work in progress: observable implementation using detailed change records

bin/build_observable.dart

+import 'dart:uri';
+import 'package:web_ui/src/observable_emitter.dart';
+import 'package:web_ui/src/messages.dart';
+import 'package:compiler_unsupported/implementation/tree/tree.dart';
+
+main() {
+  messages = new Messages();
+  var transformed = transformObservables('foo.dart', r'''
+@observable
+class Foo {
+  String bar = 123, baz;
+  var quux;
+  final notMutable;
+  const notMutableAlso;
+  String get notAField => bar;
+}
+''');
+  print(transformed);
+}