title: OAuth 2.0 authorization how to validate token from vanilla JavaScript?
body: <p>I m using auth 2.0 CODE flow in my application.
  I m able to success fully creating token with oauth2.0 .
  I m using Microsoft auth 2.0 with active directory.</p>
  <p>I don't want use MSAL.js I want to create my own vanilla JS
  where i can call some api end point and verify token.</p>
  <p>i dont want to use any library any thoughts</p>