title: How to unset a Javascript Constant in ES6?
body: <p>I read <a href="https://stackoverflow.com/q/1596782/2034794">this</a> post, using <code>delete</code> keyword, we can delete JavaScript variable. But when I tried the same operations with constant but it is returning false when I try to delete constant. Is there any way to delete constants from memory?
  I tried <a href="https://stackoverflow.com/a/27019954/2034794">this</a> answer but its also not working.</p>