Is changing JS code by user is bad thing? : <p>I'm building a recent portal based on Drupal 8.6 as API and Vue.js as SPA.I do for now tones of research about OAuth authentication security etc, but i can't stop thinking about user changing code by Developer Tools. </p>

<p>I not worried about data leak, because this should be secured on a backed as well, but what if user change isLogin() to always true and see for example logged user HTML template.</p>

<p>Is there some steps I should take and this is real problem or this problem is big only in my head, and this is way that it works ?</p>

<p>Thanks! </p>
