What are the methods to determine if vue-router is being utilized within the present Vue instance?

I am working on creating a library that includes a vue.js component with navigation elements. The goal is for this component to be flexible, able to function both with and without vue router. When used with the router, it will utilize <router-link>, and when not using the router, it should revert to standard <a> tags.

<template>
       <div>
            <div v-if="vueRouterIsUsed">
                <router-link v-bind:to="url">Router link</router-link>
            </div>
            <div v-else>
                <a :href="url">No router</a>
            <div>
       </div>
</template>
<script>
    export default{
        props: {
            url: {
                type: String,
            }
        }
    }
</script>
  1. What method can be used to determine if vue-router is active in the current Vue instance?
  2. Is there an alternative approach to utilizing <router-link> as a fallback to <a> without resorting to if/else statements?

Answer №1

By examining the this.$router property in the created or mounted lifecycle hook, you have access to all routes and the router object. This allows you to easily determine what you need. Use this information to set the isRouter variable accordingly.

Answer №2

If you happen to be utilizing Vue3, there is a function called getCurrentInstance that can be used in this manner:

const isVueRouterInstalled =
  !!getCurrentInstance().appContext.config.globalProperties.$router;

Nevertheless, it's important to note from the documentation:

The use of getCurrentInstance should only be reserved for advanced scenarios, usually within libraries. It is strongly advised against using getCurrentInstance in application code.

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