Method setActive

core/src/components/tabs/tabs.tsx:156–168

(selectedTab: HTMLIonTabElement)

  }

  private setActive(selectedTab: HTMLIonTabElement): Promise<void> {
    if (this.transitioning) {
      return Promise.reject('transitioning already happening');
    }

    this.transitioning = true;
    this.leavingTab = this.selectedTab;
    this.selectedTab = selectedTab;
    this.ionTabsWillChange.emit({ tab: selectedTab.tab });
    selectedTab.active = true;
    this.updateTabBar();
    return Promise.resolve();
  }

  private tabSwitch() {
    const selectedTab = this.selectedTab;