This is an issue I had with RealmJS while working on my React Native app. I spent over four days trying to debug what was going wrong (I had already built a significant portion of the app, thinking it would be patched out in a newer release). Hopefully this helps someone.
I am trying to debug my React Native application but cannot due to RealmJS. When I run my simulator or device (either iOS or Android), the app works perfectly fine. Turn on Remote Debug, however, and the app just hangs on launch. I get the following error along with a blank white screen:
TypeError: Cannot read property 'Realm' of undefined reactConsoleErrorHandler @ ExceptionsManager.js:179 n @ backend.js:32 reportException @ ExceptionsManager.js:104 handleException @ ExceptionsManager.js:171 handleError @ setUpErrorHandling.js:24 reportFatalError @ error-guard.js:49 guardedLoadModule @ require.js:204 metroRequire @ require.js:128 (anonymous) @ index.js:118 executeApplicationScript @ RNDebuggerWorker.js:2 (anonymous) @ RNDebuggerWorker.js:2I've tried reseting the cache (watchman, react-native, pods, etc.), cleaning the build folder, and even restarting my machine, but nothing seems to work. Installing Realm in a fresh project shows that it works just fine, but I don't want to have to redo my entire project. What am I doing wrong?
Setup (npx react-native info):
System: OS: macOS 10.15.5 CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz Memory: 230.89 MB / 16.00 GB Shell: 5.7.1 - /bin/zsh Binaries: Node: 14.12.0 - /usr/local/bin/node Yarn: 1.22.4 - /usr/local/bin/yarn npm: 6.14.8 - ~/Projects/MyApp/node_modules/.bin/npm Watchman: 4.9.0 - /usr/local/bin/watchman Managers: CocoaPods: 1.9.3 - /usr/local/bin/pod SDKs: iOS SDK: Platforms: iOS 13.6, DriverKit 19.0, macOS 10.15, tvOS 13.4, watchOS 6.2 Android SDK: Not Found IDEs: Android Studio: 4.0 AI-193.6911.18.40.6626763 Xcode: 11.6/11E708 - /usr/bin/xcodebuild Languages: Java: 14.0.2 - /usr/bin/javac Python: 2.7.16 - /usr/bin/python npmPackages: @react-native-community/cli: ^4.13.0 => 4.13.0 react: 16.13.1 => 16.13.1 react-native: 0.63.3 => 0.63.3 react-native-macos: Not Found npmGlobalPackages: *react-native*: Not Found