Index: sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart |
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart b/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart |
index 67234b64321795954bbdd6ec2173d651fdf11333..859d65fabcdaa0bd05e04a83fc88b5a94aaf6ec6 100644 |
--- a/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart |
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/runtime_types.dart |
@@ -390,7 +390,8 @@ class TypeCheckMapping implements TypeChecks { |
StringBuffer sb = new StringBuffer(); |
for (ClassElement holder in this) { |
for (ClassElement check in [holder]) { |
- sb.add('${holder.name.slowToString()}.${check.name.slowToString()}, '); |
+ sb.write('${holder.name.slowToString()}.' |
+ '${check.name.slowToString()}, '); |
} |
} |
return '[$sb]'; |