Vue Router: Reacting to parameter changes - Prismic
How to make router parameter optional in Vue.js – Renat Galyamov
Setting an optional parameter to undefined generates a link with `undefined` in the path instead of ommiting the paramater, like in vue- router@3 · Issue #855 · vuejs/vue-router-next · GitHub
Vuejs Router Tutorial - Vegibit
vue.js,Vue-router with reference, how not to pass a reference