Enable Try Dart to run on IE11.

site/try/src/compiler_isolate.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.
 
 library compiler_isolate;
 
 import 'dart:async';
 import 'dart:html';
 import 'dart:isolate';
 import 'dart:convert' show JSON;
 
 import 'compilation.dart' show PRIVATE_SCHEME;
 
 import 'package:compiler/compiler.dart' as compiler;
 
 import 'package:dart2js_incremental/dart2js_incremental.dart' show
     reuseCompiler;
 
-const bool THROW_ON_ERROR = false;
+ const bool THROW_ON_ERROR = false;

[ahe, 2014/07/21 08:15:59]

Undo this :-)

[aam-me, 2014/07/21 12:20:38]

Done.

 
 final cachedSources = new Map<Uri, Future<String>>();
 
 Uri sdkLocation;
 List options = [];
 
+var communicateViaBlobs;
+
 var cachedCompiler;
 
 void notifyDartHtml(SendPort port) {
   // Notify the controlling isolate (Try Dart UI) that the program imports
   // dart:html. This is used to determine how to run the program: in an iframe
   // or in a worker.
   port.send('dart:html');
 }
 
 compile(source, SendPort replyTo) {
@@ skipping 14 matching lines @@
       sdkLocation = Uri.parse(source);
     }
     replyTo.send(null);
     return;
   }
   if (source is List) {
     String messageType = (source.length > 0) ? source[0] : null;
     var data = (source.length > 1) ? source[1] : null;
     if (messageType == 'options') {
       options = data as List;
+    } if (messageType == 'communicateViaBlobs') {
+      communicateViaBlobs = data as bool;
     }
     return;
   }
   int charactersRead = 0;
   Future<String> inputProvider(Uri uri) {
     Future<String> future;
     if (uri.scheme == 'sdk') {
       if (uri.path.endsWith('/lib/html/dart2js/html_dart2js.dart')) {
         notifyDartHtml(replyTo);
       }
@@ skipping 51 matching lines @@
     }
     String js = cachedCompiler.assembledCode;
     if (js == null) {
       if (!options.contains('--analyze-only')) replyTo.send('failed');
     } else {
       var url;
       handler(null, 0, 0,
               'Compiled ${source.length}/${charactersRead} characters Dart'
               ' -> ${js.length} characters.',
               compiler.Diagnostic.VERBOSE_INFO);
-      try {
-        // At least Safari and Firefox do not support creating an
-        // object URL from a web worker.  MDN claims that it will be
-        // supported in Firefox 21.
-        url = Url.createObjectUrl(new Blob([js], 'application/javascript'));
-      } catch (_) {
-        // Ignored.
+      if (communicateViaBlobs) {
+        try {
+          // At least Safari and Firefox do not support creating an
+          // object URL from a web worker.  MDN claims that it will be
+          // supported in Firefox 21.
+          url = Url.createObjectUrl(new Blob([js], 'application/javascript'));
+        } catch (_) {
+          // Ignored.
+        }
+      } else  {
+        url = null;
       }
       if (url != null) {
         replyTo.send(['url', url]);
       } else {
         replyTo.send(['code', js]);
       }
     }
   }).catchError((e, trace) {
     replyTo.send(['crash', '$e, $trace']);
   }).whenComplete(() {
     replyTo.send('done');
   });
 }
 
 void main(List<String> arguments, SendPort port) {
   ReceivePort replyTo = new ReceivePort();
   port.send(replyTo.sendPort);
   replyTo.listen((message) {
     try {
       List list = message as List;
       compile(list[0], list[1]);
     } catch (exception, stack) {
       port.send('$exception\n$stack');
     }
   });
 }