- Ensure that classes are finalized before their description is

runtime/bin/vmservice/client/build.dart

 // Copyright (c) 2013, 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.
 
 import 'package:polymer/builder.dart';
 import 'dart:io';
 import 'dart:async';
 
 main() {
   lint()
     .then((_) => deploy()).then(compileToJs);
 }
 
 compileToJs(_) {
   print("Running dart2js");
+        var dart_path = Platform.executable;

[Bob Nystrom, 2013/11/21 21:23:53]

Drive-by comment: The style guide for variables in Dart code is camelCase, not
underscore_separated.

+        var bin_path = dart_path.substring(0, dart_path.lastIndexOf(Platform.pathSeparator));
+        var dart2js_path = "$bin_path${Platform.pathSeparator}dart2js";
   var result =
-    Process.runSync('dart2js',
+    Process.runSync(dart2js_path,
         [ '--minify', '-o', 'out/web/index.html_bootstrap.dart.js',
         'out/web/index.html_bootstrap.dart'], runInShell: true);
   print(result.stdout);
+  print(result.stderr);
+  if (result.exitCode != 0) {
+    print("Running dart2js failed.");
+    exit(result.exitCode);
+  }
   print("Done");
 }