chore(android): sync JS fatal crashes via promises

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Fixed
 
 - Fix an issue with `Instabug.init` on Android causing the app to crash while trying to get the current `Application` instance through the current activity which can be `null` in some cases by utilizing the React context instead ([#1069](https://github.com/Instabug/Instabug-React-Native/pull/1069)).
+- Fix an issue with unhandled JavaScript crashes not getting linked with the current session causing inaccurate session metrics ([#1071](https://github.com/Instabug/Instabug-React-Native/pull/1071)).
 
 ## [12.2.0](https://github.com/Instabug/Instabug-React-Native/compare/v12.2.0...v12.1.0)
 

android/src/main/java/com/instabug/reactlibrary/RNInstabugCrashReportingModule.java

@@ -2,6 +2,7 @@
 
 import static com.instabug.reactlibrary.utils.InstabugUtil.getMethod;
 
+import com.facebook.react.bridge.Promise;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
@@ -15,6 +16,7 @@
 import java.lang.reflect.Method;
 
 import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 
 public class RNInstabugCrashReportingModule extends ReactContextBaseJavaModule {
 
@@ -55,12 +57,19 @@ public void run() {
      * Send unhandled JS error object
      *
      * @param exceptionObject Exception object to be sent to Instabug's servers
+     * @param promise This makes sure that the RN side crashes the app only after the Android SDK
+     *                finishes processing/handling the crash.
      */
     @ReactMethod
-    public void sendJSCrash(final String exceptionObject) {
+    public void sendJSCrash(final String exceptionObject, final Promise promise) {
         try {
             JSONObject jsonObject = new JSONObject(exceptionObject);
-            sendJSCrashByReflection(jsonObject, false);
+            sendJSCrashByReflection(jsonObject, false, new Runnable() {
+                @Override
+                public void run() {
+                    promise.resolve(null);
+                }
+            });
         } catch (Exception e) {
             e.printStackTrace();
         }
@@ -75,13 +84,13 @@ public void sendJSCrash(final String exceptionObject) {
     public void sendHandledJSCrash(final String exceptionObject) {
         try {
             JSONObject jsonObject = new JSONObject(exceptionObject);
-            sendJSCrashByReflection(jsonObject, true);
+            sendJSCrashByReflection(jsonObject, true, null);
         } catch (Exception e) {
             e.printStackTrace();
         }
     }
 
-     private void sendJSCrashByReflection(final JSONObject exceptionObject, final boolean isHandled) {
+     private void sendJSCrashByReflection(final JSONObject exceptionObject, final boolean isHandled, @Nullable final Runnable onComplete) {
          MainThreadHandler.runOnMainThread(new Runnable() {
              @Override
              public void run() {
@@ -97,6 +106,10 @@ public void run() {
                      e.printStackTrace();
                  } catch (InvocationTargetException e) {
                      e.printStackTrace();
+                 } finally {
+                     if (onComplete != null) {
+                         onComplete.run();
+                     }
                  }
              }
          });

src/utils/InstabugUtils.ts

@@ -77,14 +77,7 @@ export const captureJsErrors = () => {
     if (process.env.JEST_WORKER_ID) {
       return;
     }
-
-    if (Platform.OS === 'android') {
-      setTimeout(() => {
-        originalErrorHandler(err, isFatal);
-      }, 500);
-    } else {
-      originalErrorHandler(err, isFatal);
-    }
+    originalErrorHandler(err, isFatal);
   });
 };