Fix some TS

Author: NullVoxPopuli

files/demo-app/app.gts

@@ -9,21 +9,21 @@ class Router extends EmberRouter {
 
 export class App extends EmberApp {
   /**
-  * Any services or anything from the addon that needs to be in the app-tree registry
-  * will need to be manually specified here.
-  *
-  * Techniques to avoid needing this:
-  * - private services
-  * - require the consuming app import and configure themselves
-  *   (which is what we're emulating here)
-  */
+   * Any services or anything from the addon that needs to be in the app-tree registry
+   * will need to be manually specified here.
+   *
+   * Techniques to avoid needing this:
+   * - private services
+   * - require the consuming app import and configure themselves
+   *   (which is what we're emulating here)
+   */
   modules = {
     './router': Router,
     './services/page-title': PageTitleService,
-      /**
-        * NOTE: this glob will import everything matching the glob,
-        *     and includes non-services in the services directory.
-        */
+    /**
+     * NOTE: this glob will import everything matching the glob,
+     *     and includes non-services in the services directory.
+     */
     ...import.meta.glob('./services/**/*', { eager: true }),
     /**
      * These imports are not magic, but we do require that all entries in the
@@ -35,4 +35,4 @@ export class App extends EmberApp {
   };
 }
 
-Router.map(function() { });
+Router.map(function () {});

files/tsconfig.json

@@ -5,7 +5,7 @@
  */
 {
   "extends": "@ember/app-tsconfig",
-  "include": ["src/**/*", "tests/**/*", "unpublished-development-types/**/*"],
+  "include": ["src/**/*", "tests/**/*", "unpublished-development-types/**/*", "demo-app/**/*"],
   "compilerOptions": {
     "rootDir": ".",
     "types": [