Capture Future errors for Flutter Web automatically

Author: marandaneto

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Fixes
+
+- Capture Future errors for Flutter Web automatically ([#1143](https://github.com/getsentry/sentry-dart/pull/1143))
+
 ## 6.16.1
 
 ### Fixes

flutter/lib/src/integrations/flutter_error_integration.dart

@@ -60,11 +60,6 @@ class FlutterErrorIntegration extends Integration<SentryFlutterOptions> {
         final mechanism = Mechanism(
           type: 'FlutterError',
           handled: true,
-          data: {
-            if (flutterErrorDetails.isNotEmpty)
-              'hint':
-                  'See "flutter_error_details" down below for more information'
-          },
         );
         final throwableMechanism = ThrowableMechanism(mechanism, exception);
 

flutter/lib/src/sentry_flutter.dart

@@ -52,7 +52,13 @@ mixin SentryFlutter {
 
     final platformDispatcher = PlatformDispatcher.instance;
     final wrapper = PlatformDispatcherWrapper(platformDispatcher);
-    final isOnErrorSupported = wrapper.isOnErrorSupported(flutterOptions);
+
+    // Flutter Web don't capture [Future] errors if using [PlatformDispatcher.onError] and not
+    // the [runZonedGuarded].
+    // likely due to https://github.com/flutter/flutter/issues/100277
+    final isOnErrorSupported = flutterOptions.platformChecker.isWeb
+        ? false
+        : wrapper.isOnErrorSupported(flutterOptions);
 
     // first step is to install the native integration and set default values,
     // so we are able to capture future errors.

flutter/test/integrations/flutter_error_integration_test.dart

@@ -56,8 +56,6 @@ void main() {
       final throwableMechanism = event.throwableMechanism as ThrowableMechanism;
       expect(throwableMechanism.mechanism.type, 'FlutterError');
       expect(throwableMechanism.mechanism.handled, true);
-      expect(throwableMechanism.mechanism.data['hint'],
-          'See "flutter_error_details" down below for more information');
       expect(throwableMechanism.throwable, exception);
 
       expect(event.contexts['flutter_error_details']['library'], 'sentry');
@@ -92,8 +90,6 @@ void main() {
       final throwableMechanism = event.throwableMechanism as ThrowableMechanism;
       expect(throwableMechanism.mechanism.type, 'FlutterError');
       expect(throwableMechanism.mechanism.handled, true);
-      expect(throwableMechanism.mechanism.data['hint'],
-          'See "flutter_error_details" down below for more information');
 
       expect(event.contexts['flutter_error_details']['library'], 'sentry');
       expect(event.contexts['flutter_error_details']['context'],