Function isRTL

core/src/utils/rtl/dir.ts:6–13

(hostEl?: Pick<HTMLElement, 'dir'>)

 * take priority over the root document value.
 */
export const isRTL = (hostEl?: Pick<HTMLElement, 'dir'>) => {
  if (hostEl) {
    if (hostEl.dir !== '') {
      return hostEl.dir.toLowerCase() === 'rtl';
    }
  }
  return document?.dir.toLowerCase() === 'rtl';
};