Tiny library based on fetch to check sites for blocking.

isBlocked('https://t.me').then(() => {
  // Do something if the site is blocked
});

Using npm:

npm i is-blocked

Or yarn:

yarn add is-blocked

<script src="https://cdn.jsdelivr.net/npm/is-blocked@2.0.0/dist/is-blocked.min.js"></script>

• Replace blocked Telegram links