Updated the files.

my-app/node_modules/@angular-devkit/build-angular/src/builders/app-shell/schema.d.ts

@@ -0,0 +1,36 @@
+/**
+ * App Shell target options for Build Facade.
+ */
+export interface Schema {
+    /**
+     * Script that exports the Server AppModule to render. This should be the main JavaScript
+     * outputted by the server target. By default we will resolve the outputPath of the
+     * serverTarget and find a bundle named 'main' in it (whether or not there's a hash tag).
+     */
+    appModuleBundle?: string;
+    /**
+     * A browser builder target use for rendering the application shell in the format of
+     * `project:target[:configuration]`. You can also pass in more than one configuration name
+     * as a comma-separated list. Example: `project:target:production,staging`.
+     */
+    browserTarget: string;
+    /**
+     * The input path for the index.html file. By default uses the output index.html of the
+     * browser target.
+     */
+    inputIndexPath?: string;
+    /**
+     * The output path of the index.html file. By default will overwrite the input file.
+     */
+    outputIndexPath?: string;
+    /**
+     * The route to render.
+     */
+    route?: string;
+    /**
+     * A server builder target use for rendering the application shell in the format of
+     * `project:target[:configuration]`. You can also pass in more than one configuration name
+     * as a comma-separated list. Example: `project:target:production,staging`.
+     */
+    serverTarget: string;
+}