classiceditor is not defined using npm

1Regarding Laravel included libraries examples in boostrap.js file such as 
2pusher, axios, etc...
3
4You may use :
5window.ClassicEditor = require('@ckeditor/ckeditor5-build-classic');
6
7$(document).ready(function(){
8  ClassicEditor.create($('#edit_about_text').get()[0]);
9});