stub out angular app with webpack 4

src/app/app.component.ts

@@ -0,0 +1,21 @@
+import {
+    ToasterConfig,
+    ToasterContainerComponent,
+} from 'angular2-toaster';
+import { Angulartics2GoogleAnalytics } from 'angulartics2/ga';
+
+import {
+    Component,
+} from '@angular/core';
+import { Router } from '@angular/router';
+
+@Component({
+    selector: 'app-root',
+    styles: [],
+    template: `
+        <router-outlet></router-outlet>`,
+})
+export class AppComponent {
+    constructor() {
+    }
+}