Violation: Detected addition or modification of file node_modules/react-native-screens/.rnrepo-cache/Current, but it is tracked as a non-empty directory
    at invariant (<>gesture-handler/apps/expo-example/node_modules/invariant/invariant.js:40:15)
    at TreeFS.addOrModify (<>gesture-handler/apps/expo-example/node_modules/@expo/metro-file-map/build/lib/TreeFS.js:386:41)
    at Timeout.emitChange [as _onTimeout] (<>gesture-handler/apps/expo-example/node_modules/@expo/metro-file-map/build/index.js:580:32)
    at listOnTimeout (node:internal/timers:588:17)
    at process.processTimers (node:internal/timers:523:7) {
  framesToPop: 1
}

Test plan

1. Without commit

git clone https://github.com/software-mansion/react-native-gesture-handler
cd react-native-gesture-handler
yarn install
cd apps/expo-example
yarn start

# new terminal (2)
cd react-native-gesture-handler/apps/expo-example
yarn ios

# Metro crashes in the first terminal with the Invariant Violation shown above.

2. With commit

git clone https://github.com/software-mansion/react-native-gesture-handler
cd react-native-gesture-handler
yarn install
cd apps/expo-example
yarn start

# new terminal (2)
cd react-native-gesture-handler/apps/expo-example
yarn ios

# Metro runs normally and no error is thrown in the first terminal

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates the Expo example Metro configuration to ignore the .rnrepo-cache directory to prevent watchman “Invariant Violation” errors during file watching.

Changes:

• Adds an exclusion rule intended to ignore .rnrepo-cache and its contents in Metro’s resolver blacklist/block list configuration.

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