title: How to include a library to be available in whole Vue.js 3 project?
body: <p>According to <a href="https://vuejsdevelopers.com/2017/04/22/vue-js-libraries-plugins/" rel="noreferrer">this blog post</a> the correct way of including frequently used libraries (e.g. axios) in Vue.js 2 is to set them as property of Vue prototype object like this:</p>
  <pre><code>import axios from 'axios';
  Object.defineProperty(Vue.prototype, '$axios', { value: axios });
  </code></pre>
  <p>Unfortunately, this approach is not working in Vue.js 3 anymore. So what is the correct way of importing library to be accesible in whole project? I would prefer not to set them as global variable (i.e. to the <code>window</code> object.)</p>