angular/projects/ng-devtools/src/lib/devtools.component.html

<ng-container *ngIf="angularExists === true; else errorOrLoad">
  <ng-container *ngIf="supportedVersion; else notSupported">
    <div class="devtools-wrapper noselect" [@enterAnimation]>
      <ng-devtools-tabs [angularVersion]="angularVersion"></ng-devtools-tabs>
    </div>
  </ng-container>
  <ng-template #notSupported>
    <p class="text-message">
      Angular Devtools only supports Angular versions 9 and above with
      <a href="https://angular.io/guide/ivy" target="_blank">ivy</a> enabled.
    </p>
  </ng-template>
</ng-container>
<ng-template #errorOrLoad>
  <ng-container *ngIf="angularExists === false; else load">
    <p class="text-message">
      Angular application not detected.
      <span
        class="info-icon"
        matTooltip="You see this message because the app is still loading, or this is not an Angular application"
        >i</span
      >
    </p>
  </ng-container>
  <ng-template #load>
    <div class="initializing" *ngIf="angularExists === null">
      <div class="loading"></div>
    </div>
  </ng-template>
</ng-template>