commit 8a0ac0b3e2fd0f8cc2604707ecd11a81886d18b3
author Sigmund Cherem <sigmund@google.com> Fri Jun 29 21:24:42 2018 +0000
committer Sigmund Cherem <sigmund@google.com> Fri Jun 29 21:24:42 2018 +0000
tree 16b8b156a70a270f762f6a2c1ffcdf1726cb2030
parent 2cbc49546aaf6fb11a9ac9e8d311ef378867f2ec

temporarily add more details in error message for safari.

A test is failing in safari and I plan to suppress it shortly, meanwhile, we are adding a better error message to help us debug it. We are likely going to revert this change shortly.

TBR=sra@google.com

Change-Id: I0d6fc8699c411054e5da73d59b33800879757482
Reviewed-on: https://dart-review.googlesource.com/63301
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Sigmund Cherem <sigmund@google.com>

sdk/lib/html/dart2js/html_dart2js.dart

diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index d984d08..768f130 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -38625,7 +38625,7 @@
   Element upgrade(Element element) {
     // Only exact type matches are supported- cannot be a subclass.
     if (element.runtimeType != _nativeType) {
-      throw new ArgumentError('element is not subclass of $_nativeType');
+      throw new ArgumentError('element $element of type \'${element.runtimeType}\' is not a subclass of $_nativeType');
     }
 
     setNativeSubclassDispatchRecord(element, _interceptor);