drupal-caravane/web/themes/custom/caravane/assets/js/main.js

import { createApp } from 'vue'
import '../scss/main.scss'
import Etape from './vuejs/Etape.vue'



/**
 * @file
 * reha behaviors.
 */
(function (Drupal) {

  'use strict';

  Drupal.behaviors.reha = {
    attach: function (context, settings) {
      console.log('It works!');
      createApp(Etape).mount('#etape-modale');

    }
  };

} (Drupal));