RevenueCat
undefined is not a function in eventEmitter.addListener$argument_1(react-native-purchases/dist/purchases)
Describe the bug The React Native Purchases SDK throws a "TypeError: undefined is not a function" error when initializing on React Native 0.79.4. The error occurs in the event emitter setup where eventEmitter.addListener is called on an undefined object.
- Environment a. Platform: iOS and Android b. SDK version: 8.11.5 c. OS version: iOS 17+ / Android 13+ d. Xcode/Android Studio version: Xcode 15.2 / Android Studio Giraffe e. React Native version: 0.79.4 f. SDK installation (CocoaPods + version or manual): npm (Expo SDK 53 managed workflow) g. How widespread is the issue. Percentage of devices affected: 100%
- occurs on all devices during app initialization
- https://docs.revenuecat.com/docs/debugging that reproduce the issue TypeError: undefined is not a function mechanism: onerror handled: false
/node_modules/react-native-purchases/dist/purchases.js in eventEmitter.addListener$argument_1 at line 72:21
eventEmitter === null || eventEmitter === void 0 ? void 0 : eventEmitter.addListener("Purchases-LogHandlerEvent", function (_a) { var logLevel = _a.logLevel, message = _a.message; var logLevelEnum = purchases_typescript_internal_1.LOG_LEVEL[logLevel]; customLogHandler(logLevelEnum, message); });
- Steps to reproduce, with a description of expected vs. actual behavior - Install mailto:[email protected] in a React Native 0.79.4 project - Initialize Purchases SDK with Purchases.configure({ apiKey, appUserID }) - Expected: SDK initializes successfully - Actual: App crashes with "undefined is not a function" error during event listener setup
- Other information - The issue appears to be related to NativeEventEmitter compatibility with React Native 0.79.x - The error occurs at line 56 in purchases.js where new react_native_1.NativeEventEmitter(RNPurchases) is called - The eventEmitter variable becomes undefined, causing subsequent addListener calls to fail - This is likely a breaking change in React Native 0.79's event emitter API
👀 We've just linked this issue to our internal tracker and notified the team. Thank you for reporting, we're checking this out!
Ahhhh, it looks like there was a breaking change in this version of RN with imports 😬 👇 We will take a look!
https://github.com/facebook/react-native/releases/tag/v0.79.0
@joshdholtz Could You Fix it and release a patch maybe its causing crashes for the production app Thanks !
Also facing this issue. Although, this error is only thrown when there is no internet connection. Works fine for me otherwise.
@joshdholtz Any Update on this our crash rates are going up very fast due to this issue on play console !!
I had a similar issue — the error looked almost identical to the one described in the bug report.
My solution was to add a customLogHandler, for example:
Purchases.setLogHandler((logLevel, message) => {
console.log(`RevenueCat Log - ${LOG_LEVEL[logLevel]}: ${message}`)
})
Maybe this will help you too.
