fixes issue #27
diff --git a/lib/build/web_components.dart b/lib/build/web_components.dart
index 4a71606..02ce3c4 100644
--- a/lib/build/web_components.dart
+++ b/lib/build/web_components.dart
@@ -49,7 +49,7 @@
/// A [Transformer] which runs the `initialize` transformer with
/// some special plugins and also inlines the html imports.
class WebComponentsTransformer extends Transformer {
- final Resolvers _resolvers;
+ Resolvers _resolvers;
TransformOptions options;
WebComponentsTransformer(this.options)
@@ -75,7 +75,8 @@
var mainScriptTag = doc.querySelector('script[type="$dartType"]');
var scriptId = uriToAssetId(primaryInput.id,
mainScriptTag.attributes['src'], logger, mainScriptTag.sourceSpan);
-
+
+ _resolvers = new Resolvers.fromMock(dart_sdk.mockSdkSources);
return _resolvers.get(transform, [scriptId]).then((resolver) {
var newScriptId = new AssetId(scriptId.package,
'${path.url.withoutExtension(scriptId.path)}.initialize.dart');