refactor(iOS): Migrate RCTOnPageScrollEvent to swift

example/ios/Podfile.lock

@@ -2090,7 +2090,7 @@ SPEC CHECKSUMS:
   React-logger: 26155dc23db5c9038794db915f80bd2044512c2e
   React-Mapbuffer: ad1ba0205205a16dbff11b8ade6d1b3959451658
   React-microtasksnativemodule: e771eb9eb6ace5884ee40a293a0e14a9d7a4343c
-  react-native-pager-view: 7f8b1f81aee3c953ea25851553e88b69a7c0413d
+  react-native-pager-view: bad41ab1a3d1391153c4a08bceae65328d244518
   react-native-safe-area-context: 2500e4fe998caad50ad3bc51ec23ef951308569e
   React-nativeconfig: aeed6e2a8ac02b2df54476afcc7c663416c12bf7
   React-NativeModulesApple: c5b7813da94136f50ef084fa1ac077332dcfc658

ios/Events/OnPageScroll.swift

@@ -0,0 +1,46 @@
+import Foundation
+import React
+
+public protocol RCTEvent {}
+
+@objc public class RCTOnPageScroll: NSObject, RCTEvent {
+    private var position: NSNumber
+    private var offset: NSNumber
+    @objc public var viewTag: NSNumber
+    @objc public var coalescingKey: UInt16
+
+    @objc public var eventName: String {
+        return "onPageScroll"
+    }
+
+    @objc public init(reactTag: NSNumber, position: NSNumber, offset: NSNumber, coalescingKey: UInt16) {
+        self.viewTag = reactTag
+        self.position = position
+        self.offset = offset
+        self.coalescingKey = coalescingKey
+        super.init()
+    }
+
+    @objc public func canCoalesce() -> Bool {
+        return true
+    }
+
+    public func coalesce(with newEvent: RCTEvent) ->  RCTEvent {
+        return newEvent
+    }
+
+    @objc public class func moduleDotMethod() -> String {
+        return "RCTEventEmitter.receiveEvent"
+    }
+
+    @objc public func arguments() -> [Any] {
+        return [
+            viewTag,
+            RCTNormalizeInputEventName(eventName) ?? eventName,
+            [
+                "position": position,
+                "offset": offset
+            ]
+        ]
+    }
+}

ios/Fabric/RNCPagerViewComponentView.mm

@@ -10,7 +10,12 @@
 #import "RCTFabricComponentsPlugins.h"
 #import "React/RCTConversions.h"
 
-#import "RCTOnPageScrollEvent.h"
+#if __has_include("react_native_pager_view/react_native_pager_view-Swift.h")
+#import "react_native_pager_view/react_native_pager_view-Swift.h"
+#else
+#import "react_native_pager_view-Swift.h"
+#endif
+
 
 using namespace facebook::react;
 
@@ -374,7 +379,7 @@ - (void)scrollViewDidScroll:(UIScrollView *)scrollView {
     // This is temporary workaround to allow animations based on onPageScroll event
     // until Fabric implements proper NativeAnimationDriver,
     // see: https://github.com/facebook/react-native/blob/44f431b471c243c92284aa042d3807ba4d04af65/packages/react-native/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.mm#L59
-    NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:[[RCTOnPageScrollEvent alloc] initWithReactTag:[NSNumber numberWithInt:self.tag] position:@(position) offset:@(interpolatedOffset)], @"event", nil];
+    NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:[[RCTOnPageScroll alloc] initWithReactTag:[NSNumber numberWithInt:self.tag] position:@(position) offset:@(interpolatedOffset) coalescingKey:0], @"event", nil];
     [[NSNotificationCenter defaultCenter] postNotificationName:@"RCTNotifyEventDispatcherObserversOfEvent_DEPRECATED"
                                                         object:nil
                                                       userInfo:userInfo];

ios/RNCPagerView.m

@@ -3,11 +3,17 @@
 #import <React/RCTViewManager.h>
 
 #import "UIViewController+CreateExtension.h"
-#import "RCTOnPageScrollEvent.h"
 #import "RCTOnPageScrollStateChanged.h"
 #import "RCTOnPageSelected.h"
 #import <math.h>
 
+#if __has_include("react_native_pager_view/react_native_pager_view-Swift.h")
+#import "react_native_pager_view/react_native_pager_view-Swift.h"
+#else
+#import "react_native_pager_view-Swift.h"
+#endif
+
+
 @interface RNCPagerView () <UIPageViewControllerDataSource, UIPageViewControllerDelegate, UIScrollViewDelegate, UIGestureRecognizerDelegate>
 
 @property(nonatomic, assign) UIPanGestureRecognizer* panGestureRecognizer;
@@ -342,7 +348,7 @@ - (void)pageViewController:(UIPageViewController *)pageViewController
         self.currentIndex = currentIndex;
         self.currentView = currentVC.view;
         [self.eventDispatcher sendEvent:[[RCTOnPageSelected alloc] initWithReactTag:self.reactTag position:@(currentIndex) coalescingKey:_coalescingKey++]];
-        [self.eventDispatcher sendEvent:[[RCTOnPageScrollEvent alloc] initWithReactTag:self.reactTag position:@(currentIndex) offset:@(0.0)]];
+        [self.eventDispatcher sendEvent:[[RCTOnPageScroll alloc] initWithReactTag:self.reactTag position:@(currentIndex) offset:@(0.0) coalescingKey:0]];
         self.lastReportedIndex = currentIndex;
     }
 }
@@ -453,7 +459,7 @@ - (void)scrollViewDidScroll:(UIScrollView *)scrollView {
     float interpolatedOffset = absoluteOffset * labs(_destinationIndex - _currentIndex);
 
     self.lastContentOffset = scrollView.contentOffset;
-    [self.eventDispatcher sendEvent:[[RCTOnPageScrollEvent alloc] initWithReactTag:self.reactTag position:@(position) offset:@(interpolatedOffset)]];
+    [self.eventDispatcher sendEvent:[[RCTOnPageScroll alloc] initWithReactTag:self.reactTag position:@(position) offset:@(interpolatedOffset) coalescingKey:0]];
 }
 
 - (NSString *)determineScrollDirection:(UIScrollView *)scrollView {

ios/react-native-pager-view-Bridging-Header.h

@@ -0,0 +1,4 @@
+#import <React/RCTViewManager.h>
+#import <React/RCTUIManager.h>
+#import <React/UIView+React.h>
+#import <React/RCTUtils.h>

react-native-pager-view.podspec

@@ -15,7 +15,7 @@ Pod::Spec.new do |s|
   s.platforms    = { :ios => "10.0", :visionos => "1.0" }
   s.source       = { :git => "https://github.com/callstack/react-native-pager-view.git", :tag => "#{s.version}" }
 
-  s.source_files = "ios/**/*.{h,m,mm}"
+  s.source_files = "ios/**/*.{h,m,mm,swift}"
 
   # install_modules_dependencies has been defined in RN 0.70
   # This check ensure that the library can work on older versions of RN