Transitions

<router-view v-slot="{ Component }">
  <transition name="fade">
    <component :is="Component" />
  </transition>
</router-view>

Forcing a transition between reused views

<router-view v-slot="{ Component, route }">
  <transition name="fade">
    <component :is="Component" :key="route.path" />
  </transition>
</router-view>