[RN] Make yarn the source of truth for native (C++/Kotlin/Java) format

## Summary
Extend yarn-owned formatting to native sources so GitHub CI is the single source
of truth for C/C++/Obj-C, Kotlin, and Java, using the OSS toolchain so internal
(Meta) and GitHub produce byte-identical output:

- Add `scripts/lint/clang-format.sh` (pins clang-format `21.1.2` from PyPI),
  `scripts/lint/ktfmt.sh` (pins ktfmt `0.64` from Maven Central; JDK 17+), and
  `scripts/lint/google-java-format.sh` (pins google-java-format `1.23.0` from
  Maven Central; JDK 17+). Each derives its file list from `git ls-files` and
  honors the existing vendored/generated exclusions.
- Point `yarn clang-format` + `yarn clang-format-check`, `yarn lint-kotlin` +
  `yarn lint-kotlin-check`, and `yarn lint-java` + `yarn lint-java-check` at those
  scripts. `yarn f` now runs Prettier + clang-format + ktfmt + google-java-format.
- Run `clang-format-check`, `ktfmt` (Kotlin), and `google-java-format` (Java) in
  the CI `lint` job (JDK 17 via `setup-java`). ktfmt was previously disabled in
  gradle ("handled inside fbsource"); the repo now owns it.
- Reformat 78 Kotlin files that differed under ktfmt `0.64` (meta style: 2-space
  block indent, 4-space continuation, 100 column, keep unused imports). Java is
  already clean under `1.23.0` (Meta uses the same release), so no Java reformat.

## Changelog
[Internal]

## Test Plan
`yarn clang-format-check`, `yarn lint-kotlin-check`, and `yarn lint-java-check`
(JDK 17) all clean on the synced tree; `yarn f` formats JS + native. The GitHub
`lint` job runs all three native checks on this PR.

Changelog: [Internal]

Author: mattcarrollcode

.github/workflows/test-all.yml

@@ -514,6 +514,20 @@ jobs:
       - name: TypeScript (legacy deep imports / manual types)
         shell: bash
         run: yarn test-typescript-legacy
+      - name: clang-format (C/C++/Obj-C)
+        shell: bash
+        run: yarn run clang-format-check
+      - name: Set up JDK 17
+        uses: actions/setup-java@v5
+        with:
+          java-version: '17'
+          distribution: 'zulu'
+      - name: ktfmt (Kotlin)
+        shell: bash
+        run: yarn run lint-kotlin-check
+      - name: google-java-format (Java)
+        shell: bash
+        run: yarn run lint-java-check
 
   test_js:
     runs-on: ubuntu-latest

package.json

@@ -9,19 +9,22 @@
     "build-android": "./gradlew :packages:react-native:ReactAndroid:build",
     "build": "node ./scripts/build/build.js",
     "build-types": "node ./scripts/js-api/build-types",
-    "clang-format": "clang-format -i --glob=*/**/*.{h,cpp,m,mm}",
+    "clang-format": "./scripts/lint/clang-format.sh",
+    "clang-format-check": "./scripts/lint/clang-format.sh --check",
     "clean": "node ./scripts/build/clean.js",
     "cxx-api-build": "python -m scripts.cxx-api.parser",
     "cxx-api-validate": "python -m scripts.cxx-api.parser --validate",
     "flow-check": "flow full-check",
     "flow": "flow",
-    "f": "yarn prettier",
+    "f": "yarn prettier && yarn clang-format && yarn lint-kotlin && yarn lint-java",
     "format-check": "prettier --list-different \"./**/*.{cjs,cts,flow,js,jsx,md,mjs,mts,ts,tsx,yaml,yml}\"",
-    "format": "yarn prettier && yarn clang-format",
+    "format": "yarn prettier && yarn clang-format && yarn lint-kotlin && yarn lint-java",
     "featureflags": "yarn --cwd packages/react-native featureflags",
     "js-api-diff": "node ./scripts/js-api/diff-api-snapshot",
-    "lint-kotlin-check": "./gradlew ktfmtCheck",
-    "lint-kotlin": "./gradlew ktfmtFormat",
+    "lint-java-check": "./scripts/lint/google-java-format.sh --check",
+    "lint-java": "./scripts/lint/google-java-format.sh",
+    "lint-kotlin-check": "./scripts/lint/ktfmt.sh --check",
+    "lint-kotlin": "./scripts/lint/ktfmt.sh",
     "lint-markdown": "markdownlint-cli2 2>&1",
     "lint": "eslint --max-warnings 0 .",
     "preinstall": "node ./scripts/try-set-hermes-compiler-prebuilt.js",

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactPlugin.kt

@@ -200,42 +200,44 @@ class ReactPlugin : Plugin<Project> {
     }
 
     // We create the tasks to produce schema from JS files and generate artifacts from schema.
-    val generateCodegenArtifactsTask = registerCodegenTasks(
-        project = project,
-        rootExtension = rootExtension,
-        generatedSrcDir = generatedSrcDir,
-        packageJsonFile = { findPackageJsonFile(project, rootExtension.root) },
-        schemaTaskName = "generateCodegenSchemaFromJavaScript",
-        artifactsTaskName = "generateCodegenArtifactsFromSchema",
-        configureJsRoot = { task, packageJson ->
-          // We're reading the package.json at configuration time to properly feed
-          // the `jsRootDir` @Input property of this task & the onlyIf. Therefore, the
-          // parsePackageJson should be invoked inside this lambda.
-          val parsedPackageJson = packageJson?.let { JsonUtils.fromPackageJson(it) }
-          val jsSrcsDirInPackageJson = parsedPackageJson?.codegenConfig?.jsSrcsDir
-
-          if (packageJson != null && jsSrcsDirInPackageJson != null) {
-            task.jsRootDir.set(File(packageJson.parentFile, jsSrcsDirInPackageJson))
-          } else {
-            task.jsRootDir.set(localExtension.jsRootDir)
-          }
-        },
-        configureCodegenArtifacts = { task, _ ->
-          task.codegenJavaPackageName.set(localExtension.codegenJavaPackageName)
-          task.libraryName.set(localExtension.libraryName)
-        },
-        onlyIf = { packageJson ->
-          // Please note that needsCodegenFromPackageJson is triggering a read of the
-          // package.json at configuration time as we need to feed the onlyIf condition of this
-          // task. Therefore, needsCodegenFromPackageJson needs to be invoked inside this
-          // lambda.
-          val needsCodegenFromPackageJson = project.needsCodegenFromPackageJson(rootExtension.root)
-          val parsedPackageJson = packageJson?.let { JsonUtils.fromPackageJson(it) }
-          val includesGeneratedCode =
-              parsedPackageJson?.codegenConfig?.includesGeneratedCode ?: false
-          (isLibrary || needsCodegenFromPackageJson) && !includesGeneratedCode
-        },
-    )
+    val generateCodegenArtifactsTask =
+        registerCodegenTasks(
+            project = project,
+            rootExtension = rootExtension,
+            generatedSrcDir = generatedSrcDir,
+            packageJsonFile = { findPackageJsonFile(project, rootExtension.root) },
+            schemaTaskName = "generateCodegenSchemaFromJavaScript",
+            artifactsTaskName = "generateCodegenArtifactsFromSchema",
+            configureJsRoot = { task, packageJson ->
+              // We're reading the package.json at configuration time to properly feed
+              // the `jsRootDir` @Input property of this task & the onlyIf. Therefore, the
+              // parsePackageJson should be invoked inside this lambda.
+              val parsedPackageJson = packageJson?.let { JsonUtils.fromPackageJson(it) }
+              val jsSrcsDirInPackageJson = parsedPackageJson?.codegenConfig?.jsSrcsDir
+
+              if (packageJson != null && jsSrcsDirInPackageJson != null) {
+                task.jsRootDir.set(File(packageJson.parentFile, jsSrcsDirInPackageJson))
+              } else {
+                task.jsRootDir.set(localExtension.jsRootDir)
+              }
+            },
+            configureCodegenArtifacts = { task, _ ->
+              task.codegenJavaPackageName.set(localExtension.codegenJavaPackageName)
+              task.libraryName.set(localExtension.libraryName)
+            },
+            onlyIf = { packageJson ->
+              // Please note that needsCodegenFromPackageJson is triggering a read of the
+              // package.json at configuration time as we need to feed the onlyIf condition of this
+              // task. Therefore, needsCodegenFromPackageJson needs to be invoked inside this
+              // lambda.
+              val needsCodegenFromPackageJson =
+                  project.needsCodegenFromPackageJson(rootExtension.root)
+              val parsedPackageJson = packageJson?.let { JsonUtils.fromPackageJson(it) }
+              val includesGeneratedCode =
+                  parsedPackageJson?.codegenConfig?.includesGeneratedCode ?: false
+              (isLibrary || needsCodegenFromPackageJson) && !includesGeneratedCode
+            },
+        )
 
     // We update the android configuration to include the generated sources.
     // This is equivalent to this DSL:
@@ -353,13 +355,14 @@ class ReactPlugin : Plugin<Project> {
         project.rootProject.layout.buildDirectory.file("generated/autolinking/autolinking.json")
     val pureCxxDependencies =
         getPureCxxCodegenDependencies(rootGeneratedAutolinkingFile.get().asFile)
-    val pureCxxCodegenTasks = configurePureCxxDependenciesCodegen(
-        project,
-        extension,
-        rootExtension,
-        generatedPureCxxSourceDir,
-        pureCxxDependencies,
-    )
+    val pureCxxCodegenTasks =
+        configurePureCxxDependenciesCodegen(
+            project,
+            extension,
+            rootExtension,
+            generatedPureCxxSourceDir,
+            pureCxxDependencies,
+        )
 
     // We add a task called generateAutolinkingPackageList to do not clash with the existing task
     // called generatePackageList. This can to be renamed once we unlink the rn <-> cli

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/tasks/BundleHermesCTask.kt

@@ -109,12 +109,13 @@ abstract class BundleHermesCTask : DefaultTask() {
 
         val reactNativeDir = reactNativeDir.get().asFile
         val composeScriptFile = File(reactNativeDir, "scripts/compose-source-maps.js")
-        val composeSourceMapsCommand = getComposeSourceMapsCommand(
-            composeScriptFile,
-            packagerSourceMap,
-            compilerSourceMap,
-            outputSourceMap,
-        )
+        val composeSourceMapsCommand =
+            getComposeSourceMapsCommand(
+                composeScriptFile,
+                packagerSourceMap,
+                compilerSourceMap,
+                outputSourceMap,
+            )
         runCommand(composeSourceMapsCommand)
       }
     }

packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/utils/PathUtils.kt

@@ -28,11 +28,12 @@ import org.gradle.api.file.DirectoryProperty
 internal fun detectedEntryFile(
     config: ReactExtension,
     envVariableOverride: String? = null,
-): File = detectEntryFile(
-    entryFile = config.entryFile.orNull?.asFile,
-    reactRoot = config.root.get().asFile,
-    envVariableOverride = envVariableOverride,
-)
+): File =
+    detectEntryFile(
+        entryFile = config.entryFile.orNull?.asFile,
+        reactRoot = config.root.get().asFile,
+        envVariableOverride = envVariableOverride,
+    )
 
 /**
  * Computes the CLI file for React Native. The Algo follows this order:
@@ -41,11 +42,12 @@ internal fun detectedEntryFile(
  * 3. The `node_modules/react-native/cli.js` file if exists
  * 4. Fails otherwise
  */
-internal fun detectedCliFile(config: ReactExtension): File = detectCliFile(
-    project = config.project,
-    reactNativeRoot = config.root.get().asFile,
-    preconfiguredCliFile = config.cliFile.asFile.orNull,
-)
+internal fun detectedCliFile(config: ReactExtension): File =
+    detectCliFile(
+        project = config.project,
+        reactNativeRoot = config.root.get().asFile,
+        preconfiguredCliFile = config.cliFile.asFile.orNull,
+    )
 
 /**
  * Computes the `hermesc` command location. The Algo follows this order:

packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/ReactPluginTest.kt

@@ -127,11 +127,12 @@ class ReactPluginTest {
 
   @Test
   fun taskNameSuffixForDependency_withNonAlphanumericCharacters_encodesThem() {
-    val dependency = ModelAutolinkingDependenciesJson(
-        root = "./node_modules/@foo/bar-baz",
-        name = "@foo/bar-baz",
-        platforms = null,
-    )
+    val dependency =
+        ModelAutolinkingDependenciesJson(
+            root = "./node_modules/@foo/bar-baz",
+            name = "@foo/bar-baz",
+            platforms = null,
+        )
 
     val result = ReactPlugin().taskNameSuffixForDependency(dependency)
 
@@ -143,11 +144,12 @@ class ReactPluginTest {
     val plugin = ReactPlugin()
     val suffixes =
         listOf("@foo/bar", "foo.bar", "foo-bar", "foo_bar", "foo_45_bar").map { name ->
-          val dependency = ModelAutolinkingDependenciesJson(
-              root = "./node_modules/$name",
-              name = name,
-              platforms = null,
-          )
+          val dependency =
+              ModelAutolinkingDependenciesJson(
+                  root = "./node_modules/$name",
+                  name = name,
+                  platforms = null,
+              )
 
           plugin.taskNameSuffixForDependency(dependency)
         }
@@ -157,11 +159,12 @@ class ReactPluginTest {
 
   @Test
   fun taskNameSuffixForDependency_withLocalModuleRoot_usesPackageName() {
-    val dependency = ModelAutolinkingDependenciesJson(
-        root = "./modules/local-module",
-        name = "local-module",
-        platforms = null,
-    )
+    val dependency =
+        ModelAutolinkingDependenciesJson(
+            root = "./modules/local-module",
+            name = "local-module",
+            platforms = null,
+        )
 
     val result = ReactPlugin().taskNameSuffixForDependency(dependency)
 

packages/gradle-plugin/react-native-gradle-plugin/src/test/kotlin/com/facebook/react/model/ModelAutolinkingDependenciesJsonTest.kt

@@ -36,13 +36,13 @@ class ModelAutolinkingDependenciesJsonTest {
     assertThat(ModelAutolinkingDependenciesJson("", "@react-native/package", null).nameCleansed)
         .isEqualTo("react-native_package")
     assertThat(
-        ModelAutolinkingDependenciesJson(
-            "",
-            "@this*is~a(more)complicated/example!of~weird)packages",
-            null,
+            ModelAutolinkingDependenciesJson(
+                    "",
+                    "@this*is~a(more)complicated/example!of~weird)packages",
+                    null,
+                )
+                .nameCleansed
         )
-            .nameCleansed
-    )
         .isEqualTo("this_is_a_more_complicated_example_of_weird_packages")
   }
 }