guest.vue

<script>
import navigationMixin from '@/mixins/navigation';
export default {
  name: "guest",
  mixins: [navigationMixin],  
}
</script>

guestNavigation.js

export default {
  methods: {
    toggleDrawer () {
      this.drawer = !this.drawer;
    },
    logout () {
      this.$store.dispatch('firebaseLogout').then(() => {
        this.$store.commit('setUser');
        this.$store.commit('setRole', 'guest');
        this.$router.push('/login');
      })
    }
  }
}