Check if a Vue 3 component has been loaded and if not, load a general component

Currently in the process of migrating a project from Vue 2 to Vue 3, I find myself searching for a way to determine if a component is loaded, and if not, how to load a GenericComponent as a placeholder. In Vue 2, I was able to accomplish this task using the provided sample code. However, as I delve into the Vue 3 documentation, I am struggling to find any information on this particular topic.

import Vue from 'vue'
import GenericComponent from 'components/GenericComponent'

if (!Vue.options.components['custom-component']) {
  Vue.component('custom-component', GenericComponent)
}
javascriptvue.jsvuejs3

Answer №1

If you want to achieve this functionality, follow these steps:

import { getCurrentInstance } from 'vue';
const instance = getCurrentInstance();
console.log('vue instance', instance?.parent?.components['component-name']);

Keep in mind that parent.components will only include globally registered components.

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