From 854f0b749e4f2e91dac46e01aa48509a2784c2c6 Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Wed, 24 Jun 2026 12:06:03 +0200
Subject: [PATCH 01/13] integrate proxy server

---
 .../facebook/react/utils/DependencyUtils.kt   |  9 ++++
 .../react/utils/DependencyUtilsTest.kt        | 51 +++++++++++++++++++
 packages/react-native/package.json            |  2 +-
 .../react-native/scripts/cocoapods/rncore.rb  | 32 ++++++++----
 .../scripts/cocoapods/rndependencies.rb       | 30 +++++++----
 .../scripts/ios-prebuild/hermes.js            | 48 +++++++++++++----
 .../ios-prebuild/reactNativeDependencies.js   | 45 ++++++++++++----
 .../sdks/hermes-engine/hermes-utils.rb        | 28 +++++++---
 8 files changed, 198 insertions(+), 47 deletions(-)

diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
index b686aefa0162..4ee5651cf612 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
@@ -27,6 +27,7 @@ import org.gradle.api.Project
 import org.gradle.api.artifacts.repositories.MavenArtifactRepository
 
 internal object DependencyUtils {
+  private const val REACT_NATIVE_MAVEN_CACHE_URL = "https://rnmaven.swmtest.xyz/"
 
   internal data class Coordinates(
       val versionString: String,
@@ -75,6 +76,14 @@ internal object DependencyUtils {
             repo.content { it.excludeGroup("org.webkit") }
           }
         }
+        if (!hasProperty(INTERNAL_REACT_NATIVE_MAVEN_LOCAL_REPO)) {
+          mavenRepoFromUrl(REACT_NATIVE_MAVEN_CACHE_URL) { repo ->
+            repo.content {
+              it.includeGroupByRegex("com\\.facebook\\.react.*")
+              it.includeGroupByRegex("com\\.facebook\\.hermes.*")
+            }
+          }
+        }
         repositories.mavenCentral { repo ->
           // We don't want to fetch JSC from Maven Central as there are older versions there.
           repo.content { it.excludeGroup("org.webkit") }
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
index 5c57bb296fa4..7726c9a0f265 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
@@ -61,6 +61,21 @@ class DependencyUtilsTest {
         .isNotNull()
   }
 
+  @Test
+  fun configureRepositories_containsReactNativeMavenCache() {
+    val repositoryURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val project = createProject()
+
+    configureRepositories(project, false)
+
+    assertThat(
+            project.repositories.firstOrNull {
+              it is MavenArtifactRepository && it.url == repositoryURI
+            }
+        )
+        .isNotNull()
+  }
+
   @Test
   fun configureRepositories_containsGoogleRepo() {
     val repositoryURI = URI.create("https://dl.google.com/dl/android/maven2/")
@@ -221,6 +236,42 @@ class DependencyUtilsTest {
     assertThat(indexOfLocalRepo < indexOfMavenCentral).isTrue()
   }
 
+  @Test
+  fun configureRepositories_mavenCacheHasHigherPriorityThanMavenCentral() {
+    val mavenCacheURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val mavenCentralURI = URI.create("https://repo.maven.apache.org/maven2/")
+    val project = createProject()
+
+    configureRepositories(project, false)
+
+    val indexOfMavenCache =
+        project.repositories.indexOfFirst {
+          it is MavenArtifactRepository && it.url == mavenCacheURI
+        }
+    val indexOfMavenCentral =
+        project.repositories.indexOfFirst {
+          it is MavenArtifactRepository && it.url == mavenCentralURI
+        }
+    assertThat(indexOfMavenCache < indexOfMavenCentral).isTrue()
+  }
+
+  @Test
+  fun configureRepositories_withProjectPropertySet_doesNotContainMavenCache() {
+    val localMaven = tempFolder.newFolder("m2")
+    val mavenCacheURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val project = createProject()
+    project.extensions.extraProperties.set("react.internal.mavenLocalRepo", localMaven.absolutePath)
+
+    configureRepositories(project, false)
+
+    assertThat(
+            project.repositories.firstOrNull {
+              it is MavenArtifactRepository && it.url == mavenCacheURI
+            }
+        )
+        .isNull()
+  }
+
   @Test
   fun configureRepositories_snapshotRepoHasHigherPriorityThanMavenCentral() {
     val repositoryURI = URI.create("https://central.sonatype.com/repository/maven-snapshots/")
diff --git a/packages/react-native/package.json b/packages/react-native/package.json
index ec26182439fe..ddf4b98c998a 100644
--- a/packages/react-native/package.json
+++ b/packages/react-native/package.json
@@ -167,7 +167,7 @@
     "base64-js": "^1.5.1",
     "commander": "^12.0.0",
     "flow-enums-runtime": "^0.0.6",
-    "hermes-compiler": "0.0.0",
+    "hermes-compiler": "250829098.0.14",
     "invariant": "^2.2.4",
     "memoize-one": "^5.0.0",
     "metro-runtime": "^0.84.3",
diff --git a/packages/react-native/scripts/cocoapods/rncore.rb b/packages/react-native/scripts/cocoapods/rncore.rb
index 252588c98432..972e83ab7d73 100644
--- a/packages/react-native/scripts/cocoapods/rncore.rb
+++ b/packages/react-native/scripts/cocoapods/rncore.rb
@@ -44,6 +44,9 @@ def add_rncore_dependency(s)
 ## - RCT_SYMBOLICATE_PREBUILT_FRAMEWORKS: If set to 1, it will download the dSYMs for the prebuilt RNCore frameworks and install these in the framework folders
 
 class ReactNativeCoreUtils
+    MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
+    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
+
     @@build_from_source = true
     @@react_native_path = ""
     @@react_native_version = ""
@@ -364,16 +367,27 @@ def self.generate_plist_content(mappings)
     end
 
     def self.stable_tarball_url(version, build_type, dsyms = false)
-        ## You can use the `ENTERPRISE_REPOSITORY` ariable to customise the base url from which artifacts will be downloaded.
-        ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-        maven_repo_url =
-            ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != "" ?
-            ENV['ENTERPRISE_REPOSITORY'] :
-            "https://repo1.maven.org/maven2"
+        candidates = stable_tarball_urls(version, build_type, dsyms)
+        return candidates.find { |url| artifact_exists(url) } || candidates.first
+    end
+
+    def self.stable_tarball_urls(version, build_type, dsyms = false)
         group = "com/facebook/react"
-        # Sample url from Maven:
-        # https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/0.81.0/react-native-artifacts-0.81.0-reactnative-core-debug.tar.gz
-        return "#{maven_repo_url}/#{group}/react-native-artifacts/#{version}/react-native-artifacts-#{version}-reactnative-core-#{dsyms ? "dSYM-" : ""}#{build_type.to_s}.tar.gz"
+        return maven_repository_urls().map { |maven_repo_url|
+            # Sample url from Maven:
+            # https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/0.81.0/react-native-artifacts-0.81.0-reactnative-core-debug.tar.gz
+            "#{maven_repo_url}/#{group}/react-native-artifacts/#{version}/react-native-artifacts-#{version}-reactnative-core-#{dsyms ? "dSYM-" : ""}#{build_type.to_s}.tar.gz"
+        }
+    end
+
+    def self.maven_repository_urls()
+        ## You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
+        ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
+        if ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != ""
+            return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
+        end
+
+        return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY]
     end
 
     def self.nightly_tarball_url(version, configuration, dsyms = false)
diff --git a/packages/react-native/scripts/cocoapods/rndependencies.rb b/packages/react-native/scripts/cocoapods/rndependencies.rb
index 1c7fac1a6cb7..5cb4cae75000 100644
--- a/packages/react-native/scripts/cocoapods/rndependencies.rb
+++ b/packages/react-native/scripts/cocoapods/rndependencies.rb
@@ -57,6 +57,9 @@ def add_rn_third_party_dependencies(s)
 end
 
 class ReactNativeDependenciesUtils
+    MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
+    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
+
     @@build_from_source = true
     @@react_native_path = ""
     @@react_native_version = ""
@@ -165,16 +168,25 @@ def self.podspec_source_download_prebuild_release_tarball()
     end
 
     def self.release_tarball_url(version, build_type)
-        ## You can use the `ENTERPRISE_REPOSITORY` ariable to customise the base url from which artifacts will be downloaded.
-        ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-        maven_repo_url =
-            ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != "" ?
-            ENV['ENTERPRISE_REPOSITORY'] :
-            "https://repo1.maven.org/maven2"
+        candidates = release_tarball_urls(version, build_type)
+        return candidates.find { |url| artifact_exists(url) } || candidates.first
+    end
+
+    def self.release_tarball_urls(version, build_type)
         group = "com/facebook/react"
-        # Sample url from Maven:
-        # https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/0.79.0-rc.0/react-native-artifacts-0.79.0-rc.0-reactnative-dependencies-debug.tar.gz
-        return "#{maven_repo_url}/#{group}/react-native-artifacts/#{version}/react-native-artifacts-#{version}-reactnative-dependencies-#{build_type.to_s}.tar.gz"
+        return maven_repository_urls().map { |maven_repo_url|
+            "#{maven_repo_url}/#{group}/react-native-artifacts/#{version}/react-native-artifacts-#{version}-reactnative-dependencies-#{build_type.to_s}.tar.gz"
+        }
+    end
+
+    def self.maven_repository_urls()
+        ## You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
+        ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
+        if ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != ""
+            return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
+        end
+
+        return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY]
     end
 
     def self.nightly_tarball_url(version, build_type)
diff --git a/packages/react-native/scripts/ios-prebuild/hermes.js b/packages/react-native/scripts/ios-prebuild/hermes.js
index eb3df6314352..a7c57049cb0b 100644
--- a/packages/react-native/scripts/ios-prebuild/hermes.js
+++ b/packages/react-native/scripts/ios-prebuild/hermes.js
@@ -17,6 +17,8 @@ const {promisify} = require('util');
 
 const pipeline = promisify(stream.pipeline);
 const hermesLog = createLogger('Hermes');
+const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
+const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
 
 /*::
 import type {BuildFlavor, Destination, Platform} from './types';
@@ -187,16 +189,42 @@ function hermesEngineTarballEnvvarDefined() /*: boolean */ {
   return !!process.env.HERMES_ENGINE_TARBALL_PATH;
 }
 
-function getTarballUrl(
+async function getTarballUrl(
   version /*: string */,
   buildType /*: BuildFlavor */,
-) /*: string */ {
-  // You can use the `ENTERPRISE_REPOSITORY` ariable to customise the base url from which artifacts will be downloaded.
-  // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-  const mavenRepoUrl =
-    process.env.ENTERPRISE_REPOSITORY ?? 'https://repo1.maven.org/maven2';
+) /*: Promise<string> */ {
+  const candidates = getTarballUrls(version, buildType);
+  for (const url of candidates) {
+    console.log(`Checking if Hermes artifact exists at URL: ${url}`);
+    if (await hermesArtifactExists(url)) {
+      console.log(`Found Hermes artifact at URL: ${url}`);
+      return url;
+    }
+    console.log(`Hermes artifact not found at URL: ${url}`);
+  }
+  return candidates[0];
+}
+
+function getTarballUrls(
+  version /*: string */,
+  buildType /*: BuildFlavor */,
+) /*: Array<string> */ {
   const namespace = 'com/facebook/hermes';
-  return `${mavenRepoUrl}/${namespace}/hermes-ios/${version}/hermes-ios-${version}-hermes-ios-${buildType.toLowerCase()}.tar.gz`;
+  return getMavenRepositoryUrls().map(
+    mavenRepoUrl =>
+      `${mavenRepoUrl}/${namespace}/hermes-ios/${version}/hermes-ios-${version}-hermes-ios-${buildType.toLowerCase()}.tar.gz`,
+  );
+}
+
+function getMavenRepositoryUrls() /*: Array<string> */ {
+  // You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
+  // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
+  const enterpriseRepository = process.env.ENTERPRISE_REPOSITORY;
+  if (enterpriseRepository != null && enterpriseRepository !== '') {
+    return [enterpriseRepository.replace(/\/+$/, '')];
+  }
+
+  return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY];
 }
 
 /**
@@ -228,7 +256,7 @@ async function hermesSourceType(
     return HermesEngineSourceTypes.LOCAL_PREBUILT_TARBALL;
   }
 
-  const tarballUrl = getTarballUrl(version, buildType);
+  const tarballUrl = await getTarballUrl(version, buildType);
   if (await hermesArtifactExists(tarballUrl)) {
     hermesLog(`Using download prebuild ${buildType} tarball`);
     return HermesEngineSourceTypes.DOWNLOAD_PREBUILD_TARBALL;
@@ -278,7 +306,7 @@ async function downloadPrebuildTarball(
   buildType /*: BuildFlavor */,
   artifactsPath /*: string*/,
 ) /*: Promise<string> */ {
-  const url = getTarballUrl(version, buildType);
+  const url = await getTarballUrl(version, buildType);
   hermesLog(`Using release tarball from URL: ${url}`);
   return downloadStableHermes(version, buildType, artifactsPath);
 }
@@ -288,7 +316,7 @@ async function downloadStableHermes(
   buildType /*: BuildFlavor */,
   artifactsPath /*: string */,
 ) /*: Promise<string> */ {
-  const tarballUrl = getTarballUrl(version, buildType);
+  const tarballUrl = await getTarballUrl(version, buildType);
   return downloadHermesTarball(tarballUrl, version, buildType, artifactsPath);
 }
 
diff --git a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
index f497338bef8b..ba436f99d1e8 100644
--- a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
+++ b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
@@ -20,6 +20,8 @@ const {promisify} = require('util');
 const pipeline = promisify(stream.pipeline);
 
 const dependencyLog = createLogger('ReactNativeDependencies');
+const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
+const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
 
 /**
  * Downloads ReactNativeDependencies artifacts from the specified version and build type. If you want to specify a specific
@@ -178,16 +180,39 @@ function checkExistingVersion(
   return false;
 }
 
-function getTarballUrl(
+async function getTarballUrl(
   version /*: string */,
   buildType /*: BuildFlavor */,
-) /*: string */ {
-  // You can use the `ENTERPRISE_REPOSITORY` ariable to customise the base url from which artifacts will be downloaded.
-  // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-  const mavenRepoUrl =
-    process.env.ENTERPRISE_REPOSITORY ?? 'https://repo1.maven.org/maven2';
+) /*: Promise<string> */ {
+  const candidates = getTarballUrls(version, buildType);
+  for (const url of candidates) {
+    if (await reactNativeDependenciesArtifactExists(url)) {
+      return url;
+    }
+  }
+  return candidates[0];
+}
+
+function getTarballUrls(
+  version /*: string */,
+  buildType /*: BuildFlavor */,
+) /*: Array<string> */ {
   const namespace = 'com/facebook/react';
-  return `${mavenRepoUrl}/${namespace}/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-${buildType.toLowerCase()}.tar.gz`;
+  return getMavenRepositoryUrls().map(
+    mavenRepoUrl =>
+      `${mavenRepoUrl}/${namespace}/react-native-artifacts/${version}/react-native-artifacts-${version}-reactnative-dependencies-${buildType.toLowerCase()}.tar.gz`,
+  );
+}
+
+function getMavenRepositoryUrls() /*: Array<string> */ {
+  // You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
+  // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
+  const enterpriseRepository = process.env.ENTERPRISE_REPOSITORY;
+  if (enterpriseRepository != null && enterpriseRepository !== '') {
+    return [enterpriseRepository.replace(/\/+$/, '')];
+  }
+
+  return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY];
 }
 
 async function getNightlyTarballUrl(
@@ -230,7 +255,7 @@ async function reactNativeDependenciesSourceType(
   version /*: string */,
   buildType /*: BuildFlavor */,
 ) /*: Promise<ReactNativeDependenciesEngineSourceType> */ {
-  const tarballUrl = getTarballUrl(version, buildType);
+  const tarballUrl = await getTarballUrl(version, buildType);
   if (await reactNativeDependenciesArtifactExists(tarballUrl)) {
     dependencyLog(`Using download prebuild ${buildType} tarball`);
     return ReactNativeDependenciesEngineSourceTypes.DOWNLOAD_PREBUILD_TARBALL;
@@ -273,7 +298,7 @@ async function downloadPrebuildTarball(
   buildType /*: BuildFlavor */,
   artifactsPath /*: string*/,
 ) /*: Promise<string> */ {
-  const url = getTarballUrl(version, buildType);
+  const url = await getTarballUrl(version, buildType);
   dependencyLog(`Using release tarball from URL: ${url}`);
   return downloadStableReactNativeDependencies(
     version,
@@ -302,7 +327,7 @@ async function downloadStableReactNativeDependencies(
   buildType /*: BuildFlavor */,
   artifactsPath /*: string */,
 ) /*: Promise<string> */ {
-  const tarballUrl = getTarballUrl(version, buildType);
+  const tarballUrl = await getTarballUrl(version, buildType);
   return downloadReactNativeDependenciesTarball(
     tarballUrl,
     version,
diff --git a/packages/react-native/sdks/hermes-engine/hermes-utils.rb b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
index 288a5b638543..80ae4001056d 100644
--- a/packages/react-native/sdks/hermes-engine/hermes-utils.rb
+++ b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
@@ -7,6 +7,8 @@
 
 HERMES_GITHUB_URL = "https://github.com/facebook/hermes.git"
 ENV_BUILD_FROM_SOURCE = "RCT_BUILD_HERMES_FROM_SOURCE"
+MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
+REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
 
 module HermesEngineSourceType
     LOCAL_PREBUILT_TARBALL = :local_prebuilt_tarball
@@ -190,17 +192,27 @@ def hermestag_file(react_native_path)
 end
 
 def release_tarball_url(version, build_type)
+    candidates = release_tarball_urls(version, build_type)
+    return candidates.find { |url| hermes_artifact_exists(url) } || candidates.first
+end
+
+def release_tarball_urls(version, build_type)
+    namespace = "com/facebook/hermes"
+    return maven_repository_urls().map { |maven_repo_url|
+        # Sample url from Maven:
+        # https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/0.14.0/hermes-ios-0.14.0-hermes-ios-debug.tar.gz
+        "#{maven_repo_url}/#{namespace}/hermes-ios/#{version}/hermes-ios-#{version}-hermes-ios-#{build_type.to_s}.tar.gz"
+    }
+end
+
+def maven_repository_urls()
     ## You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
     ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-    maven_repo_url =
-        ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != "" ?
-        ENV['ENTERPRISE_REPOSITORY'] :
-        "https://repo1.maven.org/maven2"
+    if ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != ""
+        return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
+    end
 
-    namespace = "com/facebook/hermes"
-    # Sample url from Maven:
-    # https://repo1.maven.org/maven2/com/facebook/hermes/hermes-ios/0.14.0/hermes-ios-0.14.0-hermes-ios-debug.tar.gz
-    return "#{maven_repo_url}/#{namespace}/hermes-ios/#{version}/hermes-ios-#{version}-hermes-ios-#{build_type.to_s}.tar.gz"
+    return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY]
 end
 
 def download_stable_hermes(react_native_path, version, configuration)

From e7d71749f4e4f25fe830648d6a215de30e5f1302 Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Wed, 24 Jun 2026 12:26:46 +0200
Subject: [PATCH 02/13] reduce artifacts exists calls on iOS builds

---
 .../scripts/ios-prebuild/hermes.js            | 30 ++++++++++++++-----
 .../ios-prebuild/reactNativeDependencies.js   | 27 ++++++++++++++---
 2 files changed, 46 insertions(+), 11 deletions(-)

diff --git a/packages/react-native/scripts/ios-prebuild/hermes.js b/packages/react-native/scripts/ios-prebuild/hermes.js
index a7c57049cb0b..b5b5df656324 100644
--- a/packages/react-native/scripts/ios-prebuild/hermes.js
+++ b/packages/react-native/scripts/ios-prebuild/hermes.js
@@ -19,6 +19,7 @@ const pipeline = promisify(stream.pipeline);
 const hermesLog = createLogger('Hermes');
 const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
 const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
+const artifactExistenceCache = new Map();
 
 /*::
 import type {BuildFlavor, Destination, Platform} from './types';
@@ -193,16 +194,25 @@ async function getTarballUrl(
   version /*: string */,
   buildType /*: BuildFlavor */,
 ) /*: Promise<string> */ {
+  const existingUrl = await findExistingTarballUrl(version, buildType);
+  if (existingUrl != null) {
+    return existingUrl;
+  }
+
+  return getTarballUrls(version, buildType)[0];
+}
+
+async function findExistingTarballUrl(
+  version /*: string */,
+  buildType /*: BuildFlavor */,
+) /*: Promise<?string> */ {
   const candidates = getTarballUrls(version, buildType);
   for (const url of candidates) {
-    console.log(`Checking if Hermes artifact exists at URL: ${url}`);
     if (await hermesArtifactExists(url)) {
-      console.log(`Found Hermes artifact at URL: ${url}`);
       return url;
     }
-    console.log(`Hermes artifact not found at URL: ${url}`);
   }
-  return candidates[0];
+  return null;
 }
 
 function getTarballUrls(
@@ -233,13 +243,20 @@ function getMavenRepositoryUrls() /*: Array<string> */ {
 async function hermesArtifactExists(
   tarballUrl /*: string */,
 ) /*: Promise<boolean> */ {
+  if (artifactExistenceCache.has(tarballUrl)) {
+    return artifactExistenceCache.get(tarballUrl);
+  }
+
   try {
     const response /*: Response */ = await fetch(tarballUrl, {
       method: 'HEAD',
     });
 
-    return response.status === 200;
+    const exists = response.status === 200;
+    artifactExistenceCache.set(tarballUrl, exists);
+    return exists;
   } catch (e) {
+    artifactExistenceCache.set(tarballUrl, false);
     return false;
   }
 }
@@ -256,8 +273,7 @@ async function hermesSourceType(
     return HermesEngineSourceTypes.LOCAL_PREBUILT_TARBALL;
   }
 
-  const tarballUrl = await getTarballUrl(version, buildType);
-  if (await hermesArtifactExists(tarballUrl)) {
+  if ((await findExistingTarballUrl(version, buildType)) != null) {
     hermesLog(`Using download prebuild ${buildType} tarball`);
     return HermesEngineSourceTypes.DOWNLOAD_PREBUILD_TARBALL;
   }
diff --git a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
index ba436f99d1e8..dcd6c02ae87a 100644
--- a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
+++ b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
@@ -22,6 +22,7 @@ const pipeline = promisify(stream.pipeline);
 const dependencyLog = createLogger('ReactNativeDependencies');
 const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
 const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
+const artifactExistenceCache = new Map();
 
 /**
  * Downloads ReactNativeDependencies artifacts from the specified version and build type. If you want to specify a specific
@@ -184,13 +185,25 @@ async function getTarballUrl(
   version /*: string */,
   buildType /*: BuildFlavor */,
 ) /*: Promise<string> */ {
+  const existingUrl = await findExistingTarballUrl(version, buildType);
+  if (existingUrl != null) {
+    return existingUrl;
+  }
+
+  return getTarballUrls(version, buildType)[0];
+}
+
+async function findExistingTarballUrl(
+  version /*: string */,
+  buildType /*: BuildFlavor */,
+) /*: Promise<?string> */ {
   const candidates = getTarballUrls(version, buildType);
   for (const url of candidates) {
     if (await reactNativeDependenciesArtifactExists(url)) {
       return url;
     }
   }
-  return candidates[0];
+  return null;
 }
 
 function getTarballUrls(
@@ -237,13 +250,20 @@ async function getNightlyTarballUrl(
 async function reactNativeDependenciesArtifactExists(
   tarballUrl /*: string */,
 ) /*: Promise<boolean> */ {
+  if (artifactExistenceCache.has(tarballUrl)) {
+    return artifactExistenceCache.get(tarballUrl);
+  }
+
   try {
     const response /*: Response */ = await fetch(tarballUrl, {
       method: 'HEAD',
     });
 
-    return response.status === 200;
+    const exists = response.status === 200;
+    artifactExistenceCache.set(tarballUrl, exists);
+    return exists;
   } catch (e) {
+    artifactExistenceCache.set(tarballUrl, false);
     return false;
   }
 }
@@ -255,8 +275,7 @@ async function reactNativeDependenciesSourceType(
   version /*: string */,
   buildType /*: BuildFlavor */,
 ) /*: Promise<ReactNativeDependenciesEngineSourceType> */ {
-  const tarballUrl = await getTarballUrl(version, buildType);
-  if (await reactNativeDependenciesArtifactExists(tarballUrl)) {
+  if ((await findExistingTarballUrl(version, buildType)) != null) {
     dependencyLog(`Using download prebuild ${buildType} tarball`);
     return ReactNativeDependenciesEngineSourceTypes.DOWNLOAD_PREBUILD_TARBALL;
   }

From fa2216495b3eb7f6cced4ee395e368ad7485167e Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Wed, 24 Jun 2026 12:55:10 +0200
Subject: [PATCH 03/13] reduce artifacts exists calls in ruby

---
 packages/react-native/scripts/cocoapods/rncore.rb         | 2 +-
 packages/react-native/scripts/cocoapods/rndependencies.rb | 2 +-
 packages/react-native/sdks/hermes-engine/hermes-utils.rb  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/react-native/scripts/cocoapods/rncore.rb b/packages/react-native/scripts/cocoapods/rncore.rb
index 972e83ab7d73..afa93dd05dea 100644
--- a/packages/react-native/scripts/cocoapods/rncore.rb
+++ b/packages/react-native/scripts/cocoapods/rncore.rb
@@ -489,7 +489,7 @@ def self.download_rncore_tarball(react_native_path, tarball_url, version, config
     end
 
     def self.release_artifact_exists(version)
-        return artifact_exists(stable_tarball_url(version, :debug))
+        return stable_tarball_urls(version, :debug).any? { |url| artifact_exists(url) }
     end
 
     def self.nightly_artifact_exists(version)
diff --git a/packages/react-native/scripts/cocoapods/rndependencies.rb b/packages/react-native/scripts/cocoapods/rndependencies.rb
index 5cb4cae75000..9555f819658e 100644
--- a/packages/react-native/scripts/cocoapods/rndependencies.rb
+++ b/packages/react-native/scripts/cocoapods/rndependencies.rb
@@ -313,7 +313,7 @@ def self.download_rndeps_tarball(react_native_path, tarball_url, version, config
     end
 
     def self.release_artifact_exists(version)
-        return artifact_exists(release_tarball_url(version, :debug))
+        return release_tarball_urls(version, :debug).any? { |url| artifact_exists(url) }
     end
 
     def self.nightly_artifact_exists(version)
diff --git a/packages/react-native/sdks/hermes-engine/hermes-utils.rb b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
index 80ae4001056d..f05c98c59165 100644
--- a/packages/react-native/sdks/hermes-engine/hermes-utils.rb
+++ b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
@@ -91,7 +91,7 @@ def force_build_from_stable_branch(react_native_path)
 end
 
 def release_artifact_exists(version)
-    return hermes_artifact_exists(release_tarball_url(version, :debug))
+    return release_tarball_urls(version, :debug).any? { |url| hermes_artifact_exists(url) }
 end
 
 def podspec_source(source_type, version, react_native_path)

From db9f786b281c8fbdafc8f40ab7d2a90fd675d43d Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Wed, 24 Jun 2026 17:32:28 +0200
Subject: [PATCH 04/13] fix lint issues

---
 packages/react-native/scripts/ios-prebuild/hermes.js       | 7 ++++---
 .../scripts/ios-prebuild/reactNativeDependencies.js        | 7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/packages/react-native/scripts/ios-prebuild/hermes.js b/packages/react-native/scripts/ios-prebuild/hermes.js
index b5b5df656324..3ce8d8195cd9 100644
--- a/packages/react-native/scripts/ios-prebuild/hermes.js
+++ b/packages/react-native/scripts/ios-prebuild/hermes.js
@@ -19,7 +19,7 @@ const pipeline = promisify(stream.pipeline);
 const hermesLog = createLogger('Hermes');
 const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
 const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
-const artifactExistenceCache = new Map();
+const artifactExistenceCache /*: Map<string, boolean> */ = new Map();
 
 /*::
 import type {BuildFlavor, Destination, Platform} from './types';
@@ -243,8 +243,9 @@ function getMavenRepositoryUrls() /*: Array<string> */ {
 async function hermesArtifactExists(
   tarballUrl /*: string */,
 ) /*: Promise<boolean> */ {
-  if (artifactExistenceCache.has(tarballUrl)) {
-    return artifactExistenceCache.get(tarballUrl);
+  const cached = artifactExistenceCache.get(tarballUrl);
+  if (cached != null) {
+    return cached;
   }
 
   try {
diff --git a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
index dcd6c02ae87a..620248abb00b 100644
--- a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
+++ b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
@@ -22,7 +22,7 @@ const pipeline = promisify(stream.pipeline);
 const dependencyLog = createLogger('ReactNativeDependencies');
 const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
 const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
-const artifactExistenceCache = new Map();
+const artifactExistenceCache /*: Map<string, boolean> */ = new Map();
 
 /**
  * Downloads ReactNativeDependencies artifacts from the specified version and build type. If you want to specify a specific
@@ -250,8 +250,9 @@ async function getNightlyTarballUrl(
 async function reactNativeDependenciesArtifactExists(
   tarballUrl /*: string */,
 ) /*: Promise<boolean> */ {
-  if (artifactExistenceCache.has(tarballUrl)) {
-    return artifactExistenceCache.get(tarballUrl);
+  const cached = artifactExistenceCache.get(tarballUrl);
+  if (cached != null) {
+    return cached;
   }
 
   try {

From 4ce6cd378deee0351a41a719f2719c79e64b7f81 Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Fri, 26 Jun 2026 10:05:05 +0200
Subject: [PATCH 05/13] undo hermes-compiler version change

---
 packages/react-native/package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-native/package.json b/packages/react-native/package.json
index ddf4b98c998a..ec26182439fe 100644
--- a/packages/react-native/package.json
+++ b/packages/react-native/package.json
@@ -167,7 +167,7 @@
     "base64-js": "^1.5.1",
     "commander": "^12.0.0",
     "flow-enums-runtime": "^0.0.6",
-    "hermes-compiler": "250829098.0.14",
+    "hermes-compiler": "0.0.0",
     "invariant": "^2.2.4",
     "memoize-one": "^5.0.0",
     "metro-runtime": "^0.84.3",

From 479acf192d7619fd8657392d970033b12385224a Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Fri, 26 Jun 2026 11:23:42 +0200
Subject: [PATCH 06/13] Add reactNativeMavenCacheEnabled flag for toggling
 usage of Maven cache repo

---
 .../facebook/react/utils/DependencyUtils.kt   | 13 ++++++++-
 .../com/facebook/react/utils/PropertyUtils.kt |  4 +++
 .../react/utils/DependencyUtilsTest.kt        | 16 +++++++++++
 .../react-native/scripts/cocoapods/rncore.rb  | 13 ++++++++-
 .../scripts/cocoapods/rndependencies.rb       | 13 ++++++++-
 .../scripts/ios-prebuild/hermes.js            | 15 +---------
 .../ios-prebuild/reactNativeDependencies.js   | 19 ++++---------
 .../scripts/ios-prebuild/utils.js             | 28 +++++++++++++++++++
 .../sdks/hermes-engine/hermes-utils.rb        | 13 ++++++++-
 9 files changed, 102 insertions(+), 32 deletions(-)

diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
index 4ee5651cf612..900acb417b05 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
@@ -14,6 +14,7 @@ import com.facebook.react.utils.PropertyUtils.INCLUDE_JITPACK_REPOSITORY
 import com.facebook.react.utils.PropertyUtils.INCLUDE_JITPACK_REPOSITORY_DEFAULT
 import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_PUBLISHING_GROUP
 import com.facebook.react.utils.PropertyUtils.INTERNAL_HERMES_VERSION_NAME
+import com.facebook.react.utils.PropertyUtils.INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED
 import com.facebook.react.utils.PropertyUtils.INTERNAL_REACT_NATIVE_MAVEN_LOCAL_REPO
 import com.facebook.react.utils.PropertyUtils.INTERNAL_REACT_PUBLISHING_GROUP
 import com.facebook.react.utils.PropertyUtils.INTERNAL_USE_HERMES_NIGHTLY
@@ -76,7 +77,10 @@ internal object DependencyUtils {
             repo.content { it.excludeGroup("org.webkit") }
           }
         }
-        if (!hasProperty(INTERNAL_REACT_NATIVE_MAVEN_LOCAL_REPO)) {
+        // The React Native Maven cache must be added before Maven Central so it can serve cached
+        // artifacts first, while Maven Central remains the fallback.
+        if (!hasProperty(INTERNAL_REACT_NATIVE_MAVEN_LOCAL_REPO) &&
+            isReactNativeMavenCacheEnabled()) {
           mavenRepoFromUrl(REACT_NATIVE_MAVEN_CACHE_URL) { repo ->
             repo.content {
               it.includeGroupByRegex("com\\.facebook\\.react.*")
@@ -280,6 +284,13 @@ internal object DependencyUtils {
         else -> INCLUDE_JITPACK_REPOSITORY_DEFAULT
       }
 
+  internal fun Project.isReactNativeMavenCacheEnabled(): Boolean =
+      when {
+        hasProperty(INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED) ->
+            property(INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED).toString().toBoolean()
+        else -> true
+      }
+
   internal fun String.isNightly(): Boolean = this.startsWith("0.0.0") || "-nightly-" in this
 
   internal fun Project.exclusiveEnterpriseRepository() =
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/PropertyUtils.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/PropertyUtils.kt
index a35e5f37c5d1..111f1439128d 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/PropertyUtils.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/PropertyUtils.kt
@@ -62,6 +62,10 @@ object PropertyUtils {
    */
   const val INTERNAL_REACT_NATIVE_MAVEN_LOCAL_REPO = "react.internal.mavenLocalRepo"
 
+  /** Internal property that controls whether the React Native Maven cache is enabled. */
+  const val INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED =
+      "react.internal.reactNativeMavenCacheEnabled"
+
   /**
    * Internal property used to specify where the Windows Bash executable is located. This is useful
    * for contributors who are running Windows on their machine.
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
index 7726c9a0f265..83dae9725d07 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
@@ -272,6 +272,22 @@ class DependencyUtilsTest {
         .isNull()
   }
 
+  @Test
+  fun configureRepositories_withReactNativeMavenCacheDisabled_doesNotContainMavenCache() {
+    val mavenCacheURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val project = createProject()
+    project.extensions.extraProperties.set("react.internal.reactNativeMavenCacheEnabled", "false")
+
+    configureRepositories(project, false)
+
+    assertThat(
+            project.repositories.firstOrNull {
+              it is MavenArtifactRepository && it.url == mavenCacheURI
+            }
+        )
+        .isNull()
+  }
+
   @Test
   fun configureRepositories_snapshotRepoHasHigherPriorityThanMavenCentral() {
     val repositoryURI = URI.create("https://central.sonatype.com/repository/maven-snapshots/")
diff --git a/packages/react-native/scripts/cocoapods/rncore.rb b/packages/react-native/scripts/cocoapods/rncore.rb
index afa93dd05dea..f7bf6eeaca27 100644
--- a/packages/react-native/scripts/cocoapods/rncore.rb
+++ b/packages/react-native/scripts/cocoapods/rncore.rb
@@ -387,7 +387,18 @@ def self.maven_repository_urls()
             return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
         end
 
-        return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY]
+        # Keep the React Native Maven cache before Maven Central so cached artifacts are tried first
+        # and Maven Central remains the fallback.
+        return react_native_maven_cache_enabled? ?
+            [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY] :
+            [MAVEN_CENTRAL_REPOSITORY]
+    end
+
+    def self.react_native_maven_cache_enabled?()
+        value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
+        return true if value == nil || value == ""
+
+        value.downcase != "false" && value != "0"
     end
 
     def self.nightly_tarball_url(version, configuration, dsyms = false)
diff --git a/packages/react-native/scripts/cocoapods/rndependencies.rb b/packages/react-native/scripts/cocoapods/rndependencies.rb
index 9555f819658e..659387924444 100644
--- a/packages/react-native/scripts/cocoapods/rndependencies.rb
+++ b/packages/react-native/scripts/cocoapods/rndependencies.rb
@@ -186,7 +186,18 @@ def self.maven_repository_urls()
             return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
         end
 
-        return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY]
+        # Keep the React Native Maven cache before Maven Central so cached artifacts are tried first
+        # and Maven Central remains the fallback.
+        return react_native_maven_cache_enabled? ?
+            [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY] :
+            [MAVEN_CENTRAL_REPOSITORY]
+    end
+
+    def self.react_native_maven_cache_enabled?()
+        value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
+        return true if value == nil || value == ""
+
+        value.downcase != "false" && value != "0"
     end
 
     def self.nightly_tarball_url(version, build_type)
diff --git a/packages/react-native/scripts/ios-prebuild/hermes.js b/packages/react-native/scripts/ios-prebuild/hermes.js
index 3ce8d8195cd9..c92848c458ba 100644
--- a/packages/react-native/scripts/ios-prebuild/hermes.js
+++ b/packages/react-native/scripts/ios-prebuild/hermes.js
@@ -8,7 +8,7 @@
  * @format
  */
 
-const {createLogger} = require('./utils');
+const {createLogger, getMavenRepositoryUrls} = require('./utils');
 const {execSync} = require('child_process');
 const fs = require('fs');
 const path = require('path');
@@ -17,8 +17,6 @@ const {promisify} = require('util');
 
 const pipeline = promisify(stream.pipeline);
 const hermesLog = createLogger('Hermes');
-const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
-const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
 const artifactExistenceCache /*: Map<string, boolean> */ = new Map();
 
 /*::
@@ -226,17 +224,6 @@ function getTarballUrls(
   );
 }
 
-function getMavenRepositoryUrls() /*: Array<string> */ {
-  // You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
-  // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-  const enterpriseRepository = process.env.ENTERPRISE_REPOSITORY;
-  if (enterpriseRepository != null && enterpriseRepository !== '') {
-    return [enterpriseRepository.replace(/\/+$/, '')];
-  }
-
-  return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY];
-}
-
 /**
  * Checks if a Hermes artifact exists at the given URL using fetch instead of curl
  */
diff --git a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
index 620248abb00b..05f2b6c18cc4 100644
--- a/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
+++ b/packages/react-native/scripts/ios-prebuild/reactNativeDependencies.js
@@ -10,7 +10,11 @@
 
 /*:: import type {BuildFlavor} from './types'; */
 
-const {computeNightlyTarballURL, createLogger} = require('./utils');
+const {
+  computeNightlyTarballURL,
+  createLogger,
+  getMavenRepositoryUrls,
+} = require('./utils');
 const {execSync} = require('child_process');
 const fs = require('fs');
 const path = require('path');
@@ -20,8 +24,6 @@ const {promisify} = require('util');
 const pipeline = promisify(stream.pipeline);
 
 const dependencyLog = createLogger('ReactNativeDependencies');
-const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
-const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
 const artifactExistenceCache /*: Map<string, boolean> */ = new Map();
 
 /**
@@ -217,17 +219,6 @@ function getTarballUrls(
   );
 }
 
-function getMavenRepositoryUrls() /*: Array<string> */ {
-  // You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
-  // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-  const enterpriseRepository = process.env.ENTERPRISE_REPOSITORY;
-  if (enterpriseRepository != null && enterpriseRepository !== '') {
-    return [enterpriseRepository.replace(/\/+$/, '')];
-  }
-
-  return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY];
-}
-
 async function getNightlyTarballUrl(
   version /*: string */,
   buildType /*: BuildFlavor */,
diff --git a/packages/react-native/scripts/ios-prebuild/utils.js b/packages/react-native/scripts/ios-prebuild/utils.js
index d1c60f838b52..6e017aa90152 100644
--- a/packages/react-native/scripts/ios-prebuild/utils.js
+++ b/packages/react-native/scripts/ios-prebuild/utils.js
@@ -13,6 +13,9 @@
 const {execSync} = require('child_process');
 const fs = require('fs');
 
+const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
+const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
+
 /**
  * Creates a folder if it does not exist
  * @param {string} folderPath - The path to the folder
@@ -102,9 +105,34 @@ async function computeNightlyTarballURL(
   return finalUrl;
 }
 
+function getMavenRepositoryUrls() /*: Array<string> */ {
+  // You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
+  // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
+  const enterpriseRepository = process.env.ENTERPRISE_REPOSITORY;
+  if (enterpriseRepository != null && enterpriseRepository !== '') {
+    return [enterpriseRepository.replace(/\/+$/, '')];
+  }
+
+  // Keep the React Native Maven cache before Maven Central so cached artifacts are tried first
+  // and Maven Central remains the fallback.
+  return isReactNativeMavenCacheEnabled()
+    ? [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY]
+    : [MAVEN_CENTRAL_REPOSITORY];
+}
+
+function isReactNativeMavenCacheEnabled() /*: boolean */ {
+  const value = process.env.RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED;
+  if (value == null || value === '') {
+    return true;
+  }
+
+  return value.toLowerCase() !== 'false' && value !== '0';
+}
+
 module.exports = {
   createFolderIfNotExists,
   throwIfOnEden,
   createLogger,
   computeNightlyTarballURL,
+  getMavenRepositoryUrls,
 };
diff --git a/packages/react-native/sdks/hermes-engine/hermes-utils.rb b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
index f05c98c59165..e48657238399 100644
--- a/packages/react-native/sdks/hermes-engine/hermes-utils.rb
+++ b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
@@ -212,7 +212,18 @@ def maven_repository_urls()
         return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
     end
 
-    return [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY]
+    # Keep the React Native Maven cache before Maven Central so cached artifacts are tried first
+    # and Maven Central remains the fallback.
+    return react_native_maven_cache_enabled? ?
+        [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY] :
+        [MAVEN_CENTRAL_REPOSITORY]
+end
+
+def react_native_maven_cache_enabled?()
+    value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
+    return true if value == nil || value == ""
+
+    value.downcase != "false" && value != "0"
 end
 
 def download_stable_hermes(react_native_path, version, configuration)

From 60b7f96f6685318211cb200df29c7e1473311fac Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Fri, 26 Jun 2026 11:27:26 +0200
Subject: [PATCH 07/13] refactor ruby files

---
 .../react-native/scripts/cocoapods/rncore.rb  | 26 +------------------
 .../scripts/cocoapods/rndependencies.rb       | 26 +------------------
 .../react-native/scripts/cocoapods/utils.rb   | 24 +++++++++++++++++
 3 files changed, 26 insertions(+), 50 deletions(-)

diff --git a/packages/react-native/scripts/cocoapods/rncore.rb b/packages/react-native/scripts/cocoapods/rncore.rb
index f7bf6eeaca27..a0ac7e050d30 100644
--- a/packages/react-native/scripts/cocoapods/rncore.rb
+++ b/packages/react-native/scripts/cocoapods/rncore.rb
@@ -44,9 +44,6 @@ def add_rncore_dependency(s)
 ## - RCT_SYMBOLICATE_PREBUILT_FRAMEWORKS: If set to 1, it will download the dSYMs for the prebuilt RNCore frameworks and install these in the framework folders
 
 class ReactNativeCoreUtils
-    MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
-    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
-
     @@build_from_source = true
     @@react_native_path = ""
     @@react_native_version = ""
@@ -373,34 +370,13 @@ def self.stable_tarball_url(version, build_type, dsyms = false)
 
     def self.stable_tarball_urls(version, build_type, dsyms = false)
         group = "com/facebook/react"
-        return maven_repository_urls().map { |maven_repo_url|
+        return ReactNativePodsUtils.maven_repository_urls().map { |maven_repo_url|
             # Sample url from Maven:
             # https://repo1.maven.org/maven2/com/facebook/react/react-native-artifacts/0.81.0/react-native-artifacts-0.81.0-reactnative-core-debug.tar.gz
             "#{maven_repo_url}/#{group}/react-native-artifacts/#{version}/react-native-artifacts-#{version}-reactnative-core-#{dsyms ? "dSYM-" : ""}#{build_type.to_s}.tar.gz"
         }
     end
 
-    def self.maven_repository_urls()
-        ## You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
-        ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-        if ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != ""
-            return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
-        end
-
-        # Keep the React Native Maven cache before Maven Central so cached artifacts are tried first
-        # and Maven Central remains the fallback.
-        return react_native_maven_cache_enabled? ?
-            [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY] :
-            [MAVEN_CENTRAL_REPOSITORY]
-    end
-
-    def self.react_native_maven_cache_enabled?()
-        value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
-        return true if value == nil || value == ""
-
-        value.downcase != "false" && value != "0"
-    end
-
     def self.nightly_tarball_url(version, configuration, dsyms = false)
         artefact_coordinate = "react-native-artifacts"
         artefact_name = "reactnative-core-#{dsyms ? "dSYM-" : ""}#{configuration ? configuration : "debug"}.tar.gz"
diff --git a/packages/react-native/scripts/cocoapods/rndependencies.rb b/packages/react-native/scripts/cocoapods/rndependencies.rb
index 659387924444..619244b4491b 100644
--- a/packages/react-native/scripts/cocoapods/rndependencies.rb
+++ b/packages/react-native/scripts/cocoapods/rndependencies.rb
@@ -57,9 +57,6 @@ def add_rn_third_party_dependencies(s)
 end
 
 class ReactNativeDependenciesUtils
-    MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
-    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
-
     @@build_from_source = true
     @@react_native_path = ""
     @@react_native_version = ""
@@ -174,32 +171,11 @@ def self.release_tarball_url(version, build_type)
 
     def self.release_tarball_urls(version, build_type)
         group = "com/facebook/react"
-        return maven_repository_urls().map { |maven_repo_url|
+        return ReactNativePodsUtils.maven_repository_urls().map { |maven_repo_url|
             "#{maven_repo_url}/#{group}/react-native-artifacts/#{version}/react-native-artifacts-#{version}-reactnative-dependencies-#{build_type.to_s}.tar.gz"
         }
     end
 
-    def self.maven_repository_urls()
-        ## You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
-        ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
-        if ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != ""
-            return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
-        end
-
-        # Keep the React Native Maven cache before Maven Central so cached artifacts are tried first
-        # and Maven Central remains the fallback.
-        return react_native_maven_cache_enabled? ?
-            [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY] :
-            [MAVEN_CENTRAL_REPOSITORY]
-    end
-
-    def self.react_native_maven_cache_enabled?()
-        value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
-        return true if value == nil || value == ""
-
-        value.downcase != "false" && value != "0"
-    end
-
     def self.nightly_tarball_url(version, build_type)
         artifact_coordinate = "react-native-artifacts"
         artifact_name = "reactnative-dependencies-#{build_type.to_s}.tar.gz"
diff --git a/packages/react-native/scripts/cocoapods/utils.rb b/packages/react-native/scripts/cocoapods/utils.rb
index 0e388d6a7ef5..98602455a672 100644
--- a/packages/react-native/scripts/cocoapods/utils.rb
+++ b/packages/react-native/scripts/cocoapods/utils.rb
@@ -12,11 +12,35 @@
 
 # Utilities class for React Native Cocoapods
 class ReactNativePodsUtils
+    MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
+    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
+
     # URI::File.build validates path components as ASCII, so escape the filesystem path first.
     def self.local_file_uri(path)
         URI::File.build(path: URI::DEFAULT_PARSER.escape(path)).to_s
     end
 
+    def self.maven_repository_urls()
+        ## You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
+        ## The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
+        if ENV['ENTERPRISE_REPOSITORY'] != nil && ENV['ENTERPRISE_REPOSITORY'] != ""
+            return [ENV['ENTERPRISE_REPOSITORY'].delete_suffix("/")]
+        end
+
+        # Keep the React Native Maven cache before Maven Central so cached artifacts are tried first
+        # and Maven Central remains the fallback.
+        return react_native_maven_cache_enabled? ?
+            [REACT_NATIVE_MAVEN_CACHE_REPOSITORY, MAVEN_CENTRAL_REPOSITORY] :
+            [MAVEN_CENTRAL_REPOSITORY]
+    end
+
+    def self.react_native_maven_cache_enabled?()
+        value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
+        return true if value == nil || value == ""
+
+        value.downcase != "false" && value != "0"
+    end
+
     def self.warn_if_not_on_arm64
         if SysctlChecker.new().call_sysctl_arm64() == 1 && !Environment.new().ruby_platform().include?('arm64')
             Pod::UI.warn 'Do not use "pod install" from inside Rosetta2 (x86_64 emulation on arm64).'

From 0e5edbcfe588f206c8b0e6e0d506e4472411048f Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Thu, 23 Jul 2026 15:59:28 +0200
Subject: [PATCH 08/13] change url to https://repo.reactnative.dev/

---
 .../kotlin/com/facebook/react/utils/DependencyUtils.kt    | 2 +-
 .../com/facebook/react/utils/DependencyUtilsTest.kt       | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
index 900acb417b05..d8942ee14050 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
@@ -28,7 +28,7 @@ import org.gradle.api.Project
 import org.gradle.api.artifacts.repositories.MavenArtifactRepository
 
 internal object DependencyUtils {
-  private const val REACT_NATIVE_MAVEN_CACHE_URL = "https://rnmaven.swmtest.xyz/"
+  private const val REACT_NATIVE_MAVEN_CACHE_URL = "https://repo.reactnative.dev/"
 
   internal data class Coordinates(
       val versionString: String,
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
index 83dae9725d07..cc0e3c2f18e2 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
@@ -63,7 +63,7 @@ class DependencyUtilsTest {
 
   @Test
   fun configureRepositories_containsReactNativeMavenCache() {
-    val repositoryURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val repositoryURI = URI.create("https://repo.reactnative.dev/")
     val project = createProject()
 
     configureRepositories(project, false)
@@ -238,7 +238,7 @@ class DependencyUtilsTest {
 
   @Test
   fun configureRepositories_mavenCacheHasHigherPriorityThanMavenCentral() {
-    val mavenCacheURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val mavenCacheURI = URI.create("https://repo.reactnative.dev/")
     val mavenCentralURI = URI.create("https://repo.maven.apache.org/maven2/")
     val project = createProject()
 
@@ -258,7 +258,7 @@ class DependencyUtilsTest {
   @Test
   fun configureRepositories_withProjectPropertySet_doesNotContainMavenCache() {
     val localMaven = tempFolder.newFolder("m2")
-    val mavenCacheURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val mavenCacheURI = URI.create("https://repo.reactnative.dev/")
     val project = createProject()
     project.extensions.extraProperties.set("react.internal.mavenLocalRepo", localMaven.absolutePath)
 
@@ -274,7 +274,7 @@ class DependencyUtilsTest {
 
   @Test
   fun configureRepositories_withReactNativeMavenCacheDisabled_doesNotContainMavenCache() {
-    val mavenCacheURI = URI.create("https://rnmaven.swmtest.xyz/")
+    val mavenCacheURI = URI.create("https://repo.reactnative.dev/")
     val project = createProject()
     project.extensions.extraProperties.set("react.internal.reactNativeMavenCacheEnabled", "false")
 

From aa5c20dcb49f2ada6be31adf04f3a5e8d1e63f8c Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Thu, 23 Jul 2026 16:51:35 +0200
Subject: [PATCH 09/13] change repo url in test files

---
 packages/react-native/scripts/cocoapods/utils.rb         | 2 +-
 packages/react-native/scripts/ios-prebuild/utils.js      | 2 +-
 packages/react-native/sdks/hermes-engine/hermes-utils.rb | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/react-native/scripts/cocoapods/utils.rb b/packages/react-native/scripts/cocoapods/utils.rb
index 98602455a672..77e1af7544aa 100644
--- a/packages/react-native/scripts/cocoapods/utils.rb
+++ b/packages/react-native/scripts/cocoapods/utils.rb
@@ -13,7 +13,7 @@
 # Utilities class for React Native Cocoapods
 class ReactNativePodsUtils
     MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
-    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
+    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://repo.reactnative.dev/"
 
     # URI::File.build validates path components as ASCII, so escape the filesystem path first.
     def self.local_file_uri(path)
diff --git a/packages/react-native/scripts/ios-prebuild/utils.js b/packages/react-native/scripts/ios-prebuild/utils.js
index 6e017aa90152..2a5279248e22 100644
--- a/packages/react-native/scripts/ios-prebuild/utils.js
+++ b/packages/react-native/scripts/ios-prebuild/utils.js
@@ -14,7 +14,7 @@ const {execSync} = require('child_process');
 const fs = require('fs');
 
 const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
-const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://rnmaven.swmtest.xyz';
+const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://repo.reactnative.dev/';
 
 /**
  * Creates a folder if it does not exist
diff --git a/packages/react-native/sdks/hermes-engine/hermes-utils.rb b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
index e48657238399..e361a8f4f4ab 100644
--- a/packages/react-native/sdks/hermes-engine/hermes-utils.rb
+++ b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
@@ -8,7 +8,7 @@
 HERMES_GITHUB_URL = "https://github.com/facebook/hermes.git"
 ENV_BUILD_FROM_SOURCE = "RCT_BUILD_HERMES_FROM_SOURCE"
 MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
-REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://rnmaven.swmtest.xyz"
+REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://repo.reactnative.dev/"
 
 module HermesEngineSourceType
     LOCAL_PREBUILT_TARBALL = :local_prebuilt_tarball

From c0b66198c6e60bc0d23bd9f6716ae6cc68e27f9d Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Fri, 24 Jul 2026 11:34:34 +0200
Subject: [PATCH 10/13] add maven2 to url

---
 .../facebook/react/utils/DependencyUtils.kt   |  2 +-
 .../react/utils/DependencyUtilsTest.kt        |  8 ++---
 .../react-native/scripts/cocoapods/utils.rb   |  2 +-
 .../scripts/ios-prebuild/utils.js             | 33 ++++++++++---------
 .../sdks/hermes-engine/hermes-utils.rb        |  2 +-
 5 files changed, 24 insertions(+), 23 deletions(-)

diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
index d8942ee14050..1fbbe0dc3cf9 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
@@ -28,7 +28,7 @@ import org.gradle.api.Project
 import org.gradle.api.artifacts.repositories.MavenArtifactRepository
 
 internal object DependencyUtils {
-  private const val REACT_NATIVE_MAVEN_CACHE_URL = "https://repo.reactnative.dev/"
+  private const val REACT_NATIVE_MAVEN_CACHE_URL = "https://repo.reactnative.dev/maven2"
 
   internal data class Coordinates(
       val versionString: String,
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
index cc0e3c2f18e2..955ed51d6f7f 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
@@ -63,7 +63,7 @@ class DependencyUtilsTest {
 
   @Test
   fun configureRepositories_containsReactNativeMavenCache() {
-    val repositoryURI = URI.create("https://repo.reactnative.dev/")
+    val repositoryURI = URI.create("https://repo.reactnative.dev/maven2")
     val project = createProject()
 
     configureRepositories(project, false)
@@ -238,7 +238,7 @@ class DependencyUtilsTest {
 
   @Test
   fun configureRepositories_mavenCacheHasHigherPriorityThanMavenCentral() {
-    val mavenCacheURI = URI.create("https://repo.reactnative.dev/")
+    val mavenCacheURI = URI.create("https://repo.reactnative.dev/maven2")
     val mavenCentralURI = URI.create("https://repo.maven.apache.org/maven2/")
     val project = createProject()
 
@@ -258,7 +258,7 @@ class DependencyUtilsTest {
   @Test
   fun configureRepositories_withProjectPropertySet_doesNotContainMavenCache() {
     val localMaven = tempFolder.newFolder("m2")
-    val mavenCacheURI = URI.create("https://repo.reactnative.dev/")
+    val mavenCacheURI = URI.create("https://repo.reactnative.dev/maven2")
     val project = createProject()
     project.extensions.extraProperties.set("react.internal.mavenLocalRepo", localMaven.absolutePath)
 
@@ -274,7 +274,7 @@ class DependencyUtilsTest {
 
   @Test
   fun configureRepositories_withReactNativeMavenCacheDisabled_doesNotContainMavenCache() {
-    val mavenCacheURI = URI.create("https://repo.reactnative.dev/")
+    val mavenCacheURI = URI.create("https://repo.reactnative.dev/maven2")
     val project = createProject()
     project.extensions.extraProperties.set("react.internal.reactNativeMavenCacheEnabled", "false")
 
diff --git a/packages/react-native/scripts/cocoapods/utils.rb b/packages/react-native/scripts/cocoapods/utils.rb
index 77e1af7544aa..4f5c3f95e9ac 100644
--- a/packages/react-native/scripts/cocoapods/utils.rb
+++ b/packages/react-native/scripts/cocoapods/utils.rb
@@ -13,7 +13,7 @@
 # Utilities class for React Native Cocoapods
 class ReactNativePodsUtils
     MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
-    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://repo.reactnative.dev/"
+    REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://repo.reactnative.dev/maven2"
 
     # URI::File.build validates path components as ASCII, so escape the filesystem path first.
     def self.local_file_uri(path)
diff --git a/packages/react-native/scripts/ios-prebuild/utils.js b/packages/react-native/scripts/ios-prebuild/utils.js
index 2a5279248e22..df4f55710d41 100644
--- a/packages/react-native/scripts/ios-prebuild/utils.js
+++ b/packages/react-native/scripts/ios-prebuild/utils.js
@@ -8,20 +8,21 @@
  * @format
  */
 
-/*:: import type {BuildFlavor, MavenSubGroup} from './types'; */
+import type {BuildFlavor, MavenSubGroup} from './types';
 
 const {execSync} = require('child_process');
 const fs = require('fs');
 
 const MAVEN_CENTRAL_REPOSITORY = 'https://repo1.maven.org/maven2';
-const REACT_NATIVE_MAVEN_CACHE_REPOSITORY = 'https://repo.reactnative.dev/';
+const REACT_NATIVE_MAVEN_CACHE_REPOSITORY =
+  'https://repo.reactnative.dev/maven2';
 
 /**
  * Creates a folder if it does not exist
  * @param {string} folderPath - The path to the folder
  * @returns {string} The path to the created or existing folder
  */
-function createFolderIfNotExists(folderPath /*:string*/) /*: string */ {
+function createFolderIfNotExists(folderPath: string): string {
   if (!fs.existsSync(folderPath)) {
     fs.mkdirSync(folderPath, {recursive: true});
     if (!fs.existsSync(folderPath)) {
@@ -43,15 +44,15 @@ function throwIfOnEden() {
 }
 
 function createLogger(
-  prefix /*: string */,
-) /*: (message: string, level?: 'info' | 'warning' | 'error') => void */ {
+  prefix: string,
+): (message: string, level?: 'info' | 'warning' | 'error') => void {
   return function (
-    message /*: string */,
-    level /*: 'info' | 'warning' | 'error' */ = 'info',
+    message: string,
+    level: 'info' | 'warning' | 'error' = 'info',
   ) {
     // Simple log coloring for terminal output
     const resolvedPrefix = `[${prefix}] `;
-    let colorFn = (x /*:string*/) => x;
+    let colorFn = (x: string) => x;
     if (process.stdout.isTTY) {
       if (level === 'info') colorFn = x => `\x1b[32m${x}\x1b[0m`;
       else if (level === 'error') colorFn = x => `\x1b[31m${x}\x1b[0m`;
@@ -63,12 +64,12 @@ function createLogger(
 }
 
 async function computeNightlyTarballURL(
-  version /*: string */,
-  buildType /*: BuildFlavor */,
-  subGroup /*: MavenSubGroup */,
-  artifactCoordinate /*: string */,
-  artifactName /*: string */,
-) /*: Promise<string> */ {
+  version: string,
+  buildType: BuildFlavor,
+  subGroup: MavenSubGroup,
+  artifactCoordinate: string,
+  artifactName: string,
+): Promise<string> {
   const xmlUrl = `https://central.sonatype.com/repository/maven-snapshots/com/facebook/${subGroup}/${artifactCoordinate}/${version}-SNAPSHOT/maven-metadata.xml`;
 
   const response = await fetch(xmlUrl);
@@ -105,7 +106,7 @@ async function computeNightlyTarballURL(
   return finalUrl;
 }
 
-function getMavenRepositoryUrls() /*: Array<string> */ {
+function getMavenRepositoryUrls(): Array<string> {
   // You can use the `ENTERPRISE_REPOSITORY` variable to customise the base url from which artifacts will be downloaded.
   // The mirror's structure must be the same of the Maven repo the react-native core team publishes on Maven Central.
   const enterpriseRepository = process.env.ENTERPRISE_REPOSITORY;
@@ -120,7 +121,7 @@ function getMavenRepositoryUrls() /*: Array<string> */ {
     : [MAVEN_CENTRAL_REPOSITORY];
 }
 
-function isReactNativeMavenCacheEnabled() /*: boolean */ {
+function isReactNativeMavenCacheEnabled(): boolean {
   const value = process.env.RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED;
   if (value == null || value === '') {
     return true;
diff --git a/packages/react-native/sdks/hermes-engine/hermes-utils.rb b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
index e361a8f4f4ab..2f43ef1139e9 100644
--- a/packages/react-native/sdks/hermes-engine/hermes-utils.rb
+++ b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
@@ -8,7 +8,7 @@
 HERMES_GITHUB_URL = "https://github.com/facebook/hermes.git"
 ENV_BUILD_FROM_SOURCE = "RCT_BUILD_HERMES_FROM_SOURCE"
 MAVEN_CENTRAL_REPOSITORY = "https://repo1.maven.org/maven2"
-REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://repo.reactnative.dev/"
+REACT_NATIVE_MAVEN_CACHE_REPOSITORY = "https://repo.reactnative.dev/maven2"
 
 module HermesEngineSourceType
     LOCAL_PREBUILT_TARBALL = :local_prebuilt_tarball

From f3262d5aeaa17969eefffa48c902d4a0e65520d8 Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Fri, 24 Jul 2026 15:17:56 +0200
Subject: [PATCH 11/13] set cache to false by default

---
 .../facebook/react/utils/DependencyUtils.kt   |  2 +-
 .../react/utils/DependencyUtilsTest.kt        | 19 ++++++++++++++++++-
 .../react-native/scripts/cocoapods/utils.rb   |  2 +-
 .../scripts/ios-prebuild/utils.js             |  2 +-
 .../sdks/hermes-engine/hermes-utils.rb        |  2 +-
 5 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
index 1fbbe0dc3cf9..2db330b92325 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
@@ -288,7 +288,7 @@ internal object DependencyUtils {
       when {
         hasProperty(INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED) ->
             property(INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED).toString().toBoolean()
-        else -> true
+        else -> false
       }
 
   internal fun String.isNightly(): Boolean = this.startsWith("0.0.0") || "-nightly-" in this
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
index 955ed51d6f7f..539365029c9b 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
@@ -62,9 +62,10 @@ class DependencyUtilsTest {
   }
 
   @Test
-  fun configureRepositories_containsReactNativeMavenCache() {
+  fun configureRepositories_withReactNativeMavenCacheEnabled_containsMavenCache() {
     val repositoryURI = URI.create("https://repo.reactnative.dev/maven2")
     val project = createProject()
+    project.extensions.extraProperties.set("react.internal.reactNativeMavenCacheEnabled", "true")
 
     configureRepositories(project, false)
 
@@ -241,6 +242,7 @@ class DependencyUtilsTest {
     val mavenCacheURI = URI.create("https://repo.reactnative.dev/maven2")
     val mavenCentralURI = URI.create("https://repo.maven.apache.org/maven2/")
     val project = createProject()
+    project.extensions.extraProperties.set("react.internal.reactNativeMavenCacheEnabled", "true")
 
     configureRepositories(project, false)
 
@@ -272,6 +274,21 @@ class DependencyUtilsTest {
         .isNull()
   }
 
+  @Test
+  fun configureRepositories_byDefault_doesNotContainMavenCache() {
+    val mavenCacheURI = URI.create("https://repo.reactnative.dev/maven2")
+    val project = createProject()
+
+    configureRepositories(project, false)
+
+    assertThat(
+            project.repositories.firstOrNull {
+              it is MavenArtifactRepository && it.url == mavenCacheURI
+            }
+        )
+        .isNull()
+  }
+
   @Test
   fun configureRepositories_withReactNativeMavenCacheDisabled_doesNotContainMavenCache() {
     val mavenCacheURI = URI.create("https://repo.reactnative.dev/maven2")
diff --git a/packages/react-native/scripts/cocoapods/utils.rb b/packages/react-native/scripts/cocoapods/utils.rb
index 4f5c3f95e9ac..8eed03174686 100644
--- a/packages/react-native/scripts/cocoapods/utils.rb
+++ b/packages/react-native/scripts/cocoapods/utils.rb
@@ -36,7 +36,7 @@ def self.maven_repository_urls()
 
     def self.react_native_maven_cache_enabled?()
         value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
-        return true if value == nil || value == ""
+        return false if value == nil || value == ""
 
         value.downcase != "false" && value != "0"
     end
diff --git a/packages/react-native/scripts/ios-prebuild/utils.js b/packages/react-native/scripts/ios-prebuild/utils.js
index df4f55710d41..580cd9b12145 100644
--- a/packages/react-native/scripts/ios-prebuild/utils.js
+++ b/packages/react-native/scripts/ios-prebuild/utils.js
@@ -124,7 +124,7 @@ function getMavenRepositoryUrls(): Array<string> {
 function isReactNativeMavenCacheEnabled(): boolean {
   const value = process.env.RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED;
   if (value == null || value === '') {
-    return true;
+    return false;
   }
 
   return value.toLowerCase() !== 'false' && value !== '0';
diff --git a/packages/react-native/sdks/hermes-engine/hermes-utils.rb b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
index 2f43ef1139e9..9397ac60e470 100644
--- a/packages/react-native/sdks/hermes-engine/hermes-utils.rb
+++ b/packages/react-native/sdks/hermes-engine/hermes-utils.rb
@@ -221,7 +221,7 @@ def maven_repository_urls()
 
 def react_native_maven_cache_enabled?()
     value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
-    return true if value == nil || value == ""
+    return false if value == nil || value == ""
 
     value.downcase != "false" && value != "0"
 end

From 4d1499ed883ecc99ab731c529f0bca8133a1cb22 Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Fri, 24 Jul 2026 15:24:27 +0200
Subject: [PATCH 12/13] add iOS tests

---
 .../__tests__/maven_cache_flag-test.rb        | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 packages/react-native/scripts/cocoapods/__tests__/maven_cache_flag-test.rb

diff --git a/packages/react-native/scripts/cocoapods/__tests__/maven_cache_flag-test.rb b/packages/react-native/scripts/cocoapods/__tests__/maven_cache_flag-test.rb
new file mode 100644
index 000000000000..8bce687926b3
--- /dev/null
+++ b/packages/react-native/scripts/cocoapods/__tests__/maven_cache_flag-test.rb
@@ -0,0 +1,42 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+require "test/unit"
+require_relative "../utils.rb"
+require_relative "../../../sdks/hermes-engine/hermes-utils.rb"
+
+class MavenCacheFlagTests < Test::Unit::TestCase
+    def setup
+        @original_value = ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED']
+        ENV.delete('RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED')
+    end
+
+    def teardown
+        if @original_value == nil
+            ENV.delete('RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED')
+        else
+            ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED'] = @original_value
+        end
+    end
+
+    def test_mavenCache_isDisabledByDefault
+        assert_false(ReactNativePodsUtils.react_native_maven_cache_enabled?)
+        assert_false(react_native_maven_cache_enabled?)
+    end
+
+    def test_mavenCache_isEnabledWhenExplicitlySetToTrue
+        ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED'] = 'true'
+
+        assert_true(ReactNativePodsUtils.react_native_maven_cache_enabled?)
+        assert_true(react_native_maven_cache_enabled?)
+    end
+
+    def test_mavenCache_isDisabledWhenExplicitlySetToFalse
+        ENV['RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED'] = 'false'
+
+        assert_false(ReactNativePodsUtils.react_native_maven_cache_enabled?)
+        assert_false(react_native_maven_cache_enabled?)
+    end
+end

From f40fea30958e1222fd939313ddbbbd4af0c82b5f Mon Sep 17 00:00:00 2001
From: Dawid Malecki <dawid.malecki21@gmail.com>
Date: Fri, 24 Jul 2026 17:45:48 +0200
Subject: [PATCH 13/13] check env var on Android

---
 .../facebook/react/utils/DependencyUtils.kt   |  8 +++++-
 .../react/utils/DependencyUtilsTest.kt        | 28 +++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
index 2db330b92325..4ab21ee29b0f 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/DependencyUtils.kt
@@ -29,6 +29,8 @@ import org.gradle.api.artifacts.repositories.MavenArtifactRepository
 
 internal object DependencyUtils {
   private const val REACT_NATIVE_MAVEN_CACHE_URL = "https://repo.reactnative.dev/maven2"
+  private const val REACT_NATIVE_MAVEN_CACHE_ENABLED_ENV =
+      "RCT_REACT_NATIVE_MAVEN_CACHE_ENABLED"
 
   internal data class Coordinates(
       val versionString: String,
@@ -284,10 +286,14 @@ internal object DependencyUtils {
         else -> INCLUDE_JITPACK_REPOSITORY_DEFAULT
       }
 
-  internal fun Project.isReactNativeMavenCacheEnabled(): Boolean =
+  internal fun Project.isReactNativeMavenCacheEnabled(
+      environmentValue: String? = System.getenv(REACT_NATIVE_MAVEN_CACHE_ENABLED_ENV)
+  ): Boolean =
       when {
         hasProperty(INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED) ->
             property(INTERNAL_REACT_NATIVE_MAVEN_CACHE_ENABLED).toString().toBoolean()
+        !environmentValue.isNullOrEmpty() ->
+            !environmentValue.equals("false", ignoreCase = true) && environmentValue != "0"
         else -> false
       }
 
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
index 539365029c9b..93a8b823da97 100644
--- a/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
+++ b/packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/utils/DependencyUtilsTest.kt
@@ -12,6 +12,7 @@ import com.facebook.react.utils.DependencyUtils.configureDependencies
 import com.facebook.react.utils.DependencyUtils.configureRepositories
 import com.facebook.react.utils.DependencyUtils.exclusiveEnterpriseRepository
 import com.facebook.react.utils.DependencyUtils.getDependencySubstitutions
+import com.facebook.react.utils.DependencyUtils.isReactNativeMavenCacheEnabled
 import com.facebook.react.utils.DependencyUtils.isNightly
 import com.facebook.react.utils.DependencyUtils.mavenRepoFromURI
 import com.facebook.react.utils.DependencyUtils.mavenRepoFromUrl
@@ -305,6 +306,33 @@ class DependencyUtilsTest {
         .isNull()
   }
 
+  @Test
+  fun isReactNativeMavenCacheEnabled_withEnvironmentVariableEnabled_returnsTrue() {
+    val project = createProject()
+
+    assertThat(project.isReactNativeMavenCacheEnabled("true")).isTrue()
+    assertThat(project.isReactNativeMavenCacheEnabled("1")).isTrue()
+  }
+
+  @Test
+  fun isReactNativeMavenCacheEnabled_withEnvironmentVariableDisabled_returnsFalse() {
+    val project = createProject()
+
+    assertThat(project.isReactNativeMavenCacheEnabled(null)).isFalse()
+    assertThat(project.isReactNativeMavenCacheEnabled("")).isFalse()
+    assertThat(project.isReactNativeMavenCacheEnabled("false")).isFalse()
+    assertThat(project.isReactNativeMavenCacheEnabled("FALSE")).isFalse()
+    assertThat(project.isReactNativeMavenCacheEnabled("0")).isFalse()
+  }
+
+  @Test
+  fun isReactNativeMavenCacheEnabled_withProjectProperty_ignoresEnvironmentVariable() {
+    val project = createProject()
+    project.extensions.extraProperties.set("react.internal.reactNativeMavenCacheEnabled", "false")
+
+    assertThat(project.isReactNativeMavenCacheEnabled("true")).isFalse()
+  }
+
   @Test
   fun configureRepositories_snapshotRepoHasHigherPriorityThanMavenCentral() {
     val repositoryURI = URI.create("https://central.sonatype.com/repository/maven-snapshots/")