talk/plugins/talk-plugin-subscriber/client/components/SubscriberBadge.js

import React from 'react';
import styles from './SubscriberBadge.css';
import {t} from 'plugin-api/beta/client/services';

export default () =>(
  <span className={styles.badge}>
    {t('talk-plugin-subscriber.subscriber')}
  </span>
);