fix(js): make sure that RCTEventEmitter is registered before emitting the first onScroll event (#809)

Author: cipolleschi

src/PagerView.tsx

@@ -14,6 +14,17 @@ import PagerViewView, {
   Commands as PagerViewCommands,
 } from './PagerViewNativeComponent';
 
+// The Fabric component for PagerView uses a work around present also in ScrollView:
+// https://github.com/callstack/react-native-pager-view/blob/master/ios/Fabric/RNCPagerViewComponentView.mm#L362-L368
+// That workaround works only if we add these lines in to make sure that the RCTEventEmitter is registered properly
+// in the JS callable modules.
+// NOTE: This is a workaround as we would like to get rid of these lines below. But for the time being, as the cut date for
+// 0.74 approaches, we need to keep these lines.
+// As soon as we figure out how to move forward, we will provide guidance and/or submit a PR to fix this.
+if (Platform.OS === 'ios') {
+  require('react-native/Libraries/Renderer/shims/ReactNative'); // Force side effects to prevent T55744311
+}
+
 /**
  * Container that allows to flip left and right between child views. Each
  * child view of the `PagerView` will be treated as a separate page