ngIf else ng-template for initial loading work

src/app/shared/loading/loading.component.ts

@@ -0,0 +1,12 @@
+import { Component, Input } from '@angular/core';
+
+@Component({
+  selector: 'ds-loading',
+  styleUrls: ['./loading.component.scss'],
+  templateUrl: './loading.component.html'
+})
+export class LoadingComponent {
+
+  @Input() message: "Loading...";
+
+}