work in progress: observable implementation using detailed change records

lib/observe.dart

Index: lib/observe.dart
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+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/**
+ * A library for observing changes to observable Dart objects.
+ * Similar in spirit to EcmaScript 6
+ * [Object.observe](http://wiki.ecmascript.org/doku.php?id=harmony:observe), but
+ * able to observe expressions as well as objects, so long as the expressions
+ * are computed from observable objects.
+ *
+ * See the [observable] annotation, [Observable] base class, and the [observe]
+ * function.
+ */
+// TODO(jmesserly): this library is independent of web_ui, and can be factored
+// out into its own package. However, the compiler transform for @observable
+// requires web_ui compiler, until we get buildtool support for it.
+library web_ui.observe;
+
+export 'observe/expression.dart';
+export 'observe/list.dart';
+export 'observe/map.dart';
+export 'observe/observable.dart';
+export 'observe/reference.dart';
+export 'observe/set.dart';