How to use the @ionic/core.ViewLifecycle.WillLeave function in @ionic/core

// Remove the earlier created Vue component from DOM
  removeViewFromDom(_parentElement: HTMLElement, childElement: HTMLVueElement): Promise {
    // Destroy the Vue component instance
    if (childElement.__vue__) {
      childElement.__vue__.$destroy();
    }

    return Promise.resolve();
  }
}

const LIFECYCLES = [
  ViewLifecycle.WillEnter,
  ViewLifecycle.DidEnter,
  ViewLifecycle.WillLeave,
  ViewLifecycle.DidLeave,
  ViewLifecycle.WillUnload
];

export function bindLifecycleEvents(instance: any, element: HTMLElement) {
  LIFECYCLES.forEach(eventName => {
    element.addEventListener(eventName, (ev: any) => {
      if (typeof instance[eventName] === 'function') {
        instance[eventName](ev.detail);
      }
    });
  });
}

// Check Symbol support
const hasSymbol = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';