sentry/static/app/utils/isActiveSuperuser.tsx

import Cookies from 'js-cookie';

import ConfigStore from 'sentry/stores/configStore';

const SUPERUSER_COOKIE_NAME = window.superUserCookieName ?? 'su';
const SUPERUSER_COOKIE_DOMAIN = window.superUserCookieDomain;

/**
 * Checking for just isSuperuser on a config object may not be enough as backend
 * often checks for *active* superuser. We check both isSuperuser flag
 * AND superuser session cookie.
 *
 * Note that this function does not work all the time. It is possible to have
 * an expired superuser cookie.
 *
 * Documented here: https://getsentry.atlassian.net/browse/ER-1602
 */
export function isActiveSuperuser() {
  const {isSuperuser} = ConfigStore.get('user') || {};

  if (isSuperuser) {
    const superUserCookieName =
      ConfigStore.get('superUserCookieName') || SUPERUSER_COOKIE_NAME;
    const superUserCookieDomain =
      ConfigStore.get('superUserCookieDomain') || SUPERUSER_COOKIE_DOMAIN;

    /**
     * Superuser cookie cannot be checked for existence as it is HttpOnly. As a workaround, we try
     * to change it to something else and if that fails we can assume that it's being present.
     */
    Cookies.set(superUserCookieName, 'set-in-isActiveSuperuser', {
      domain: superUserCookieDomain,
    });

    if (Cookies.get(superUserCookieName) === undefined) {
      return true;
    }
  }

  return false;
}