List scripts in library and display script source

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;
-        var bin_path = dart_path.substring(0, dart_path.lastIndexOf(Platform.pathSeparator));
-        var dart2js_path = "$bin_path${Platform.pathSeparator}dart2js";
+  var dart_path = Platform.executable;
+  var dart2js_path = 'dart2js';
+  if (dart_path.lastIndexOf(Platform.pathSeparator) != -1) {
+    var bin_path = dart_path.substring(0, dart_path.lastIndexOf(Platform.pathSeparator));
+    dart2js_path = "$bin_path${Platform.pathSeparator}dart2js";
+  }
   var result =
     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");
 }