chore(apple): give Swift Package Manager its own Firebase SDK pin

packages/firebase_core/firebase_core/ios/firebase_sdk_version.rb

@@ -1,4 +1,7 @@
 # https://firebase.google.com/support/release-notes/ios
+# CocoaPods pin. Do not bump this past the last firebase-ios-sdk version
+# published to CocoaPods. New releases stop publishing in October 2026.
+# Swift Package Manager uses scripts/firebase_sdk_version_spm.dart.
 def firebase_sdk_version!()
   '12.19.0'
 end

scripts/firebase_sdk_version_spm.dart

@@ -0,0 +1,12 @@
+// Copyright 2026 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/// Swift Package Manager pin for firebase-ios-sdk.
+///
+/// This may be newer than the CocoaPods pin in
+/// `packages/firebase_core/firebase_core/ios/firebase_sdk_version.rb`.
+/// Firebase stops publishing new Apple SDK versions to CocoaPods in
+/// October 2026. Podspecs must keep using the last version that was
+/// published as a pod.
+const String firebaseSpmSdkVersion = '12.19.0';

scripts/generate_bom.dart

@@ -10,6 +10,7 @@ import 'package:intl/intl.dart';
 import 'package:melos/melos.dart';
 
 import 'bom_analysis.dart';
+import 'firebase_sdk_version_spm.dart';
 
 const packagesDir = 'packages';
 const versionsFile = 'VERSIONS.md';
@@ -73,6 +74,7 @@ void main(List<String> arguments) async {
       'firebase_sdk': {
         'android': androidSdkVersion,
         'ios': iosSdkVersion,
+        'ios_spm': firebaseSpmSdkVersion,
         'web': webSdkVersion,
         'windows': windowsSdkVersion,
       },
@@ -100,6 +102,7 @@ void main(List<String> arguments) async {
     date,
     androidSdkVersion,
     iosSdkVersion,
+    firebaseSpmSdkVersion,
     webSdkVersion,
     windowsSdkVersion,
   );
@@ -145,6 +148,7 @@ Future<void> appendStaticText(
   String date,
   String androidSdkVersion,
   String iosSdkVersion,
+  String iosSpmSdkVersion,
   String webSdkVersion,
   String windowsSdkVersion,
 ) async {
@@ -185,7 +189,10 @@ Future<void> appendStaticText(
     '| Android SDK | $androidSdkVersion | [Release Notes](https://firebase.google.com/support/release-notes/android) |',
   );
   sink.writeln(
-    '| iOS SDK | $iosSdkVersion | [Release Notes](https://firebase.google.com/support/release-notes/ios) |',
+    '| iOS SDK (CocoaPods) | $iosSdkVersion | [Release Notes](https://firebase.google.com/support/release-notes/ios) |',
+  );
+  sink.writeln(
+    '| iOS SDK (Swift Package Manager) | $iosSpmSdkVersion | [Release Notes](https://firebase.google.com/support/release-notes/ios) |',
   );
   sink.writeln(
     '| Web SDK | $webSdkVersion | [Release Notes](https://firebase.google.com/support/release-notes/js) |',

scripts/generate_versions_spm.dart

@@ -10,22 +10,16 @@ import 'dart:io';
 import 'package:cli_util/cli_logging.dart' as logging;
 import 'package:yaml/yaml.dart';
 
-// Used to generate a simple txt file for Package.swift file to parse in order to use correct firebase-ios-sdk version
+import 'firebase_sdk_version_spm.dart';
+
+// Writes scripts/firebase_sdk_version_spm.dart into each plugin Package.swift.
 
 void main(List<String> args) async {
   final workspace = await getMelosWorkspace();
-  // get version from core
-  final firebaseCorePackage = workspace.filteredPackages.values
-      .firstWhere((package) => package.name == 'firebase_core');
-
-  final firebaseCoreIosVersionFile = File(
-    '${firebaseCorePackage.path}/ios/firebase_sdk_version.rb',
-  );
 
-  final firebaseiOSVersion = getFirebaseiOSVersion(firebaseCoreIosVersionFile);
-
-  // Update hard-coded versions in all plugin Package.swift files
-  updatePluginPackageSwiftVersions(workspace, firebaseiOSVersion);
+  // Update hard-coded versions in all plugin Package.swift files.
+  // CocoaPods keeps its own pin in firebase_sdk_version.rb.
+  updatePluginPackageSwiftVersions(workspace, firebaseSpmSdkVersion);
   // Update plugin version in Constants.swift for pure Swift plugins. Unable to pass macros in pure Swift implementations
   updateLibraryVersionPureSwiftPlugins();
 }
@@ -47,23 +41,6 @@ Future<melos.MelosWorkspace> getMelosWorkspace() async {
   return workspace;
 }
 
-String getFirebaseiOSVersion(File firebaseCoreIosSdkVersion) {
-  if (firebaseCoreIosSdkVersion.existsSync()) {
-    final content = firebaseCoreIosSdkVersion.readAsStringSync();
-    final versionMatch = RegExp(r"'(\d+\.\d+\.\d+)'").firstMatch(content);
-
-    if (versionMatch != null && versionMatch.group(1) != null) {
-      return versionMatch.group(1)!;
-    } else {
-      throw Exception(
-        'Firebase iOS SDK version not found in firebase_sdk_version.rb.',
-      );
-    }
-  } else {
-    throw Exception('firebase_sdk_version.rb file does not exist.');
-  }
-}
-
 void updatePluginPackageSwiftVersions(
   melos.MelosWorkspace workspace,
   String firebaseiOSVersion,