Index: pkg/dev_compiler/tool/input_sdk/private/js_helper.dart |
diff --git a/pkg/dev_compiler/tool/input_sdk/private/js_helper.dart b/pkg/dev_compiler/tool/input_sdk/private/js_helper.dart |
index d3c372b5d6bd387eb81ca210b0703a367abcf934..09e9a78127dfcd4e99ae0985c87fb64d4e00fa3b 100644 |
--- a/pkg/dev_compiler/tool/input_sdk/private/js_helper.dart |
+++ b/pkg/dev_compiler/tool/input_sdk/private/js_helper.dart |
@@ -33,8 +33,7 @@ const _Patch patch = const _Patch(); |
/// Marks the internal map in dart2js, so that internal libraries can is-check |
// them. |
-abstract class InternalMap { |
-} |
+abstract class InternalMap<K, V> implements Map<K, V> {} |
class Primitives { |
/// Isolate-unique ID for caching [JsClosureMirror.function]. |