fix(android): Capture native exceptions swallowed by Expo's bridgeless error handling

packages/core/RNSentryAndroidTester/app/build.gradle

@@ -37,7 +37,7 @@ android {
     }
 }
 
-android.sourceSets.main.java.srcDirs += ['../../android/src/expo/java']
+android.sourceSets.main.java.srcDirs += ['../../android/expo-handler/src/main/java']
 
 dependencies {
     implementation project(':RNSentry')

packages/core/android/build.gradle

@@ -48,14 +48,12 @@ android {
             } else {
                 java.srcDirs += ['src/oldarch']
             }
-            java.srcDirs += ['src/expo']
         }
     }
 }
 
 dependencies {
     compileOnly files('libs/replay-stubs.jar')
-    compileOnly files('libs/expo-stubs.jar')
     implementation 'com.facebook.react:react-native:+'
     api 'io.sentry:sentry-android:8.36.0'
     debugImplementation 'io.sentry:sentry-spotlight:8.36.0'

packages/core/android/expo-handler/build.gradle

@@ -0,0 +1,20 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 31
+    namespace = "io.sentry.react.expo"
+
+    defaultConfig {
+        minSdkVersion 21
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    compileOnly project(':expo-modules-core')
+    compileOnly 'io.sentry:sentry-android:8.36.0'
+}

packages/core/android/expo-stubs/README.md

@@ -1,6 +1,6 @@
-This module provides stubs for `expo-modules-core` interfaces (`Package` and `ReactNativeHostHandler`) needed to compile the Expo-specific source set (`android/src/expo/`).
+This module provides stubs for `expo-modules-core` interfaces (`Package` and `ReactNativeHostHandler`) needed to compile the Expo handler tests in `RNSentryAndroidTester`.
 
-The Expo source set registers a `ReactNativeHostHandler` that captures native exceptions swallowed by Expo's bridgeless error handling (`ExpoReactHostDelegate.handleInstanceException`). These stubs are added as a `compileOnly` dependency to `android/build.gradle` (meaning, they are not present at runtime). In Expo projects, the real `expo-modules-core` classes are available at runtime via Expo's autolinking.
+The Expo handler (`android/expo-handler/`) registers a `ReactNativeHostHandler` that captures native exceptions swallowed by Expo's bridgeless error handling (`ExpoReactHostDelegate.handleInstanceException`). In Expo projects, the handler is compiled against the real `expo-modules-core` project. For unit testing in `RNSentryAndroidTester` (which doesn't have Expo), these stubs provide the interfaces at compile time.
 
 ## Updating the stubs
 

packages/core/expo-module.config.json

@@ -1,3 +1,7 @@
 {
-  "platforms": ["android"]
+  "platforms": ["android"],
+  "android": {
+    "name": "sentry-react-native-expo",
+    "path": "android/expo-handler"
+  }
 }

packages/core/package.json

@@ -18,14 +18,13 @@
   },
   "main": "dist/js/index.js",
   "scripts": {
-    "build": "npx run-s build:sdk downlevel build:tools build:plugin build:replay-stubs build:expo-stubs",
+    "build": "npx run-s build:sdk downlevel build:tools build:plugin build:replay-stubs",
     "build:sdk": "tsc -p tsconfig.build.json",
     "build:sdk:watch": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
     "build:tools": "tsc -p tsconfig.build.tools.json",
     "build:tools:watch": "tsc -p tsconfig.build.tools.json -w --preserveWatchOutput",
     "build:plugin": "EXPO_NONINTERACTIVE=true expo-module build plugin",
     "build:replay-stubs": "cd android/replay-stubs && ./gradlew jar",
-    "build:expo-stubs": "cd android/expo-stubs && ./gradlew jar",
     "build:tarball": "bash scripts/build-tarball.sh",
     "downlevel": "downlevel-dts dist ts3.8/dist --to=3.8",
     "clean": "rimraf dist coverage && yarn clean:plugin",