diff --git a/packages/language-service/src/typescript_host.ts b/packages/language-service/src/typescript_host.ts
index 0b5365efea..71416c8881 100644
--- a/packages/language-service/src/typescript_host.ts
+++ b/packages/language-service/src/typescript_host.ts
@@ -191,7 +191,7 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
 
       let sourceFile = this.getSourceFile(fileName);
       if (sourceFile) {
-        this.context = sourceFile.path;
+        this.context = (sourceFile as any).path || sourceFile.fileName;
         ts.forEachChild(sourceFile, visit);
       }
       return result.length ? result : undefined;
diff --git a/packages/platform-webworker/src/web_workers/shared/serializer.ts b/packages/platform-webworker/src/web_workers/shared/serializer.ts
index 16a62d820b..dbba03316b 100644
--- a/packages/platform-webworker/src/web_workers/shared/serializer.ts
+++ b/packages/platform-webworker/src/web_workers/shared/serializer.ts
@@ -10,6 +10,18 @@ import {Injectable, RenderComponentType, RendererType2, Type, ɵstringify as str
 import {RenderStore} from './render_store';
 
 
+/**
+ * @experimental WebWorker support in Angular is currently experimental.
+ */
+export const enum SerializerTypes {
+  // RendererType2
+  RENDERER_TYPE_2,
+  // Primitive types
+  PRIMITIVE,
+  // An object stored in a RenderStore
+  RENDER_STORE_OBJECT,
+}
+
 /**
  * Any type that does not need to be serialized (string, number, boolean)
  *
@@ -25,18 +37,6 @@ export class LocationType {
       public origin: string) {}
 }
 
-/**
- * @experimental WebWorker support in Angular is currently experimental.
- */
-export const enum SerializerTypes {
-  // RendererType2
-  RENDERER_TYPE_2,
-  // Primitive types
-  PRIMITIVE,
-  // An object stored in a RenderStore
-  RENDER_STORE_OBJECT,
-}
-
 @Injectable()
 export class Serializer {
   constructor(private _renderStore: RenderStore) {}
diff --git a/tools/@angular/tsc-wrapped/src/symbols.ts b/tools/@angular/tsc-wrapped/src/symbols.ts
index 91ccb5c972..9107116b16 100644
--- a/tools/@angular/tsc-wrapped/src/symbols.ts
+++ b/tools/@angular/tsc-wrapped/src/symbols.ts
@@ -51,7 +51,7 @@ export class Symbols {
               // in the parent chain). This doesn't damage the node as the binder unconditionally
               // sets the parent.
               externalReference.expression.parent = externalReference;
-              externalReference.parent = this.sourceFile;
+              externalReference.parent = this.sourceFile as any;
             }
             const from = stripQuotes(externalReference.expression.getText());
             symbols.set(importEqualsDeclaration.name.text, {__symbolic: 'reference', module: from});
diff --git a/tools/@angular/tsc-wrapped/test/typescript.mocks.ts b/tools/@angular/tsc-wrapped/test/typescript.mocks.ts
index c270cc0f8c..39db1d2e37 100644
--- a/tools/@angular/tsc-wrapped/test/typescript.mocks.ts
+++ b/tools/@angular/tsc-wrapped/test/typescript.mocks.ts
@@ -84,6 +84,9 @@ export class MockNode implements ts.Node {
   getText(sourceFile?: ts.SourceFile): string { return ''; }
   getFirstToken(sourceFile?: ts.SourceFile): ts.Node { return null; }
   getLastToken(sourceFile?: ts.SourceFile): ts.Node { return null; }
+  forEachChild<T>(cbNode: (node: ts.Node) => T, cbNodeArray?: (nodes: ts.Node[]) => T): T {
+    return null;
+  }
 }
 
 export class MockIdentifier extends MockNode implements ts.Identifier {