Method transitionDone

src/material/tabs/tab-body.ts:224–234

(event: TransitionEvent)

    this._ngZone.runOutsideAngular(() => {
      const element = this._elementRef.nativeElement;
      const transitionDone = (event: TransitionEvent) => {
        if (event.target === this._contentElement?.nativeElement) {
          this._elementRef.nativeElement.classList.remove('mat-tab-body-animating');

          // Only fire the actual callback when a transition is fully finished,
          // otherwise the content can jump around when the next transition starts.
          if (event.type === 'transitionend') {
            this._transitionDone();
          }
        }
      };

      this._eventCleanups = [
        this._renderer.listen(element, 'transitionstart', (event: TransitionEvent) => {