Why doesn't vue2 work in latest Laravel?

Question

Vue.js

I put the latest build of laravel. I already understood it as it is imprisoned for vue3. I put my project on vue2 and I get an error in the browser console:

undefined is not an object (evaluating 'Vue.version.split')

In webpack like this:

mix.js('vendor/vkiranananda/backend/resources/js/backend.js', 'public/backend/js/admin.js').vue({ version: 2 }).version();

Answer 1

You need to manually import into the Vue entry point:

// src/app.js

import Vue from 'vue'; //////// <---
import Alert from './Alert.vue';

new Vue({
    el: '#app',
    components: { Alert }
});

Answer 2

You need to import in the Vue component:

// src/app.js

import Vue from 'vue';
import Alert from './Alert.vue';

new Vue({
    el: '#app',
    components: { Alert }
});