| Index: packages/js_util/src/js_util_base.dart | 
| diff --git a/packages/js_util/src/js_util_base.dart b/packages/js_util/src/js_util_base.dart | 
| deleted file mode 100644 | 
| index 7f35991c98c4c8d500bf9c9aedb2fdb764b9b082..0000000000000000000000000000000000000000 | 
| --- a/packages/js_util/src/js_util_base.dart | 
| +++ /dev/null | 
| @@ -1,59 +0,0 @@ | 
| -@JS() | 
| -library js_util.base; | 
| - | 
| -import 'package:js/js.dart'; | 
| -import 'package:quiver_iterables/iterables.dart'; | 
| - | 
| -// js_util library uses the technique described in | 
| -// https://github.com/dart-lang/sdk/issues/25053 | 
| -// because dart2js compiler does not support [] operator. | 
| - | 
| -@JS() | 
| -@anonymous | 
| -class PropertyDescription { | 
| -  external factory PropertyDescription( | 
| -      {bool configurable, bool enumerable, value, bool writable}); | 
| -} | 
| - | 
| -/// A wrapper for https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty | 
| -@JS('Object.defineProperty') | 
| -external void defineProperty(o, String prop, PropertyDescription description); | 
| - | 
| -/// Returns `o[prop]`. | 
| -@JS('JsUtil.getValue') | 
| -external getValue(o, String prop); | 
| - | 
| -/// Creates a new JavaScript object. | 
| -@JS('JsUtil.newObject') | 
| -external newObject(); | 
| - | 
| -/// Performs `o[key] = value`. | 
| -void setValue(o, String key, value) { | 
| -  defineProperty(o, key, new PropertyDescription(value: value)); | 
| -} | 
| - | 
| -/// Converts a Dart object to a JavaScript object. | 
| -/// | 
| -/// For example, you can convert a Dart [Map] to a JavaScript object. | 
| -/// | 
| -///     final jsObj = toJS({ | 
| -///       'people': [ | 
| -///         {'firstName': 'Kwang Yul', 'lastName': 'Seo'}, | 
| -///         {'firstName': 'DoHyung', 'lastName': 'Kim'}, | 
| -///         {'firstName': 'Kyusun', 'lastName': 'Kim'} | 
| -///       ] | 
| -///     }); | 
| -/// | 
| -toJS(o) { | 
| -  if (o is Map) { | 
| -    final newObj = newObject(); | 
| -    for (final keyValuePair in zip([o.keys, o.values])) { | 
| -      setValue(newObj, keyValuePair[0], toJS(keyValuePair[1])); | 
| -    } | 
| -    return newObj; | 
| -  } else if (o is List) { | 
| -    return o.map((e) => toJS(e)).toList(); | 
| -  } else { | 
| -    return o; | 
| -  } | 
| -} | 
|  |