Invariant Violation: new NativeEventEmitter() requires a non-null argument

[richardgirges]

Description:
I am on a fresh install of React Native (0.67.1). I've configured and imported a fresh install of react-native-onesignal (4.3.6).

The moment I import the react-native-onesignal package, regardless of any method from the OneSignal package, I get the following error while running on iOS:

Invariant Violation: `new NativeEventEmitter()` requires a non-null argument.

Environment
React Native 0.67.1
react-native-onesignal 4.3.6 (installed w/ yarn)
Running into error while running on iOS emulator (haven't tried Android yet)

Steps to Reproduce Issue:

• Setup a new react-native project
• Follow the steps outlined here: https://documentation.onesignal.com/docs/react-native-sdk-setup
• yarn add react-native-onesignal
• Import react-native-onesignal and execute any method (e.g., OneSignal.setAppId)

Anything else:

Call stack points to react-native-onesignal/dist/index.js L50:

var eventManager = new EventManager_1.default(RNOneSignal);

[richardgirges]

Welp, I deleted OneSignalNotificationServiceExtension and re-added it and that resolved the issue. Not sure what I did wrong there. Closing this topic.

[oliviercperrier]

@richardgirges Im getting the same error with expo SDK 51 and react native 0.74.5 on a development build.. Not sure what to do to fix that

[delki8]

this is also happening to me, I still don't know the cause (removing and re-adding following onesignal's instructions did not help). I guess it's related to this line

react-native-onesignal/src/events/EventManager.ts

Line 42 in 0fa9e05

this.oneSignalEventEmitter = new NativeEventEmitter(RNOneSignal);

, where the NativeEventEmitter is instantiated. The RNOneSignal variable might be null due to NativeModules.OneSignal also being null here:

react-native-onesignal/src/index.ts

Line 42 in 0fa9e05

const RNOneSignal = NativeModules.OneSignal;

.

But I don't understand why would NativeModules, that come directly from 'react-native', would have a module called OneSignal. Maybe it should be added by some step that isn't running, but I can't figure out which one it is.

This is a small app that was recently migrated to RN 0.76.2, but I never really managed to put OneSignal to work on it.