| Index: sdk/lib/_internal/compiler/implementation/lib/js_array.dart | 
| diff --git a/sdk/lib/_internal/compiler/implementation/lib/js_array.dart b/sdk/lib/_internal/compiler/implementation/lib/js_array.dart | 
| index 30e0a39ce3aa9c88bb9cd20ffd894ab7ab95be0a..6852ee931d2c95cfc6c77d17aee0aa8d5c0d2015 100644 | 
| --- a/sdk/lib/_internal/compiler/implementation/lib/js_array.dart | 
| +++ b/sdk/lib/_internal/compiler/implementation/lib/js_array.dart | 
| @@ -247,6 +247,8 @@ class JSArray<E> extends Interceptor implements List<E>, JSIndexable { | 
|  | 
| bool get isEmpty => length == 0; | 
|  | 
| +  bool get isNotEmpty => !isEmpty; | 
| + | 
| String toString() => ToString.iterableToString(this); | 
|  | 
| List<E> toList({ bool growable: true }) => | 
|  |