Function canReuse

06.Router/basic/js/vue-router.js:1044–1059

* Determine the reusability of an existing router view. * * @param {Directive} view * @param {Object} handler * @param {Transition} transition

(view, handler, transition)

   */

  function canReuse(view, handler, transition) {
    var component = view.childVM;
    if (!component || !handler) {
      return false;
    }
    // important: check view.Component here because it may
    // have been changed in activate hook
    if (view.Component !== handler.component) {
      return false;
    }
    var canReuseFn = getRouteConfig(component, 'canReuse');
    return typeof canReuseFn === 'boolean' ? canReuseFn : canReuseFn ? canReuseFn.call(component, {
      to: transition.to,
      from: transition.from
    }) : true; // defaults to true
  }

  /**
   * Check if a component can deactivate.