refactor(misc): remove obsolete OS availability checks

FirebaseAnalytics/Tests/SwiftUnit/AnalyticsAPITests.swift

@@ -37,13 +37,10 @@ final class AnalyticsAPITests {
     Analytics.setDefaultEventParameters(["default": 100])
 
     Analytics.sessionID { sessionID, error in }
-    if #available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, watchOS 7.0, *) {
-      Task {
-        let _: Int64? = try? await Analytics.sessionID()
-      }
+    Task {
+      let _: Int64? = try? await Analytics.sessionID()
     }
 
-    @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, *)
     @available(watchOS, unavailable)
     func logTransactionUsage() {
       let transaction: StoreKit.Transaction! = nil
@@ -53,11 +50,10 @@ final class AnalyticsAPITests {
     // MARK: - AppDelegate
 
     Analytics.handleEvents(forBackgroundURLSession: "session_id", completionHandler: {})
-    if #available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, watchOS 7.0, *) {
-      Task {
-        await Analytics.handleEvents(forBackgroundURLSession: "session_id")
-      }
+    Task {
+      await Analytics.handleEvents(forBackgroundURLSession: "session_id")
     }
+
     Analytics.handleOpen(URL(string: "https://google.com")!)
     Analytics.handleUserActivity(NSUserActivity(activityType: "editing"))
 
@@ -198,7 +194,6 @@ final class AnalyticsAPITests {
 
     // MARK: - Analytics + SwiftUI
 
-    @available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, *)
     @available(watchOS, unavailable)
     struct MyView: View {
       let name: String

FirebaseAppDistribution/Sources/FIRAppDistributionUIService.m

@@ -88,9 +88,7 @@ - (void)appDistributionRegistrationFlow:(NSURL *)URL
         completion(appDistributionError);
       }];
 
-  if (@available(iOS 13.0, *)) {
-    authenticationVC.presentationContextProvider = self;
-  }
+  authenticationVC.presentationContextProvider = self;
 
   _webAuthenticationVC = authenticationVC;
 
@@ -164,30 +162,26 @@ - (void)initializeUIState {
     return;
   }
 
-  if (@available(iOS 13.0, *)) {
-    UIWindowScene *foregroundedScene = nil;
-    for (UIWindowScene *connectedScene in [UIApplication sharedApplication].connectedScenes) {
-      if (connectedScene.activationState == UISceneActivationStateForegroundActive) {
-        foregroundedScene = connectedScene;
-        break;
-      }
+  UIWindowScene *foregroundedScene = nil;
+  for (UIWindowScene *connectedScene in [UIApplication sharedApplication].connectedScenes) {
+    if (connectedScene.activationState == UISceneActivationStateForegroundActive) {
+      foregroundedScene = connectedScene;
+      break;
     }
+  }
 
-    if (foregroundedScene) {
-      self.window = [[UIWindow alloc] initWithWindowScene:foregroundedScene];
-    } else if ([UIApplication sharedApplication].connectedScenes.count == 1) {
-      // There are situations where a scene isn't considered foreground in viewDidAppear
-      // and this fixes the issue in single scene apps.
-      // https://github.com/firebase/firebase-ios-sdk/issues/8096
-      UIWindowScene *scene =
-          (UIWindowScene *)[UIApplication sharedApplication].connectedScenes.anyObject;
-      self.window = [[UIWindow alloc] initWithWindowScene:scene];
-    } else {
-      // TODO: Consider using UISceneDidActivateNotification.
-      FIRFADInfoLog(@"No foreground scene found.");
-      self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
-    }
+  if (foregroundedScene) {
+    self.window = [[UIWindow alloc] initWithWindowScene:foregroundedScene];
+  } else if ([UIApplication sharedApplication].connectedScenes.count == 1) {
+    // There are situations where a scene isn't considered foreground in viewDidAppear
+    // and this fixes the issue in single scene apps.
+    // https://github.com/firebase/firebase-ios-sdk/issues/8096
+    UIWindowScene *scene =
+        (UIWindowScene *)[UIApplication sharedApplication].connectedScenes.anyObject;
+    self.window = [[UIWindow alloc] initWithWindowScene:scene];
   } else {
+    // TODO: Consider using UISceneDidActivateNotification.
+    FIRFADInfoLog(@"No foreground scene found.");
     self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
   }
   self.window.rootViewController = self.safariHostingViewController;
@@ -223,7 +217,7 @@ - (void)safariViewControllerDidFinish:(SFSafariViewController *)controller {
 }
 
 - (ASPresentationAnchor)presentationAnchorForWebAuthenticationSession:
-    (ASWebAuthenticationSession *)session API_AVAILABLE(ios(13.0)) {
+    (ASWebAuthenticationSession *)session {
   return self.safariHostingViewController.view.window;
 }
 

FirebaseAppDistribution/Tests/Unit/Swift/AppDistributionAPITest.swift

@@ -16,7 +16,6 @@
 import XCTest
 
 class AppDistributionAPITests: XCTestCase {
-  @available(iOS 13.0.0, *)
   func asyncAPIs() async throws {
     let distro = AppDistribution.appDistribution()
 

FirebaseCore/Extension/FIRHeartbeatLogger.h

@@ -44,8 +44,7 @@ NS_SWIFT_SENDABLE
 
 #ifndef FIREBASE_BUILD_CMAKE
 /// Returns the header value for the heartbeat logger via the given completion handler..
-- (void)asyncHeaderValueWithCompletionHandler:(void (^)(NSString *_Nullable))completionHandler
-    API_AVAILABLE(ios(13.0), macosx(10.15), macCatalyst(13.0), tvos(13.0), watchos(6.0));
+- (void)asyncHeaderValueWithCompletionHandler:(void (^)(NSString *_Nullable))completionHandler;
 
 /// Return the header value for the heartbeat logger.
 - (NSString *_Nullable)headerValue;
@@ -91,8 +90,7 @@ NSString *_Nullable FIRHeaderValueFromHeartbeatsPayload(FIRHeartbeatsPayload *he
 /// @note This API is thread-safe.
 /// @param completionHandler A completion handler to process the flushed payload of heartbeats.
 - (void)flushHeartbeatsIntoPayloadWithCompletionHandler:
-    (void (^)(FIRHeartbeatsPayload *))completionHandler
-    API_AVAILABLE(ios(13.0), macosx(10.15), macCatalyst(13.0), tvos(13.0), watchos(6.0));
+    (void (^)(FIRHeartbeatsPayload *))completionHandler;
 #endif  // FIREBASE_BUILD_CMAKE
 
 /// Gets today's corresponding heartbeat code.

FirebaseCore/Sources/FIRHeartbeatLogger.m

@@ -74,8 +74,7 @@ - (NSString *_Nullable)headerValue {
   return FIRHeaderValueFromHeartbeatsPayload([self flushHeartbeatsIntoPayload]);
 }
 
-- (void)asyncHeaderValueWithCompletionHandler:(void (^)(NSString *_Nullable))completionHandler
-    API_AVAILABLE(ios(13.0), macosx(10.15), macCatalyst(13.0), tvos(13.0), watchos(6.0)) {
+- (void)asyncHeaderValueWithCompletionHandler:(void (^)(NSString *_Nullable))completionHandler {
   [self flushHeartbeatsIntoPayloadWithCompletionHandler:^(FIRHeartbeatsPayload *payload) {
     completionHandler(FIRHeaderValueFromHeartbeatsPayload(payload));
   }];
@@ -87,8 +86,7 @@ - (FIRHeartbeatsPayload *)flushHeartbeatsIntoPayload {
 }
 
 - (void)flushHeartbeatsIntoPayloadWithCompletionHandler:
-    (void (^)(FIRHeartbeatsPayload *))completionHandler
-    API_AVAILABLE(ios(13.0), macosx(10.15), macCatalyst(13.0), tvos(13.0), watchos(6.0)) {
+    (void (^)(FIRHeartbeatsPayload *))completionHandler {
   [_heartbeatController flushAsyncWithCompletionHandler:^(FIRHeartbeatsPayload *payload) {
     completionHandler(payload);
   }];

FirebaseCore/Tests/SwiftUnit/CoreAPITests.swift

@@ -51,11 +51,9 @@ final class CoreAPITests {
         // ...
       }
 
-      if #available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, watchOS 7.0, *) {
-        // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
-        Task {
-          await app.delete()
-        }
+      // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
+      Task {
+        await app.delete()
       }
     }
 

FirebaseCore/Tests/Unit/FIRAppTest.m

@@ -865,11 +865,7 @@ - (NSNotificationName)appDidBecomeActiveNotificationName {
   return NSApplicationDidBecomeActiveNotification;
 #elif TARGET_OS_WATCH
   // See comment in `- [FIRApp subscribeForAppDidBecomeActiveNotifications]`.
-  if (@available(watchOS 7.0, *)) {
-    return WKApplicationDidBecomeActiveNotification;
-  } else {
-    return kFIRAppReadyToConfigureSDKNotification;
-  }
+  return WKApplicationDidBecomeActiveNotification;
 #endif
 }
 

FirebaseCore/Tests/Unit/FIRHeartbeatLoggerTests.m

@@ -125,8 +125,7 @@ - (void)testFlushing_UsingV2API_WhenHeartbeatsAreStored_ReturnsNonEmptyPayload {
               }];
 }
 
-- (void)testFlushingAsync_UsingV2API_WhenHeartbeatsAreStored_ReturnsNonEmptyPayload API_AVAILABLE(
-    ios(13.0), macosx(10.15), macCatalyst(13.0), tvos(13.0), watchos(6.0)) {
+- (void)testFlushingAsync_UsingV2API_WhenHeartbeatsAreStored_ReturnsNonEmptyPayload {
   // Given
   FIRHeartbeatLogger *heartbeatLogger = self.heartbeatLogger;
   NSString *expectedDate = [[self class] formattedStringForDate:[NSDate date]];
@@ -158,8 +157,7 @@ - (void)testFlushing_UsingV2API_WhenNoHeartbeatsAreStored_ReturnsEmptyPayload {
   [self assertHeartbeatsPayloadIsEmpty:heartbeatsPayload];
 }
 
-- (void)testFlushingAsync_UsingV2API_WhenNoHeartbeatsAreStored_ReturnsEmptyPayload API_AVAILABLE(
-    ios(13.0), macosx(10.15), macCatalyst(13.0), tvos(13.0), watchos(6.0)) {
+- (void)testFlushingAsync_UsingV2API_WhenNoHeartbeatsAreStored_ReturnsEmptyPayload {
   // Given
   FIRHeartbeatLogger *heartbeatLogger = self.heartbeatLogger;
   // When

FirebaseFunctions/Sources/Callable+Codable.swift

@@ -217,7 +217,7 @@ public enum StreamResponse<Message: Decodable & Sendable, Result: Decodable & Se
   }
 }
 
-@available(macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0, *)
+@available(macOS 12.0, watchOS 8.0, *)
 public extension Callable where Request: Sendable, Response: Sendable {
   /// Creates a stream that yields responses from the streaming callable function.
   ///

FirebaseFunctions/Sources/Functions.swift

@@ -407,7 +407,7 @@ enum FunctionsConstants {
     }
   }
 
-  @available(macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0, *)
+  @available(macOS 12.0, watchOS 8.0, *)
   func stream(at url: URL,
               data: SendableWrapper?,
               options: HTTPSCallableOptions?,

FirebaseFunctions/Sources/HTTPSCallable.swift

@@ -165,7 +165,7 @@ public final class HTTPSCallable: NSObject, Sendable {
       .callFunction(at: url, withObject: data, options: options, timeout: timeoutInterval)
   }
 
-  @available(macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0, *)
+  @available(macOS 12.0, watchOS 8.0, *)
   func stream(_ data: SendableWrapper? = nil) -> AsyncThrowingStream<JSONStreamResponse, Error> {
     functions.stream(at: url, data: data, options: options, timeout: timeoutInterval)
   }

FirebaseFunctions/Tests/Integration/IntegrationTests.swift

@@ -895,7 +895,7 @@ class IntegrationTests: XCTestCase {
 /// indicate the callable function does not accept parameters.
 private struct EmptyRequest: Encodable, Sendable {}
 
-@available(macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0, *)
+@available(macOS 12.0, watchOS 8.0, *)
 extension IntegrationTests {
   func testStream_NoArgs() async throws {
     // 1. Custom `EmptyRequest` struct is passed as a placeholder generic arg.

FirebaseInstallations/Source/Library/IIDMigration/FIRInstallationsIIDStore.m

@@ -203,11 +203,7 @@ - (BOOL)deleteIIDFlagFromPlist:(NSError **)outError {
   NSMutableDictionary *plistContent = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
   plistContent[kFIRInstallationsIIDCreationTimePlistKey] = nil;
 
-  if (@available(macOS 10.13, iOS 11.0, tvOS 11.0, *)) {
-    return [plistContent writeToURL:[NSURL fileURLWithPath:path] error:outError];
-  }
-
-  return [plistContent writeToFile:path atomically:YES];
+  return [plistContent writeToURL:[NSURL fileURLWithPath:path] error:outError];
 }
 
 - (BOOL)hasPlistIIDFlag {

FirebaseInstallations/Source/Library/IIDMigration/FIRInstallationsIIDTokenStore.m

@@ -80,18 +80,7 @@ - (instancetype)initWithGCMSenderID:(NSString *)GCMSenderID {
 
   NSError *archiverError;
   NSKeyedUnarchiver *unarchiver;
-  if (@available(iOS 11.0, tvOS 11.0, macOS 10.13, *)) {
-    unarchiver = [[NSKeyedUnarchiver alloc] initForReadingFromData:data error:&archiverError];
-  } else {
-    @try {
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-      unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
-#pragma clang diagnostic pop
-    } @catch (NSException *exception) {
-      archiverError = [FIRInstallationsErrorUtil keyedArchiverErrorWithException:exception];
-    }
-  }
+  unarchiver = [[NSKeyedUnarchiver alloc] initForReadingFromData:data error:&archiverError];
 
   if (!unarchiver) {
     NSError *error = archiverError ?: [FIRInstallationsErrorUtil corruptedIIDTokenData];

FirebaseInstallations/Source/Tests/Unit/Swift/InstallationsAPITests.swift

@@ -51,14 +51,12 @@ final class InstallationsAPITests {
       }
     }
 
-    if #available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, watchOS 7.0, *) {
-      // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
-      Task {
-        do {
-          try await Installations.installations().installationID()
-        } catch {
-          // ...
-        }
+    // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
+    Task {
+      do {
+        try await Installations.installations().installationID()
+      } catch {
+        // ...
       }
     }
 
@@ -71,14 +69,12 @@ final class InstallationsAPITests {
       }
     }
 
-    if #available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, watchOS 7.0, *) {
-      // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
-      Task {
-        do {
-          _ = try await Installations.installations().authToken()
-        } catch {
-          // ...
-        }
+    // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
+    Task {
+      do {
+        _ = try await Installations.installations().authToken()
+      } catch {
+        // ...
       }
     }
 
@@ -91,14 +87,12 @@ final class InstallationsAPITests {
       }
     }
 
-    if #available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, watchOS 7.0, *) {
-      // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
-      Task {
-        do {
-          _ = try await Installations.installations().authTokenForcingRefresh(true)
-        } catch {
-          // ...
-        }
+    // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
+    Task {
+      do {
+        _ = try await Installations.installations().authTokenForcingRefresh(true)
+      } catch {
+        // ...
       }
     }
 
@@ -109,20 +103,18 @@ final class InstallationsAPITests {
       }
     }
 
-    if #available(iOS 13.0, macOS 10.15, macCatalyst 13.0, tvOS 13.0, watchOS 7.0, *) {
-      // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
-      Task {
-        do {
-          _ = try await Installations.installations().delete()
-        } catch let error as NSError
-          where error.domain == InstallationsErrorDomain && error.code == InstallationsErrorCode
-          .unknown.rawValue {
-          // Above is the old way to handle errors.
-        } catch InstallationsErrorCode.unknown {
-          // Above is the new way to handle errors.
-        } catch {
-          // ...
-        }
+    // async/await is a Swift Concurrency feature available on iOS 13+ and macOS 10.15+
+    Task {
+      do {
+        _ = try await Installations.installations().delete()
+      } catch let error as NSError
+        where error.domain == InstallationsErrorDomain && error.code == InstallationsErrorCode
+        .unknown.rawValue {
+        // Above is the old way to handle errors.
+      } catch InstallationsErrorCode.unknown {
+        // Above is the new way to handle errors.
+      } catch {
+        // ...
       }
     }