command-entry.component.html

<mat-form-field class="command-area">
  <input matInput type="text" placeholder="What do you want to do?" autofocus autocomplete="off"
         [(ngModel)]="Command"
         (keyup.enter)="submitCommand()">
  <button mat-button matSuffix mat-icon-button aria-label="Go" title="Go"
          (click)="submitCommand()">
    <mat-icon>pets</mat-icon>
  </button>
</mat-form-field>